Public Information Statement
Issued by NWS Denver/Boulder, CO
NOUS45 KBOU 070959
Public Information Statement
National Weather Service Denver/Boulder CO
259 AM MST TUE FEB 7 2017
...Today in metro Denver weather history...
30-7 In 1985...a cold front on the 29th produced a protracted cold
spell as Arctic air remained entrenched across metro Denver.
While the only daily temperature record set was a low
maximum reading of 2 degrees on February 3rd...minimum
temperatures plunged well below zero on 9 consecutive days.
The coldest readings were 15 degrees below zero on January
31st and 14 degrees below zero on February 5th.
31-8 In 1963...warm weather that began with the strong chinook
winds on the 31st and 1st continued through the 8th.
Maximum temperatures through the period ranged from 52
degrees on the 2nd to 76 degrees on the 5th...which was
a new record high for that date.
31-12 In 1899...a protracted cold spell lasted almost two weeks.
Low temperatures plunged below zero on all days but
February 9th with a reading of 6 degrees. The coldest
low temperature of 22 degrees below zero on February 6th
was a record low for the date. Low temperatures of 20
degrees below zero occurred on both February 11th and 12th...
but only the 11th remains as the record minimum for the
date. High temperature of only 5 degrees below zero on
February 11th was a record low maximum for the date. High
temperatures climbed to only zero degrees on both February
2nd and 3rd...but were not records. Intermittent light snow
or flurries fell during the period. The most snowfall...2.0
inches...occurred on February 2nd.
1-9 In 1883...a protracted cold period occurred when low
temperatures dipped below zero for 9 consecutive days.
Low temperatures ranged from 22 degrees below zero on
the 4th to 2 degrees below zero on the 1st and 6th. High
temperatures ranged from 10 below zero on the 3rd to
23 on the 9th. Several temperature records were set
that still stand today. Record lows of 18 below and
22 below zero occurred on the 3rd and 4th. Record low
maximum readings of 2 below and 10 below zero occurred on
the 2nd and 3rd. The high of only 10 below zero on the
3rd is the coldest maximum temperature ever recorded in
5-11 In 1978...the 5th marked the start of a record 7 consecutive
days of dense fog at Stapleton International Airport. The
heavy fog reduced the visibility to 1/4 mile or less for a
period of time on each of these days. Light snow and/or
freezing drizzle occurred on most days. Fog reducing
visibility to less than 7 miles was recorded at Stapleton
International Airport on 11 consecutive days through the
15th. During the period 5-14...the cold thick fog deposited
heavy rime ice up to 5 inches thick on power lines and poles
over a wide area of eastern Colorado...causing a major
electrical power outage disaster.
6-7 In 1929...5.0 inches of snow fell in downtown Denver behind
a Canadian cold front. Temperatures plunged...but no records
were set. Low readings dipped to 3 degrees below zero on
the 6th and 9 degrees below zero on the 7th. Highs climbed
to 5 degrees on the 6th and to only 1 degree below zero on
In 1933...post-frontal light snowfall totaled 3.0 inches over
downtown Denver. Northeast winds were sustained to 28 mph
with gusts to 32 mph on the 6th. The very cold air mass
plunged temperatures from a high of 60 degrees on the 5th
to lows of 10 degrees below zero on the 6th and 16 degrees
below on the 7th. High temperature of only 4 degrees below
zero on the 7th was a record low maximum for the date.
6-10 In 1933...3:00 PM on the 6th marked the start of a protracted
cold period through 8:00 AM on the 10th when the temperature
was below zero for 86 out of 88 hours. The cold period was
interrupted on the 8th at 9:00 AM when the temperature was
1 degree above zero and at 10:00 AM when the temperature was
8 degrees above zero. Four temperature records were set.
High temperatures of 4 degrees below zero on the 7th...8
degrees on the 8th...and 5 degrees below zero on the 9th were
record low maximums for those dates. The only record low
temperature record was 14 degrees below zero on the 10th.
The lowest temperature reached during the period was 16
degrees below zero on both the 7th and 8th...which were not
7 In 1940...a distant thunderstorm was recorded. This was only
the second ever recorded in the city during February since
In 1976...strong chinook winds were reported along the
foothills with sustained winds at 46 mph and gusts to 69
mph at the National Center for Atmospheric Research in
Boulder. Wind gusts of 70 to 90 mph were recorded at other
locations in Boulder. Northwest winds gusted to 44 mph at
Stapleton International Airport.
In 1979...strong west winds gusted as high as 99 mph near
Boulder. The winds caused ground blizzards that closed
several highways around Boulder. Some cars were forced off
the road...and a truck was overturned. Wind gusts of 50 to
80 mph were common in and near the foothills. Northwest
winds gusted to 33 mph at Stapleton International Airport.
In 1988...a wind gust to 82 mph was clocked at Rollinsville in
the foothills southwest of Boulder.
In 1999...strong chinook winds developed in the foothills.
Peak wind reports included: 90 mph at the National
Center for Atmospheric Research Mesa Lab near Boulder and
88 mph at Wondervu in the foothills southwest of Boulder.
West to southwest winds gusted to only 48 mph at Denver
7-8 In 1936...a sharp blast of frigid Arctic air was of short
duration. At 11:00 AM on the 7th the temperature was
39 degrees...but dropped to only 1 degree within an hour.
A more gradual decrease occurred through the night to
a low temperature of 25 degrees below zero shortly after
6:00 AM on the 8th. This was the lowest temperature ever
recorded in February. (The record was equaled on February
1...1951.) Snowfall of 1.0 inch occurred in the cold air.
During the day on the 8th...northwest chinook winds from 12
to 16 mph...and as high as 21 mph warmed the temperature
to a high of 35 degrees at 7:00 PM. This was a rise in
temperature of 60 degrees in 13 hours. Unofficially...the
temperature dipped to a low of 30 degrees below zero at
Denver Municipal Airport on the morning of the 8th.
In 1956...5.5 inches of snow fell at Stapleton Airport where
east-northeast winds gusted to 23 mph on the 7th.
In 1980...an upslope storm dumped 4 to 10 inches of snow over
the plains and as much as 22 inches in the foothills.
Traffic was snarled and some schools were closed. Two
runways were closed for 3 hours at Stapleton International
Airport...where snowfall totaled 6.5 inches and north winds
gusted to 25 mph. Most of the snow fell on the 7th.