151
NOUS45 KBOU 050859
PNSBOU
COZ030>051-052300-

Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MDT SUN MAY 5 2024

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

1-5   In 1898...from the 1st to the 5th...snowfall totaled 15.5
        inches in downtown Denver. Most of the snow...6.2 inches...
        fell on the 3rd.  Most of the snow melted as it fell.
        The greatest snow depth on the ground was only 2.5 inches
        on the 3rd at 8:00 PM. This was the only snowfall during
        the month.  Northeast winds were sustained to 22 mph on
        the 1st.
2-5   In 2001...from the 2nd to the 5th...a very slow moving Pacific
        storm system became parked near the Four Corners region...
        which allowed heavy snow to develop above 6500 feet in the
        foothills with a mix of rain and snow over lower elevations
        of metro Denver.  Snowfall totals included:  21 inches atop
        Crow Hill and at Idaho Springs; 19 inches near Blackhawk;
        and 18 inches in Coal Creek Canyon...Genesee...and 11 miles
        southwest of Morrison.  Snowfall totaled 6.2 inches at the
        site of the former Stapleton International Airport.
        Precipitation (rain and melted snow) totaled 2.09 inches at
        Denver International Airport where north winds gusted to 30
        mph on the 2nd.
3-5   In 1908...rain changed to snow on the evening of the 3rd
        and continued through the early evening of the 5th.
        Snowfall totaled 10.0 inches over downtown Denver.
        This was the last measurable snow of the season.
        Precipitation totaled 1.51 inches.  North winds were
        sustained to 23 mph on the 3rd...33 mph on the 4th...and
        21 mph on the 5th.  Three temperature records were set.
        High temperatures of 30 degrees on the 4th and 38 degrees
        on the 5th were record low maximum temperatures for the
        dates.  The reading on the 4th was also the all-time
        record low maximum for the month of May.
      In 2007...a slow moving Pacific storm system...from the
        Desert Southwest...brought a period of unsettled weather
        to the region.  During the 3-day period...locally heavy
        snow was reported over parts of the Front Range Foothills.
        Storm totals included:  15 inches near Conifer...14.5
        inches west of Jamestown...13.5 inches; 6 miles southwest
        of Evergreen...and 12.5 inches at Pine Junction.  Severe
        thunderstorms...producing large hail...up to one inch in
        diameter were observed in the vicinity of Boulder and
        Hudson.  Lightning struck a residence in Jefferson County.
        The roof was hit...causing the attic to catch fire.
        At Denver International Airport...lightning struck a
        United Airlines jet as it was pushing away from
        the gate.  The passengers were taken off the jet and put
        on another plane.
4-5   In 1986...the 4th to the 5th...high winds buffeted the
        foothills.  Wind speeds of 60 to 75 mph were recorded in
        Boulder.  At Stapleton International Airport...west winds
        gusted to 45 mph on the 4th and to 40 mph on the 5th.
      In 2000...a brief warm spell resulted in setting two daily
        high temperature records.  The temperature climbed to
        highs of 87 degrees on the 4th and 89 degrees on the 5th.
4-8   In 1969...from the 4th to the 8th...heavy rains caused
        flooding on Boulder Creek in Boulder...which resulted in
        one death on the 7th. Flooding also occurred on Bear
        Creek in Sheridan and on the South Platte River in Denver.
        Rain over most of the eastern foothills started late on
        the 4th and continued with only brief interruptions in
        many areas until the morning of the 8th.  Very high rates
        of rainfall occurred on the 6th and 7th with the greatest
        intensities in a band along the foothills from about 25
        miles southwest of Denver northward to Estes Park.  Storm
        totals by both official and unofficial measurements
        exceeded 10 inches over much of this area and were over 12
        inches in some localities.  Heavy snow fell in the higher
        mountains and in the foothills later in the period.  The
        saturation of the soil resulted in numerous rock and land
        slides...and the heavy run-off caused severe damage along
        many streams and flooding on the South Platte River.  Many
        foothill communities were isolated as highways were blocked
        and communications disrupted.  Roads were severely damaged
        over a wide area...and a large number of bridges washed out.
        Many roads were closed due to the danger from falling
        rocks.  A building in Georgetown collapsed from the weight
        of heavy wet snow.  In Boulder...a man drowned when caught
        by the flooding waters of Boulder Creek...and a patrolman was
        injured.  Rainfall totaled 7.60 inches in Boulder with
        9.34 inches recorded at the Public Service Company electric
        plant in Boulder Canyon.  In Morrison...rainfall totaled
        11.27 inches in 4 days.  Heavy rainfall totaled 4.68 inches
        at Stapleton International Airport over 3 days from the 5th
        through the 7th.  Rainfall of 3.14 inches was recorded in 24
        hours on the 6th and 7th.  Downstream flooding continued
        along the South Platte River until the 12th when the flood
        crest reached the Nebraska line.
5     In 1903...apparent post-frontal northeast winds were sustained
        to 48 mph with gusts to 60 mph.
      In 1950...a northwest wind gust to 52 mph was recorded at
        Stapleton Airport.
      In 1969...a funnel cloud was observed for 2 to 3 minutes just
        north of Parker.  Two other funnel clouds were sighted in
        the same area.  The public sighted a tornado 15 miles
        east of Stapleton International Airport.  No damage was
        reported.
      In 2012...severe thunderstorms produced damaging hail ranging
        in size from quarters to golfballs in metro Denver
        including:  Aurora...Centenniel...Cherry Creek...Englewood...
        and southeast Denver. Aurora was hit the hardest...with
        extensive property damage reported to homes and automobiles.
5-6   In 1907...rain changed to snow on the 5th...continued through
        the night  into the 6th...and totaled 3.50 inches.  Northeast
        winds were sustained to 15 mph on the 5th.
      In 1917...post-frontal rain changed to heavy snow...from the
        5th to the 6th...and totaled 12.5 inches over downtown Denver.
        Most of the snow...12.0 inches...fell on the 5th and this was
        the greatest 24-hour snowfall ever measured during the month
        of May. This was also the only measurable snow of the month
        that year.  Low temperatures of 27 degrees on the 5th and 23
        degrees on the 6th were record minimums for the dates.
        High temperatures on both days were in the lower 40`s.
        Southeast winds were sustained to 24 mph with an extreme
        velocity to 26 mph.
      In 1964...from the 5th to the 6th...high winds gusted to 54 mph
        in Boulder and to 80 mph at Jefferson County Airport near
        Broomfield.  Wind gusts of 50 to 60 mph were common over all
        of eastern Colorado.  Buildings...power lines...trees...and
        vehicles were damaged by the wind.   South-southwest wind
        gusts to 54 mph caused some blowing dust at Stapleton
        International Airport where the visibility was briefly
        reduced to 2 miles.
      In 1973...from the 5th to the 6th...a heavy driving rain storm
        with embedded thunderstorms...produced 1 to 5 inches of rain
        and caused local flash flooding along the east slopes of
        the Front Range.  The greatest flash flooding occurred in
        metro Denver where rainfall totaled 3.56 inches at Stapleton
        International Airport.  Flooding in metro Denver occurred
        on Clear Creek and the South Platte River...already swollen
        from heavy snowmelt.  Numerous basements were flooded...
        roads and streets were washed out...a bridge was demolished...
        and miscellaneous other damage was reported.  North winds
        gusted to 39 mph at Stapleton International Airport during
        the storm.  The storm produced major downstream flooding
        along the South Platte River all the way to the Nebraska
        border during the next two weeks.  One person died and
        total damage was estimated at around 120 million dollars.
      In 1978...from the 5th to the 6th...heavy wet snow of around
        24 inches collapsed an office and hotel building in
        Boulder.  Many cars were abandoned in the city.  Denver
        received 14 inches of heavy wet snow with Evergreen and
        Golden reporting 12 inches.  Snowfall totaled 12.4 inches
        at Stapleton International Airport with a total accumulation
        of snow on the ground of 8 inches due to melting.  Southeast
        winds gusted to 23 mph on the 5th.  Temperatures both days
        remained in the lower to mid 30`s.

$$