Public Information Statement
Issued by NWS Denver/Boulder, CO

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NOUS45 KBOU 280045

Public Information Statement
National Weather Service Denver/Boulder CO
645 PM MDT SAT AUG 27 2016

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

19-30 In 1875...grasshoppers appeared in great numbers at 10:00 AM
        on the 19th.  Thousands landed on the ground.  The streets
        were literally covered with them.  Swarms of grasshoppers
        were seen on each day.  All gardens in the city were
        devastated...and in the countryside the grasshoppers were
        very destructive to ripened grain.  On the 30th the
        grasshoppers were so numerous as to almost darken the sun.
27-28 In 2004...a brief chilly spell resulted in three temperature
        records.  The high temperature of 55 degrees on the 27th
        was a record low maximum for the date.  The low temperature
        of 48 degrees on the 27th equaled the record minimum for
        the date.  The low temperature of 42 degrees on the 28th
        was a record minimum for the date.
28    In 1887...a dry thunderstorm produced north winds to 48 mph
        but only a trace of rainfall.
      In man was seriously injured by lightning while
        riding on a roller coaster at a Denver amusement park.  An
        airline employee was injured when lightning struck a
        jetliner he was servicing at Stapleton International
        Airport.  A lightning-caused fire did extensive damage to
        one house and minor damage to several others in the City of
      In 1970...a microburst wind gust to 53 mph was recorded at
        Stapleton International Airport.
      In 2002...a severe thunderstorm produced 3/4 inch diameter
        hail near Parker.
      In 2005...lightning sparked a small fire near Jamestown.  The
        blaze was quickly contained and consumed less than an acre.
29    In 1876...after the passage of a gentle rain shower to the east
        during the late evening hours...the moon shone brightly and
        a remarkably bright lunar rainbow appeared.
      In apparent cold front produced sustained northeast
        winds to 40 mph.
      In 1946...the high temperature warmed to only 55 degrees...the
        record low maximum for the month.
      In 1989...a spectacular lightning display knocked out power to
        300 blocks in southeast Denver.  One bolt started a fire in
        a lumber yard in the northeast part of the city...and the
        attic of a home in the same area was set ablaze by a
        lightning bolt.
      In 1996...3/4 inch diameter hail was measured in Parker.
      In 2000...lightning struck two homes in Thornton.  The extent
        of damage was unknown.
      In 2002...two small tornadoes caused damage in southeast metro
        Denver.  The first tornado...associated with a multi-vortex
        storm...touched down briefly near E-470 and South Jordan
        Road.  Some fences were damaged...and a few trees were blown
        down.  A few of the homes also sustained minor roof damage.
        Damage from this storm totaled 100 thousand dollars.  The
        second tornado associated with the storm touched down in a
        subdivision that was under construction at Gartrell and
        Arapahoe roads.  Four large condominiums under construction
        were destroyed.  The most heavily damaged portions of the
        structures were still in the framing stages.  Adjacent
        sections where enclosed walls were in place were not
        destroyed.  A man suffered 4 broken ribs and several cuts
        and bruises when the trailer he sought shelter in was
        flipped three times and torn apart by the twister.  Damage
        from this storm totaled 6 million dollars. A severe
        thunderstorm produced 1 inch diameter hail near Evergreen.
      In 2006...severe thunderstorms produced large hail in the
        foothills west of Denver.  Hail to 1 inch in diameter fell
        near Blackhawk.  Hail as large as 7/8 inch was measured
        near Idaho Springs...along with 3/4 inch hail near Nederland
        and Conifer.
30    In 1981...60 mph winds were reported in Boulder.
      In 2004...a severe thunderstorm produced hail as large as
        1 inch in diameter in south Aurora near Cherry Creek.
31    In 1951...hail as large as 1 3/4 inches in diameter caused
        an estimated 300 thousand dollars damage in metro Denver.
        Hail as large as 1 1/2 inches in diameter was measured
        at Stapleton Airport.
      In 1978...strong thunderstorm winds tore the roof off an
        apartment building in Aurora...downed trees...and damaged
        windows in Denver.  A microburst wind gust to 58 mph was
        recorded at Stapleton International Airport.
      In 1985...a thunderstorm wind gust to 60 mph was clocked at
        Buckley Field in Aurora.
      In 1997...hail to 1 1/4 inches in diameter was measured in
      In 2006...a female postal worker was struck and injured by
        lightning while delivering mail in Westminster.
      In 2008...lightning struck a home in Brighton...damaging the
        roof and a bedroom.  The damaged totaled 20 thousand
1     In 1951...large hail pounded Boulder...causing thousands of
        dollars in damage to roofs and automobiles.  Heavy
        thunderstorm rainfall flooded basements and produced
        widespread street flooding.
      In 1966...severe thunderstorms caused local flooding in areas
        from Denver to the north and east.  There was scattered
        damage from hail and lightning.  Streets were flooded in
        Boulder...and streets and basements were flooded in several
        areas of metro Denver.  The public reported 1 inch
        diameter hail in Aurora and near Cherry Creek Reservoir.
        Thunderstorm rainfall totaled only 0.39 inch at Stapleton
        International Airport.
      In 1985...severe thunderstorms dumped heavy rain and hail at
        many locations along the Front Range from Denver south.
        The southern and eastern suburbs of metro Denver were
        especially hard hit.  Rainfall from 1 1/2 to 3 inches
        caused extensive street flooding in Aurora where two
        creeks rose out of their banks.  Two homes in the city
        suffered minor lightning damage.  Almost 4 inches of rain
        fell in the Parker area.  Hail up to ping-pong ball size
        piled up to a foot deep and closed a road in Evergreen.
        Hail as large as 1 3/4 inches in diameter was reported
        8 miles northeast of Deckers.  Wind gusts to 65 mph were
        estimated in southeast Aurora.
      In 1990...marble size hail piled up to 2 inches deep in the
        foothills community of Kittredge...18 miles southwest of
        Denver.  As much as half an inch of rain fell in just 15
        minutes and caused minor road and small stream flooding.
        A thunderstorm dropped pea to marble size hail and brief
        heavy rain near Ward Road and 64th Avenue in Arvada.
        Minor street and small stream flooding was reported in
        the area.
      In 1995...a strong thunderstorm microburst with only a few
        drops of rain produced a recorded wind gust to 85 mph at
        the site of the former Stapleton International Airport.
        The wind gust occurred at 8:30 PM MDT.  The all-time
        highest recorded temperature in September...97 degrees...
        occurred.  The same temperature also occurred on
        September 5...1899...September 4...1960...and September 4...
1-5   In 1995...record breaking heat occurred on the first 5 days
        of the month when the temperature climbed into the 90`s
        on each day.  Record high temperatures of 97 degrees on
        both the 1st and 4th equaled the all-time record maximum
        for the month.  High temperature of 95 degrees on the 3rd
        was a record for the date.  High temperatures of 94 degrees
        on both the 2nd and the 5th were not records.  The low
        temperature of 64 degrees on the 4th equaled the record
        high minimum for the date.
1-7   In 1978...the temperature reached 90 degrees or more on seven
        consecutive days with the highest temperature...94 degrees...
        recorded on both the 4th and 6th.
2     In 1938...heavy cloudbursts in the foothills near the top of
        Genesee Mountain caused flash flooding on Bear Creek at
        Morrison.  Nearly 8 inches of rain fell just north
        of Morrison in 6 hours and drowned 6 people in a car
        between Morrison and Kittredge.  Damage was estimated at
        nearly a half million dollars.  Flash flooding also
        occurred on South Boulder Creek in Eldorado Springs.
        Rainfall totaled 4.42 inches in Eldorado Springs...and
        rainfall was estimated to more than 6 inches in the
        foothills west of the town.  Many buildings and residences
        were damaged in Eldorado Springs...and bridges were swept
        away.  The high waters forced residents from their homes
        as far downstream as Erie.  This was the flood of record
        on South Boulder Creek.
      In 1973...hail to 3/4 inch diameter was reported in Boulder.
      In 1987...lightning struck two men who were standing under a
        tree in downtown Denver.  Both were seriously injured and
      In 1996...lightning sparked a brush fire in the south buffer
        zone of the Rocky Flats Environmental Test Facility.  No
        structures were damaged...but the fire burned about 100
        acres of grassland before being contained.
2-3   In 1892...there was a trace of rainfall each day.  This...
        together with a trace of rain on both the 7th and 8th...was
        the only rainfall of the month...making the month the driest
        on record.  The monthly record was equaled in 1944.
3     In 1901...a thunderstorm produced rain...hail of unknown size...
        and south winds sustained to 40 mph with gusts to 43 mph.
      In 1961...Labor Day snow storm is the earliest date of the
        first snow...trace and measurable...of the season.  The heavy
        wet snow broke many limbs from trees that were still in full
        foliage.  The storm produced 4.2 inches of snowfall at
        Stapleton Airport with nearly a foot of snow in western
        suburbs and in the foothills.  Minimum temperature of 33
        degrees was a record for the date and the coldest ever
        recorded so early in the season.
      In 1999...severe thunderstorms dumped large hail across metro
        Denver.  Hail as large as 1 inch in diameter was measured
        near Cherry Creek in Aurora and near Bennett.  Hail to 3/4
        inch in diameter fell in the City of Denver.
      In 2002...a thunderstorm produced a wind gust to 51 mph at
        Denver International Airport.
      In 2003...very heavy thunderstorm rain washed out parts of
        the Virginia Canyon Road above Idaho Springs.  Up to
        4 feet of mud reportedly washed down the road during the
        storm.  Several vehicles were trapped on the road.  In
        Idaho Springs...several streets...including the main street...
        were also buried in mud and gravel.  Some buildings in
        town experienced minor flooding...including the basement
        of the town library and the police station.
3-6   In 1909...rainfall for the 4 days accumulated to 3.97 inches
        in Boulder...while in Denver rainfall totaled 2.45 inches
        on the 4th...5th...and 6th.

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