Public Information Statement
Issued by NWS Denver/Boulder, CO

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NOUS45 KBOU 250045

Public Information Statement
National Weather Service Denver/Boulder CO
645 PM MDT SAT JUN 24 2017

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

22-26 In 2012...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.
25    In 1873...forest fires produced a great deal of smoke in the
        mountains to the southwest of the city.
      In 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
      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
      In 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 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
      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.
25-26 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 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.
26    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
      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
      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
      In 2014...a severe thunderstorm produced a peak wind gust to
        58 mph approximately 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
26-27 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
27    In 1873...Pikes Peak was hidden from view by smoke from forest
        fires in the mountains to the southwest of the city.
      In 1927...the temperature cooled to a low of only 72 degrees...
        the all-time record high minimum for the month.
      In 1980...lightning injured 4 people on a baseball diamond in
        Broomfield.  The bolt seriously injured the pitcher while
        also striking (out) the batter...catcher and second baseman.
      In 1987...a microburst wind gust to 53 mph was recorded at
        Stapleton International Airport.
      In 1990...the temperature reached a high of 102 degrees...
        setting a new record maximum for the date.
      In 1993...thunderstorm winds gusted to 60 mph across parts of
        metro Denver.  A wind gust to 50 mph blew over a 30-foot
        canvas tent at an amusement park southeast of Denver.
        Fifteen people...mostly children...were injured.  Microburst
        wind gusts to 33 mph were recorded at Stapleton
        International Airport.
      In 2002...heavy rain...up to 3/4 inch...fell across sections of
        the Hayman burn area near Cheeseman Reservoir.  Several
        forest service roads were washed out and many culverts were
        plugged by debris.
      In 2004...heavy rain producing thunderstorms caused rock and
        mud slides across the Overland Fire burn area in Jamestown.
        An estimated 50 tons of sand...dirt...rock...and ash slid into
        town...filling a culvert under Main Street.  The slide covered
        150 to 225 feet of Main Street.  The flood was produced by
        half an inch of rain in 30 minutes.  A deluge of very heavy
        rainfall from nearly stationary thunderstorms caused flooding
        and flash flooding problems over parts of Jefferson and
        Douglas counties.  An automated rain gage in Golden measured
        3.60 inches of rainfall in one hour.  Numerous homes were
        flooded in Golden...including one that was 146 years old.
        The home was listed as a complete loss.  State Highway 93
        had to be closed from the Pine Ridge subdivision to the
        Golden Gate Canyon Road.   At the height of the storm...about
        4 feet of water covered State Highway 93 through Golden...
        forcing its temporary closure.  Several intersections were
        also flooded and impassable.  Rock and mud slides were
        reported in Golden Gate Canyon State Park.  At the Deer
        Creek Golf Course at Colorado 470 and Kipling...the greens
        were completely inundated by floodwaters.  Some backyards
        near the golf course were partially washed out.  In Douglas
        County...water up to a foot deep covered the roadways in
        Roxborough State Park.  The Waterton Canyon Road also had to
        be closed due to high water.
      In 2010...a severe thunderstorm produced hail up to 1 inch
        in diameter near Strasburg.  Hail up to 3/4 inch in diameter
        was reported in Aurora and Buckley Air Field.
      In 2014...a severe thunderstorm produced hail...up to 1 inch
        in diameter...near Ft. Lupton.
28    In 1873...there was a great deal of smoke over the city from
        forest fires in the mountains.
      In 1875...smoke from forest fires in the foothills south of
        Denver were visible from the city.
      In apparent dry microburst produced southwest winds
        sustained to 44 mph with gusts to 48 mph in the city.
      In 1925...a thunderstorm produced north winds sustained to
        38 mph with gusts to 44 mph.
      In 1958...a microburst caused a brief wind gust to 58 mph at
        Stapleton Airport.
      In 1964...lightning struck several homes in metro Denver...
        sparking fires.  Some flooding occurred in the Stockyards West 45th Avenue and St. Paul Street...and along
        Harvard Gulch.
      In 1997...strong microburst winds of unknown speed downed
        several trees...signs...and at least one light pole in the
        Fort Lupton area.  Two trees knocked over by the storm
        downed power lines causing scattered outages.
      In 2002...a thunderstorm wind gust to 60 mph was recorded in
      In 2005...severe thunderstorms produced wind gusts to 66 mph
        near Longmont and to 60 mph near Niwot.  No damage was
        reported.  A thunderstorm produced a wind gust to 55 mph
        at Denver International Airport during the afternoon.
29    In 1874...eight different fires in mountain forests were
        visible from the city.  All of the fires were extensive...
        and the volume of smoke from each was immense.  Three of
        these fires had been burning from the 18th with varied
      In apparent dry microburst produced sustained winds
        to 45 mph.
      In 1960...a strong gust of wind blew a small foreign sedan off
        the highway near Brighton...injuring the driver.  East winds
        gusted to 40 mph at Stapleton Airport.
      In 1961...thunderstorm winds estimated as high as 40 to 50 mph
        occurred over southeast Denver.  No significant damage was
      In 1962...heavy rain and small hail caused some flooding in
        southwest Denver.
      In 1995...upslope cloudiness with rain and fog cooled
        temperatures to record levels.  Low temperature of 47
        degrees equaled the record for the date.  High temperature
        of only 54 degrees set a new record low maximum for the
        date.  Rainfall totaled 0.90 inch at Denver International
        Airport and 0.41 inch at the site of the former Stapleton
        International Airport.
      In 2003...a severe thunderstorm in Parker produced hail to
        1 inch in diameter.
      In 2011...two airmen from the Colorado National Guard
        suffered minor injuries when they were struck by lightning.
        They were hit while on duty at a flight line at Buckley
        Air Force Base.  At Denver International Airport...a
        microburst produced a peak wind gust to 72 mph.
29-2  In 1990...almost a year to date after the record breaking heat
        in early July 1989...the third longest heat wave in Denver
        history started.  From June 29th through July 2nd the
        temperature reached 100 degrees or more on four consecutive
        days.  The highest reading of 102 degrees occurred on the
        29th...30th...and 1st.  Combined with the 102 degree reading
        on June 27th this would have been the longest heat wave on
        record...but the temperature climbed to only 98 degrees on
        June 28th.
29-15 In 2000...the 29th marked the beginning of a near record hot
        streak for metro Denver.  The high recorded
        at Denver International Airport...exceeded the 90 degree mark
        for 17 consecutive days from June 29th through July 15th.
        The record of 24 consecutive 90 degree or above days was
        set from July 13th through August 5th...2008.
30    In 1879...dense smoke from mountain forest fires covered the
        city and obscured the sun as it set behind the mountains.
      In 1900...a thunderstorm produced northwest winds to 44 mph
        with gusts to 58 mph...but only a trace of rain.
      In 1917...north winds were sustained to 47 mph with gusts to
        52 mph.
      In 1942...a strong thunderstorm produced hail and heavy rainfall
        in south Denver.  Leaves were stripped from trees and heavy
        rain caused street flooding which halted traffic.  Hail of
        unknown size reached a depth of 9 inches on the ground.
      In 1965...funnel clouds were observed to the south of Stapleton
        International Airport and in Jefferson County...15 miles
        southwest of the airport.  Later...a tornado touched down
        briefly 1 mile east of Littleton...causing only minor damage.
        Another tornado was observed 12 miles southwest of Stapleton
        International Airport in Jefferson County.  Hail to 3/4 inch
        in diameter fell in the Bear Valley area...12 miles south-
        southwest of Stapleton International Airport.  Yet another
        tornado was sighted 10 miles northwest of the airport.
        Cloudbursts accompanied by hail battered areas of Arapahoe
        and Adams counties east of Denver...damaging ripening grain
        fields.  At Lafayette...3.50 inches of rain fell in 30
        minutes...causing some flooding.
      In 1982...numerous funnel clouds were observed over southwest
        metro Denver.  Only one funnel touched down near the
        intersection of Jewell and Kipling.  The tornado was on the
        ground for about 5 minutes and caused no damage except for
        uprooting some trees.  In addition...thunderstorms produced
        heavy rain and hail in the foothills west of Denver.  Over
        an inch of rain fell in a short time near Idaho Springs...
        causing Clear Creek to overflow its banks and flood a few
        low lying areas of the town.  A few people were evacuated...
        and water and mud entered several stores.  The heavy rain
        also washed out several roads.  Hail piled up to a depth of
        3 to 4 inches near Idaho Springs.   Hail to 3/4 inch was
        reported at many places across metro Denver including
        Stapleton International Airport.  Lightning struck a
        chemistry building on the University of Colorado campus in
        Boulder and started a small fire.  Thunderstorm wind gusts
        to 60 mph were reported near Brighton.
      In 1984...heavy rain caused some street and basement flooding
        in Littleton.  One location received 1.56 inches of rain in
        75 minutes.
      In 1987...a weak tornado near Watkins stayed on the ground for
        5 minutes.
      In 1990...a small twister touched down in an open field just
        north of the Rocky Mountain Arsenal.  No damage was
      In 1998...hail as large as 1 inch in diameter fell near
      In 2005...a severe thunderstorm produced hail as large as
        3/4 inch near Roggen.  The hail destroyed a wheat field.
      In 2006...the temperature reached a high of 98 degrees at
        Denver International Airport.  This marked the 19th day
        in June with a maximum temperature of 90 degrees or more
        setting a new all-time record for the month.
      In 2011...very strong thunderstorm winds were also observed
        across portions of the Urban Corridor. A peak wind gust to
        65 mph was recorded...2 miles northeast of Boulder with a
        gust to 63 mph at Front Range Airport at Watkins and
        7 miles southeast of Denver International Airport.  The
        peak wind gust measured at Denver International Airport
        itself was 45 mph.  A severe thunderstorm also produced
        one inch in diameter hail 2 miles south-southeast of
        Parker. In addition...a lightning strike destroyed a home
        in north Denver.
30-1  In 1873...heavy rainfall overnight totaled 1.42 inches.
        Mountain peaks to the southwest of the city were covered
        with fresh snow on the morning of the 1st.
1     In 1915...northeast winds sustained to 41 mph with gusts to
        50 mph occurred just before a thundershower in the evening.
        Rainfall was only 0.07 inch.
      In 1941...unusually heavy thunderstorm rains flooded
        basements and blocked traffic.  Water was curb high
        on many downtown streets.  The thunderstorm also pelted
        the city with hail of unknown size.  Rainfall in
        downtown Denver totaled 0.72 inch...but greater amounts
        likely occurred in other parts of the city.
      In 1960...a severe dust devil moving through an Adams County
        suburban area blew over a fireworks stand...injuring an 11-
        year-old boy customer and two women operators of the stand.
        The boy was found under the demolished stand 100 feet away.
      In 1961...hail as large as 1 1/4 inches in diameter was
        reported over east Denver.
      In ball size hail fell over portions of metro
        Denver.  Hail stones to 2 inches in diameter damaged roofs
        and broke windows in northeast Boulder.  Marble to golf ball
        size hail fell at the Boulder Airport.  A funnel cloud was
        sighted over the foothills near Boulder.  Hail stones of 1
        to 2 inches in diameter were measured at Jefferson County
        Airport near Broomfield.  Marble size hail fell in the
        vicinity of Arvada and Westminster.
      In 1982...severe thunderstorms dropped large hail in Denver...
        Boulder...Commerce City...Lakewood...Wheat Ridge...Golden...and
        Arvada.  Most locations reported hail size from 3/4 to 1 1/4
        inches in diameter.
      In 1990...the high temperature reached 102 degrees at
        Stapleton International Airport.
      In 1998...hail to 1 1/2 inches in diameter fell near Bennett.
      In 2001...the temperature climbed to a high of 101 degrees at
        Denver International Airport.
1-18  In 1874...a streak of 18 consecutive days of 90 degrees
        tied for second with another streak that was later set
        in the summer of 1901. The record of 24 consecutive days
        was established in the summer of 2008.
1-31  In was the hottest July on record in Denver since
        weather records began in 1872.  The average temperature for
        the month was 78.9 degrees which was 4.7 degrees above
        normal. There were 27 days in which the high temperature
        equaled or exceeded 90 degrees...which established a new
        record.  There were also 7 days in which the temperature
        equaled or exceeded 100 degrees which tied the record
        set in 2005.

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