Public Information Statement
Issued by NWS Denver/Boulder, CO

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NOUS45 KBOU 170859

Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MDT TUE APR 17 2018

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

13-17 In 2001...a huge dust storm over southern and inner Mongolia
        during April 3rd through the 6th lifted desert dust into
        the jet stream.  This dust cloud moved over metro Denver
        on the 13th and persisted through the 17th.  The cloud
        created widespread the sky a milkish cast
        due to the scattering of incoming solar radiation.
15-17 In 1922...heavy snowfall totaled 9.0 inches in downtown
        Denver.  Most of the snow...6.0 inches...fell on the 16th.
        This was the third major snow storm in a week.  Northwest
        winds were sustained to 43 mph with gusts to 47 mph on the
16-17 In 1944...heavy snowfall totaled 7.5 inches in downtown
        Denver.  Northwest winds were sustained to 18 mph on
        the 16th.
16-18 In 2009...a potent spring storm brought heavy snow to locations
        in and near the Front Range Foothills.  A deep easterly
        upslope produced nearly 5 feet of snow in parts of the
        foothills.  The heavy snow resulted in the closure of
        Interstate 70...from Golden west to Vail...for approximately
        16 hours.  The heavy snow snapped power lines in Evergreen
        and Nederland.  The ensuing outages affected 14200
        In the Front Range Foothills...storm totals included:  56
        inches...3 miles south of Rollinsville; 54 inches...3 miles
        southeast of Pinecliffe...43 inches at Aspen Springs...42
        inches at Evergreen...38 inches near Conifer; 37 inches at
        St. Mary`s Glacier...and 34 inches near Nederland.
        Along the Urban Corridor and Palmer Divide...the heaviest
        snow occurred above 5500 feet on the 17th.  Storm totals
        included:  22 inches...8.5 miles southwest of Franktown; 18
        inches...10 miles south-southeast of Buckley Air Force Base;
        17 inches near Cherry Creek and 7 miles south of Sedalia...
        16 inches...6.5 miles southwest of Castle Rock; 15 inches
        near Beverly Hills; 12 inches near Highlands Ranch and
        Lafayette...with 11 inches in Broomfield.  Elsewhere storm
        totals ranged from 4 to 10 inches.  Officially...only 2.6
        inches of snow was observed at Denver International Airport.
        The 24-hr precipitation for the day however was 1.16 inches...
        which established a new record for Aprtil 17th.
17    In 1889...northwest winds were sustained to 48 mph.
      In 1899...apparent post-frontal north winds were sustained
        to 42 mph with gusts as high as 48 mph.
      In 1935...light dust moved over the city behind an apparent
        dry cold front...which produced northeast winds to 19 mph
        with gusts to 20 mph.
      In 1978...winds estimated to 70 mph occurred in Morrison.
        Northwest winds gusted to 49 mph at Stapleton International
      In 2000...strong pre-frontal winds and widely scattered
        thunderstorms caused high winds to develop across northern
        metro Denver and portions of the northeast plains.  Peak
        wind gusts included 75 mph at Louisville.  South winds
        gusted to only 28 mph at Denver International Airport.
      In 2002...strong southwest winds in advance of a cold front
        gusted to 52 mph at Denver International Airport.
      In 2003...severe thunderstorms produced 1 inch diameter hail
        7 miles east of Brighton.  Strong thunderstorm winds blew
        out an auto windshield near Denver International Airport
        where south winds gusted to 48 mph.
17-18 In 1878...the wind blew violently all day on the 17th with
        a maximum sustained velocity of 40 mph.  Dust hung over
        the city like a cloud.  The relative humidity was zero
        nearly all day.  A terrific gale blew overnight.  There
        was much damage to buildings...signs...fences...etc.  Some
        wind gusts were so strong as to jar buildings to their
        foundations.  The station anemometer recorded sustained
        winds to 50 mph with higher gusts before it was damaged
        by the winds.  The winds moderated during the day on the
        18th and ended at sunset.
      In rain changed to snow on the 17th
        around sunrise and continued through 9:00 AM on the 18th.
        Snowfall totaled 10.5 inches...but most of the snow melted
        as it fell.  The high temperature warmed to only 35 degrees
        on the 17th after a high of 76 on the 16th.  Northeast
        winds were sustained to 30 mph with gusts to 32 mph on
        the 17th.
      In 1998...more spring snow fell across metro Denver and in
        the foothills.  Snowfall totals included:  11 inches at
        Golden Gate Canyon; 10 inches at Highlands Ranch; 9 inches
        at Elizabeth; 8 inches at Broomfield and Morrison; and 7
        inches at Chief Hosa...Evergreen...Littleton...and Sedalia.
        Snowfall totaled only 3.2 inches at the site of the former
        Stapleton International Airport.  North winds gusted to
        22 mph at Denver International Airport.
17-19 In 1920...snow fell across the city continuously for 57 hours...
        from the early morning of the 17th until 11:40 AM on the
        19th.  The heavy wet snowfall totaled 18.2 inches with the
        greatest accumulation on the ground of 12 inches.  Winds
        during the storm were strong with sustained speeds in
        excess of 27 mph for over 40 consecutive hours...which
        created near-blizzard conditions.  The highest recorded
        wind speeds were 44 mph with gusts to 50 mph from the
        north on the 17th and 39 mph with gusts to 48 mph from
        the northwest on the 18th.  The strong winds piled the
        snow into high drifts which stopped all Denver traffic.
        Railroads were blocked with only one train entering the
        city on the 19th.  All interurban trains were
        were the 13 trolley lines.  Thus...many workers were unable
        to get home at night and filled all of the downtown hotels
        to capacity.  No grocery or fuel deliveries were possible...
        except milk and coal to hospitals and to families with
        babies.  No lives were lost in the city...but several people
        perished in surrounding districts.  Stock losses were heavy
        on the plains.  Temperatures during the storm were in the

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