Public Information Statement
Issued by NWS Denver/Boulder, CO

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Public Information Statement
National Weather Service Denver/Boulder CO
645 PM MDT SAT SEP 30 2017

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

30-1  In 1959...heavy snowfall totaled 5.9 inches at Stapleton
        Airport.  Winds were light.
1     In 1892...the highest temperature ever recorded in October...
        90 degrees...occurred.  This is also the latest 90 degree
        reading of the season.
      In 1898...southwest winds were sustained to 40 mph with
        gusts to 49 mph in the city.
      In 1927...a trace of snow was the only snow of the month...
        ranking the year...amongst several other years...the
        second least snowiest on record.
      In 1971...a wind gust to 90 mph was recorded at Buckley
        Field in Aurora.  The severe winds caused damage in
        northeast metro Denver.  A brick wall of a bowling alley
        was blown down...the roof was blown off a garage...and some
        business signs were damaged.  A man in the bowling alley
        was injured by flying glass.  Northwest winds gusted to
        43 mph at Stapleton International Airport.
      In 1994...unusually strong thunderstorms for so late in the
        season pummeled metro Denver with large hail.  The largest
        hail...2 inches in diameter...fell at Buckley Field.  Hail
        1 3/4 inches in diameter fell 7 miles northeast of Boulder
        and at Niwot.  Hail 3/4 to 1 1/2 inches in diameter fell in
        Boulder...Arvada...Wheat Ridge...Edgewater...Capitol Hill and
        northwest Denver...Bennett...and Strasburg.  Hail of unknown
        size damaged a Boeing 737 aircraft and injured both pilots
        at Stapleton International Airport when the windshield was
        broken out on takeoff.  Half inch diameter hail fell at
        Stapleton International Airport where northwest winds
        gusted to 40 mph and rainfall totaled 0.82 inch.
      In 2009...strong downslope winds near the foothills produced
        a peak wind gust to 84 mph at the National Wind Technology
        Center near Rocky Flats.
      In 2014...severe thunderstorms produced wind gusts to 60 mph
        across parts of Arapahoe and Denver Counties.  The intense
        wind gusts downed trees and power lines which caused a
        power outage near the Denver Technology Center.  At Denver
        International Airport...a peak wind gust to 37 mph was
        measured from the northwest.
2     In 1903...southwest winds were sustained to 42 mph with gusts
        as high as 60 mph.  The strong chinook winds warmed the
        temperature to a high of 78 degrees.
      In 1910...an apparent dry microburst produced sustained
        northeast winds to 43 mph.
      In 1934...a trace of rain was the only precipitation of the
        month.  This was the driest October on record.
3     In 1875...very dense haze hid the mountains from view as
        observed from the city.
      In 1933...rainfall of just 0.01 inch was the only precipitation
        of the month.  This was the second driest October on record.
      In 1954...the low temperature cooled to only 60 degrees...the
        all-time record high minimum for the month October.
3-4   In 1969...the first snowfall of the season totaled 16.0 inches
        at Stapleton International Airport.  There was a thunder
        snow shower on the evening of the 3rd...but otherwise little
        wind with the storm.  The greatest snow depth on the ground
        was 8 inches due to melting.  Heavy wet snow accumulated on
        trees...which were still in full leaf...and caused widespread
        damage from broken limbs and downed utility lines.
3-5   In 1984...the remnants of Pacific Hurricane Polo produced
        heavy rain over northeastern Colorado.  Most locations
        received between 1.00 to 2.50 inches of rain...but 3.45
        inches fell in Littleton.  Rainfall totaled 1.73 inches
        at Stapleton International Airport...where north winds
        gusted to 24 mph.
4     In 1912...sustained south winds to 55 mph with gusts to
        60 mph raised the temperature to a high of 83 degrees...
        the warmest temperature of the month that year.
      In 1924...west winds were sustained to 46 mph with gusts
        to 50 mph in the city.  The apparent bora winds cooled
        the temperature to a high of 57 degrees from a high of
        70 degrees on the 3rd.
      In 2004...several small tornadoes touched down near Brighton...
        Barr Lake...and Hudson in Adams and southern Weld counties.
        Most of these caused no damage.  However...a small tornado
        5 miles southeast of Brighton caused extensive damage to a
        recreational vehicle and severely damaged a barn.  The barn
        was torn from its foundation...and the roof was thrown 100
        feet.  Four llamas in the barn were injured when it
        collapsed.
4-5   In 1997...unusually warm weather resulted in two temperature
        records.  High temperature of 87 degrees on the 4th exceeded
        the old record set in 1922 by one degree.  High temperature
        of 86 degrees on the 5th equaled the record set in 1990 and
        previous years.
5     In 1962...unusually severe thunderstorms for this late in the
        season affected areas from Boulder northward.  Hail up to
        golf ball size and strong gusty winds did much damage to
        roofs...windows...and signs in Boulder.  Heavy rainfall caused
        local flooding.
      In 1994...lightning caused a power outage to over 2400 homes
        for a few hours in and around Nederland in the foothills
        southwest of Boulder.  Very strong winds accompanied the
        thunderstorm.  Thunderstorm winds gusted to 60 mph and hail
        to 1/2 inch diameter fell in Lafayette.  Strong microburst
        winds gusting to 69 mph near Strasburg caused an oil rig
        to topple onto two vehicles...injuring one person.  The
        strong winds in the area also downed a few power poles...
        but caused power outages to only a few homes.
      In 1995...strong winds spread from the foothills onto the
        plains.  Wind gusts to 77 mph were reported atop Squaw
        Mountain west of Denver.  On the plains...winds gusted
        to 60 mph at Kennesburg and to 62 mph near Strasburg.
        North winds gusted to 41 mph at Denver International
        Airport.
6     In 1900...northwest winds were sustained to 40 mph with
        gusts as high as 50 mph in downtown Denver.
      In 1903...northwest winds were sustained to 40 mph with
        gusts to 50 mph.  The strong winds warmed the temperature
        to a high of 71 degrees in the city.  The low reading
        was only 46 degrees.
      In 1910...light smoke from forest fires drifted over the
        city.
      In 1976...an Arctic cold front brought light snow over
        the foothills above 6 thousand feet.  Traffic was
        snarled at many locations.  Only a trace of snow
        fell at Stapleton International Airport where
        rainfall totaled 0.20 inch and northeast winds gusted
        to 41 mph.
      In 1991...the brilliant orange sunset was apparently the
        result of an extensive volcanic smoke layer in the upper
        atmosphere.
      In 1994...strong west to northwest winds developed in the
        foothills above 9500 feet.  A wind gust to 78 mph was
        recorded atop Squaw Mountain west of Denver and to
        72 mph at Ward northwest of Boulder.  Northwest winds
        gusted to 35 mph at Stapleton International Airport.
      In 2011...strong winds developed in and around the Denver
        area ahead of an approaching storm system. At the
        National Wind Technology Center...peak wind gusts ranged
        from 79 to 92 mph during the early morning hours.
        Across metro Denver...the strong winds toppled a few
        trees and damaged patio furniture. The wind caused a
        few flight delays at Denver International Airport due
        to a partial ground stoppage of incoming flights. Peak
        wind reports also included: 66 mph at Cedar Point...63
        mph at Denver International Airport...60 mph at Buckley
        Air Force Base; 59 mph at Highlands Ranch; 58 mph at
        Deer Trail and Rocky Mountain Metro Airport in
        Broomfield; 55 mph at Bennett...Centenniel Airport and
        City Park in Denver.
7     In 1903...north winds were sustained to 40 mph with gusts
        to 48 mph.
      In 1917...post-frontal northwest winds were sustained to
        45 mph with gusts to 52 mph.  Rain was mixed with a
        trace of snow...the first of the season.  Precipitation
        totaled 0.22 inch and included the occurrence of hail...
        even though no thunder was heard.
      In 1950...strong winds caused a power outage in Boulder.
        This was the heaviest windstorm since January.  Damage
        was minor.  Northwest winds gusted to only 35 mph at
        Stapleton Airport.
      In 1985...strong chinook winds buffeted the Front Range
        foothills.  Wind gusts between 60 and 70 mph were
        reported in Boulder and atop Squaw Mountain west of
        Denver.  Southwest winds gusted to 41 mph at Stapleton
        International Airport.
7-8   In 1990...the season`s first snow occurred.  Snowfall
        amounts varied from 3 to 7 inches across metro Denver.
        Snowfall totaled 4.0 inches at Stapleton International
        Airport where north winds gusted to 29 mph.

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