{"id":1722,"date":"2009-07-24T17:57:36","date_gmt":"2009-07-25T00:57:36","guid":{"rendered":"http:\/\/www.thorntonweather.com\/blog\/?p=1722"},"modified":"2009-07-24T17:57:36","modified_gmt":"2009-07-25T00:57:36","slug":"july-19-to-july-25-this-week-in-denver-weather-history","status":"publish","type":"post","link":"https:\/\/www.thorntonweather.com\/blog\/thornton-weather\/july-19-to-july-25-this-week-in-denver-weather-history\/","title":{"rendered":"July 19 to July 25 – This week in Denver weather history"},"content":{"rendered":"
\"July
July 19 to July 25 - This week in Denver weather history<\/figcaption><\/figure>\n

This week in weather history we really begin to see the arrival of monsoon season and the heavy rains and flooding it can bring to the Thornton and Denver area.\u00a0 Be sure to check out the events on the 23rd and what the heavy rain brought to the Thornton area in 2004.<\/p>\n

13-5\u00a0<\/p>\n

In 2008…a streak of 26 consecutive days of 90 degrees shattered the previous record of 18 consecutive days established in 1901 and 1874.\u00a0\u00a0 Ironically…no new single day record high temperatures were set in the month of July. In august however…a record of 104 degrees was set on the 1st…and another record of 103 degrees was set on the 2nd. In addition…a record low min of 70 degrees was set on august 2nd.<\/p>\n

18-19<\/p>\n

In 2003…heavy rain producing thunderstorms caused flash flooding across southern metro Denver.\u00a0 Automated rain gages measured 2 to 3 inches of rain in less than an hour.\u00a0 The heavy rainfall caused many intersections and underpasses to flood…stranding motorists.\u00a0 Sections of I-25 and I-225 were closed due to the high water.<\/p>\n

19\u00a0\u00a0\u00a0<\/p>\n

In 1875…recent heavy rains produced high waters on many creeks and rivers in the area…which threatened the destruction of property at some locations.\u00a0 Cherry Creek in the city was running the highest in 10 years.\u00a0 Heavy rain in the mining regions over the last 2 days resulted in water running “everywhere” and the suspension of some work.
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\nIn 1881…a thunderstorm passing across the city produced lightning with no rain.\u00a0 A woman was seriously injured when struck by lightning several blocks from the weather office in downtown Denver.
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\nIn 1934…the temperature reached a high of 100 degrees in downtown Denver.
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\nIn 1965…hail…rain…and lightning hit west metro Denver. Hail stones as large as 1 1\/2 inches in diameter accumulated to a depth of 2 inches in Evergreen where 2.95 inches of rain in 2 hours caused some flooding in the business section of the town.\u00a0 Lightning caused some power outages.
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\nIn 1973…two funnel clouds were observed 5 miles southeast of Littleton.\u00a0 The same funnel clouds were observed for 20 minutes…5 miles west and 5 miles west-southwest of Arapahoe County airport…now Centennial Airport.
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\nIn 1975…lightning injured a man in Denver and caused power outages in Aurora…Lakewood…Westminster…and west Denver.
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\nIn 1984…strong thunderstorm winds gusting to 45 mph shattered 7 large plate glass windows at Stapleton International Airport.
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\nIn 1985…a tornado touched down in the surrey ridge area of northern Douglas County…just west of I-25.\u00a0 Ten homes were damaged; one under construction was nearly destroyed.\u00a0 Two vehicles were thrown off I-25 injuring three people.\u00a0 A pick-up truck was thrown 50 feet by the twister.\u00a0 In addition…a cluster of severe thunderstorms pounded all of metro Denver with torrential rain…hail…and wind.\u00a0 The heaviest rain fell in Aurora where one location reported 2.37 inches in just 40 minutes.\u00a0 One location in northeast Aurora received a total of 4.30 inches from the storm. There was extensive street and basement flooding…and a number of roads were damaged or washed out.\u00a0 An Aurora boy suffered minor injuries when he was washed into a drainage ditch.\u00a0 Golf ball size hail in Aurora piled up to 5 inches deep.\u00a0 An inch of rain fell in 20 minutes at Stapleton International Airport…closing it to air traffic for an hour.\u00a0 Up to 1 1\/2 inches of rain fell in just 15 minutes over central Denver with the high water closing I-25.\u00a0 The water was so deep on the freeway…that one vehicle was completely submerged and people were diving into the water from the freeway overpass.\u00a0 Three homes in Littleton were damaged by lightning.\u00a0 Wind blew out several windows from a high rise apartment building in southeast Denver. Rainfall totaled 1.51 inches at Stapleton International Airport.
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\nIn 1997…torrential rain and damaging hail pummeled eastern sections of metro Denver.\u00a0 Hail up to 1.25 inches in diameter fell at the national weather service office on the site of the former Stapleton International Airport.\u00a0 The hail continued for about 15 minutes and accumulated to a depth of 2 to 3 inches…causing extensive damage to cars in the area.\u00a0 Heavy rainfall totaled 3.83 inches in about an hour from the nearly stationary thunderstorm.\u00a0 Numerous cars stalled along I-70…and several homes were flooded in east Denver.\u00a0 The roof of a building collapsed under the weight of the water.\u00a0 The next day several “fatalities” were discovered near the national weather service office; two prairie dogs were found dead along with three rabbits that either drowned or were killed by the large hail.
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\nIn 1999…lightning struck two residences in Littleton…but caused only minor damage.\u00a0 Lightning triggered a fire at a residence in cherry hills village.\u00a0 A small portion of the roof and ceiling were damaged before the fire could be extinguished.
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\nIn 2000…hail as large as 1.25 inches in diameter fell near Roggen northeast of Denver.
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\nIn 2004…heavy rainfall caused flooding on the Virginia Canyon Road near Idaho Springs…which had to be closed for repairs.
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\nIn 2006…the temperature climbed to a high of 100 degrees.\u00a0 The high temperature was not a record maximum for the date.
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\nIn 2007…a severe thunderstorm produced large hail…up to 1 inch in diameter…about 6 miles north of Northglenn.<\/p>\n

19-23<\/p>\n

In 2005…the high temperature climbed above 100 degrees on each of the 5 days with readings of 101 on the 19th…105 on the 20th…104 on the 21st…and 102 on both the 22nd and 23rd. A new record maximum temperature for the month of July of 105 degrees was set on the 20th…which also equaled the all time record maximum for Denver of 105 degrees first set on august 8th in 1878.\u00a0 Daily maximum temperature records were set on each day…and the 5 day period equaled the record for the most consecutive days of 100 degrees or more first set from July 4th through 8th in 1989.\u00a0 The intense heat resulted in a high use of electricity for cooling purposes.\u00a0 The demand for electric power exceeded the supply and rolling black-outs… Each lasting about an hour…were scheduled across metro Denver during the afternoons and early evenings.<\/p>\n

20\u00a0\u00a0\u00a0<\/p>\n

In 1898…an apparent thunderstorm produced sustained northwest winds to 45 mph with gusts to 51 mph.
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\nIn 1939…the high temperature reached 102 degrees in downtown Denver.\u00a0 This was the highest temperature recorded since august 8…1878…a period of 61 years…and the third highest temperature of record at the time.\u00a0 Six miles to the east… At Denver municipal airport…the maximum temperature reached 104 degrees.\u00a0 A dry period during mid-July…combined with low relative humidities…resulted in an unusually large number of forest fires in the mountains west of Denver.
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\nIn 1941…an afternoon thunderstorm caused two lightning deaths.\u00a0 The men were struck by lightning near the Denver airport.
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\nIn 1951…a thunderstorm wind gust to 54 mph was recorded at Stapleton Airport.
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\nIn 1965…heavy rain west of Denver damaged roads and bridges. Two bridges in Golden were washed out.\u00a0 Lightning in Denver caused some power failures and fires…mostly in the northeast section of the city.\u00a0 Heavy rain caused street flooding in the city of Denver.\u00a0 Hail as large as 1\/2 inch in diameter and 0.40 inch of rain in 5 minutes were measured at Stapleton International Airport where precipitation totaled 1.09 inches.\u00a0 Lightning damaged a house in Littleton…and caused a power outage in idaho springs.
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\nIn 1973…lightning damage was reported west of Arvada.
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\nIn 1975…heavy rains caused flash flooding across metro Denver…resulting in the closing of several streets and damage to numerous homes and businesses.\u00a0 Hail 1\/2 to 3\/4 inch in diameter was reported.
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\nIn 1976…heavy thunderstorms caused flooding of streets in southeast Denver and western Arapahoe counties.\u00a0 A total of 3.35 inches of rain was measured at Kassler southwest of Littleton.
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\nIn 1978…a girl was injured by lightning at a country club southwest of Denver.
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\nIn 1984…heavy rain was reported just east of Buckley Field in Aurora where 1.15 inches fell in just 45 minutes.
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\nIn 1986…thunderstorms dumped heavy rain across metro Denver causing extensive street flooding…power outages…and basement flooding.\u00a0 The greatest recorded rainfall was 4.39 inches in Lakewood.\u00a0 In extreme northwest Denver…2.29 inches of rain fell in just 20 minutes.\u00a0 Arvada was drenched with 2.60 inches of rain…and over an inch fell in southeast Denver and adjacent sections of Aurora.
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\nIn 1990…heavy thunderstorm rains caused flash flooding in sections of Littleton where 1.20 inches of rain fell in less than 30 minutes.\u00a0 The deluge caused dry creek to jump its banks…causing damage to residential streets…curbs…and sidewalks.\u00a0 Nearly 100 vehicles were stranded for a time in fender-deep water when sewers and drainage ditches became choked with debris.\u00a0 The heavy runoff submerged many Littleton streets and intersections.
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\nIn 1992…strong thunderstorms moved slowly through east metro Denver…producing rainfall up to 2.50 inches in a short time. Weather spotters reported 0.75 to 1.00 inch of rain in less than 30 minutes.\u00a0 Many areas of southeast Denver were flooded…including I-25 where up to 6 feet of water filled some underpasses.\u00a0 Hail to 3\/4 inch in diameter fell in Aurora.
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\nIn 1995…a tornado touched down briefly in an open field near Strasburg.\u00a0 Thunderstorm winds gusted to 58 mph at Centennial Airport.
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\nIn 1996…strong thunderstorm winds damaged the building of a telephone installation company in the city of Denver.
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\nIn 1998…the high temperature reached 100 degrees at Denver International Airport.
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\nIn 2006…heavy rainfall in the overland wildfire burn area caused minor flash flooding in Jamestown.\u00a0 The roads behind the Jamestown fire hall were washed out…when a culvert was blocked by debris.\u00a0 A rockslide was also reported in town.<\/p>\n

20-23<\/p>\n

In 1961…unusually cool weather for July resulted in several temperature records.\u00a0 Record minimum temperatures were set or equaled on each day with readings of 51…51…49… And 49 degrees.\u00a0 High temperature of only 64 degrees on the 21st was a record low maximum for the date.<\/p>\n

20-25<\/p>\n

In 1965…heavy showers and thunderstorms doused metro Denver with significant rain each day.\u00a0 Rainfall for the six days totaled 5.16 inches at Stapleton International Airport. Massive rainfall occurred on the 20th…21st…and 25th… Flooding streets and basements and causing streams to overflow.\u00a0 The heaviest rainfall…2.05 inches…at Stapleton International Airport occurred on the 25th.<\/p>\n

21\u00a0\u00a0\u00a0<\/p>\n

In 1879…lightning struck a house in north Denver.\u00a0 The bolt struck the center of the roof driving part of it into the house and scattered shingles all over the yard.\u00a0 Furniture in the house was heavily damaged…but none of the nine residents were injured other than being stunned.\u00a0 The noise sounded as if a cannon had been exploded.\u00a0 Rainfall was only 0.02 inch downtown.
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\nIn 1921…northwest winds were sustained to 42 mph with gusts to 48 mph.
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\nIn 1943…a severe thunderstorm during the evening caused the death of a man whose truck skidded on a muddy roadway on a steep hill and overturned pinning him underneath.\u00a0 Several small fires were started by the lightning…and electrical wires were downed.\u00a0 No serious property damage was reported… But firemen answered 19 alarms in 2 hours.\u00a0 One person was injured by lightning.
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\nIn 1965…a funnel cloud was sighted in the northern portion of Denver.\u00a0 Later…4 or 5 funnel clouds were sighted about 15 miles north of Stapleton International Airport.\u00a0 Heavy rain accompanied by hail washed away part of a city street and caused other flooding in central city.\u00a0 There were heavy showers and some damage from lightning in both Denver and Boulder.\u00a0 Marble to golf ball size hail fell 10 miles northwest of Stapleton Airport.
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\nIn 1966…heavy thunderstorm rains flooded streets and basements across metro Denver.
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\nIn 1973…a tornado touched down briefly 2 miles northeast of Parker…causing minor damage.\u00a0 Funnel clouds were also sighted 3 miles northeast of Sedalia…11 miles south southeast of Stapleton International Airport…and near Parker.\u00a0 Hail to 3\/4 inch in diameter fell over the western suburbs of Denver.
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\nIn 1974…heavy thunderstorm rains caused flash flooding in metro Denver.\u00a0 Rainfall totaled 1.26 inches at Stapleton International Airport.
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\nIn 1976…heavy thunderstorm rains occurred across south metro Denver with 1.75 inches of rain recorded in 40 minutes in southeast Aurora and 2.00 inches in 20 minutes at Cheery Creek Reservoir.\u00a0 A funnel cloud was sighted by the public east of Arapahoe County airport…now Centennial Airport.
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\nIn 1981…the temperature reached 100 degrees…setting a new record high for the date.
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\nIn 1983…downpours drenched the Front Range where amounts of 1 to 2 inches were common.\u00a0 The heaviest reported rainfall was 2.36 inches in a 6-hour period at Parker where hail to 3\/4 inch and wind gusts as high as 75 mph occurred.\u00a0 Up to golf ball size hail fell in the Parker and Castle Rock areas; wind gusts to 75 mph were recorded in Castle Rock.
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\nIn 1993…thunderstorm winds toppled a 3 story high russian olive tree in Boulder.\u00a0 The tree barely hit and only slightly damaged a parked car.
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\nIn 1995…thunderstorm winds from the west gusted to 55 mph at Denver International Airport.
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\nIn 2002…heavy thunderstorm rainfall caused flash flooding in the Hayman Fire burn area.\u00a0 South Deckers road…State Highway 126…was closed when 4 feet of water inundated a section of the roadway.\u00a0 The u.s. forest service had to remove 40 truckloads of sediment to reopen the road. Also…heavy debris flow washed out a secondary service road in southwest Douglas County.\u00a0 Hail as large as 3\/4 inch in diameter fell near Bennett.<\/p>\n

22\u00a0\u00a0\u00a0<\/p>\n

In 1874…a severe thunderstorm during the late afternoon produced 1.36 inches of rainfall in an hour…most of which fell in 20 minutes.\u00a0 There was much damage from flooding of streets and considerable damage to private property. The lightning was brilliant and continuous during the storm.\u00a0 Seven buildings were struck by lightning in the city…in addition to many places where it struck only the ground.\u00a0 A magnificent example of ball lightning was observed.\u00a0 When about 200 feet above the house tops…the ball exploded and broke into 7 or 8 different balls…each about 6 inches in diameter.\u00a0 Upon reaching about 20 feet above the ground…these balls broke into small fragments about 3 inches long and 1\/2 inch wide.\u00a0 A shed situated in an alley about one block away was literally covered with these sparks.\u00a0 After the storm was over…the shed and adjacent area showed no trace of the event.\u00a0 Not the slightest mark could be detected on structures or on the ground.
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\nIn 1879…a terrific electrical storm passed over the city during the afternoon.\u00a0 The lightning display was unusually vivid and the crash of thunder seemed at the very house tops.\u00a0 A few homes and buildings were struck by lightning. A home on Capitol Hill sustained much damage to furniture… But the residents in another wing of the house were not injured.\u00a0 Lightning struck a fence at the corner of Curtis and Broadway.\u00a0 A lightning bolt stunned a workman and knocked a mason’s trough from his hand.\u00a0 A school was struck but was not damaged.\u00a0 Lightning struck the ground near tenth and Colfax.\u00a0 Rain fell in torrents for a time…but the heaviest was on the outskirts of the city.\u00a0 Rainfall in the city was only 0.30 inch.
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\nIn 1882…lightning struck and killed a man in the northern part of the city.
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\nIn 1895…heavy rainfall of 1.53 inches was measured in downtown Denver.
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\nIn 1931…the high temperature reached 100 degrees in downtown Denver.
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\nIn 1965…lightning struck and killed a boy standing by an automobile near Stapleton International Airport.\u00a0 Scattered heavy showers accompanied by hail and wind occurred across metro Denver.\u00a0 Heavy rain caused some street damage in Commerce City.
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\nIn 1973…minor thunderstorm wind damage was reported in Aurora.
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\nIn 1983…heavy thunderstorms dumped torrential rain and large hail across metro Denver.\u00a0 The most serious problems were caused by heavy rainfall in the foothills…which produced flooding on bear creek.\u00a0 Runoff from 3 inches of rain in 45 minutes at Kittredge caused bear creek to rise 5 feet in 10 minutes at Morrison…washing out two bridges.\u00a0 One bridge collapsed…plunging a fire truck into the water…but the occupants were not injured.\u00a0 The town was evacuated for 2 hours.\u00a0 Evergreen was drenched with 2.61 inches of rain in 30 minutes…which caused street flooding along with power outages.\u00a0 Hail to golf ball size damaged cars.\u00a0 A deck on a house east of Evergreen was washed away.\u00a0 At Idaho Springs… 2 inches of rain fell in 45 minutes.\u00a0 Golden received 3 inches of rain in an hour with 0.80 inch of rain in seven minutes at Littleton.\u00a0 Heavy rain and large hail also fell in the city of Denver and its northern and eastern suburbs… Causing street flooding.\u00a0 Water was 6 feet deep on one Aurora street.
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\nIn 1991…heavy rains caused extensive flooding across north metro Denver.\u00a0 Ralston creek in Arvada flowed out of its banks.\u00a0 At the intersection of I-25 and I-70…up to 8 feet of water covered the highway.\u00a0 A foot of water covered a stretch of I-70 in northwest Denver.\u00a0 Thunderstorm rainfall totaled only 0.82 inch at Stapleton International Airport.
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\nIn 1998…lightning sparked a fire which caused extensive damage to a home in Englewood.\u00a0 Most of the second floor was destroyed.
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\nIn 2004…severe thunderstorms produced hail to 1.25 inches in diameter in Commerce City and near Brighton.<\/p>\n

22-23<\/p>\n

In 1991…heavy rains over the palmer divide and along the Front Range caused the South Platte River to flood from near Henderson to Fort Lupton.\u00a0 The river was out of its banks at several locations with water covering the roads through the night.\u00a0 Only minor damage was reported.<\/p>\n

23\u00a0\u00a0\u00a0<\/p>\n

In 1901…the temperature climbed to a high of 90 degrees… Marking the 18th consecutive day with a high temperature of 90 degrees or more.\u00a0 This equaled the record of 18 consecutive days set from July 1st through July 18th in 1874.
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\nIn 1910…the temperature climbed to a high of 101 degrees in downtown Denver.
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\nIn 1936…the high temperature reached 100 degrees in downtown Denver.
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\nIn 1957…a tornado was observed by national weather service personnel 25 miles east-northeast of Stapleton Airport for 7 minutes.\u00a0 No property damage or injuries were reported. The public reported a funnel cloud 10 miles northeast of Brighton.
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\nIn 1960…lightning struck many locations across metro Denver. A Boy Scout leader was struck and injured at the Rocky Mountain Arsenal.\u00a0 Some sections of Arvada were blanketed with a white layer of hailstones.\u00a0 A number of weed fires were started by lightning.\u00a0 Some houses were struck…but no serious damage occurred.\u00a0 Heavy rain fell from northwest Denver to Brighton with up to 1.50 inches in some areas.
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\nIn 1965…heavy rain flooded and damaged homes in Georgetown… Where the sewer system was damaged and the water supply contaminated.\u00a0 Heavy rains in Aurora washed out earthen bridges over sand creek.\u00a0 Streets were flooded in Denver. Several highways were washed out to the east and southeast of Denver.
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\nIn 1975…heavy rains caused flash flooding in the foothills west of Denver.\u00a0 Several roads and businesses were damaged in the central city and Blackhawk areas.
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\nIn 1983…heavy thunderstorms blasted Denver and areas to the south.\u00a0 Douglas County was hardest hit.\u00a0 Golf ball size hail fell in and near Parker.\u00a0 Many homes at the Pinery south of Parker had windows broken and paint stripped by the storm with some vehicles dented by the large stones.\u00a0 In Parker… 1.90 inches of rain fell in just 30 minutes.\u00a0 Many roads in Douglas County were washed out…and at least one bridge was damaged.\u00a0 Up to 2 inches of rain fell in Lakewood…and Littleton was drenched by 1.60 inches in 15 minutes.\u00a0 A department store in Lakewood suffered water damage when a pipe handling runoff broke…sending 4 inches of water onto the floor of the store.
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\nIn 1990…a thunderstorm wind gust to 53 mph was recorded at Stapleton International Airport…where 1\/8 inch diameter hail fell.
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\nIn 1992…heavy thunderstorm rains caused Howard Gulch in southeast Denver to flow over its banks.\u00a0 A weather spotter recorded thunderstorm wind gusts to 63 mph in Aurora. Another spotter measured a wind gust to 60 mph…which toppled a large tree.\u00a0 Thunderstorm winds gusted to only 41 mph at Stapleton International Airport.
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\nIn 1996…hail…as large as an inch in diameter…fell 5 miles west of Castle Rock.
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\nIn 1997…damaging thunderstorm winds associated with a wet microburst ripped the roof off a barn near Brighton… Causing the east side of the structure to collapse.\u00a0 The roof of a nearby utility shed was also lifted off and blown 60 feet away.\u00a0 West winds gusted to 38 mph at Denver International Airport.
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\nIn 2001…a severe thunderstorm pelted Littleton with hail as large as 1 1\/2 inches.\u00a0 Total damage to vehicles…roofs… Buildings…and landscaping totaled over 600 thousand dollars.\u00a0 Rain leaked into offices…damaging computers. Almost every vehicle parked in the Littleton center lot sustained some hail damage.\u00a0 Thunderstorm winds gusted to 55 mph at Denver International Airport.
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\nIn 2002…a small tornado briefly touched down near Bennett. No damage was reported.
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\nIn 2004…heavy thunderstorm rainfall in the overland fire burn area caused flash flooding in Jamestown.\u00a0 Up to a foot of water reportedly covered the highway near Jamestown. Many of the town’s culverts filled with dirt and debris… Causing the overflow to wash onto streets and into homes. Heavy machinery had to be used to remove piles of mud up to 7 feet deep.\u00a0 Parked cars slid down the street with the mud and water…and many had to be dug out.\u00a0 The fire station in Jamestown was inundated with 10 inches of muddy water.\u00a0 Heavy thunderstorm rainfall caused street flooding in federal heights and Thornton.\u00a0 Several streets were inundated with 2 to 4 feet of water…including 84th avenue and grant street…Conifer Street and Huron Blvd…. 102nd Ave. and Melody…as well as 83rd Ave. and Washington. Several cars were stranded in the flood waters.\u00a0 Heavy rainfall also caused street flooding in parts of Westminster. Water reportedly flowed into car windows just north of 104th avenue and U.S. Highway 36.\u00a0 Sections of two roads had to be closed due to flooding.\u00a0 Heavy thunderstorm rainfall of up to 2 inches in 45 minutes caused flash flooding just east of Aurora.\u00a0 Floodwaters ranging from 2 to 3 feet deep forced the closure of Powhaten…Gun Club and Picadilly roads. Lightning caused power outages in parts of Arvada.\u00a0 About 9800 customers were without power for up to 90 minutes.<\/p>\n

24\u00a0\u00a0\u00a0<\/p>\n

In 1896…heavy cloudbursts in the foothills west of Denver caused flash flooding on bear creek…clear creek…Golden gate gulch…and mount vernon creek…resulting in a total of 27 deaths.\u00a0 The downpour dislodged large Boulders…one of which crushed a house.\u00a0 The heavy rain also caused a dam on cub creek to wash out…adding even more water to the flood. A wall of water as high as 10 feet flooded Evergreen and passed down bear creek…washing away many structures along the way.\u00a0 The flood crest produced 3 feet of water in downtown Morrison during the early evening.\u00a0 Flash flooding on Mount Vernon Creek added to the flooding in Morrison. In Golden…the flooding washed out bridges on clear creek and on Cresman and tucker gulches and forced the closure of the power plant.\u00a0 In Denver…a thunderstorm produced hail of unknown size during the afternoon and rainfall of 1.23 inches overnight.
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\nIn 1958…a thunderstorm wind gust to 52 mph was recorded at Stapleton Airport.
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\nIn 1965…heavy rain caused flooding on clear creek and tucker gulch in Golden and west Denver.\u00a0 Damage in Golden was estimated at 80 thousand dollars.\u00a0 Heavy rain south of Denver washed out temporary earthen bridges constructed following the June floods in Castle Rock…Littleton… Englewood…and Denver.\u00a0 Bear creek in south Denver reached flood stage.\u00a0 A cloudburst on Cub Creek in Evergreen washed out bridges and roads.\u00a0 Heavy rain fell over all the Denver and Aurora areas…causing some flooding of roads…streets… And bridges.\u00a0 A man drowned in a flooded irrigation canal near Hudson.\u00a0 Heavy rain caused flooding of streets and roads in Blackhawk and central city.\u00a0 Hail caused minor damage in Idaho Springs.
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\nIn 1967…seven bridges were washed out along a normally dry creek bed south of State Highway 7 west of Brighton.\u00a0 One car was washed into the creek when a bridge gave way.
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\nIn 1970…hail stones to 1 1\/4 inches in diameter fell in the foothills of Jefferson County southwest of Denver.
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\nIn 1971…golf ball size hail was reported in foothill areas of Jefferson County west of Denver.\u00a0 A funnel cloud was sighted in Aurora.\u00a0 Wind gusts estimated at 60 mph…hail… And heavy rain up to an inch in 15 minutes caused local flooding and some other damage in several areas of metro Denver.\u00a0 Hailstones to 3\/4 inch in diameter fell 7 miles southeast of Denver.
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\nIn 1973…a thunderstorm wind gust to 52 mph was recorded at Stapleton International Airport where one inch diameter hail was measured.
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\nIn 1981…strong winds downed a power line in northeast Denver. Wind gusts to 50 mph were recorded at Chatfield Reservoir.
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\nIn 1987…3\/4 inch diameter hail fell 5 miles northeast of Commerce City.
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\nIn 1996…hail…up to 1 3\/4 inches in diameter…fell at Chatfield Reservoir.\u00a0 Hail to 3\/4 inch in diameter was measured near Bennett.
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\nIn 2000…lightning struck near two golfers at Ute Creek Golf Course near Longmont…knocking them to the ground.\u00a0 The men received only minor injuries.
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\nIn 2001…lightning from a thunderstorm knocked out electrical power to about 1500 residents in the city of Denver.
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\nIn 2004…a chilly day with fog and thunderstorms resulted in two temperature records.\u00a0 The low temperature of 49 degrees was a record minimum for the date.\u00a0 The high temperature of only 58 degrees was a record low maximum for the date.<\/p>\n

24-25<\/p>\n

In 2003…maximum temperature of 100 degrees on the 24th was a record high for the date.\u00a0 Low temperature of 73 degrees on the 25th was a record high minimum for the date.<\/p>\n

25\u00a0\u00a0\u00a0<\/p>\n

In 1875…brief heavy rain and hail lasted only 5 minutes… But the 1\/4 inch diameter hail covered the ground to a depth of 1\/2 inch and made the streets look like there had been snowfall.\u00a0 There was much crop damage…especially to corn…and some sheep were killed.\u00a0 Precipitation totaled 0.51 inch in the city.
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\nIn 1896…a heavy thunderstorm produced sustained northwest winds to 45 mph with gusts to 50 mph and 1.02 inches of rain.
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\nIn 1965…a cloudburst dumped 1.99 inches of rain in 30 minutes at Stapleton International Airport.\u00a0 The storm was accompanied by strong winds gusting to 70 mph.\u00a0 The heavy rain flooded numerous streets in east Denver and Aurora. One inch diameter hail accompanied a cloudburst…9 miles southwest of Denver.\u00a0 A funnel cloud was sighted 25 miles northwest of Denver.\u00a0 In Aurora…there were unofficial reports of 2.30 inches of rain in 40 minutes and 3.30 inches of rain in 30 to 40 minutes.\u00a0 Rainfall totaled 2.05 inches at Stapleton International Airport.\u00a0 Rainfall of 2.42 inches for 24 hours on the 24th and 25th was the second greatest on record for July.
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\nIn 1977…a tornado touched down briefly in Aurora southeast of Cheery Creek Reservoir.\u00a0 No damage was reported. A funnel cloud was sighted for 4 minutes by national weather service personnel 10 miles north of Stapleton International Airport near Henderson.
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\nIn 1991…heavy rain…up to half an inch in 10 minutes…caused flooding in Westminster…Northglenn…and north Denver where a section of railroad track was washed away.\u00a0 At Stapleton International Airport…heavy thunderstorm rain totaled 1.85 inches and briefly reduced the visibility to 1\/4 mile. Hail to 1\/8 inch in diameter was also measured.\u00a0 A tornado touched down briefly near Fort Lupton.\u00a0 No damage was reported.
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\nIn 1998…heavy monsoonal thunderstorm rains caused flooding and flash flooding in eastern and southern sections of metro Denver…including Englewood and Aurora…when about 2 to 3 inches of rain inundated the area.\u00a0 Both I-25 and I-70 were closed for 2 to 3 hours as several low lying areas became impassable due to the high waters.\u00a0 The water was estimated to be 15 feet deep in one flooded underpass along I-25.\u00a0 As a result…the freeway was closed from south of 6th avenue to university Blvd.\u00a0 Standing water forced the closure of I-70 at gun club road east of Denver.\u00a0 In Englewood…U.S. Highway 285 was closed…when high water made it impassable.\u00a0 Several cars were reportedly floating down the roadway near Sheridan Blvd.\u00a0 In Aurora…the intersection at Yale Ave. and Chambers Rd. was flooded by high water up to 4 feet deep when a spillway on the high line canal was breached.\u00a0 Lightning also knocked out 11 transformers across metro Denver…causing several small fires and scattered power outages.\u00a0 Flood and flash flooding also occurred north of Strasburg when as much as 2.51 inches of rain fell in an hour.\u00a0 The deluge resulted in considerable flooding of local streets and County roads.\u00a0 Torrential rainfall of 2 to 3 inches in less than an hour triggered a flash flood in Virginia Canyon.\u00a0 County road 279 between Idaho Springs and Central City was closed for two days to clear debris from mudslides.\u00a0 Several cars in Idaho Springs were washed off the road…and numerous basements were flooded in town.\u00a0 Thunderstorm rainfall totaled 2.69 inches at Denver International Airport.
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\nIn 2001…lightning struck two homes in Lafayette…damaging the roof and attic of one and shorting out the electrical system in another.\u00a0 Hail to 1 3\/4 inch in diameter was measured 7 miles north of Castle Rock with 3\/4 inch hail 7 miles north of Sedalia.
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\nIn 2005…heavy thunderstorm rain in the vicinity of the overland wildfire burn scar triggered a mudslide in Jamestown.\u00a0 Rocks the size of bowling balls…along with silt and mud slid down the mountain into the town.\u00a0 No one was injured.\u00a0 One parked car was buried by the debris.
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\nIn 2006…heavy thunderstorm rainfall caused flash flooding 1 mile north of the town of Westcreek in southwestern Douglas County.\u00a0 Several maintenance roads were washed out by the floodwaters.<\/p>\n","protected":false},"excerpt":{"rendered":"

This week in weather history we really begin to see the arrival of monsoon season and the heavy rains and flooding it can bring to the Thornton and Denver area.\u00a0 Be sure to check out the events on the 23rd and what the heavy rain brought to the Thornton area in 2004. 13-5\u00a0 In 2008…a … Continue reading July 19 to July 25 – This week in Denver weather history<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,63],"tags":[81,106,62,741],"_links":{"self":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/1722"}],"collection":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/comments?post=1722"}],"version-history":[{"count":1,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/1722\/revisions"}],"predecessor-version":[{"id":1723,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/1722\/revisions\/1723"}],"wp:attachment":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/media?parent=1722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/categories?post=1722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/tags?post=1722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}