{"id":2851,"date":"2010-07-12T07:31:21","date_gmt":"2010-07-12T13:31:21","guid":{"rendered":"http:\/\/www.thorntonweather.com\/blog\/?p=2851"},"modified":"2010-07-12T07:31:21","modified_gmt":"2010-07-12T13:31:21","slug":"july-11-to-july-17-this-week-in-denver-weather-history","status":"publish","type":"post","link":"https:\/\/www.thorntonweather.com\/blog\/weather-history\/july-11-to-july-17-this-week-in-denver-weather-history\/","title":{"rendered":"July 11 to July 17 – This week in Denver weather history"},"content":{"rendered":"
\"July<\/a>
July 11 to July 17 - This week in Denver weather history<\/figcaption><\/figure>\n

As we move further into summer, we see a decrease in traditional things associated with severe weather like tornadoes.\u00a0 However, there is a corresponding increase in heavy rain as Colorado gets closer to its monsoon season.\u00a0 We see many occurences of dangerous flooding as well as damaging hail, deadly lightning and more as we look back at this week in Denver weather history.<\/p>\n

1-18\u00a0<\/p>\n

In 1874…a streak of 18 consecutive days of 90 degrees tied for second with another streak that was later set in the summer of 1901. The record of 24 consecutive days was established in the summer of 2008.<\/p>\n

6-23\u00a0<\/p>\n

In 1901…a streak of 18 consecutive days of 90 degrees tied for second with another streak set in the summer of 1874. The record of 24 consecutive days was established in the summer of 2008.<\/p>\n

7-25\u00a0<\/p>\n

In 1934…a streak of 15 consecutive days of 90 degrees ranked 5th on the list of hot streaks.\u00a0 The record of 24 consecutive days was established in the summer of 2008.<\/p>\n

11<\/p>\n

In 1872…heavy rainfall started at 4:00 pm and continued into the night.\u00a0 The heavy rainfall damaged homes and buildings in all parts of the city.\u00a0 Rainfall totaled 1.64 inches.
\n\u00a0
\nIn 1888…the temperature reached 100 degrees in downtown Denver.
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\nIn 1954…the high temperature climbed to 102 degrees at Stapleton Airport.
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\nIn 1970…a girl walking in a park in southeast Denver received eye and facial injuries when lightning struck nearby.\u00a0 Lightning also caused numerous power outages and heavy rainfall produced local flooding at several locations across metro Denver.
\n\u00a0
\nIn 1974…large hail up to 1 1\/2 inches in diameter fell in Thornton.
\n\u00a0
\nIn 1990…the worst hailstorm in American history in terms of dollar damage at the time battered metro Denver.\u00a0 Storm damage totaled 605 million dollars…as it cut a 5-to 10-mile wide swath from just southeast of Estes Park to northeast of Colorado springs.\u00a0 Hail as large as baseballs (2.75 inches) pounded metro Denver.\u00a0 Hardest hit areas were southeast Boulder County…the Jefferson County Airport in Broomfield… Arvada…east Wheat Ridge…southwest and south-central Westminster…west Thornton…northwest…west-central and downtown Denver…northeast and east-central Lakewood…just east of Littleton…portions of Arapahoe County west of I-25… And northern and central Douglas County near Castle Rock and franktown.\u00a0 Golf ball to baseball size hail severely damaged roofs on thousands of homes and buildings…battered tens of thousands of automobiles…windows…signs…street lights…and traffic signals…stripped paint…awnings…and trim from buildings…punched holes in the roofs of two homes in Arvada…knocked out power and telephone service to thousands of homes and businesses…defoliated thousands of trees…ripped up greens and fairways on a number of golf courses…and severely damaged several aircraft tied down at Jefferson County Airport.\u00a0 Hail the size of baseballs fell for several minutes in old town Arvada.\u00a0 Later…golf ball size hail and heavy rain pummeled two northwest Denver amusement parks.\u00a0 Hardest hit was Elitch Gardens amusement park where 47 people were injured and received treatment for bumps…cuts…and bruises at local hospitals.\u00a0 Many of the injured were stranded on rides during the storm when power failed.\u00a0 Hail clogged storm sewers…causing rain water to back up 3 to 6 feet deep on some roads and intersections in Arvada.\u00a0 Several basements were flooded.\u00a0 In some places hail was washed into drifts several feet deep.\u00a0 In addition… The storm spawned 2 small tornadoes.\u00a0 One touched down briefly in Lakewood near 6th avenue and Kipling Blvd….but did no damage.\u00a0 In Castle Rock…a tornado (f1) did heavy damage to some homes and vehicles in the Founders Village development near Ridge Road.
\n\u00a0
\nIn 2001…lightning struck two homes in Thornton.\u00a0 Most of the damage was confined to the attics of both homes.\u00a0 Hail as large as 3\/4 inch in diameter fell in Keenesburg…Longmont… And near Boulder.<\/p>\n

11-12<\/p>\n

In 1872…heavy rain from 4:00 pm until 2:00 am caused much damage.\u00a0 Rainfall totaled 1.76 inches.<\/p>\n

12<\/p>\n

In 1881…during the early evening…a brisk rain fell for 30 minutes from a nearly clear sky containing not one tenth of clouds with the sun shining brightly.\u00a0 Rainfall was 0.16 inch.
\n\u00a0
\nIn 1885…thunderstorms produced widespread lightning across the city during the evening.\u00a0 Several people were injured when their homes were struck by lightning.
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\nIn 1954…the high temperature reached 101 degrees at Stapleton Airport.
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\nIn 1962…lightning struck and killed a Denver man…while he was assisting a co-worker with his car.
\n\u00a0
\nIn 1971…the temperature climbed to a high of 101 degrees at Stapleton International Airport.
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\nIn 1974…hail to 3\/4 inch in diameter fell in Castle Rock.
\n\u00a0
\nIn 1991…hail to 2 inches in diameter fell in Thornton with golf ball size hail in Brighton.\u00a0 Dime size hail was recorded in the city of Denver.\u00a0 Very heavy rain caused flooding across metro Denver.\u00a0 Water was up to 2 feet deep in parts of Golden where one foot of water was reported in the lot of a mobile home park.\u00a0 Flood water washed away part of a parking lot at the Colorado school of mines in Golden. Heavy rain caused a rock slide and flooding along I-70 in the foothills just west of Denver.\u00a0 Flood waters were a foot deep at the intersection of I-70 and I-25 just north of downtown Denver.\u00a0 A funnel cloud was sighted just east of the Rocky Mountain Arsenal.
\n\u00a0
\nIn 1996…very heavy rainfall from a fast moving thunderstorm dumped 2 to 3 inches of rain within an hour over southern Jefferson County.\u00a0 Two people were killed near the town of Buffalo Creek when a 20-foot wall of water flooded the area.\u00a0 Utility poles and trees were uprooted; cars… Propane tanks…and bridges were destroyed in the flood’s path.\u00a0 Entire buildings were moved from their foundations and heavily damaged by the floodwaters.\u00a0 The first fatality occurred along State Highway 126 when the driver of a pick-up truck was washed off the road by the deadly wall of water.\u00a0 The second death occurred farther upstream when a man in a 5th-wheel trailer was washed away.\u00a0 This was the second disaster to strike the area in the last couple of months.\u00a0 The community was already recovering from a wildfire which burned about 12 thousand acres of forest land in late May.\u00a0 With the forest burned by fire…very little vegetation was available to slow the storm’s runoff…which resulted in the flash flood.\u00a0 Power…water…and sewer service were heavily damaged in the flood and…in some cases…beyond repair.\u00a0 The cost of repairing the roads and water system in the area was estimated at around a half million dollars.\u00a0 Elsewhere across metro Denver…severe thunderstorms produced hail…damaging winds…and small tornadoes.\u00a0 Weak tornadoes (f0) were reported in Broomfield… 3 miles east of Englewood…and in Dacono.\u00a0 No damage was reported…except a trampoline was blown into a window and several trees were downed in Broomfield.\u00a0 Thunderstorm wind gusts estimated as high as 60 mph blew a fence down in Louisville where winds also toppled a tree near a house. The house received only minor damage.\u00a0 Large hail…strong winds and heavy rain caused substantial property damage in portions of southeastern Boulder and northern Jefferson counties.\u00a0 Damage estimates in the Broomfield area alone were about 1 million dollars.\u00a0 Winds gusted to 81 mph in Broomfield.\u00a0 Large hail…3\/4 to 1 1\/2 inches in diameter fell in Evergreen…Lakewood…Englewood…Broomfield…near Morrison…northeast of Boulder…and just east of Denver International Airport.
\n\u00a0
\nIn 2000…heavy rain fell across a portion of the Hi Meadow Fire burn area near Buffalo Creek…causing localized flooding.\u00a0 About 3\/4 inch of rain fell in 30 minutes over Miller Gulch.\u00a0 Some culverts become plugged by debris from the fire.\u00a0 As a result…small sections of a U.S. Forest Service road along Miller Creek were washed out.\u00a0 Lightning struck a home in Castle Rock…causing extensive damage to the roof…attic…and second floor.<\/p>\n

13<\/p>\n

In 1902…west winds were sustained to 42 mph with gusts to 48 mph.
\n\u00a0
\nIn 1910…an apparent dry microburst produced northeast winds sustained to 41 mph.
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\nIn 1961…hail as large as 1 inch in diameter was reported near Commerce City.
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\nIn 1982…a tornado touched down briefly south of Parker.\u00a0 No damage was reported.
\n\u00a0
\nIn 1985…thunderstorms drenched the Highlands Ranch area of northern Douglas County with 1.50 inches of rain in just 30 minutes.\u00a0 Half an inch of rain fell in 15 minutes in Littleton.
\n\u00a0
\nIn 1986…a lightning bolt struck a church steeple in Littleton…toppling it to the ground.
\n\u00a0
\nIn 1989…thunderstorm winds blew down trees and bent a metal basketball fixture just north of Castle Rock in the Surrey Ridge area.
\n\u00a0
\nIn 1993…1 inch diameter hail was measured in Lakewood.
\n\u00a0
\nIn 1995…lightning struck and injured an assistant coach during a baseball game at Highlands Ranch south of Denver.
\n\u00a0
\nIn 1996…3\/4 inch diameter hail fell in Lochbuie with 1 1\/2 inch hail measured in Brighton.\u00a0 Thunderstorm winds gusted to 69 mph at Bennett.\u00a0 The strong winds were responsible for flipping three semi-trailer trucks onto their sides along I-70…3 miles east of Bennett.\u00a0 A few cars were also overturned.
\n\u00a0
\nIn 2001…heavy thunderstorm rain caused flash flooding over south metro Denver.\u00a0 Three inches of rain reportedly fell near the greenwood village police department in the span of 15 minutes.\u00a0 The heavy rain caused Toll Gate Creek to overflow…flooding low lying areas along Parker Road. Heavy rainfall also caused local flooding along streets near the Denver Technology Center.\u00a0 A severe thunderstorm dumped hail to 1 3\/4 inches in diameter near Castle Rock.
\n\u00a0
\nIn 2003…maximum temperature of 100 degrees was a record high for the date.
\n\u00a0
\nIn 2009…severe thunderstorms produced wind gusts to 70 mph near Parker and Strasburg.\u00a0 At Denver International Airport…west-northwest winds gusted to 40 mph.<\/p>\n

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

In 2008…a streak of 24 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

14<\/p>\n

In 1878…the temperature reached a high of 100 degrees in downtown Denver.
\n\u00a0
\nIn 1906…a thunderstorm produced north winds sustained to 52 mph and 0.53 inch of rain in 10 minutes.
\n\u00a0
\nIn 1912…a heavy thunderstorm cloudburst in the late afternoon combined with a similar storm to the south of the city to produce widespread flooding on Cherry Creek in downtown Denver…which resulted in two deaths and several injuries. The flooding was the worst since 1864 and covered around 3 square miles of lower downtown.\u00a0 Bridges along Cherry Creek were washed out and water lapped at the floor of the Broadway bridge over the South Platte River…causing authorities to declare it unsafe except for pedestrians.\u00a0 By nightfall… Union Depot was under 2 to 3 feet of water…and railroad and street car traffic was stalled.\u00a0 Those forced from their homes by the surging flood waters took refuge in the Denver auditorium.\u00a0 The flood waters caused great damage to the sewerage system…parkways…bridges and residences and commercial warehouses near Cherry Creek in the wholesale district.\u00a0 Flood damage was estimated at several million dollars.\u00a0 Heavy thunderstorm rainfall of 2.00 inches…of which nearly 1.75 inch fell in 30 minutes in central Denver… Was accompanied by severe thunderstorm winds sustained to 55 mph with gusts as high as 74 mph.
\n\u00a0
\nIn 1933…thunderstorm rainfall was only 0.01 inch…but northwest winds sustained to 37 mph with gusts to 47 mph produced a dust storm for about 10 minutes during the late afternoon.
\n\u00a0
\nIn 1967…heavy rain flooded areas of north and west metro Denver…and high water closed street intersections in the city.\u00a0 Crops were damaged…and 200 chickens drowned by flooding northwest of Denver where farm buildings and irrigation facilities were also damaged.
\n\u00a0
\nIn 1969…a thunderstorm wind gust to 51 mph was recorded at Stapleton International Airport.
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\nIn 1975…heavy rains caused locally heavy flash flooding along Niver Creek south of Thornton and in other parts of north metro Denver.\u00a0 Over 40 thousand dollars in damage to public property was reported…and numerous homes and yards were damaged.
\n\u00a0
\nIn 1986…thunderstorm winds blew down a power line in west- central Jefferson County.\u00a0 The storm…as it moved into Denver…snapped tree limbs and damaged a fence near Washington Park.\u00a0 Wind gusts in the area were estimated at 80 to 85 mph.
\n\u00a0
\nIn 1990…thunderstorm wind gusts to 58 mph were recorded at Buckley Field in Aurora.\u00a0 No damage was reported.\u00a0 Winds gusted to 44 mph at Stapleton International Airport.
\n\u00a0
\nIn 1993…a severe thunderstorm moved across southern sections of metro Denver.\u00a0 Dime size hail fell in Lakewood…and hail up to one inch diameter was measured at Cheery Creek Reservoir.\u00a0 Later in the afternoon…hail to one inch diameter fell in Golden and Arvada.
\n\u00a0
\nIn 1994…hail to 1 1\/4 inches in diameter fell north of Bennett.
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\nIn 1998…dry microburst winds estimated to 70 mph snapped tree branches up to 4 inches in diameter in Brighton where some road signs were twisted and blown down.\u00a0 At Denver International Airport…dry microburst winds gusted to 61 mph.
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\nIn 1995…thunderstorm winds gusted to 62 mph near Strasburg.
\n\u00a0
\nIn 2001…a severe thunderstorm dumped hail to 3\/4 inch in diameter in the foothills about 10 miles northwest of Golden.<\/p>\n

14-15<\/p>\n

In 1985…thunderstorms dumped heavy rain and hail at numerous locations along the Front Range from Denver north.\u00a0 Some of the heaviest rain fell in northern and western suburbs of Denver.\u00a0 Up to 2.6 inches of rain drenched Arvada…and Thornton was soaked with 2 inches in 45 minutes.\u00a0 At least 5 homes in Arvada suffered extensive damage from water and mud…and many streets and basements were flooded.\u00a0 In southern Jefferson County…11 homes were struck by lightning.<\/p>\n

15<\/p>\n

In 1879…a terrific hail storm occurred in the vicinity of of buffalo station on the south park railroad in the South Platte River Canyon about 39 miles south of Denver. Stones as large as hen’s eggs fell thick and fast and broke nearly every pane of glass in the windows of the building. A “waterspout” or cloudburst caused much loss of property from flash flooding on a nearby gulch.\u00a0 The torrent of water caused a deafening roar as it uprooted trees and carried huge Boulders and other debris.\u00a0 It struck the house and sawmill simultaneously and carried them away like straws…leaving little behind.\u00a0 The water continued to rush down the gulch for several hours.\u00a0 Serious damage was done to the south park railroad.\u00a0 The track and roadbed were destroyed for several miles.\u00a0 At about the same time…heavy rains in the vicinity of the headwaters of Cherry Creek produced a rapid rise in the creek…which drowned a few head of cattle and washed away two footbridges and some fences.\u00a0 Only 0.10 inch of rainfall was recorded in Denver.
\n\u00a0
\nIn 1896…a thunderstorm produced sustained southwest winds to 40 mph with gusts to 46 mph.
\n\u00a0
\nIn 1902…the temperature reached a high of 100 degrees in downtown Denver…which was a record maximum for the date.
\n\u00a0
\nIn 1929…a thunderstorm did considerable damage to property in the eastern portion of the city.\u00a0 Heavy hail ranging in size from 1\/4 to 3\/4 inch in diameter…severe lightning… And high winds accompanied the heavy rain.\u00a0 Basements were flooded…and streets were impassable in places for several hours due to the heavy rainfall.\u00a0 Lightning damaged several telephone poles.\u00a0 Hail did extensive damage to gardens and flowers.\u00a0 The hail was up to a foot deep in places.\u00a0 There was no estimate of damage from the storm.\u00a0 A thunderstorm produced only a trace of rain and east winds to 24 mph in downtown Denver.
\n\u00a0
\nIn 1959…thunderstorm rain totaled 0.41 inch in 8 minutes and winds gusted to an estimated 50 mph near downtown Aurora where half inch diameter hail was also reported. After the storm moved to the east…complete double rainbows were observed from the weather bureau office at Stapleton Airport.
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\nIn 1962…hail pelted the area in Adams County around Henderson and Brighton…causing extensive damage to corn…grain… Beets…and row crops.\u00a0 Crop damage was estimated at 250 thousand dollars.
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\nIn 1963…a man received severe burns when struck by lightning while painting a building in south Denver.
\n\u00a0
\nIn 1965…a state patrolman sighted a tornado near Bennett.\u00a0 It touched down over open ground…but caused no damage.
\n\u00a0
\nIn 1967…heavy rains flooded streets and underpasses in south Denver.\u00a0 Heavy rain and minor wind damage were reported in Wheat Ridge…Aurora…Englewood…and Littleton.\u00a0 Basements were flooded and power disrupted.\u00a0 The clouds and rain resulted in a high temperature of only 72 degrees…which was a record low maximum for the date.
\n\u00a0
\nIn 1974…a severe lightning storm damaged several homes and caused a number of power outages in both Denver and western Arapahoe counties.
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\nIn 1975…lightning killed a girl west of Boulder.
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\nIn 1982…winds gusted to 60 mph at Stapleton International Airport…and strong winds blew down walls at a construction site in Aurora where a nearby tree was uprooted.
\n\u00a0
\nIn 1985…0.79 inch of rain fell in 30 minutes at Castle Rock.\u00a0 Much of the town lost power when lightning struck the town’s transformer.
\n\u00a0
\nIn 1992…a man was struck by lightning while horseback riding near Castle Rock.\u00a0 Two people were struck by lightning near Highlands Ranch in south metro Denver.\u00a0 A man was struck by lightning while riding in the back of a pick-up truck in Franktown.\u00a0 All received minor injuries.\u00a0 Strong thunderstorms moved through east metro Denver…producing large hail and flash flooding.\u00a0 Hail up to 1 1\/4 inches in diameter fell near Buckley Air National Guard base. Rainfall of 1 to 3 inches fell in Aurora in less than an hour…leaving water up to 18 inches deep in some areas. Thunderstorm rainfall was measured at 0.97 inch at Stapleton International Airport…where 3\/8th inch diameter hail fell and south winds gusted to 44 mph.
\n\u00a0
\nIn 1993…dime size hail fell in Golden.\u00a0 National weather service observers at Stapleton International Airport sighted a small rope-like funnel overhead for about 3 minutes before it dissipated.
\n\u00a0
\nIn 1994…a small…short-lived tornado caused damage to a house under construction in Parker.
\n\u00a0
\nIn 1995…thunderstorm winds of unknown strength downed trees and branches…damaging a porch and nearby cars in Denver.
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\nIn 1998…hail to 7\/8 inch in diameter fell near Keenesburg.
\n\u00a0
\nIn 2000…this date marked the end of a near record hot streak for metro Denver.\u00a0 The high temperature at Denver International Airport equaled or exceeded the 90-degree mark for 17 consecutive days…from June 29th.\u00a0 This was one day short of equaling the all time record.\u00a0 The record of 18 consecutive days was set in two different years…July 1st-18th…1874 and July 6th-23rd…1901.
\n\u00a0
\nIn 2005…severe thunderstorms produced large hail over southeast metro Denver.\u00a0 Hail as large as 1.75 inches in diameter fell in southwest Aurora along with 7\/8 inch hail in Centennial.\u00a0 Hail to 3\/4 inch in diameter was measured near Centennial Airport and near Watkins.<\/p>\n

15-16<\/p>\n

In 2006…a brief mid July hot spell resulted in two 100 plus degree high temperatures and two daily maximum temperature records.\u00a0 The high temperature climbed to 101 degrees on the 15th and 103 degrees on the 16th at Denver International Airport.
\n16<\/p>\n

In 1911…thunderstorm winds were sustained to 44 mph from the northwest.
\n\u00a0
\nIn 1959…a thunderstorm produced 3\/8 inch diameter hail and a wind gust to 60 mph at Stapleton Airport.
\n\u00a0
\nIn 1972…two tornadoes were sighted by the public to the southeast of Aurora.\u00a0 No damage was reported.
\n\u00a0
\nIn 1978…a thunderstorm wind gust to 52 mph was recorded at Stapleton International Airport.
\n\u00a0
\nIn 1980…a severe thunderstorm ripped through metro Denver… Producing torrential rain…large hail…and strong winds.\u00a0 In Aurora…winds gusted to 65 mph with hail up to 1 1\/2 inches in diameter and half an inch of rain in just 10 minutes. Stapleton International Airport was closed for an hour. Large hail also fell in southeast Denver…Lakewood…Parker… And Castle Rock.\u00a0 Up to 1 1\/2 inches of rain fell in just 40 minutes.\u00a0 Heavy rains in wheat ridge flooded a shopping center…breaking windows and doors…while causing 100 thousand dollars in damage.\u00a0 Some roofs and windows were damaged throughout metro Denver.\u00a0 At Stapleton International Airport where west winds gusted to 49 mph…1\/4 inch hail and 0.77 inch of rain fell.
\n\u00a0
\nIn 1983…severe thunderstorms dumped large hail over much of metro Denver.\u00a0 Hail to 3\/4 inch in diameter fell in Littleton and Northglenn…with 3\/4 to 1 inch hail in Arvada…1 to 1 1\/2 inch hail in extreme northwest Denver…1 3\/4 inch hail in Lakewood…1 1\/2 inch hail in south Arvada and just northeast of Aurora…and 1 5\/8 inch hail on Green Mountain.
\n\u00a0
\nIn 1994…spotters reported a brief tornado touchdown in an open field just north of Fort Lupton.\u00a0 No damage or injuries were reported.
\n\u00a0
\nIn 2000…very moist and unstable weather conditions…along with low level upslope flow during the late afternoon and evening…combined to produce heavy thunderstorm rainfall… Which caused urban and small stream flooding across metro Denver.\u00a0 Rainfall amounts generally ranged from 1 to 3 inches with the heaviest rainfall occurring during the evening hours. Two miles east of white ranch in northern Jefferson County… An automated rain gage measured 3.86 inches of rain.\u00a0 Since the rain fell in a relatively open area…no flood damage was reported.\u00a0 However…in Greenwood Village near the intersection of Peoria and Belleview…the streets were closed for several hours with as much as 2 feet of standing water covering the roadways.\u00a0 Two campers near Mt. Evans were injured by lightning and stranded overnight by the inclement weather.\u00a0 Both received minor injuries.
\n\u00a0
\nIn 2003…the high temperature of 101 degrees was a record maximum temperature for the date.
\n\u00a0
\nIn 2004…locally heavy rainfall of unknown amount caused parts of the Virginia Canyon Road near Idaho Springs to wash out.\u00a0 The road had to be closed temporarily.
\n\u00a0
\nIn 2005…the temperature climbed to a high of 102 degrees at Denver International Airport.\u00a0 This was a new record maximum temperature for the date at the time.<\/p>\n

16-18<\/p>\n

In 1997…an extended hot spell resulted in 3 temperature records being set.\u00a0 The maximum temperature reached 98 degrees on each of the days…setting records on the 16th and 18th.\u00a0 The low temperature of 71 degrees on the 17th was a record high minimum for the date.\u00a0 The high temperature reached 100 degrees on the 17th at the site of the former Stapleton International Airport.
\n17<\/p>\n

In 1872…the U.S. Army Signal Service weather observer recorded snowfall during the early morning hours in the hand written daily weather journal:\u00a0 “rain commenced at 1:30 a.m. changing about 3 a.m. to snow & in about half an hour to rain again; it continued until 6 a.m.”\u00a0 this is the only recorded occurrence of snowfall in Denver in July…but this report is not included in the “official” station snowfall records…which did not begin in Denver until January 1…1882.\u00a0 The low temperature on this morning was 45 degrees…which is sufficiently cold for the occurrence of light stratiform snowfall.
\n\u00a0
\nIn 1918…a thunderstorm produced hail to an inch in depth on the ground.\u00a0 The stones varied in size from a small cherry stone to nearly 1\/2 inch in diameter.\u00a0 Not much permanent damage was done to crops.\u00a0 Precipitation totaled 0.40 inch…and northeast winds were sustained to 25 mph with gusts to 28 mph.
\n\u00a0
\nIn 1971…the temperature reached a high of 101 degrees at Stapleton International Airport.
\n\u00a0
\nIn 1983…3\/4 inch diameter hail fell at Lafayette…while golf ball size hail pelted Brighton and Northglenn where funnel clouds were also sighted.
\n\u00a0
\nIn 1986…1 1\/2 inches of rain fell in an hour and 15 minutes in southeastern Aurora.\u00a0 Thunderstorm rainfall totaled 0.89 inches at Stapleton International Airport.
\n\u00a0
\nIn 1987…a small tornado was sighted near Watkins…in the vicinity of Front Range airport.
\n\u00a0
\nIn 1997…lightning ignited an oil well tank holding 10 thousand gallons of oil…16 miles northwest of Bennett. About 200 acres of grassland burned before the fire could be extinguished.\u00a0 A dry microburst produced a wind gust to 52 mph at Denver International Airport.
\n\u00a0
\nIn 2000…an estimated 2 inches of rain fell in less than an hour…causing two secondary roads in buck and miller gulches in the hi meadows fire burn area to wash out.\u00a0 Water also covered Jefferson County road 68 which connects to Bailey.\u00a0 Homeowners in pine valley estates attempted to divert some of the runoff by piling stacks of hay on the hillside above their homes.\u00a0 Torrential rainfall…up to 3.50 inches an hour…caused flash flooding along whiskey gulch near Elizabeth.\u00a0 Several roads were washed out and basements flooded during the storm.\u00a0 Along County Road 13… About 6 miles north-northwest of Elizabeth…rushing water washed away a 15-foot section of the road.\u00a0 The floodwaters forced debris and mud into four huge culverts…sending water over the road.\u00a0 At Denver International Airport…an united airlines ground crew worker was struck by lightning as she was loading a Boeing 747 jumbo jet.\u00a0 The woman was injured when lightning either hit the jet or the loading equipment that she was working near.\u00a0 The 25-year-old woman received only minor injuries.
\n\u00a0
\nIn 2006…outflow from severe thunderstorms to the southeast of metro Denver produced southeast sustained winds to 35 mph with gusts as high as 52 mph at Denver International Airport during the late evening.<\/p>\n","protected":false},"excerpt":{"rendered":"

As we move further into summer, we see a decrease in traditional things associated with severe weather like tornadoes.\u00a0 However, there is a corresponding increase in heavy rain as Colorado gets closer to its monsoon season.\u00a0 We see many occurences of dangerous flooding as well as damaging hail, deadly lightning and more as we look … Continue reading July 11 to July 17 – 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":[63],"tags":[81,106,62,741],"_links":{"self":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/2851"}],"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=2851"}],"version-history":[{"count":1,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/2851\/revisions"}],"predecessor-version":[{"id":2852,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/2851\/revisions\/2852"}],"wp:attachment":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/media?parent=2851"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/categories?post=2851"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/tags?post=2851"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}