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June 20 to June 26: This week in Denver weather history

Sunday, June 20th, 2021 4:56am MDT

This Week in Denver Weather History

Late June weather is usually relatively calm but when it turns severe, it can do so in spades.  Hail, flooding rains, tornadoes and more are not unusual.  This week in Denver weather history we see plenty of each of those including a hail storm in 1993 that damaged dozens of planes at Denver International Airport.


In 1875…smoke from several large forest fires in the mountains was visible from the city on each of these days.


In 1888…northwest winds were sustained to 44 mph.

In 1956…a microburst caused a brief wind gust to 58 mph at Stapleton Airport.

In 1964…hail up to 1 inch in diameter was reported 1 mile north of Stapleton International Airport.  A 3 minute hail storm at both Stapleton International Airport and Lowry Field piled small hail to one half inch deep.

In 1967…a strong thunderstorm dumped 1.95 inches of rain in less than an hour at Stapleton International Airport and produced a wind gust to 54 mph.  The storm caused some flooding in east Denver and Aurora.  There was widespread flooding to streets…basements…and store buildings and automobiles.  Hail stones to 3/4 inch in diameter were measured at Buckley Field in Aurora.  A tornado touched down just south of Littleton…damaging a barn and killing several head of cattle.

In 1985…a wind gust to 61 mph was reported at Golden Gate Canyon in the foothills west of Denver.

In 1986…a man was killed by lightning at Highlands Ranch south of Denver.

In 1987…several tornadoes were sighted across metro Denver.  A tornado touched down briefly 5 miles west of Parker.  A tornado was sighted just north of Chatfield Reservoir.  A tornado just northwest of Watkins was on the ground for 15 minutes.  A tornado near Barr Lake was taped by a television news crew.  It had a double vortex and was on the ground for about 10 minutes.  In addition to the 4 tornadoes…severe thunderstorms dumped large hail across metro Denver.  One inch hail was reported in southeast Aurora; 3/4 inch hail fell at the Denver technology center…Buckley Field…and Franktown.

In 1992…several short-lived tornadoes occurred in the vicinity of Barr Lake.  No injuries or damages were reported.  A water spout was sighted over the southern end of Barr Lake.  Funnel clouds were also sighted on the grounds of the rocky mountain arsenal by national weather service observers at Stapleton International Airport.

In 1994…hail up to dime size covered I-25 south of Denver and near Sedalia.  Heavy rain caused local flooding on the interstate highway.

In 1996…strong thunderstorm winds downed several large tree limbs in Boulder on the University of Colorado campus.  A stop light in the city was also blown down.

In 1999…lightning sparked an oil tank fire near Brighton.

In 2001…large hail driven by strong thunderstorm winds raked Denver international and Front Range airports.  Wind gusting to 54 mph along with hail as large 2 inches in diameter punched at least 14 thousand holes and cracks in the flat roofs of several buildings at Denver International Airport. In addition…93 planes and hundreds of cars were damaged. About 100 flights had to be cancelled…stranding 1500 travelers.  The airport was completely shut down for about 20 minutes.  The storm also damaged a ground avoidance radar used to track planes on the ground to prevent collisions. Damage was estimated at 10 million dollars…not counting the damage to the 93 airliners.  The storm moved south and struck Watkins with hail as large as 2 1/2 inches in diameter and winds gusting to 60 mph.  A least 30 private planes at Front Range airport were destroyed.  The radome protecting the national weather service doppler radar…which was tracking the storm…also sustained damage.  The large hail…damaging winds…and heavy rain pummeled a mobile home park near Watkins.  In the park…52 mobile homes…14 recreational vehicles…3 homes…and a commercial building were damaged.  Siding was riddled with holes and windows were broken.  Vehicles sustained extensive damage and car windows were shattered.  A handful of people were treated for minor cuts and bruises.  The strong winds also flipped a tractor trailer along I-70 near Watkins.  The storm caused power outages…which affected about 1200 residents. Excluding the damage at Denver International Airport…damage estimates totaled 49 million dollars…making the storm the costliest in the last 3 years and the 10th costliest since 1984.  A small tornado touched down just east of Brighton… But did no damage.  Hail as large as 2 inches in diameter fell near Fort Lupton with 3/4 inch hail measured in Bennett.  Precipitation from the storm totaled only 0.23 inch at Denver International Airport.

In 2002…heavy rain fell near the Hayman Wildfire burn area. Flash flooding washed out a 40-foot section of the access road to Cheeseman Reservoir.  Some debris was washed against a gate…blocking the road.  Hail to 1 1/2 inches in diameter fell near central city with 3/4 inch hail near Blackhawk.

In 2003…hail as large as 1 inch in diameter fell near Bennett and Strasburg with 3/4 inch hail measured in Denver…Golden… At Centennial Airport…and near Parker.  Hail as large as 7/8 inch was reported in Arvada.

In 2004…a severe thunderstorm produced hail to 3/4 inch in diameter in and near Brighton.

In 2005…severe thunderstorms produced large hail near the palmer divide.  Hail to 1 inch in diameter was measured near Larkspur with 7/8 inch hail near Sedalia and 3/4 inch hail in Greenland.  An apparent thunderstorm outflow produced a wind gust to 59 mph at Denver International Airport during the evening hours.

In 2010…lightning struck a home in Centennial and sparked a fire which caused extensive damage.


In 1897…high winds raked the city overnight.  Southeast winds were sustained to 60 mph with gusts as high as 72 mph on the 20th.  Southeast winds were sustained to 57 mph with gusts to 60 mph on the 21st.

In 2007…a brief hot spell produced two temperature records. The high temperature of 97 degrees was tied on the 20th. A new record high temperature of 99 degrees was established on the 21st.


In 1927…north winds were sustained to 40 mph with gusts to 44 mph.

In 1984…lightning struck and killed two children standing near a tree in a backyard in Lakewood.  Strong thunderstorm downbursts caused a wind gust to 58 mph in Northglenn and knocked down two power poles near Brighton.

In 1988…lightning struck a home in Denver…causing about ten thousand dollars damage.  Lightning damaged 3 homes in Littleton…and also hit a house in greenwood village that had been struck by lightning 7 years previously.

In 1991…thunderstorms produced widespread hail across metro Denver.  Hail as large as 2 1/2 inches fell at several locations across southwest metro Denver.  One storm spotter reported hail 8 inches deep near the intersection of I-25 and c-470.  Heavy rain with the storms caused some street flooding.  In Commerce City…several cars were under water… And in Westminster a police officer reported water up to the doors of his car.  Damage to homes and automobiles totaled 55 million dollars.

In 1992…a tornado touched down briefly near Bennett. Another tornado was briefly on the ground near Strasburg.

In 1994…heavy thunderstorm rains caused flooding in metro Denver.  Several vehicles were stalled in the high water on I-25.  Lightning struck an underground natural gas line in Aurora…causing a fire.  Widespread power outages were also observed.

In 1996…three homes were struck by lightning in Parker. The lightning struck the garage of the first home…which started a small fire that burned some siding and spread into the attic.  A second home sustained damage to the attic when a small fire was started.  The third home received only minor damage.  Lightning also sparked two small grass fires in the area.  A man in Lakewood received minor injuries when he was struck by lightning while working on a ladder.  A funnel cloud was sighted in Castle Rock.  Strong thunderstorm winds downed a large tree near crossroads mall in Boulder.  A small tornado (f0) briefly touched down near Lafayette.  No damage was reported.

In 1997…one inch diameter hail was measured in Boulder.

In 2002…a thunderstorm wind gust to 62 mph was recorded at Denver International Airport.

In 2005…severe thunderstorms produced hail to 1 inch in diameter in Broomfield along with 3/4 inch hail near Arvada.

In 2006…a man riding a motorcycle was struck and killed by lightning on U.S. Highway 36 between church ranch blvd. And Sheridan Blvd. In Westminster.  After the biker was struck…he and his motorcycle crashed into the center concrete median of the highway.  The lightning bolt left a crater in the highway asphalt that measured 18 inches long…8 inches wide and 4 inches deep.

In 2010…a severe thunderstorm produced hail up to 1 1/2 inches in diameter near Morrison. In Lafayette and Louisville…hail up to one inch in diameter was observed.

In 2014…three small tornadoes touched down in eastern Adams County near Barr Lake…Bennett and Front Range Airport. The tornado near Barr Lake damaged some out buildings and a storage shed. Minor roof damage to houses in the immediate area was reported near 168th Ave and Haymont Rd near 168th Ave and Haymont Rd. It was rated an EF1. The others did no damage.


In 1941…strong thunderstorms produced cloudbursts of rain in Boulder County…starting during the late evening of the 21st and continuing overnight.  The heavy rains over the Boulder Creek…Left Hand Creek…and south St Vrain River basins produced flooding in already swollen streams and turned dry gulches into raging torrents.  The force of the floodwaters swept a man from the arms of his wife to his death…severely damaged canyon homes and swept others away… And hurtled a car down a steep embankment after the driver narrowly escaped.  West of Boulder…the Boulder canyon highway was littered with rocks and debris and collapsed when two culverts were washed away.  The flood waters washed much debris down four mile canyon…damaging the road near the creek bed.  A bridge over Dry Creek just south of Niwot was completely washed away.

In 1964…scattered hail and rain caused property damage and local flooding in Boulder.

In 1989…an unseasonably cold weather system produced strong winds over much of metro Denver and snowfall in the foothills as low as 7500 feet elevation.  One to 6 inches of snow fell in the foothills west of Denver with 15 inches reported on the summit of Mount Evans.  Six inches of snow were measured at conifer.  Rainfall totaled only 0.09 inch at Stapleton International Airport where northwest winds gusted to 29 mph on the 21st.


In 2002…the maximum temperature in Denver equaled or exceeded 90 degrees for 13 consecutive days…equaling the 5th longest such streak on record.  The record of 18 consecutive days was set during the summer of 1901.


In 1872…small sandstorms…frequently seen on the prairie… Occasionally passed through the city.

In 1983…3/4 inch hail was observed at Deckers…and a thunderstorm produced wind gusts to 55 mph at Littleton.

In 1988…a tornado was spotted one mile east of Brighton; it remained on the ground for about 6 minutes…but did no reportable damage.  Lightning damaged a home near Castle Rock.

In 1991…thunderstorms produced golf ball size hail in Lafayette.  The strongest storms occurred north of metro Denver.

In 1992…nickel size hail was reported just east of Parker.

In 1995…large hail 3/4 to 1 3/4 inches in diameter fell in Castle Rock where a funnel cloud was sighted.  Hail 3/4 inch to 1 inch in diameter fell in south Denver and Aurora. A funnel cloud was also sighted over Chatfield Reservoir. In Bennett…very strong dry microburst winds of unknown speeds ripped a 14- by 48-foot metal roof off of a barn. The roof was tossed approximately 250 yards.  A few 150- pound railroad ties were moved 10 to 15 feet.

In 1997…a tornado touched down near the Adams County Fairgrounds northeast of Denver…uprooting several trees and damaging a car.  A dry microburst produced a brief wind gust to 69 mph at Jefferson County Airport. A small brief tornado was sighted near Hudson…but did no reported damage.

In 1998…3/4 inch hail fell near Hudson.

In 1999…thunderstorm winds gusted to 63 mph at Denver International Airport.

In 2003…hail as large as 2 inches in diameter was measured in Fort Lupton with 3/4 inch hail in Erie and near Boulder.

In 2006…a small tornado (f0) touched down near Franktown… But caused no damage.

In 2008…strong winds from dry microbursts developed over parts of southern Weld and western Arapahoe counties. A peak gust of 60 mph was observed in Centennial. Near Frederick…strong winds snapped 3 power poles and sparked a small grassfire near State Highway 52 and interstate 25.  At Denver International Airport…a peak gust of 31 mph was observed.

In 2009…hail up to 2 inches in diameter was observed near crescent in Boulder County.


In 2012…from the 22nd to the 26th…the maximum temperature exceeded 100 degrees for five consecutive days. Two of the high temperatures on the 25th and 26th peaked at 105 degrees…which set the all time record for the month of June and tied the all-time maximum temperature for Denver.


In 1874…a thunderstorm pelted the city with hail and brief heavy rain.  Rainfall was 0.30 inch in 10 minutes.  Total rainfall was 0.36 inch for the day.  Hail to 1/4 inch in diameter destroyed the strawberry fields near the limits of the city.  The thunderstorm dropped the temperature from 93 degrees to 80 degrees in 5 minutes.

In 1887…north winds were sustained to 42 mph.

In 1954…the temperature climbed to a high of 102 degrees… Setting a record for the date.

In 1962…lightning struck and injured a man near buffalo… Southwest of Denver…while he was riding in the back of a pick-up truck.  He suffered multiple bruises…cuts…and shock.

In 1965…an apparent tornado was reported 18 miles east of Denver.  No damage was reported.

In 1975…hail up to 3/4 inch in diameter fell at Stapleton International Airport and over other parts of metro Denver. Four funnel clouds were sighted:  10 miles northeast of Denver…south of Boulder…southeast of Boulder…and south of Aurora.

In 1976…heavy rain and eroding water collapsed a retaining wall in Thornton.

In 1981…a thunderstorm produced wind gusts to 60 mph in Littleton.

In 1982…two separate bolts of lightning injured three men in southwest Denver.  Two buildings were slightly damaged.

In 1987…severe thunderstorms produced large hail across metro Denver.  Golf ball size hail fell in Littleton…near Morrison…and in southeast Aurora with 1 1/2 inch hail recorded in south Lakewood and 1 inch hail reported in Littleton…Arvada…and at Cherry Creek Dam.  Two funnel clouds were sighted 20 miles southwest of Stapleton International Airport.

In 1993…non-convective high winds developed along the Front Range foothills.  Wind gusts to 70 mph were common near the foothills with numerous tree limbs broken by the winds. North winds gusting to 36 mph were recorded at Stapleton International Airport.

In 1999…hail as large as 1 inch in diameter was measured in the city of Denver with 3/4 inch hail in Littleton.

In 2001…a severe thunderstorm produced large hail in south metro Denver.  Hail as large as 1 1/2 inch in diameter fell in Littleton with 1 1/4 inch hail near Sheridan.

In 2009…hail up to 1 inch in diameter was observed near Parker.  At Denver International Airport…a total of 1.64 inches was measured in a 24-hr period…setting a new record for the date.

In 2014…severe thunderstorms produced large hail near Commerce City and Fort Lupton. The hail sizes ranged from 1 to 1 1/2 inches in diameter.

In 2016…a severe thunderstorm produced a peak wind gust to 60 mph near Strasburg.


In 1873…there was a great deal of smoke from a fire in the mountains to the southwest of the city during the late afternoon.

In 1875…smoke from forest fires in the mountains to the southwest could plainly be seen from the city.

In 1958…a strong cold front produced a north wind gust to 55 mph at Stapleton Airport where blowing dust briefly reduced the visibility to 1 mile.

In 1982…one inch diameter hail pelted west Denver.  A half inch of rain drenched the suburb of Englewood in 10 minutes. Hail piled up to 5 inches deep…snarling rush hour traffic and damaging some stores in a shopping center when the roof started leaking.

In 1988…lightning destroyed the chimney of a house near Evergreen.  Another bolt demolished a radio transmitter in the area.

In 1989…golf ball size hail cut a swath 2 1/2 miles wide through open country 14 miles southwest of Bennett.  The storm also dropped 1.75 inches of rain on the area.  Hail to 3/4 inch in diameter damaged the car of a storm chaser just south of Bennett.

In 1996…a funnel cloud was sighted near Hudson where hail up to 1 3/4 inch diameter fell.  Lightning struck a home in Littleton…which sparked a small fire on the roof. Thunderstorm wind gusts to 64 mph were recorded in Castle Rock.

In 2005…severe thunderstorms produced large hail across metro Denver.  Hail as large as 1 inch in diameter fell near Castle Rock and Thornton.  Hail to 3/4 inch was measured near Northglenn and Fort Lupton.

In 2006…severe thunderstorms raked metro Denver.  Hail as large as 2 1/2 inches in diameter shattered automobile windshields in and near Boulder.  Hail to 1 3/4 inches pounded areas in and near Lakewood and Morrison.  Hail to 1 inch was measured in Wheat Ridge along with 7/8 inch hail in Arvada.  Severe thunderstorm wind gusts estimated to 69 mph snapped power lines for a distance of one quarter mile near Castle Rock.  Severe thunderstorm winds were measured to 60 mph in Sedalia.  Hail as large as 1 inch in diameter fell near Evergreen and Castle Rock.  Hail to 3/4 inch in diameter was reported in Louviers and near Conifer.

In 2014…damaging hail…from 1 to 2 inches in diameter… caused extensive damage to homes and automobiles over parts of Arapahoe and Douglas Counties including areas in and near: Aurora-Cherry Creek…Buckley Air Force Base…Denver International Airport and Parker. Officially…0.06 inches of rain fell at Denver International Airport…with a peak wind gust of 33 mph from the southeast.

In 2015…two colliding outflow boundaries merged over east Denver and northwest Aurora at the height of rush hour. The collision quickly spawned a severe thunderstorm that produced an EF1 tornado…damaging hail…torrential rain and flash flooding. The tornado touched down in east Denver and west Aurora. The tornado first touched down near Quebec and 6th Avenue. It then moved east northeast across the Lowry Campus into the west part of Aurora. The tornado then lifted near Mount Nebo Memorial Park. Some homes had minor roof damage with one former apartment building on the Lowry Campus had more significant roof damage. The tornado and intense thunderstorm winds uprooted trees…damaging vehicles and blocking roads. The storm produced torrential rain…2 to 2.5 inches…much of which fell in less than 30 minutes and resulted in flooded intersections and power outages. Flash flooding forced the evacuation of a theater at the Cherry Creek Shopping Center…where drifts of hail formed in the parking lot…and flooding set off alarms at the University of Denver`s Ritchie Center. Numerous water rescues were reported as vehicles stalled flooded intersections. Many stoplights were knocked out. The water was reportedly 3 feet deep on the South Broadway ramp to Interstate 25. The bike path along Cherry Creek was inundated with several feet of water at the height of the storm. Ironically…it was “Bike to Work Day”…which made for a long commute home for many. The South Platte River crested above flood stage for one hour. Employees still at work were urged to stay inside but others waded across flooded intersections downtown. About 30 flights had to be diverted from Denver International Airport. At Denver International Airport… only 0.05 inches of rain fell. A peak wind gust to 47 mph was observed from the southeast.


In 1873…forest fires produced a great deal of smoke in the mountains to the southwest of the city.

In 1958…an unusually cold day for summer set two temperature records for the date.  Under cloudy skies with occasional drizzle…a record low maximum temperature of 55 degrees was established along with a record minimum temperature of 42 degrees.

In 1959…a waitress…working at a kitchen sink…was injured by a bolt of lightning…which struck the rear of a tavern in Denver.  She was hospitalized.

In 1971…a tornado touched down briefly at a high school football field in Brighton…but caused no damage.

In 1981…3/4 inch hail pelted Wheat Ridge and hail to 1 1/4 inches fell in Louisville.  A brief funnel cloud was sighted by national weather service personnel 4 miles east of Stapleton International Airport.

In 1982…a bolt of lightning struck a cabin in the foothills west of Denver.  The resulting fire totally destroyed the cabin.

In 1987…golf ball size hail fell near Bennett.

In 1988…a tornado touched down 1 mile south of Watkins and was on the ground for 4 minutes.  Another tornado was spotted just southeast of Barr Lake and was on the ground for 5 minutes.  No damage was reported from either tornado. Lightning struck two rock climbers near Eldorado Springs. A 25-year-old man was killed…and a 21-year-old man suffered extensive injuries.  Thunderstorm winds knocked over two elm trees near downtown Denver.  One fell on a house destroying most of it.  A nearby building was unroofed…and two cars were damaged.  A truck that had been severely damaged by one of the Denver tornadoes 10 days before was hit again.  Thunderstorm wind gusts to 51 mph were recorded at Stapleton International Airport.

In 1991…the temperature reached a high of 100 degrees… Setting a new record for the date.

In 1997…one inch diameter hail fell in Arvada and 1 1/2 inch hail in Boulder.  Hail as large as 3/4 inches fell in Denver…Louisville…Westminster…and near Broomfield.

In 1999…thunderstorm winds gusted to 58 mph near Fort Lupton toppling an oil rig.  A 37-year-old man was killed when he fell 55 feet from the derrick of the rig.

In 2001…four golfers and one construction worker received minor injuries from a nearby lightning strike on the Broadlands Golf Course in Broomfield.

In 2002…hail to 1 inch in diameter was measured in greenwood village.

In 2005…hail to 3/4 inch in diameter fell near Bennett and Roggen.  A thunderstorm wind gust to 61 mph was recorded near Golden.

In 2009…lightning struck the Darlington Prismatic Electric Fountain in City Park’s lake.  The damage was estimated to be approximately $25000.

In 2010…wind gusts associated with a dry microburst downed several trees in the vicinity of 14th and Federal…and near Bayaud St. and Clarkson St. in Denver. At Denver International Airport…a peak wind gust to 45 mph was observed from the southwest.

In 2015…severe thunderstorms developed late in the afternoon and continued in the late evening hours. The storms moved over parts of Adams…Arapahoe…Douglas and Weld Counties. The largest hail occurred near Aurora and Keenseburg…with hail up to tennis ball size or 2 1/2 inches in diameter. Elsewhere… the hail size ranged from nickel to half dollar size. At Denver International Airport…just a trace of rainfall was observed. A peak wind gust of 31 mph was also observed from the east.


In 1969…high winds raked Boulder causing one fatality and some injuries.  One man was injured by a falling tree limb. At the National Center for Atmospheric Research in Boulder… Sustained winds of 55 to 60 mph with wind gusts to 123 mph were recorded.  In downtown Boulder…winds averaged 30 to 40 mph with gusts to 70 mph.  Widespread minor damage occurred… Especially in the Table Mesa area of south Boulder.  Much tree damage occurred in the older areas of Boulder where several trees were uprooted.  A mobile home was overturned by the winds.  At Stapleton Airport…west winds gusted to 43 mph on the 25th and 37 mph on the 26th.

In 1975…strong winds damaged utility lines…buildings… Vehicles…trees…and power lines in Boulder and other communities to the north of Boulder.  Microburst winds gusted to 45 mph at Stapleton International Airport on the 25th.

In 1983…heavy rain fell in the foothills west of Denver with 1.50 inches in 30 minutes at Intercanyon.  Heavy rain continued over metro Denver on the 26th with two-day storm totals at many locations ranging from 1.00 to 2.50 inches.  Rainfall totaled 1.37 inches at Stapleton International Airport on the 26th.

In 1985…one to two inches of rain fell over metro Denver. At Stapleton International Airport…rainfall totaled 0.93 inches…thunderstorm winds gusted to 44 mph…and 7/10 inch hail was measured.  The air mass was unusually cold for the season…and snow fell in the foothills above 8 thousand feet.  The high temperature of only 63 degrees on the 26th equaled the record low maximum reading for the date.

In 2012…Denver broke the all-time record temperature for the month of June on the 25th when it reached 105 degrees. This also tied the all-time record maximum temperature in Denver. The maximum temperature of 105 degrees was then matched once more on the 26th. Sandwiched in between these records…the minimum temperature of 71 on the morning of the 26th… established a new record high minimum for the date.


In 1873…there was a great deal of smoke from a large forest fire in the mountains to the southwest of the city and a smaller fire directly to the west.

In 1874…fires at timberline to the west were visible from the city.  New and extensive fires were continually started from south to northwest along the ridge line.  Carelessness of tourists was the apparent cause of the fires.  Large and valuable tracts of timber had already been destroyed.

In 1890…the only thunderstorm of the month produced a trace of rain.  A trace of rain also fell on 7 other days.  This was the only precipitation recorded during the month… Making it the driest June on record.

In 1893…northwest winds were sustained to 45 mph with gusts to 48 mph.

In 1971…a microburst wind gust to 58 mph was recorded at Stapleton International Airport.  Dust devils were sighted.

In 1980…strong gusty thunderstorm winds damaged several mobile homes in Thornton.  Thunderstorm winds gusted to 37 mph at Stapleton International Airport.

In 1986…hail piled up 1 1/2 inches deep in Golden Gate Canyon and covered roadways an inch deep in Evergreen.

In 1988…a tornado touched down 2 miles north of Watkins. It was on the ground for 15 minutes and did no reported damage.

In 1989…two inch diameter hail fell at Kassler…1 inch hail at Louviers…and 1 1/2 inch hail at tiny town.

In 1991…high winds…not associated with thunderstorms… Damaged a home in the Green Mountain area.  The strong winds picked up a heavy metal and glass table on the deck of a house and threw it into the house.  The table was destroyed and the house received considerable damage.

In 1992…3/4 inch diameter hail fell in south Aurora and near Buckley Air National Guard base.  Golf ball size hail was reported in Parker.

In 1994…the all-time highest recorded temperature in June and the second highest temperature ever recorded in Denver… 104 degrees occurred.  This was the hottest day in Denver since August 8…1878…when the temperature reached 105 degrees.

In 2005…strong thunderstorm winds gusting to 58 mph damaged a garage and some nearby trees near Fort Lupton.  Winds also gusted to 58 mph near Watkins.  Thunderstorm winds gusted to 60 mph near Roggen.  Hail to 3/4 inch in diameter was measured in southwest Aurora.

In 2009…severe thunderstorms moving through Denver and the surrounding metro area produced intense thunderstorm winds. At Denver International Airport…a wind gust blew a luggage car into a southwest airlines airplane causing some damage.  Peak wind gusts included:  68 mph at Denver International Airport…4 miles west of rocky mountain metropolitan airport and 12.5 miles north of Lowry AFB; 64 mph near Arvada and Parker; and 60 mph in Aurora/cherry.

In 2014…a severe thunderstorm produced a peak wind gust to 58 mph…9 miles northeast of Denver International Airport. Offically…a peak wind gust to 54 mph was measured from the northeast with just a trace of rainfall.


In 1965…wind gusts to 38 mph were recorded in downtown Boulder…causing widespread minor damage.  A microburst wind gust to 41 mph was recorded at Stapleton International Airport.

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