Public Information Statement
Issued by NWS Denver/Boulder, CO

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Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MST MON DEC 11 2017

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

2-17  In 1939...more than 2 weeks of unseasonably warm weather
        made the month the 3rd warmest on record.  Seven daily
        temperature records were set...including the all time
        record high temperature for the month of 79 degrees on
        the 5th.  Daytime highs were balmy with 14 days in the
        60`s and 70`s.  Low temperatures dipped to freezing or
        below on only 5 days.  The period was dry with only a
        trace of snow on the 12th.
3-15  In 1972...a protracted cold spell held an icy grip on metro
        Denver when maximum temperatures never reached above
        freezing for 10 consecutive days from the 3rd through
        the 12th and minimum temperatures dipped below zero on
        eleven consecutive days from the 5th through the 15th.
        Daily low temperature records were set with 15 degrees
        below zero on the 5th...17 degrees below zero on the 6th...
        and 18 degrees below zero on the 10th.  Daily record low
        maximum readings were set with 3 degrees on the 6th and
        6 degrees on the 9th.  The very cold temperatures were
        caused by 3 to 5 inches of snow cover and a Canadian air
8-12  In 1932...the second longest sub-zero period on record in
        Denver occurred.  The temperature fell below zero shortly
        after 1:00 PM on the 8th and remained below zero for 92
        hours until 9:00 AM on the 12th.  The lowest temperature
        recorded during this period was 13 degrees below zero on
        both the 9th and 11th.  That temperature on the 11th was
        a record low for the date.  High temperatures of 4 on the
        8th...5 below zero on the 9th...1 below zero on the 10th...
        and 6 below zero on the 11th were record low maximum
        temperatures for those dates.  Light north winds at 5 to
        10 mph were accompanied by occasional light snow...which
        totaled only 2.2 inches.
9-13  In 1961...cold arctic air produced a protracted cold period.
        The temperature plunged to 16 degrees below zero on the
        10th...establishing a new record for the date and the
        coldest reading since 25 degrees below zero on February 1...
        1951.  Low temperatures dipped below zero on 5 consecutive
        days with 9 degrees below zero on the 9th...16 below on the
        10th...10 below on the 11th...and 12 below on both the 12th
        and 13th.  High temperatures reached only 3 degrees on the
        10th and 6 degrees on the 11th.
10-11 In 1933...downslope winds produced warm temperatures...resulting
        in record high minimums of 46 degrees on the 10th and 44
        degrees on the 11th.  High temperatures of 66 degrees on the
        10th and 62 degrees on the 11th were not records.  Southwest
        winds were sustained to 16 mph on the 10th.
      In 1939...high temperatures of 70 degrees on the 10th and 74
        degrees on the 11th were record maximums for the dates.
        The low temperatures of 39 degrees on the 10th and 41
        degrees on the 11th were not records.
      In 1948...high winds in Boulder and Louisville caused 1750
        dollars in damage.  Wind gusts in excess of 70 mph were
        reported at Valmont and Boulder Airport.  Chinook wind
        gusts to 60 mph briefly reduced the visibility to 1/4 mile
        in blowing dust at Stapleton Airport.
      In 1989...the season`s greatest snowfall to date hit metro
        Denver with 6 to 12 inches of snow.  Flight delays at
        Stapleton International Airport reached 2 hours.  Multiple
        wrecks snarled traffic on I-25 both north and south of the
        city.  Snowfall totaled 7.0 inches at Stapleton
        International Airport where north winds gusted to 25 mph
        on the 10th.
11    In 1938...snowfall totaled 3.7 inches in downtown Denver.
        North winds were sustained to 21 mph with an extreme
        velocity to 22 mph.
      In 1967...wind gusts to 58 mph in downtown Boulder caused
        minor damage.  Northwest winds gusted to 47 mph at
        Stapleton International Airport.
      In 1980...winds to 60 mph were reported in Boulder.  Northwest
        winds gusted to 23 mph at Stapleton International Airport.
        The chinook winds warmed temperatures to a high of 67
      In 1994...strong gusty winds occurred along the Front Range
        eastern foothills.  A wind gust to 67 mph was recorded in
        Boulder with a gust to 58 mph measured at Jefferson County
        Airport near Broomfield.  No damage was reported.
        Northwest winds gusted to 31 mph at Stapleton International
11-12 In 1903...a sharp cold front on the 11th plunged temperatures
        from a high of 59 degrees to a low of 15 degrees...produced
        northeast winds sustained to 42 mph along with gusts as
        high as 60 mph...and produced 1.3 inches of snow overnight.
        The high temperature on the 12th was only 25 degrees.
      In 1968...strong winds buffeted the eastern foothills and
        plains and caused light...but widespread property damage.
        Wind gusts of 50 to 75 mph were reported.  West winds
        gusted to 52 mph at Stapleton International Airport.
11-13 In 1940...5.4 inches of snow fell across downtown Denver.
        This was the only snowfall of the month.  Temperatures
        were quite cold on the 13th with a high of 6 degrees and
        a low of 2 degrees below zero.
      In 1984...up to 6 inches of new snow fell over metro Denver...
        hampering flight operations at Stapleton International
        Airport where snowfall totaled 3.8 inches and east winds
        gusted to 25 mph on the 11th.

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