Public Information Statement
Issued by NWS Denver/Boulder, CO

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NOUS45 KBOU 290045

Public Information Statement
National Weather Service Denver/Boulder CO
645 PM MDT SAT MAY 28 2016

...This week in metro Denver weather history...

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 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    In 1934...the low temperature dipped to only 66 degrees...the
        all-time record highest minimum temperature for the month
        of May.
      In 1958...a microburst caused a brief wind gust to 56 mph at
        Stapleton Airport.
      In 1964...heavy rain caused flooding in the Harvey Gulch
        area of southeast Denver.  The high water damaged homes...
        businesses...streets...and bridges.  At Stapleton
        International Airport...1.33 inches of rain were measured
        with 1.76 inches total rainfall on the 29th and 30th.  The
        heavy rain during the last week of the month was the first
        significant precipitation since April 3rd.
      In 1967...3/4 to 1 inch diameter hail stones fell in the City
        of Denver...but caused no reported damage.  Hail as large as
        3/4 inch was measured at Stapleton International Airport.
      In 1975...the heaviest last snowfall of the season occurred
        when 5.6 inches of snow were measured at Stapleton
        International Airport.  Rain all day on the 28th changed
        to snow on the 29th and accumulated to a depth of 4 inches
        on the ground.  Northwest winds gusted to 31 mph.
        Precipitation (rain and melted snow) on the 28th and 29th
        totaled 1.48 inches.
      In man was killed and two others injured by a
        lightning strike as they stood under a tree in the City of
        Denver`s Washington Park.
      In 1987...7/8 inch diameter hail fell near Castle Rock.
      In 1990...thunderstorms over metro Denver produced several
        small funnel clouds and two small tornadoes.  The first
        tornado (F0) touched down in northwest Denver and caused
        roof damage to a house and snapped off the tops of several
        trees.  A second tornado (F1) touched down in Northglenn
        and moved into Thornton damaging a group of self storage
        garages...several vehicles...a wooden fence...several trees...
        and the roof of an auto parts store.  No injuries were
        reported.  The storms also caused minor street flooding
        across northern and western sections of metro Denver.
        Rainfall totals ranged from 1 to 3 inches.  Lightning
        started a small fire at a home in northwest Denver.  The
        fire was confined to the front rooms and was quickly
        extinguished.  Snow plows were used to clear 2 to 4 inches
        of pea to marble size hail from a stretch of U.S. Highway
        285 in Turkey Creek Canyon.  Lightning felled a tree in
        northeast Denver...while strong winds snapped off several
        large tree limbs in the same area.  Thunderstorm rainfall
        totaled 0.82 inch at Stapleton International Airport
        where southwest winds gusted to 30 mph.
      In 1991...lightning struck a 13 year old boy in a field in
        Fort Lupton.  The boy was in critical condition in an area
        hospital for 2 days before recovering.
      In 1995...lightning struck a soccer goal post and injured
        6 adults viewing a soccer game in Arvada.  Although no
        one received a direct hit from the lightning...all escaped
        with only minor injuries...except one woman who was
      In 1996...large hail...3/4 to 1 1/2 inches in diameter...
        struck Lakewood and west Denver.  Lightning sparked a
        small fire when it struck an oil storage tank 5 miles
        west of Brighton.
      In 2001...lightning sparked a fire in an apartment complex in
        Aurora...forcing the evacuation of 24 units.  Most of the
        fire damage was confined to the attic.  Damage was
        estimated at 100 thousand dollars.
      In 2004...a man and his son were struck by lightning while
        practicing on the driving range at the Meadows Golf Club
        in southwest metro Denver.  The father was killed by the
        bolt...and his 16 year old son seriously injured.  Three
        other people standing nearby received only minor injuries.
      In 2010...hail up to 7/8 inch in diameter was reported in
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    In 1875...a windstorm lasting almost all day produced
        sustained winds to 42 mph.
      In 1935...southeast winds sustained to 29 mph with gusts to
        34 mph produced a moderate duststorm during the afternoon.
      In 1938...heavy thunderstorm rain and hail pummeled downtown
        Denver during the evening hours.  Rainfall accumulated to
        1.63 inches.  Hail accumulated to a depth of 18 inches.
      In 1948...a localized thunderstorm caused flooding on Sand
        Creek in Aurora and northeast Denver.  Rainfall was only
        0.49 inch in downtown Denver where light hail also fell.
      In 1963...a golfer died of injuries received when struck
        by lightning on a golf course southwest of Denver.  A
        warehouse in Denver was damaged and its contents destroyed
        by a lightning-caused fire.
      In 1967...up to 4.00 inches of rain in Lakewood and Wheat
        Ridge caused flooding of roads and basements.  Water was
        several feet deep in some yards.  Many streets were
        temporarily closed.  Hail as large as 1 inch in diameter
        fell in Wheat Ridge.  Hail piled up to 2 feet deep in some
        low lying areas of east and southeast Denver.  Snowplows
        were employed to remove the hail.  Stapleton International
        Airport...where west winds gusted to 39 mph...received 1.51
        inches of rain and hail...which forced the closure of the
        runways for an hour.  Hail stones to 3/4 inch in diameter
        were measured at Buckley Field.  A funnel cloud was sighted
        near south Wadsworth Blvd. and Bear Creek.  A tornado
        touched down briefly in the vicinity of 60th and 62nd
        Avenues near north Washington Street.  The storm uprooted
        trees and damaged one building.  Doors were ripped from a
        business house...widely scattering irrigation pipe.  In
        addition...a total of 3 funnel clouds were sighted in that
      In 1970...hail up to 1 inch in diameter fell at Stapleton
        International Airport.
      In 1976...a single thunderstorm crossed south metro Denver
        producing a funnel cloud 2 miles south of Arapahoe Road
        and Broadway.  The storm moved over Buckley Field producing
        a funnel cloud and 1/2 inch diameter hail.  As the storm
        moved northeast of the city...a large tornado touched down
        near East 59th Ave and Tower Road and was on the ground for
        20 minutes.  It demolished a 60-foot-long cinderblock cow
        shed...tore a wall from a machinery shed...tore shingles off
        the roof of a farmhouse nearby...and felled 12 trees on one
        farm.  A boy in a feed shed 20 feet from a destroyed
        building was not injured.
      In 1977...3/4 to 1 inch diameter hail fell at or near
        Stapleton International Airport.  One inch to baseball
        size hail fell in south Denver...damaging some homes and
        extensively damaging some airplanes at Arapahoe County Centennial Airport.  Hail covered highways
        to a depth of 6 to 8 inches in south Denver.
      In 1978...two funnel clouds were sighted 5 miles south of
        Stapleton International Airport.  Hail up to 1 1/4 inches in
        diameter was reported in Wheat Ridge and northwest Denver.
        Only 1/2 inch diameter hail fell at Stapleton International
      In ball size hail fell at the junction of I-25 and
        I-225.  One inch diameter hail fell in Littleton.
      In 1990...a line of severe thunderstorms crossed metro Denver...
        producing wind gusts to 60 mph and scattered areas of
        pea to marble size hail.  Small trees and branches were
        blown down by the strong thunderstorm winds...which also
        caused minor power outages across southern and eastern
        sections of metro Denver.  The strong winds uprooted a 25-
        to 30-foot tree in the Acres Green subdivision of northern
        Douglas County.  The tree blocked a busy street for several
        hours.  A pilot reported hail as large as 1 1/2 inches in
        diameter covering the ground near the north end of a runway
        at Stapleton International Airport.  Heavy rain caused a
        rock and mud slide that partially closed the Boulder Canyon
        highway 10 miles west of Boulder.  Thunderstorm winds gusted
        to 41 mph at Stapleton International Airport.
      In 2001...lightning ignited a fire which destroyed a luxury
        home on Bear Mountain near Evergreen.  Estimated damage
        was set at 1 million dollars.
      In 2003...flash flooding occurred in the Hayman Fire burn area
        after as much as 1 inch of rain fell in 30 minutes.  The
        heavy rainfall washed out many access roads and closed State
        Highway 67 between Deckers and West Creek.  A 3-foot wall of
        water ran down Fourmile Creek from the YMCA Camp at Shady
        Brook...damaging one building in the camp and flooding roads.
        Hail as large as 3/4 inch in diameter fell near Roggen in
        Weld County.
      In 2005...lightning struck as least 20 homes in Westminster.
        Only minor damage was reported.  Severe thunderstorms
        produced hail as large as 1.25 inches in and near Fort
        Lupton and hail to 3/4 inch near Indian Hills in Jefferson
      In 2014...heavy rainfall...nearly 1.2 inches in 30 minutes...
        produced localized street flooding in Boulder. The heavy
        rain coupled with the already swollen creeks from the spring
        runoff along Boulder Creek resulted in the flooding. Street
        flooding was reported at 6th St and Canyon Blvd and at
        Baseline Road. Some cars were stranded in the high water in
        low lying areas and one person reported being trapped in his
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
      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
      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 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 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
      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
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
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.
3     In 1951...a trace of snow fell at Stapleton Airport.
      In 1961...torrential rains fell 10 to 30 miles north of
        Denver...causing flooding in the town of Frederick.  The
        rush of water broke through and over a retaining dike
        sending a 5-foot wall of water into the town...flooding
        homes and damaging sewer lines...roads...and streets.
        Golf ball size hail fell in Derby...west Denver...and
        Lakewood...causing more than one million dollars in damage.
      In 1981...severe thunderstorms produced tornadoes over metro
        Denver.  The first tornado touched down at the intersection
        of Alameda Ave. and Sheridan Blvd.  The twister moved north
        along Sheridan Blvd....damaging businesses...apartment vehicles.  Over ten homes were
        unroofed.  The roof of one landed in the middle of a
        neighborhood park.  At least 10 mobile homes were wrecked.
        The tornado curved to the northeast into northwest Denver...
        hopping up and down in several places.  Very strong winds
        outside the actual funnel caused 20 to 30 thousand dollars
        in damage in downtown Denver.  The third floor of one old
        building was demolished.  No major injuries were reported
        from the tornado...although several people were hurt
        slightly in traffic accidents on Sheridan Blvd. in the
        confusion caused by the storm.  Damage in Lakewood alone
        was estimated at 200 thousand dollars.  At the same time...
        the worst tornado to ever hit metro Denver struck Thornton.
        Coming from the same thunderstorm that spawned the Denver
        twister...the Thornton tornado tore a swath through the
        heart of the city.  87 homes were destroyed...110 others
        damaged at least moderately.  In all...600 homes in a 100
        block area sustained some damage.  The twister also hit
        shopping centers...several restaurants...and other buildings.
        Seven of the 42 injured were considered serious.  The storm
        was strong enough to snap lamp posts in half and drive a 6-
        inch slab of wood 2 feet into the ground.  Damage was
        estimated at up to 50 million dollars.  The same storm that
        struck Thornton produced another damaging tornado that
        touched down in the northwest section of Fort Lupton.  This
        twister damaged 16 homes and numerous cars and campers.
        Two children were slightly injured when the car they were
        in was knocked about and its windows shattered by the
        storm.  The twister also damaged two commercial
        buildings.  Damage was very spotty...and observers said
        the storm hopped up and down at least 3 times.  Dollar
        damage was estimated at 500 thousand dollars.  The
        thunderstorm complex that produced 3 damaging tornadoes
        also dropped large hail which damaged many cars over
        northwest Denver.  One to 2 inches of rain fell in less
        than an hour...flooding a mobile home park with 3 to 4 feet
        of water on the northwest edge of Denver.  The high water
        damaged about half of the 392 homes in the park.  Local
        flooding was also reported in other areas across metro
        Denver.  A tornado was also sighted near Franktown...but
        caused no damage.  A thunderstorm wind gust to 52 mph was
        recorded at Stapleton International Airport.
      In 1982...a cold air funnel cloud touched down briefly in
        southwest Denver.  Two tornadoes were briefly spotted near
        Watkins.  No damage was reported from these storms.  A
        brief funnel cloud was sighted by National Weather Service
        observers at Stapleton International Airport where 1/4 inch
        hail fell.
      In 1984...there were several sightings of tornadoes around
        Parker.  No damage was reported.
      In 1985...a tornado just southeast of Aurora was spotted by a
        National Weather Service employee.  No damage was reported.
        Severe thunderstorms pummeled the metro area with hail.
        One inch to baseball size hail was reported in south inch hail in Littleton...3/4 inch to 1 inch
        hail in Aurora...and golf ball size hail in south Denver.
      In 1989...hail up to golf ball size fell over Arvada.  A golf
        course had to be evacuated as the hail accumulated up to 3
        inches deep in some places.  One inch diameter hail fell in
        west Denver and Westminster.
      In early morning thunderstorm produced lightning...
        which caused an attic fire at a residence in Niwot
        northeast of Boulder.  Damage was estimated at 40 thousand
        dollars.  No one was injured.
      In 1994...hail to 1 1/2 inch diameter fell just northeast of
        Boulder.  One inch diameter hail fell in Golden.
        Thunderstorm wind gusts to 70 mph were recorded in Erie.
      In 1995...a tornado was sighted over open country near
        Strasburg.  No damage was reported.  A funnel cloud was
        sighted 11 miles east of Aurora where 3/4 inch hail fell.
      In 2001...severe thunderstorms produced large hail over east
        and southeast metro Denver.  Hail as large as 1 3/4 inches
        in diameter fell at Centennial Airport with 1 1/2 inch
        hail near Buckley Field...1 1/4 inch hail in Parker...1 inch
        hail near Elizabeth...7/8 inch hail at Cherry Creek
        Reservoir...and 3/4 inch hail 20 miles north of Kiowa in
        Elbert County.
      In 2002...severe thunderstorms dumped large hail across metro
        Denver.  Hail to 1 3/4 inches in diameter fell over
        southeast Denver and 4 miles north of Aurora.  Hail to
        1 1/4 inches pelted Parker.  One inch hail was measured
        near Ft. Lupton...and 3/4 inch hail fell 9 miles southeast
        of Buckley Field...near Strasburg...and at the site of the
        former Stapleton International Airport.
      In 2005...thunderstorms producing heavy rain and hail caused
        flash flooding over parts of southeast metro Denver.
        People became trapped in their vehicles by the high water...
        and numerous water rescues were required.  The hardest hit
        areas included the vicinity of I-25 and Alameda
        well as the intersection of Yale Avenue and Quebec Street.
        Several basements were flooded along Eastman Place.
        Severe thunderstorms brought heavy rain and hail to
        eastern Centennial and southeastern Aurora.  Up to 3 feet
        of standing water was reported on east Orchard Road where
        several motorists were stranded in their vehicles and needed
        to be rescued.  Hail to 3/4 inch in diameter fell in the
        area.  Ten vehicles were stranded on Grand Avenue...and most
        had to be towed once the floodwaters receded.  Water was
        reportedly chest deep at one location on Girard Avenue.
        Hail as large as 3/4 inch in diameter also was reported in
        Littleton...near Parker...and near Buckley Air Force Base.
        Hail to 7/8 inch was measured near Sheridan and Cherry
        Creek Reservoir.
3-4   In 1904...a thunderstorm during the early morning of the
        3rd turned into widespread general rain...which continued
        into the early afternoon of the 4th.  Rainfall totaled
        2.04 inches.
4     In 1878...a "waterspout" or cloudburst of rain was sighted
        up the South Platte Canyon at around noon.  The resulting
        high waters on the South Platte River slightly damaged a
        railroad bridge in the city.
      In 1937...a trace of snow fell in downtown Denver where
        rainfall totaled 0.25 inch.  Minimum temperature of 34
        degrees was a record low for the date.  Northeast winds
        were sustained to 22 mph.
      In 1951...the start of the second shortest snow-free period
        on record...109 days...occurred with the last snow of the
        season...a trace...on the 3rd.  The first snow of the next
        season occurred on September 21st when 4.2 inches of snow
        fell at Stapleton Airport.
      In 1954...a microburst produced brief sustained winds of 40
        mph with gusts as high as 64 mph at Stapleton Airport.
      In 1956...the failure of the Georgetown Dam caused downstream
        flooding on Clear Creek at Idaho Springs and Golden.
      In 1976...funnel clouds were sighted near Brighton...Erie...and
        Dacono...all north of Denver.  A tornado touched down briefly
        1 1/2 miles east of Lafayette.  Another tornado touched down
        briefly at Hyland Hills Golf Course in Westminster.  No
        damage was reported.
      In 1983...severe thunderstorms during the afternoon produced
        3/4 inch hail in south ball size hail 5 miles
        west of Parker...1 1/4 inch hail in Littleton...1 1/2 inch
        hail in south Aurora.
      In 2001...hail as large as 1 inch in diameter fell 17 miles
        north of Bennett in Adams County.
      In 2005...snow was mixed with rain for nearly an hour at
        Denver International Airport during mid to late morning.
        The temperature at the time was 45 degrees.  Precipitation
        totaled 0.36 inch for the day.  Northwest winds gusted
        to 37 mph.
      In 2008...a severe thunderstorm produced large hail...up to
        1 3/4 inches in diameter in Arvada...a northwest suburb of
        Denver.  Several vehicles were damaged.  In addition...a
        severe thunderstorms produced hail to 1 inch in diameter...
        10 miles northeast of Manila...east of Denver International
4-5   In 1965...lightning and an 18-hour rain storm damaged streets
        and roads and telephone and power lines across metro
        Denver.  Precipitation totaled 2.77 inches at Stapleton
        International Airport where the visibility was reduced to
        3 miles at times from pre-frontal thunderstorms and heavy
        upslope rains.
      In 1998...a late season snow storm struck the Front Range
        foothills.  Up to 5 inches of snow fell in Coal Creek
        Canyon.  Light snow also fell over western sections of
        metro Denver and briefly at Denver International Airport.
        Snow covered the grass at the Denver Federal Center in
        Lakewood before melting around mid-morning on the 5th.
        No snow fell at the site of the former Stapleton
        International Airport.  Several temperature records
        were set.  High temperatures of 47 degrees on the 4th
        and 49 degrees on the 5th were record low maximums for
        their respective dates.  Minimum temperature of 34 degrees
        on both the 5th and 6th were record lows for those dates.

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