Current Watches and Warnings
Colorado, Grand and Summit Counties Below 9000 Feet
Public Information Statement
Statement as of 2:59 AM MDT on September 20, 2014
... Today in Metro Denver weather history...
20 in 1921... an apparent bora produced northwest winds sustained
to 44 mph with gusts to 64 mph.
In 1955... hail stones 1/2 to 3/4 inch in diameter were
reported across parts of the city of Denver.
In 1992... weather observers at Buckley Air National Guard Base
sighted two tornados southeast of the base. The tornados
were short-lived and caused no injuries or damage.
20-21 in 1963... heavy rain and hail caused local flooding in
southeast Denver. Thunderstorm rainfall was only
0.60 inch at Stapleton Airport on the 20th.
In 1983... the cold front on the 19th brought an unusually cold
air mass into Metro Denver for so early in the season. The
temperature dipped to a daily record minimum of 28 degrees
on both days.
In 1995... a vigorous late Summer storm brought the season's
first heavy snow to portions of Metro Denver. Millions
of trees were damaged and power lines downed as 4 to 8
inches of heavy wet snow settled on fully leafed trees in
the Boulder and Denver areas. Branches snapped and trees
split under the weight of heavy snow... Downing power lines.
Firefighters responded to numerous transformer fires.
Around 100 thousand people were left without electricity
in Boulder and Denver areas alone. It took over a week
to fully restore power to some areas. Insurance claims
were estimated to be around 6 million dollars to homes
in Metro Denver and about 500 thousand dollars in damage
to automobiles. It was estimated that about 80 percent
of 125 million dollars Worth of city owned trees in Denver
were damaged. Snowfall totaled 7.4 inches at the site of
the former Stapleton International Airport where the
greatest depth of snow on the ground was only 4 inches
due to melting. Temperature records were set on the
21st when the thermometer dipped to a record low reading
of 27 degrees and climbed to a high of only 36 degrees...
setting a record low maximum for the date. North winds
gusted to 29 mph at Denver International Airport on the
20-22 in 1902... a thunderstorm on the 20th... in advance of an
apparent cold front... produced rain... hail... and northwest
winds to 40 mph with gusts to 48 mph. Widespread rain
developed behind the cold front and totaled 3.21 inches
from the evening of the 20th through the early afternoon
of the 22nd. The 2.70 inches of precipitation recorded
from 800 PM on the 20th to 800 PM on the 21st is the
greatest 24 hour precipitation ever recorded in the
month of September. The temperature dipped from a high
of 80 degrees on the 20th to a high of only 51 degrees
on the 21st.
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