Public Information Statement
Issued by NWS Denver/Boulder, CO

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NOUS45 KBOU 150859

Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MDT TUE MAY 15 2018

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

14-15 In 1977...the 14th to the 15th...high winds up to 100 mph
        felled hundreds of trees in Gilpin County and caused
        extensive damage to telephone and power lines.  Lumber
        and steel tanks were blown around in Boulder Canyon.  West
        winds gusted to 46 mph at Stapleton International Airport
        on the 15th.
14-18 In 1996...from the 14th to the 18th...a period of unusually
        warm weather resulted in 4 record maximum temperatures in
        5 days.  The record high temperatures were 87 degrees on
        the 14th...89 degrees on the 15th...and 93 degrees on both
        the 16th and 18th.  The temperature climbed to only 81
        degrees on the 17th which was not a record.
15    In 1894...southwest winds were sustained to 38 mph with gusts
        to 50 mph.
      In apparent cold front produced sustained northeast
        winds to 48 mph.
      In 1986...a thunderstorm dumped an inch of rain in an hour
        over the eastern part of Aurora.  Total rainfall from the
        storm was 1.62 inches.
      In 1989...a 47 year old man...a Lakewood police officer...was
        struck and injured by lightning.  Small hail piled up 3
        to 4 inches deep near Golden.  There was reported street
        flooding from heavy thunderstorm rains over western metro
        Denver.  Rainfall totaled 0.76 inch at Stapleton
        International Airport.
      In 1990...a thunderstorm produced a wind gust to 69 mph at
        Jefferson County Airport in Broomfield.  Thunderstorm winds
        gusting to 49 mph at Stapleton International Airport
        produced some blowing dust.
      In 1991...a funnel cloud was sighted near Morrison.  Later...
        hail up to 2 inches deep covered U.S. Highway 285 at South
        Turkey Creek Road in west metro Denver.  Baseball size hail
        was reported on the east side of Littleton.  Dime size hail
        was reported in Boulder.
      In 1993...lightning started a fire which damaged a home in
        Boulder.  No one was injured.
      In 1997...a wind gust to 58 mph was recorded at the site
        of the former Stapleton International Airport.  A street
        sign was blown down at the Havana Street exit along I-70.
      In 1999...lightning ignited a small fire in a 3-story
        structure in Sunshine Canyon above Boulder.  The fire
        was quickly extinguished and caused only minor damage.
      In 2003...thunderstorms produced very heavy rainfall and
        localized flash flooding in the foothills of central
        Boulder County.  Rainfall ranged from 1.5 to 2.5 inches
        in less than 2 hours.  Water ranging in depth from 6 to 9
        inches covered State Highway 119 in Boulder Canyon.  Dirt
        and rocks also washed over the roadway.  Some basements
        were flooded in the Sugarloaf area.  Rockslides were also
        reported at Boulder Falls...Lefthand Canyon...and Fourmile
      In 2015...Severe thunderstorms produced hail...from nickel to
        half dollar size...across parts of Adams...Arapahoe...Douglas
        and Weld Counties. Two tornadoes touched down briefly in
        Adams County; one tornado...rated an EF1...destroyed a storage
        shed north of Strasburg.
15-16 In 1957...from the 15th to the 16th...heavy snowfall totaled
        8.8 inches at Stapleton Airport. The greatest amount on the
        ground was 3 inches.
      In 1986...from the 15th to the 16th...a spring storm dumped 1
        to 2 inches of rain over metro Denver...but 2.71 inches fell
        at Buckley Field in Aurora.  Rainfall only totaled 0.84
        inch at Stapleton International Airport.  Snow fell in the
        foothills with 7 inches recorded in Coal Creek Canyon
        southwest of Boulder.

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