{"id":20790,"date":"2020-07-07T03:48:00","date_gmt":"2020-07-07T09:48:00","guid":{"rendered":"http:\/\/www.thorntonweather.com\/blog\/?p=20790"},"modified":"2020-07-07T07:50:13","modified_gmt":"2020-07-07T13:50:13","slug":"july-5-to-july-11-this-week-in-denver-weather-history-3","status":"publish","type":"post","link":"https:\/\/www.thorntonweather.com\/blog\/weather-history\/july-5-to-july-11-this-week-in-denver-weather-history-3\/","title":{"rendered":"July 5 to July 11: This week in Denver weather history"},"content":{"rendered":"

\"This<\/a><\/p>\n

Our look back at this week in Denver weather history reminds us that severe weather can continue to strike, even during what is normally a relatively calm month. Lightning, hail and flooding are three continuous threats as we see during our look back at history this week.<\/p>\n

From the National Weather Service:<\/p>\n

29-15<\/p>\n

In 2000\u2026the 29th marked the beginning of a near record hot streak for metro Denver. The high temperatures\u2026as recorded at Denver International Airport\u2026exceeded the 90 degree mark for 17 consecutive days from June 29th through July 15th. This was one day short of equaling the all time record. The record of 18 consecutive 90 degree or above days was first set from July 1st through July 18th\u20261874. The record was equaled from July 6th through July 23rd\u20261901.<\/p>\n

1-18<\/p>\n

In 1874\u2026a 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

1-31<\/p>\n

In 2012\u2026it was the hottest July on record in Denver since weather records began in 1872. The average temperature for the month was 78.9 degrees which was 4.7 degrees above normal. There were 27 days in which the high temperature equaled or exceeded 90 degrees\u2026which established a new record. There were also 7 days in which the temperature equaled or exceeded 100 degrees which tied the record set in 2005.<\/p>\n

4-5<\/p>\n

In 1875\u2026nearly every railroad running into the city was damaged by heavy thunderstorm rains. The heavy rains washed out wooden bridges over normally dry creeks. Some trains were entirely suspended. In the city\u2026heavy thunderstorm rain totaled 1.05 inches on the 4th\u2026but only 0.28 inch on the 5th.<\/p>\n

4-8<\/p>\n

In 1989\u2026one of the most intense heat waves on record roasted metro Denver. The temperature reached 100 degrees or more on 5 consecutive days. The city had previously never recorded more than 2 straight 100-degree days since records began in 1872. Water and electricity usage reached all time highs. The heat wave created extremely dry weather conditions\u2026which contributed to a major forest fire in Boulder canyon on July 9th. The temperature reached 103 degrees on the 8th\u2026and the mercury climbed to 101 degrees on both the 4th and 5th\u2026and to 102 degrees on both the 6th and 7th. The low temperature of 68 degrees on the 8th equaled the record high minimum for the date.<\/p>\n

5<\/p>\n

In 1908\u2026a late evening thunderstorm produced sustained north winds to 40 mph\u2026hail\u2026and 0.45 inch of precipitation.<\/p>\n

In 1949\u2026a dust devil\u2026possibly a small tornado\u2026was observed 3 miles to the northwest of Stapleton Airport.<\/p>\n

In 1973\u2026the temperature reached 100 degrees at Stapleton International Airport.<\/p>\n

In 1974\u2026strong thunderstorm winds damaged a mobile home\u2026a barn\u2026two houses\u2026and several sheds near Watkins.<\/p>\n

In 1975\u2026a thunderstorm wind gust to 53 mph was recorded at Stapleton International Airport. Hail up to 3\/4 inch in diameter fell over the northwest suburbs and in northwest Denver.<\/p>\n

In 1977 three houses in Denver were struck by lightning. Some heavy damage and fire occurred.<\/p>\n

In 1990\u2026lightning caused minor damage to houses in Castle Rock\u2026Louviers\u2026and Littleton.<\/p>\n

In 1996\u2026lightning caused only minor damage when it struck a home in Evergreen. Lightning from a fast moving thunderstorm blasted a large hole in the side of a house in Lakewood. Lightning triggered a minor power outage in the Boulder area. About 200 homes were affected.<\/p>\n

In 2001\u2026severe thunderstorm winds gusted to 60 mph at Denver International Airport and to 70 mph\u20267 miles southwest of the airport.<\/p>\n

In 2008\u2026microburst winds downed a large tree and some power lines near a Denver apartment complex. Several of the tenants\u2019 vehicles were damaged.<\/p>\n

In 2009\u2026a wet microburst produced very strong winds in and just east of Denver.\u00a0 A peak wind gust of 69 mph was measured 1.5 miles east of Denver.\u00a0 In addition\u20261.50 inches of rain fell in 30 minutes.\u00a0 A peak wind gust to 68 mph was also observed near byers.\u00a0 Southwest winds gusted to 31 mph at Denver International Airport.\u00a0 The airport also received 0.30 inches of rainfall.<\/p>\n

6<\/p>\n

In 1876\u2026the high temperature reached 101 degrees in downtown Denver.<\/p>\n

In 1943\u2026four people were injured by lightning in Denver during a severe early evening thunderstorm. At least two houses were set on fire by the lightning. One house had 1500 dollars in damage and the other 1000 dollars.<\/p>\n

In 1959\u2026wind and lightning caused some damage in metro Denver. Wind gusts to 67 mph blew down power lines\u2026signs\u2026 And trees. Lightning struck several transformers\u2026leaving many areas without power.<\/p>\n

In 1971\u2026a microburst wind gust to 68 mph was recorded at Stapleton International Airport.<\/p>\n

In 1973\u2026the temperature reached a high of 103 degrees. This was the second consecutive day with a temperature of 100 degrees or more.<\/p>\n

In 1984\u2026a weak tornado moved through eastern Aurora. About 10 homes sustained minor damage to roofs; some sections of fence were thrown more than a block. Soft hail\u2026an inch in diameter\u2026fell over central Aurora\u2026and 1.35 inches of rain fell in just 45 minutes\u20265 miles east of Buckley Field. Torrential rain and hail stopped traffic on I-225 in central Aurora for 15 minutes. Street flooding was widespread. A wind gust to 57 mph was recorded in southeast Aurora. A wind gust to 66 mph was reported at Front Range airport near Bennett. Northwest winds gusted to 44 mph at Stapleton International Airport where only 1\/8 inch hail fell.<\/p>\n

In 1986\u2026one inch diameter hail fell near Conifer in the foothills west of Denver. The storm produced 1.50 inches of rain in an hour with a storm total of 2.15 inches. Nearby buffalo creek was drenched with 0.80 inch of rain in just 10 minutes.<\/p>\n

In 1996\u20263\/4 inch diameter hail fell in Bennett\u2026east of Denver. Hail\u2026as large as 1 1\/2 inches in diameter\u2026 Damaged several vehicles in the parking lot of the Colorado Speedway race track near Dacono north of Denver. Several trees were also damaged.<\/p>\n

In 2001\u2026a severe thunderstorm wind gust to 59 mph was recorded at Denver International Airport\u2026along with small hail.<\/p>\n

In 2009\u2026hail up to 1 inch in diameter was observed near Longmont.<\/p>\n

In 2010\u2026heavy rain caused flash flooding near interstate 70 at the Byers exit.\u00a0 Two feet of water was observed moving across the bottom of exit ramp.\u00a0 One car was washed into a tree but no one was injured.\u00a0 In addition\u2026severe thunderstorms produced hail up to 1 1\/2 inches in diameter near Franktown.\u00a0 At Denver International Airport\u2026only 0.01 inches of rainfall was observed.\u00a0 A peak wind gust to 45 mph from the west was also recorded.<\/p>\n

<\/span>7<\/p>\n

In 1905\u2026a thunderstorm produced sustained northeast winds to 40 mph\u2026but only a trace of rain.<\/p>\n

In 1933\u2026heavy cloudbursts during the afternoon in the Idledale area and on Saw Mill Gulch caused flash flooding on bear creek resulting in 7 deaths. Flooding in Morrison was compounded when a wall of water as high as 15 feet swept down Mount Vernon Creek. The flooding caused extensive damage to the Bear Creek Canyon Highway.<\/p>\n

In 1959\u2026wind gusts to 45 mph at Stapleton Airport\u2026but higher in other areas\u2026damaged power lines and buildings and caused widespread minor damage from falling trees and broken limbs. A field house under construction at Adams County High School in Commerce City sustained severe damage.<\/p>\n

In 1963\u2026farm buildings east of Boulder were possibly damaged by a small tornado as there were unconfirmed reports of a funnel cloud in the area.<\/p>\n

In 1967\u2026a storm of cloudburst proportion caused damage from flooding in southwest and south Denver. Unofficial reports indicated rainfall of 2.00 inches in 30 minutes and more than 3.00 inches total from the storm. Streets and buildings were flooded by the heavy run-off. Hail in some areas contributed to flooding by blocking storm drains. Water accumulated 12 to 14 feet deep in several underpasses and some street intersections. A young woman drowned when she tried to cross a flooded street and was swept off her feet and trapped under a parked car. Water reached a depth of 5 feet in the street. Police rescued numerous stranded motorists. The roof and wall of a flat roofed store building collapsed under the weight of deep water on the roof. Cars were washed over curbs in many areas. In southwest metro Denver\u2026100 to 150 homes were flooded. Hail caused damage in other areas of Denver and in Aurora. Wind toppled trees in several areas. Snowplows were called out to clear hail from some highways and runways at Stapleton International Airport. Lightning damaged trees and power lines and started a fire\u2026which extensively damaged an automobile dealership. Thunderstorm rainfall totaled 0.83 inch at Stapleton International Airport.<\/p>\n

In 1981\u2026severe thunderstorms produced 3\/4 inch hail over east Denver. About 1 1\/2 inches of rain fell in Littleton. Thunderstorm winds gusted to 45 mph at Stapleton International Airport.<\/p>\n

In 1983\u2026tennis ball size hail fell about 5 miles north of Boulder; it was soft and caused no damage.<\/p>\n

In 1987\u2026a weak tornado touched down in Castle Rock. Several weak tornadoes were observed in the area. No damage was reported.<\/p>\n

In 1988\u2026lightning struck a sign at a bank near Louisville\u2026 Damaging it and causing a smoldering fire that resulted in smoke damage to the bank and an adjacent building. Heavy thunderstorm rain\u2026accompanied by 1\/2 inch diameter hail at Stapleton International Airport\u2026briefly reduced the visibility to 1\/4 mile. Rainfall totaled 1.41 inches\u2026 But 1.12 inches fell in 32 minutes.<\/p>\n

In 2001\u2026severe thunderstorms dumped large hail across north metro Denver. Hail to 1 3\/4 inches in diameter fell near Erie with 7\/8 inch hail measured in Thornton.<\/p>\n

In 2004\u2026a 9-year-old boy was struck by lightning while at a playground in Arvada. The umpire at a nearby baseball game\u2026along with 2 passers-by\u2026administrated CPR and resuscitated the boy who had quit breathing. The boy suffered first and second degree burns\u2026but was released from the hospital in less than 24 hours. A dry microburst over Denver International Airport produced a recorded peak wind gust to 61 mph.<\/p>\n

In 2006\u2026up to 3 inches of heavy thunderstorm rainfall in the Hayman Wildfire burn area produced destructive flash flooding along west creek between the towns of Deckers and Westcreek in southwest Douglas County. Horse creek\u2026which drains into west creek\u2026swelled from a normally small creek into a raging torrent\u202625 to 30 feet deep and 300 feet wide. The wall of water damaged or destroyed about 30 sections of a 5 mile stretch of State Highway 67\u2026which parallels west creek. Several homes were extensively damaged or destroyed. No injuries were reported\u2026but several people had to be rescued\u2026due to extensive damage to access roads and bridges in the area. Reconstruction was estimated at 13.3 million dollars.<\/p>\n

In 2011\u2026heavy rain associated with a wet microbursts produced over 3 inches of rain in 90 minutes across southeast Denver. In Denver\u2026some underpasses were flooded with several feet of water which stranded motorists. As a result\u2026the fire department conducted at least 10 water rescues. Some basements were inundated with up to 4 feet of water which caused extensive flood damage. The Platte Valley and Western Model Railroad Club`s model train display in Union Station was also damaged when 3 to 4 inches of mud and water spilled over some of the command and control systems. Several display modules and scenery pieces in a storage room were also damaged. The entire display spanned more than one thousand feet of track in a room that was once used as the jail at union station in the 1900s. Urban and small stream flooding was reported across the surrounding Denver suburbs. The storm left about 28000 Xcel customers without power when the storm snapped trees and power lines. In addition\u2026heavy rain produced flash flooding in the four mile canyon burn scar. Four debris slides occurred along four mile canyon drive\u2026including one that was 100 yards wide and 4 feet deep. Several rockslides were reported in Lefthand and Boulder canyons. At Denver International Airport\u20261.04 inches of rain was observed. A peak wind gust of 46 mph from the southeast was also observed.<\/p>\n

In 2012\u2026heavy rain produced flash flooding in Boulder County near Jamestown. James Canyon Drive was closed after heavy rain washed out a section of the roadway. Heavy rain washed out a section of Magnolia Road\u2026east-southeast of Nederland. Nearby\u2026a trained spotter 4 miles east-northeast of Nederland\u2026 Measured 2.20 inches of rainfall. Flash flooding was also reported in the Fourmile burn area along Summerville Road. In Dacono\u2026in southern Weld County\u2026 The Colorado Department of Transportation used snowplows to clear standing water\u2026up to 6 inches deep\u2026from a section of Interstate 25. The interstate was closed in both directions for nearly two hours. South of the Denver\u2026in central Douglas County\u2026 Flash flooding was reported near Perry Park\u2026where 2.5 inches of rain fell in one hour.<\/p>\n

In 2014\u2026an Arvada resident was injured by a nearby lightning strike while he recorded a video of a thunderstorm with his cell phone. He was standing in his garage\u2026when a nearby lightning bolt knocked him out. He suffered overall body aches and had a ringing sensation in one of his ears. In Denver\u2026 Lightning caused a power outage that affected the RTD light rail lines for a short time. In Castle Pines\u2026lightning sparked a small attic fire. Severe thunderstorms produced large hail\u2026from quarter to golfball size\u2026 And damaging winds across Arapahoe\u2026Boulder and Jefferson counties including: northwest Arvada\u2026Littleton and Louisville. Flash flooding was reported near Evergreen in central Jefferson County. Heavy rain\u2026up to 2 inches in one hour\u2026 Flooded several residences and washed out several bridges along forest estate road. Heavy rainfall also produced street flooding in Denver along with some basement flooding. The strong winds\u2026estimated to 60 mph\u2026 Downed trees and power lines in southwest Littleton. At Denver International Airport\u20260.15 inches of rainfall was observed along with a peak wind gust to 42 mph from the southeast.<\/p>\n

8<\/p>\n

In 1905\u2026a thunderstorm produced 0.82 inch of rainfall and northeast winds sustained to 48 mph.<\/p>\n

In 1977\u2026strong winds turned over 2 light aircraft at Arapahoe County airport\u2026now Centennial Airport.<\/p>\n

In 1987\u2026a weak tornado was observed near Bennett.<\/p>\n

In 1988\u2026three separate tornadoes were sighted near Bennett. No damage was reported. One inch diameter hail was also reported.<\/p>\n

In 1991\u2026lightning started three house fires in Castle Rock. Damage totaled 13 thousand dollars. No injuries were reported.<\/p>\n

In 1993\u2026a dry thunderstorm microburst wind gust to 55 mph briefly reduced the surface visibility to 3 miles at Stapleton International Airport.<\/p>\n

In 1997\u2026one construction worker was killed and two others injured when a strong thunderstorm wind gust caused the scaffolding they were standing on to collapse near Parker. A dry microburst produced a wind gust to 54 mph at Denver International Airport.<\/p>\n

In 1998\u2026heavy thunderstorm rain forced the closure of Hampden Avenue between I-25 and Havana Street in southeast Denver. The high water made 2 or 3 lanes of the street impassable.<\/p>\n

In 2001\u2026severe thunderstorms produced large hail\u2026damaging winds\u2026and heavy rain across south metro Denver. Two people received minor injuries when a severe thunderstorm wind gust to 58 mph blew over several tents at the Cherry Creek Arts Festival. The same storm caused the roof of a hardware store in Tamarac Square to collapse. One employee received minor injuries when she was struck in the head by falling debris. The combination of intense rain and wind downed trees and power lines. Electrical power outages affected 35 thousand homes and businesses. At least 50 trees in city parks across south Denver were damaged. Up to 4.50 inches of thunderstorm rain fell across portions of southeast metro Denver. The underpass at I-25 and Parker Road was inundated with 5 feet of water. Several other streets and underpasses in Aurora were also closed due to high water. Heavy rain caused extensive damage to several exhibits at the Cherry Creek Arts Festival. Flash flooding occurred when heavy thunderstorm rainfall caused Toll Gate Creek to jump its banks. Several underpasses across south Denver had to be closed due to high water. A man received minor injuries when lightning struck a nearby tree at the Wellshire Golf Course. Hail as large as 1 1\/4 inches in diameter fell in Englewood with 1 inch hail in the city of Denver\u2026and 3\/4 inch hail in Littleton. Thunderstorm winds gusted to 63 mph at Denver International Airport and to 62 mph in Englewood.<\/p>\n

In 2005\u2026a tornado touched down briefly near Brighton\u2026but caused no damage.<\/p>\n

In 2011\u2026severe thunderstorms produced hail\u2026 Up to 1 inch in diameter\u2026and wind gusts to 60 mph across parts of Adams\u2026Broomfield and Denver counties. At Denver International Airport\u2026a peak wind gust to 59 mph from the west.<\/p>\n

In 2017…a strong thunderstorm produced hail up to 7\/8 inch in diameter in southwest Denver.<\/p>\n

9<\/p>\n

In 1872\u2026a very brisk wind between 2:00 pm and 3:00 pm spread a cloud of dust and sand into the city.<\/p>\n

In 1874\u2026northeast winds at sustained speeds up to 36 mph blew immense clouds of dust from the prairie through the streets of the city around mid-morning. The houses across the street from the weather station were not visible at the peak of the storm.<\/p>\n

In 1875\u2026heavy thunderstorm rains caused stream flooding\u2026 Which damaged nearly all railroads into the city. Rainfall in the city was only 0.14 inch.<\/p>\n

In 1953\u2026heavy thunderstorm rains caused an estimated 2 million dollars damage from flooded stores and basements across metro Denver. The flood waters reached a depth of 3 feet on streets in some sections of the city\u2026damaging streets and automobiles. The heavy rainfall at Lowry Air Force Base totaled 3.90 inches. At Stapleton Airport where the heavy rain briefly reduced the surface visibility to 1\/2 mile\u2026only 1.05 inches of rain were measured. North winds gusting to 52 mph caused some damage in east Denver.<\/p>\n

In 1982\u2026two small tornadoes were spotted east of Rocky Flats\u2026 And a tornado touched down briefly 5 miles east of Brighton. No damage was reported.<\/p>\n

In 1984\u2026heavy rain fell over southern sections of metro Denver. Rainfall totaled 1.50 inches in just 15 minutes between Littleton and Sedalia.<\/p>\n

In 1987\u2026a thunderstorm microburst produced a wind gust of 58 mph at Erie north of Denver.<\/p>\n

In 1988\u2026hail to 3\/4 inch in diameter piled up 2 to 4 inches deep in Idaho Springs. Some basements were flooded and several thousand gallons of fuel were contaminated when water flooded a gasoline storage tank. A tornado sighted near Manilla 5 miles west of Bennett remained on the ground for 9 minutes. No damage was reported.<\/p>\n

In 1990\u2026a severe thunderstorm produced a tornado and heavy rain over northeast metro Denver. As much as 4 inches of rain fell in just 20 minutes in Commerce City\u2026causing the South Platte River to rise quickly and flood lowland areas. The raging flood waters caused extensive damage to a 30-foot stretch of railroad track embankment\u2026destroyed a railroad trestle and a nearby garage\u2026and washed away a vintage 1960\u2019s show car near east 58th Avenue and York Street. The car was found a couple of miles downstream in a pool of deep mud and murky water. Rainfall totaled 1.34 inches at Stapleton International Airport where 1\/2 inch diameter hail fell. The same thunderstorm produced a brief tornado in a vacant field near 64th Avenue and Tower Road just east of the Rocky Mountain Arsenal. No damage was reported from the twister. Lightning from the storm caused power outages to as many as 7 thousand homes and businesses.<\/p>\n

In 1996\u2026a tornado (f0) was reported 5 miles south of Hudson. No damage was reported. Twin weak tornadoes (f0) formed for a short time near the northeast runways at Denver International Airport. Less than 15 minutes later\u2026a weak tornado (f0) touched down in the employee parking lot at dia. Several car windows were blown out\u2026and a few vehicles sustained minor body damage from flying debris. Several signs were also blown down. Later\u2026twin weak tornadoes (f0) touched down again in open country between DIA and Watkins.<\/p>\n

In 2004\u2026severe thunderstorms produced hail to 3\/4 inch in diameter near tiny town and wind gusts to 66 mph in Bennett. A thunderstorm wind gust to 56 mph was measured at Denver International Airport.<\/p>\n

In 2005\u2026a thunderstorm produced a wind gust to 54 mph at Denver International Airport.<\/p>\n

9-10<\/p>\n

In 1980\u2026a series of severe thunderstorms hit metro Denver\u2026 Dumping heavy rain and producing a spectacular lightning display lasting for several hours. A number of homes were damaged by lightning. Winds gusted to 60 mph at Stapleton International Airport where about half an inch of rain fell in just 10 minutes along with 1\/4 inch diameter hail. The evening thunderstorms continued into the early morning hours with total rainfall of 1.35 inches at Stapleton International Airport.<\/p>\n

In 1998\u2026thunderstorm rainfall totaled 2.04 inches at the site of the former Stapleton International Airport.<\/p>\n

10<\/p>\n

In 1878\u2026a lunar rainbow was observed during a light mist and fog.<\/p>\n

In 1895\u2026the temperature warmed to a high of only 53 degrees\u2026 The all-time record lowest maximum temperature for the month of July.<\/p>\n

In 1967\u2026golf ball size hail damaged aircraft at Jefferson County airport near Broomfield.<\/p>\n

In 1983\u2026two people were injured when struck by lightning just southwest of Morrison. A man was injured when he was swept downstream by a flash flood on a tributary of Clear Creek in the canyon 8 miles west of Golden. Heavy thunderstorm rains caused mudslides which closed several roads. Rainfall amounts included: 1.75 inches in 20 minutes in southeast Denver\u20261.26 inches in 35 minutes in Boulder\u20262.14 inches in 2 hours in Lakewood\u20261.70 inches in 45 minutes in Aurora\u2026and 1.25 inches in 30 minutes atop Floyd Hill in the foothills west of Denver.<\/p>\n

In 1992\u2026storm spotters reported 3\/4 inch diameter hail near the construction site of the new Denver airport just northeast of the city.<\/p>\n

In 1995\u2026microburst winds toppled a pine tree 60 feet high and 2 feet in diameter in Denver. The tree fell and injured a man nearby. Microburst winds to 59 mph broke the glass on a door at the national weather service forecast office at the site of the former Stapleton International Airport.<\/p>\n

In 1998\u2026thunderstorm rainfall totaled 2.35 inches at Denver International Airport.<\/p>\n

In 2000\u2026three children were injured\u2026one critically\u2026when lightning hit a nearby tree at panorama point atop flagstaff mountain just west of Boulder. Lightning hit the tree\u2026entered the ground\u2026then struck the children. Lightning sparked a grassfire that burned about 50 acres at the rocky flats environmental test facility. Also\u2026 Lightning sparked at least 6 fires in the Hudson and Keenesburg areas as thunderstorms\u2026accompanied with heavy rain\u2026large hail\u2026and tornadoes\u2026moved through southern Weld County. Over 2 inches of very heavy rain caused flooding along an I-76 exit ramp near Keenesburg. The fire department rescued 15 stranded motorists as high water inundated sections of the exit ramp and adjacent highway. Basements were also flooded in Keenesburg. One home reportedly had 7 feet of standing water in the basement before the rain subsided. A weak tornado (f0) touched down briefly near Brighton\u2026but caused no damage.<\/p>\n

In 2001\u2026a severe thunderstorm dumped 7\/8 inch diameter hail in Wheat Ridge.<\/p>\n

In 2002\u2026severe thunderstorms pelted the southern suburbs of metro Denver with large hail. Hail as large as 3 inches in diameter fell 6 miles southeast of Parker. Other large hail reports included 2 inch diameter hail around Centennial Airport and 3\/4 inch hail near Sedalia and Deckers. Hail as large as 3\/4 inch was also reported in Broomfield. Runoff from heavy thunderstorm rainfall in the Hayman Fire burn area flooded lost creek ranch with up to 18 inches of water just off State Highway 126. Floodwaters damaged a very expensive rug in the lodge. A driveway to a residence was washed away. In Douglas County\u2026runoff damaged forest access roads in the turkey creek drainage.<\/p>\n

In 2011\u2026a severe thunderstorm produced intense microburst winds in southeast boulder county. A peak wind gust to 75 mph was recorded in superior with gust to 58 mph\u20262 miles south of Lafayette. At Denver International Airport\u2026a peak wind gust of 31 mph was recorded.<\/p>\n

11<\/p>\n

In 1872\u2026heavy rainfall started at 4:00 pm and continued into the night. The heavy rainfall damaged homes and buildings in all parts of the city. Rainfall totaled 1.64 inches.<\/p>\n

In 1888\u2026the temperature reached 100 degrees in downtown Denver.<\/p>\n

In 1954\u2026the high temperature climbed to 102 degrees at Stapleton Airport.<\/p>\n

In 1970\u2026a girl walking in a park in southeast Denver received eye and facial injuries when lightning struck nearby. Lightning also caused numerous power outages and heavy rainfall produced local flooding at several locations across metro Denver.<\/p>\n

In 1974\u2026large hail up to 1 1\/2 inches in diameter fell in Thornton.<\/p>\n

In 1990\u2026the worst hailstorm in American history in terms of dollar damage at the time battered metro Denver. Storm damage totaled 605 million dollars\u2026as it cut a 5-to 10-mile wide swath from just southeast of Estes Park to northeast of Colorado Springs. Hail as large as baseballs (2.75 inches) pounded metro Denver. Hardest hit areas were southeast Boulder County\u2026the Jefferson County Airport in Broomfield\u2026 Arvada\u2026east Wheat Ridge\u2026southwest and south-central Westminster\u2026west Thornton\u2026northwest\u2026west-central and downtown Denver\u2026northeast and east-central Lakewood\u2026just east of Littleton\u2026portions of Arapahoe County west of I-25\u2026 And northern and central Douglas County near Castle Rock and Franktown. Golf ball to baseball size hail severely damaged roofs on thousands of homes and buildings\u2026battered tens of thousands of automobiles\u2026windows\u2026signs\u2026street lights\u2026and traffic signals\u2026stripped paint\u2026awnings\u2026and trim from buildings\u2026punched holes in the roofs of two homes in Arvada\u2026knocked out power and telephone service to thousands of homes and businesses\u2026defoliated thousands of trees\u2026ripped up greens and fairways on a number of golf courses\u2026and severely damaged several aircraft tied down at Jefferson County airport. Hail the size of baseballs fell for several minutes in old town Arvada. Later\u2026golf ball size hail and heavy rain pummeled two northwest Denver amusement parks. Hardest hit was Elitch Gardens amusement park where 47 people were injured and received treatment for bumps\u2026cuts\u2026and bruises at local hospitals. Many of the injured were stranded on rides during the storm when power failed. Hail clogged storm sewers\u2026causing rain water to back up 3 to 6 feet deep on some roads and intersections in Arvada. Several basements were flooded. In some places hail was washed into drifts several feet deep. In addition\u2026 The storm spawned 2 small tornadoes. One touched down briefly in Lakewood near 6th Avenue and Kipling Blvd\u2026.but did no damage. In Castle Rock\u2026a tornado (f1) did heavy damage to some homes and vehicles in the Founders Village development near Ridge Road.<\/p>\n

In 2001\u2026lightning struck two homes in Thornton. Most of the damage was confined to the attics of both homes. Hail as large as 3\/4 inch in diameter fell in Keenesburg\u2026Longmont\u2026 And near Boulder.<\/p>\n

In 2015…a peak wind gust to 55 mph was measured from the northwest at Denver International Airport. A trace of rainfall was also observed.<\/p>\n

11-12<\/p>\n

In 1872\u2026heavy rain from 4:00 pm until 2:00 am caused much damage. Rainfall totaled 1.76 inches.<\/p>\n","protected":false},"excerpt":{"rendered":"

Our look back at this week in Denver weather history reminds us that severe weather can continue to strike, even during what is normally a relatively calm month. Lightning, hail and flooding are three continuous threats as we see during our look back at history this week. From the National Weather Service: 29-15 In 2000\u2026the … Continue reading July 5 to July 11: 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":[81,106,62,34,741],"_links":{"self":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/20790"}],"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=20790"}],"version-history":[{"count":1,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/20790\/revisions"}],"predecessor-version":[{"id":20791,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/posts\/20790\/revisions\/20791"}],"wp:attachment":[{"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/media?parent=20790"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/categories?post=20790"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thorntonweather.com\/blog\/wp-json\/wp\/v2\/tags?post=20790"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}