Public Information Statement
Issued by NWS Denver/Boulder, CO

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NOUS45 KBOU 180959

Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MST THU JAN 18 2018

...Today in metro Denver weather history...

14-21 In 1930...a protracted cold spell occurred when low temperatures
        plunged below zero on 8 consecutive days.  The coldest low
        temperatures of 20 degrees below zero on the 17th and 19
        degrees below zero on the 16th were record minimums for
        the dates.  High temperatures during the period ranged from
        18 on the 18th to zero on the 20th.  Two degrees on the
        15th was a record low maximum temperature for the date.
15-23 In 1962...a protracted cold spell kept metro Denver in the
        deep freeze for more than a week.  From the 15th thru the
        23rd...low temperatures were zero or below for 9 consecutive
        days...but a daily record low was set only on the 22nd when
        the temperature dipped to 14 degrees below zero.  A record
        low maximum for the date was also set on the 22nd when the
        temperature climbed to only 11 degrees.  The coldest high
        temperature was 3 degrees above zero on the 21st...which did
        not break the record.  The protracted cold was broken for
        only a few hours on the afternoon of the 20th when chinook
        winds warmed the temperature to a high of 38 degrees before
        another surge of cold Arctic air plunged temperatures
        back into the deep freeze that evening.  The severe cold
        caused much damage to water systems.  A woman was frozen to
        death at Morrison.  There were other deaths attributable to
        the weather...including traffic deaths and heart attacks
        from overexertion.
16-18 In 1943...light snowfall totaled 3.2 inches over the 3 days.
        This was the only measurable snow of the month.  North
        winds were sustained to 20 mph on the 16th.
      In 2011...very strong winds associated with an upper level
        jetstream over Colorado produced blizzard conditions in
        the mountains above timberline.  Peak wind gusts
        included:  99 mph atop Loveland Pass...94 mph...2 miles
        southwest of Mary Jane...80 mph atop Berthoud Pass and
        79 mph atop Niwot Ridge.  Storm totals in the ski areas
        west of Denver ranged from 8 to 14 inches.
17-18 In 1974...rare overnight January rainfall totaled 0.12 inch
        on the 17th and 0.26 inch on the 18th when it was
        briefly mixed with snow.
      In 2012...Damaging winds developed in and near the Front Range.
        In Boulder...the high winds knocked down several trees...power
        poles and electrical lines. Some of the fallen trees damaged
        homes and automobiles. A semi-trailer was blown on its side
        along State Highway 93 near Marshall. Peak wind gusts
        included: 104 mph in south Boulder; 98 mph...3 miles
        southwest of Pinecliffe; 95 mph...2 miles northwest of Rocky
        Flats; 92 State Highway 93 near Marshall; 87 mph at
        Berthoud Pass and in Boulder Canyon; 80 mph...5 miles west-
        northwest of Boulder; 83 mph at NCAR Mesa Lab; 78 mph...8
        miles northeast of Four Corners; 79 mph at the National Wind
        Technology Center; 76 mph at Wondervu; 75 mph atop Loveland
        Pass and the NCAR Foothills Lab in Boulder; 74 mph at Blue
        Mountain...Boulder Municipal Airport...1 mile northwest of
        Lyons; 73 mph...4 miles east-northeast of Nederland; 72 mph
        at the Junction of State Highways 72 and 93; 62 mph in
        Superior; and 61 mph at Erie Municipal Airport. A peak wind
        gust of 38 mph from the northwest was observed at Denver
        International Airport.
18    In 1874...light rain...rare in January...changed to snow
        which totaled 3 inches.
      In 1959...strong gusty winds caused damage to buildings...
        airplanes...trees...and a radio tower in Boulder...
        Broomfield...Denver...and Longmont.  A wind gust to 70 mph
        was recorded in Longmont.  In Boulder...the top of a radio
        tower was toppled and signs...trees...and trailer houses were
        blown over.  In southwest Denver...a mother and child were
        injured when their car was struck by a sign that had blown
        loose in the wind.  Minor damage to buildings and power
        lines was reported in the area.  Northwest winds gusted
        to 38 mph at Stapleton Airport.  Post-frontal east
        northeast winds gusted to 40 mph.
      In 1961...northeast winds gusted to 29 mph and snowfall
        totaled only 0.1 inch at Stapleton Airport...but 2 to 7
        inches of snow fell in the foothills west of Denver.
      In 1975...a strong cold front roared through metro Denver
        producing north wind gusts to 52 mph and briefly reducing
        the visibility at Stapleton International Airport to less
        than 5/8 mile in blowing dust.  The windstorm caused
        considerable damage to utility
        commercial schools.  Heaviest
        damage was near the foothills where winds hit 80 mph
        at Boulder and at Rocky Flats northwest of Denver.
        The cold front caused temperatures to drop 13 degrees
        in one hour.  Temperatures fell from a maximum of 61
        degrees in the early afternoon to a minimum of 31 degrees
        before midnight.
      In 1984...the coldest morning of the new year produced
        record breaking temperatures with a low of 19 degrees
        below zero for the date at Denver.  Many other cities
        also reported record cold.
      In 1985...highs winds occurred in the foothills with gusts
        reported to 60 mph at Evergreen.  Northwest winds gusted
        to 38 mph at Stapleton International Airport.
      In 1986...wind gusts to 60 mph were reported in Boulder.
        West winds gusted to 31 mph at Stapleton International
      In 1999...damaging downslope winds caused problems in the
        foothills.  In Eldora...the roof was blown off an A-frame
        house.  Peak wind gusts included:  100 mph at Central
        City...84 mph at Wondervu...77 mph atop Blue Mountain...
        75 mph in Golden Gate Canyon...72 mph at the Rocky Flats
        Environmental Test Facility...and 70 mph at the National
        Center for Atmospheric Research Mesa Laboratory near
        Boulder.  West winds gusted to 36 mph and warmed
        the temperature to a high of 63 degrees...the highest
        reading of the month at Denver International Airport.
      In 2006...high winds occurred in northern Jefferson and
        southern Boulder counties.  A peak wind gust to 81 mph
        was recorded near Superior along with a gust to 80 mph
        near Boulder.  Five teenagers started a grassfire near
        Plainview atop Rocky Flats.  The high winds coupled
        with very dry conditions allowed the fire to quickly
        spread...forcing the evacuation of dozens of residents
        and the closure of State Highways 93 and 72.  The fire
        consumed 2700 acres and destroyed two outbuildings.  No
        homes were damaged and no one was injured by the blaze.
        West winds gusted to 30 mph at Denver International
18-19 In 1980...a slow moving storm deposited 4 to 10 inches of
        snow across metro Denver with the greatest amounts in the
        foothills.  Flights were delayed 30 to 40 minutes at
        Stapleton International Airport where snowfall totaled
        5.5 inches and north winds gusted to 22 mph.
      In 1988...a blizzard produced strong winds and heavy snow
        across eastern Colorado.  Ten-foot drifts were common and
        many roads were closed including I-70...I-76...and I-25.
        In the Denver area...4.0 inches of snow fell at Stapleton
        International Airport where north winds gusting to 40 mph
        reduced the visibility to 1/2 mile at times.
18-20 In 1958...snowfall totaled 6.9 inches at Stapleton Airport
        where east-northeast winds gusted to 26 mph on the 18th.
18-24 In 2005...a week of mid-winter unseasonably warm weather
        pushed high temperatures into the 60`s or more on all
        but one day.  During the period...the highest temperature
        of 70 degrees on the 20th was a new record maximum for
        the date.  Low temperatures remained above freezing on
        4 of the days.

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