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Thornton’s weekend to feature well-above normal temps, some chances for storms

Friday, June 12th, 2020 5:07am MST

High pressure will be dominant during the three-day period leading to relatively stable conditions and unseasonably warm temps. We will see some minimal chances for thunderstorms and some breezy winds though.

For Friday, the day looks much like the last couple. Sunny skies will be above with a few clouds this afternoon. Highs will be in the low 90s. The evening brings a slight chance for a thunderstorm but gusty winds are about all that is expected from them. Tonight, skies will be mostly clear with overnight lows in the mid-50s.

Saturday offers more of the same but with a better chance for storms. Highs will be around the 90 degree mark under sunny skies. The afternoon will bring some scattered thunderstorm activity. Saturday night into Sunday morning, there will be a good bit of cloud cover and overnight lows will be around 60 degrees.

Sunday will see lots of sun again with highs in the low 90s. Winds will be a bit breezy for much of the day.

Have a great weekend!

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Thursday in Thornton to offer lots of sun, temps just a bit above normal

Thursday, June 11th, 2020 4:54am MST

Another fine looking day ahead for us. We will enjoy lots of sun above, calm conditions, and comfortable temperatures.

Sunny skies start us off and will be with us all morning. The late afternoon and evening will bring just a few clouds. Winds will be light, conditions calm throughout the day. High temperatures today will top out around 83 degrees, a couple of degrees above normal for the date.

Tonight, skies remain mostly clear with overnight lows in the mid-50s.

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June 7 to June 13: This week in Denver weather history

Wednesday, June 10th, 2020 6:06am MST

This Week in Denver Weather History

An extremely eventful week in weather history showing just how varied conditions can be.  We of course see typical spring weather like tornadoes and hail but also a touch of snow and this week also marks the anniversary of the start of the Hayman Fire.

1-30

In 2012…it was the hottest June in Denver since weather records began back in 1872. The average temperature for the month was 75.0 degrees which was 7.6 degrees above normal. There were a total of seventeen 90 degree days in the month of June. The highlight of record setting month was a stretch of five consecutive 100 degree days from the 22nd to the 26th. This was only the third time in Denver weather history in which this happened. Two of the high temperatures during the stretch peaked at 105 degrees… Which set the all-time record for the month of June and tied the all-time maximum temperature for Denver.

2-7

In 1921…heavy rainfall for nearly a week…on top of streams already swollen by mountain snowmelt…produced widespread flooding over the South Platte River basin…including the tributaries through the canyons to the west and southwest of Denver.  Heavy rainfall over the 6-day period totaled 3.36 inches in Boulder…4.98 inches in Morrison…4.27 inches in Castle Rock…and 2.94 inches in the city of Denver. Rainfall amounts in the foothills were estimated between 3 and 6 inches.  The narrow-gage tracks of the Colorado and southern railroad were destroyed in the Platte Canyon.  From the mouth of the canyon through the city to near Brighton… The river spread from 1/2 to nearly 1 1/2 miles wide… Flooding farm and pasture land and destroying or damaging many bridges.  In the city…many businesses along with as many as 500 homes were inundated…forcing their evacuation. Bridges were swept away.  The high waters flooded the rail yards and stock yards in lower downtown…closing three adjacent packing houses.  The heavy rains also caused flooding on Boulder creek in Boulder on the 6th.

6-7

In 2004…a brief hot spell produced 3 temperature records. High temperatures of 95 degrees on the 6th and 98 degrees on the 7th were record maximum temperatures for the dates. Low temperature of 68 degrees on the 7th was a record high minimum for the date.

In 2012…severe thunderstorms broke late in the evening… Striking areas hardest from Denver southward. Locations impacted by the storms included but were not limited to: Aurora…Castle Rock…Centennial…Highlands Ranch…Lone Tree… Parker and Surrey Ridge. The storms produced a barrage of large hail…damaging straight line winds… Flash flooding and several short lived tornadoes. The hail ranged in size from 1 to 2 inches in diameter…and caused extensive damage to homes and automobiles. The hail inundated the roadways with several inches of hail in Douglas County. Consequently… Snow plows had to be called out to clear the roadways. The combination of torrential hail and heavy rain produced flash flooding in parts of Elbert…Douglas and Arapahoe counties…as thunderstorms brought up to 3.35 inches of rain to some areas within 90 minutes. In Aurora…Picadilly Road was closed from flooding north of 6th Avenue. A water rescue took place on south Gun Club Road in Arapahoe County…where floodwaters were rushing to depth of 3 feet. Flash flooding forced the closure of several streets and roads from parker south to the Pinery…where the floodwaters inundated the roadway with up to 2 feet in several locations. At Centennial Airport…a historic B-17 Flying Fortress suffered extensive damage as hailstones as large as ping pong balls struck the aircraft. Although the airframe itself did not require repair…the fabric-covered ailerons and elevators were extensively damaged. The hail came straight down and punched holes in the fabric-covered control surfaces. The aircraft landed just hours before the storm hit to participate in a weekend tour stop. Lightning also struck two homes…one in Lakewood and the other in Parker. Straight line winds downed trees and power lines in aurora. As a result…scattered electrical outages affected around five thousand residents. At Denver International Airport… 0.61 inches rainfall was recorded along with a peak wind gust of 41 mph.

In 2007…an unusually strong storm system brought very strong winds to the Front Range foothills and urban corridor. Peak gusts included:  92 mph at Boulder…85 mph…2 miles southwest of Boulder…83 mph…10 miles south of Boulder and 55 mph at Denver International Airport.  High winds forced the closure of Mt. Evans Road and Trail Ridge Road.  Several trees were uprooted across the urban corridor.  In Aurora… The driver of a car was injured when some building material blew off the Fitzsimmons complex.  The debris landed on the car and knocked the driver unconcious.  The wind forced the cancellation of 60 flights at Denver International Airport. Xcel reported outages in Boulder…Denver…Lakewood and Longmont.

7

In 1904…a thunderstorm produced south winds to 40 mph with gusts to 50 mph…but only a trace of rain.

In 1942…heavy thunderstorm rainfall in south Denver caused flooding of shops…stalled motorists…and halted tramway service temporarily.  Lightning damaged houses…but there was no loss of life.  Precipitation totaled 0.53 inch in downtown Denver.

In 1951…a 24×65 foot roof of a cow barn was lifted off the building and blown to the ground by a “twister” near Fort Lupton.

In 1961…small hail and heavy rain damaged property and crops in southwest metro Denver…including the southwest section of the city…Lakewood…and Littleton.  Precipitation totaled 1.20 inch…11 miles southwest of Stapleton Airport. Complete primary and secondary rainbows were sighted by national weather service observers at Stapleton Airport.

In 1968…severe thunderstorms moving to the northeast through sections of Denver caused local flooding of streets and damage to trees and gardens from hail 1/2 to 1 3/4 inches in diameter.  One man was killed and 2 were injured at the Wellshire Golf Course when lightning struck a tree under which they had taken shelter.  At another golf course… A man was mortally injured by lightning.  Marble to golf ball size hail fell over downtown Denver.  Hail to 3/4 inch in diameter was measured in Westminster.

In 1975…hail up to 3/4 inch diameter fell in Boulder.

In 1978…a man standing under a tree on a golf course in Denver was struck in the arm by lightning.   Wind gusts to 60 mph and golf ball size hail pelted west and south Denver.

In 1986…7/8 inch hail was measured in Lafayette.

In 1990…a thin…rope-shaped tornado touched down east of the intersection of State Highway 2 and 96th avenue just north of the rocky mountain arsenal.  No damage was reported.

In 1992…a thunderstorm wind gust to 60 mph was recorded in Boulder.  A funnel cloud was sighted by a highway patrol officer just northwest of Stapleton International Airport where thunderstorm winds gusted to 51 mph.  Spotters and state patrol officers reported funnel clouds in the northwestern part of metro Denver…near Golden…and 7 miles northwest of Stapleton International Airport.

In 1993…non-convective high winds pummeled the Front Range foothills during the late morning and afternoon.  Speeds of 60 to 80 mph were common.  The winds caused several power outages as well as uprooting trees.  In Lafayette…a 4-year- old boy was slightly injured while standing on the roots of a large tree which was toppled by the winds.  The boy fell 10 feet to the ground and was bruised and scraped.  A tree fell onto a parked car in Boulder…causing about 35 hundred dollars in damage.  West wind gusts to 41 mph were recorded at Stapleton International Airport where a thunderstorm produced 1/8 inch hail at daybreak.

In 1995…severe thunderstorms produced large hail across west and north metro Denver from Golden to Westminster and Fort Lupton.  Hail ranged in size from 3/4 to 2 inches in diameter.  The largest hail fell in Fort Lupton.  A weak tornado produced a brief dust and debris cloud in a corn field 3 miles northeast of Hudson.

In 1997…two plumbers were injured…one critically…when lightning struck a pipe on which they were working in an apartment building under construction in Denver.  The bolt apparently hit one man in the hand…passed through his chest…and struck the other worker.  The critically injured man…died a few days later.  Lightning also injured a man…while he was talking on a telephone in ward.  The bolt passed through the phone line burning his ear.

In 2001…hail as large as 7/8 inch in diameter fell in Westminster.

In 2012…severe thunderstorms brought damaging wind and hail…heavy rain and flash flooding. The storms produced hail from 1.5 to 2.5 inches in diameter. In addition to the large hail…heavy rain from 1 to 2 inches also accompanied the storms. The combination of hail and heavy rain caused extensive street flooding across Aurora…Castle Rock…Centennial…Cherry Creek… Englewood…south Denver…Highlands Ranch… Lakewood and Littleton. The hail was reportedly “knee deep” in several areas making roads impassable. As a result… Snow plows had to be summoned to clear the streets. In Castle Rock…a King Soopers supermarket sustained extensive damage when roof partially collapsed under the weight of the hail. At Denver International Airport…0.61 inches of rainfall was again recorded along with a peak wind gust of 40 mph. Total property damage estimates along the Front Range for the 6th and 7th combined was 321.1 million dollars.

In 2016…large hail up to 1 inch in diameter was observed in Castle Rock.

7-9

In 1979…rain…at times with thunder on the 7th…fell almost continuously through the morning of the 9th.  Rainfall totaled 2.28 inches at Stapleton International Airport over the 3 days.  High temperature of only 49 degrees on the 8th was a record low maximum for the date.

» Click here to read the rest of June 7 to June 13: This week in Denver weather history

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Warmer temperatures return Wednesday along with lots of sun, calm conditions

Wednesday, June 10th, 2020 5:25am MST

A very nice late spring day in store for Thornton. We will enjoy sunny skies, pleasant conditions and temps right near normal.

Sunny skies start us off and while there might be a few clouds in the PM, they won’t amount to much. High temperatures today will top out right near the 80 mark.

Tonight, skies will be mostly clear with lows in the low 50s.

Enjoy!

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Rain to come to an end Tuesday morning but temps remain cool and conditions windy

Tuesday, June 9th, 2020 4:59am MST

Quite the change up in our weather, eh? Coupled with the overnight wind, Thornton received much-needed rain on the order of about a half inch. The rain will be ending this morning and temperatures will remain cool but most notable is the wind that will continue.

The day starts off with cloudy skies and light to moderate rainfall. The rain will start to taper off by about 7:00am ending entirely by 11:00am.

Clouds will start to break up around mid to late morning leading to mostly sunny skies this afternoon. Highs today will only reach the mid to upper 60s.

As for the wind, a strong pressure gradient will remain in place and that is going to lead to windy conditions throughout the day. Gusts to 40mph will be possible throughout.

This evening, winds will finally begin to ease and be calm by midnight. It will be mostly clear tonight with overnight lows in the mid-40s.

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Monday brings cooler daytime temperatures, overnight wind and rain

Monday, June 8th, 2020 5:04am MST

A bit of a mixed bag of weather for Thornton today. The day starts out nice enough and will bring a much-needed break from the heat. Later today though, a strong front will be pushing through bringing another round of wind and some rain.

The day starts out with sunny skies and then we will see a few clouds this afternoon. High temperatures today will top out in the upper 70s, coming close to the average high for the date of 80 degrees.

A cold front is working its way toward us and will begin to make itself felt this afternoon. This will initially take the form of breezy winds this afternoon that will be increasing in the evening.

As the front pushes through, gusts to 50mph will be possible overnight. As such, a High Wind Warning has been issued for the period from 6:00pm this evening to 3:00am tomorrow morning. Along with the wind, we will see some scattered rain shower activity after 5:00pm and lasting through the overnight hours.

Tonight, in addition to the aforementioned wind, mostly cloudy skies will be above with overnight lows in the mid-40s.

Keep an eye on those wind speeds with our live weather gauges here.

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Unseasonably warm temps, some chances for storms for Thornton’s weekend

Friday, June 5th, 2020 4:56am MST

There will be no appreciable break from the heat for us this weekend. Mercury readings are going to remain well above normal although one day does bring a decent chance for a thunderstorm.

For Friday, the day looks much like the past couple. We will have sunny skies for much of the day then see increased clouds in the PM. Highs will again push toward the mid-90s. There will be some scattered PM thunderstorm activity although for us wind looks to be the most notable feature. Tonight, mostly cloudy skies will be above with lows in the low 60s.

Saturday will be the “coolest” day of the three day period although still warmer than normal. Look for highs around 90 degrees. Partly sunny skies will be above as a weak system makes itself felt. The afternoon brings isolated thunderstorms that may, finally, provide a bit of moisture. Saturday night, winds will be breezy, skies mostly clear and lows will drop to the mid-50s.

Sunday sees the temperatures rebound with highs back into the mid-90s. It will be sunny and breezy winds will be with us for much of the day.

Have a great weekend!

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Thornton’s Thursday brings another day with unseasonably warm temps, just a slight chance for storms

Thursday, June 4th, 2020 4:54am MST

Not a lot of change in our weather for today versus what recent days have brought. Temperatures will again be well above normal and a few thunderstorms may threaten in the afternoon.

Sunny skies start us off and then we will see a few more clouds as the day progresses. High temperatures will once again be in the low to mid-90s, well above the average high for the date of 78 degrees.

Scattered thunderstorms will develop after 3:00pm and continue until about sunset. Unfortunately, most of these will bring little more than some gusty winds.

Tonight, skies will clear and overnight lows will dip to the upper 50s.

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Thornton’s June weather preview: Temperatures climb, severe weather chances increase

Wednesday, June 3rd, 2020 3:45pm MST

Thornton's June weather preview.Extreme weather can occur during in month in Colorado we well know.  June however is when traditional spring severe weather arrives in the state oftentimes with hail, damaging wind and tornadoes.

Over 40 percent of the tornadoes that occur in Colorado happen during the month of June.  Far more common are thunderstorms with hail and wind, each responsible for extensive damage each year.

While severe weather is common, so too are brilliantly sunny and mild days as we close out spring and enter summer.  If you are looking for cold, it isn’t likely but it is possible as the Denver area has seen freezing temperatures and yes, even snow, during the month.

Read more about Thornton and Denver’s June weather and a look ahead at this year.

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May 31 to June 6: This week in Denver weather history

Tuesday, June 2nd, 2020 6:47am MST

This Week in Denver Weather History

An extremely eventful week in Denver weather history.  Most notably for longtime Thornton and Northglenn residents is the 28 year anniversary of the infamous Thornton Tornado which struck on June 3, 1981.

From the National Weather Service:

26-31

In 1995…a cool period with light morning showers and moderate to heavy afternoon showers and thunderstorms pushed rivers already swollen from mountain snow melt over their banks causing minor flooding.  Streams and rivers such as the South Platte and Boulder Creek flooded meadowlands…bike paths…roads near streams…and other low lying areas.  No significant property damage was reported and crop damage was unknown.  Rainfall totaled 1.79 inches at the site of the former Stapleton International Airport and only 1.51 inches at Denver International Airport.

29-1

In 1894…heavy rain combined with snowmelt runoff caused widespread flooding over the South Platte River basin. Rainfall was heaviest in the foothills where 5 to 8 inches were measured over the 4 days.  Heavy rainfall west of Boulder flooded mining towns and damaged mining properties.  In the canyons above Boulder…railroads and roads were washed out along with many bridges.  The floodwaters spread into central Boulder and covered a wide area from University Hill north to near Mapleton Hill to a maximum depth of 8 feet.  Many houses were swept away…and every bridge in Boulder was destroyed. A few people…trapped in their homes by the floodwaters… Had to be rescued.  However…the gradual rise of the flood waters resulted in only one death.  Boulder Creek spread to a width of nearly one mile in the pasture land to the east of Boulder.  Extensive flooding on Left Hand Creek north of Boulder washed away railroad and wagon bridges.  The heavy cloudbursts caused flooding on Bear Creek…which washed away bridges…railroad tracks…and structures and destroyed the canyon roadway.  Morrison sustained the heaviest flood damage on bear creek.  In Denver…rainfall totaled only 1.50 inches on the 30th and 31st…but the heavy rainfall on upstream tributaries of the South Platte River caused the river to rise as much as 10 feet above the low water mark in the city…which caused some flooding of pasture land downstream to a depth of 6 feet near Brighton.

30-31

In 1935…heavy thunderstorm rains overnight caused flash flooding east of the city on both Kiowa and Bijou Creeks… Resulting in a total of 9 deaths.  Most of the damage was on Kiowa Creek where there were more structures.  The water rose rapidly during the storm…ripping houses and stores from their foundations and sweeping them downstream. Precipitation in Denver totaled only 0.01 inch.  Hail fell in the city for a short time.  The hail was very small and caused no damage.

In 1983…a late storm of rain and snow hit the Front Range. Over an inch of rain fell at some spots…and above 7 thousand feet…1 to 5 inches of snow whitened the ground. Some snow flakes even fell in the western suburbs of metro Denver on the night of the 30th.

In 2002…unseasonably warm weather at the end of the month resulted in 3 temperature records.  High temperature of 91 degrees on the 30th equaled the record maximum for the date.  Low temperature of 61 degrees on the 31st was a record high minimum for the date.  High temperature of 93 degrees on the 31st was a record maximum for the date.

31

In 1917…rainfall totaled 0.55 inch and was mixed briefly with snow around midday.  Only a trace of snow fell. Cold temperatures during the day resulted in a high of 44 degrees and a low of 35 degrees.  The month closed as the coldest May on record with a mean temperature of only 48.7 degrees…about 8 degrees below normal.  The cold temperatures during the month had a marked effect on shade trees and shrubs in the city.  Elms were just starting to leaf.  Leaves on cottonwoods and maples were only half formed.  Lilacs were just blooming…and snowball clusters would not bloom for days.

In 1959…the public reported a tornado briefly touching the ground 10 miles south of Stapleton Airport.  No damage was reported.

In 1984…a thunderstorm microburst produced a wind gust to 67 mph…7 miles east of Boulder.

In 1991…hail to golf ball size pummeled southern and southeastern sections of metro Denver and continued on east to Watkins.  Several houses and cars were damaged.  Later… Thunderstorms dumped heavy rain across the city of Denver… Causing street flooding in an area just south of downtown and just northwest of downtown.  Water was up to 10 inches deep over northwest Denver.  A brief tornado touched down in Castle Rock where 3/4 inch diameter hail also fell.

In 1993…thunderstorms dropped dime size hail in Commerce City.

In 1994…lightning struck an apartment in Louisville and damaged electronic equipment…including a computer.

In 2006…a severe thunderstorm produced 1 inch diameter hail near Boulder.

1

In 1875…a windstorm during the late afternoon and early evening produced sustained winds to 50 mph.

In 1898…south winds were sustained to 41 mph with gusts to 46 mph.

In 1917…a trace of unmelted snow fell in downtown Denver. Precipitation for the day totaled 0.08 inch…half of which was estimated to be from melted snow.

In 1919…snowfall of 0.4 inch was measured in downtown Denver.  This was the greatest calendar day and 24-hour snowfall ever recorded during the month of June. Precipitation (rain and melted snow) totaled 0.15 inch. Two temperature records were set.  The low temperature of 32 degrees was a record minimum for the date.  The high temperature of only 40 degrees was a record low maximum for the date and the month.  North winds were sustained to 36 mph with gusts to 40 mph.

In 1951…a trace of snow fell at Stapleton Airport.

In 1961…hail as large as 1 1/2 inches in diameter fell in west Denver with hail to 1 1/4 inches reported in derby.

In 1965…a man struck by lightning in southeast Denver died shortly after being admitted to a hospital.  Lightning damaged power lines in east and southeast Denver.

In 1980…strong thunderstorm winds blew in the windows of a mobile home in Northglenn.

In 1990…a thunderstorm produced wind gusts to 63 mph in Boulder.  A small tornado touched down in a farmer’s field between the towns of Louisville and Lafayette.  Another tornado was spotted in an open field 3 miles west of Brighton.  A funnel cloud was sighted near Hudson. A microburst wind gust to 55 mph was recorded at Stapleton International Airport.  No damage was reported from any of these events.

In 1991…severe thunderstorms producing large hail…damaging winds…funnel clouds…and heavy rain were widespread across metro Denver.  Funnel clouds were reported in Lakewood… Boulder…Arvada…and just east of the rocky mountain arsenal.  Hail up to golf ball size fell in Lakewood…just west of Sedalia…in Littleton…Arvada…Englewood…and the city of Denver.  A mobile home park in Jefferson County reported hail to 3 feet deep.  Up to 1.00 inch of rain fell in 45 minutes near Boulder…causing Boulder Creek to flow out of its banks.  Rock and mud slides forced the closure of many roads in Boulder County.  Later in the afternoon thunderstorms produced rainfall amounts of 2 to 3 inches over a couple of hours.  Clear Creek in Golden spilled over onto U.S. Highway 6.  Heavy rains washed away part of a bridge near Erie.  Water was up to 18 inches deep in Westminster.  Wind gusts to 58 mph were reported at Stapleton International Airport where 1/4 inch hail fell… And heavy thunderstorm rainfall totaled 0.82 inches…briefly reducing the visibility to 1 1/4 miles.  Estimates of total damage from these storms would exceed 7 million dollars.

In 1994…hail up to 1 inch in diameter fell over south Denver and Littleton.

In 1997…two short lived-tornadoes formed near Bennett…but did no reported damage.

In 2002…strong winds from the outflow of dissipating showers developed to the east of Denver.  Near Strasburg…a spotter recorded a wind gust to 58 mph.

1-2

In 2002…unusually very warm weather for so early in June resulted in two temperature records.  Maximum temperatures of 96 degrees on the 1st and 93 degrees on the 2nd were record highs for each date…respectively.

1-4

In 1977…unusually warm weather for this early in June resulted in 3 maximum temperature records being equaled at the time:  88 degrees on the 1st…90 degrees on the 2nd… And 93 degrees on the 4th.  Maximum of 91 degrees on the 3rd was not a record.

1-30

In 2012…it was the hottest June in Denver since weather records began back in 1872. The average temperature for the month was 75.0 degrees which was 7.6 degrees above normal. There were a total of seventeen 90 degree days in the month of June. The highlight of record setting month was a stretch of five consecutive 100 degree days from the 22nd to the 26th. This was only the third time in Denver weather history in which this happened. Two of the high temperatures during the stretch peaked at 105 degrees… Which set the all-time record for the month of June and tied the all-time maximum temperature for Denver.

2

In 1914…flooding occurred on Boulder creek when heavy rains added to heavy snowmelt runoff.  Flooding damaged the water supply system from the mountains into Boulder and destroyed roads and bridges in the canyons above Boulder.  The flooding in central Boulder was described as the worst since the tragic flood of May 29th through June 3rd in 1894.  However…there was no reported loss of life.  The flood waters also inundated pasture land to the east of the town.

In 1951…the lowest recorded temperature in June…30 degrees… Occurred. The unusually cold weather was accompanied by 0.3 inch of snowfall.  Precipitation…both rain and melted snow…totaled 0.30 inch.

In 1966…microburst winds gusted to 51 mph at Stapleton International Airport.

In 1981…a severe thunderstorm roared through metro Denver… Dumping 2.00 inches of rain in as little as 20 minutes and bombing many areas with hail to 1 3/4 inches in diameter. The heavy rain caused local flooding with up to 3 feet of water in some streets in northwest metro Denver.  Part of a street was washed out in Thornton.  Lightning strikes started a fire and caused a power outage just north of Denver.  Lightning also struck a barn which burned to the ground in Brighton.  Numerous cars sustained minor hail damage.  A tornado was spotted 4 miles northeast of the rocky mountain arsenal…but caused no damage.

In 1982…severe thunderstorms produced large hail across metro Denver.  Hail to 3/4 inch in diameter was reported in Louisville and northeast Denver.  Golf ball size hail fell near Strasburg where two tornadoes were also sighted.

In 1983…a tornado touched down 5 miles south of Bennett.  It destroyed an outbuilding and did extensive damage to greyhound dog shelters.  Golf ball size hail fell near the tornado…destroying some hay.

In 1985…3/4 inch hail fell in southwest metro Denver.

In 1989…large hail fell over eastern and central Denver.  A few stones were as large as baseballs…and many ranged from 3/4 inch to golf ball size.  The hail piled up 2 to 4 inches deep in some areas.  Hail to 3/4 inch fell at Buckley Field in Aurora…and 7/8 inch hail fell just east of Aurora.  A home in Louisville was struck by lightning and was 30 percent destroyed by the ensuing fire.

In 1991…strong thunderstorm winds in Arapahoe County…14 miles southeast of Stapleton International Airport…damaged the roof of a home and a radio antenna.  A funnel cloud… 4 miles northeast of Stapleton International Airport…was sighted for 11 minutes by national weather service observers.

In 1993…a tornado touched down briefly in south Denver… Destroying the 4-inch thick concrete roof of a building and causing about 20 thousand dollars in damage.  The twister also picked up a trash dumpster and dropped it onto a car 30 feet away…causing an estimated 3 thousand dollars in damage.  Hail up to an inch in diameter fell in Aurora… Conifer…and Bennett.  Two funnel clouds were spotted near Deckers.  A funnel cloud was sighted for 19 minutes by national weather service observers to the southwest of Stapleton International Airport.

In 1994…lightning struck two homes in Denver…starting fires which caused considerable damage to both.  Hail to 3/4 inch in diameter fell in Golden.

In 1995…lightning struck a house in Nederland…causing a fire that was doused by subsequent rainfall.  A portion of the roof and wall was damaged.  The storm also left most of Nederland without power for two hours.  Lightning also struck a high chimney of an elementary school in west Denver.  The jolt sprayed bricks around the school yard and parking lot.  Twenty students and teachers were in the school building at the time…but all escaped without injury.  A funnel cloud was sighted over Fort Lupton…and 3/4 inch hail fell in Lafayette.

In 2003…severe thunderstorms produced strong winds and large hail.  Hail as large as 1 1/2 inches in diameter fell near Parker.  Estimated wind gusts to 70 mph occurred near Parker and near Denver International Airport where thunderstorm wind gusts to 52 mph were recorded.  Wind gusts to 60 mph were estimated near Bennett.

In 2005…a severe thunderstorm produced hail as large as 1 inch in diameter in the city of Denver.  A tornado was sighted near Bennett along with 3/4 inch hail.

In 2008…severe thunderstorms produced large hail over western Arapahoe…northern Denver and southern Weld counties.  Hail…2 inches in diameter…was observed near Brighton; with hail to 1 1/2 inches in diameter…5 miles east of prospect.  Hail to one inch in diameter was observed near Buckley Field…Frederick and Denver.

In 2012…severe thunderstorm produced damaging thunderstorm winds.  Peak wind gusts included:  82 mph near Strasburg… 61 mph at Buckley Field…60 mph near byers and southwest Denver…58 mph near Watkins and 52 mph at Denver International Airport.  The microburst winds caused extensive tree and roof damage.  In addition…hail up to 1 inch in diameter was reported 3 miles east-southeast of Parker.

2-4

In 1989…heavy rain drenched metro Denver with the greatest amounts recorded on the 3rd.  Total rainfall ranged from 1 1/2 to 3 inches.  Roads were washed out in Boulder County… And flooded basements caused water damage to houses in the Gunbarrel section of Boulder.  In suburban Denver…heavy rain caused minor flooding along Lena Gulch in Jefferson County where two mobile home parks were evacuated. Rainfall totaled 1.66 inches at Stapleton International Airport.

» Click here to read the rest of May 31 to June 6: This week in Denver weather history

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