West Jackson and West Grand Counties Above 9000 Feet Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Fire Weather Warning
Issued: 2:36 AM MDT Sep. 19, 2017 – National Weather Service

... Red flag warning remains in effect from 11 am this morning to
8 PM MDT this evening for wind and low relative humidity for
the north central mountains, foothills, South Park and the Palmer
Divide...

* affected area... fire weather zones 212... 213... 214... 215...
216... 238... 241... 246 and 247.

* Timing... Tuesday. 11 am through 8 PM.

* Winds... southwest 20 to 30 mph with gusts up to 50 mph.

* Relative humidity... as low as 10 percent.

* Impacts... gusty winds and low relative humidity will result in
critical fire weather conditions. Very windy conditions with
relative humidities around 10 percent may result in extreme fire
weather conditions for areas in and near the foothills and over
the Palmer Divide.

Precautionary/preparedness actions...

A red flag warning means that critical fire weather conditions
are either occurring now... .or will shortly. A combination of
strong winds... low relative humidity... and warm temperatures can
contribute to extreme fire behavior.




Public Information Statement
Issued: 2:59 AM MDT Sep. 19, 2017 – National Weather Service
 
... Today in Metro Denver weather history...

15-19 in 1906... rain on 5 consecutive days totaled 1.61 inches.
        A thunderstorm occurred on the 17th. High temperatures
        ranged from 48 degrees on the 16th to 65 degrees on the
        15th. Low temperatures were in the lower to mid 40's.
16-19 in 1971... a record breaking early fall snow storm caused
        extensive damage to trees and utility lines. The heavy wet
        snow occurred with little wind... but caused record breaking
        cold temperatures for so early in the season. Snowfall
        totaled 15.6 inches at Stapleton International Airport
        with most of the snowfall... 12.0 inches... occurring on the
        17th. This was the heaviest first snow of the season.
        The maximum snow depth on the ground was 13 inches.
        Record low temperatures were set on three consecutive days:
        31 degrees on the 17th... 23 degrees on the 18th... and 20
        degrees on the 19th... which was also a new all-time record
        minimum for the month at that time. Record low maximum
        temperatures were set on 4 consecutive days: 48 degrees
        on the 16th... 35 degrees on the 17th... 40 degrees on the 18th...
        and 42 degrees on the 19th.
18-19 in 1955... heavy rains caused flash flooding across portions of
        Metro Denver. Rainfall totaled 1.71 inches at Stapleton
        Airport.
19 in 1955... hail stones to 2 1/2 inches in diameter were
        reported north of Denver. The large stones broke many
        automobile windshields.
      In 1963... hail to 3/4 inch in diameter fell in Westminster.
      In 1983... an unusually strong cold front roared through
        Metro Denver during the afternoon hours. At Stapleton
        International Airport... the temperature dropped 51 degrees...
        from a sunny 86 degrees to a snowy 35 degrees... in just 7
        hours. Strong winds and a wall of blowing dust followed
        the front. Northeast winds gusting to 36 mph briefly
        reduced the surface visibility to 1 mile in blowing dust
        at Stapleton International Airport where only a trace of
        snow fell later.
      In 1996... high winds gusting to 84 mph were measured at
        Golden Gate Canyon in the foothills west of Denver.
        West winds gusted to only 25 mph at Denver International
        Airport.



259 am MDT Tue Sep 19 2017

... Today in Metro Denver weather history...

15-19 in 1906... rain on 5 consecutive days totaled 1.61 inches.
        A thunderstorm occurred on the 17th. High temperatures
        ranged from 48 degrees on the 16th to 65 degrees on the
        15th. Low temperatures were in the lower to mid 40's.
16-19 in 1971... a record breaking early fall snow storm caused
        extensive damage to trees and utility lines. The heavy wet
        snow occurred with little wind... but caused record breaking
        cold temperatures for so early in the season. Snowfall
        totaled 15.6 inches at Stapleton International Airport
        with most of the snowfall... 12.0 inches... occurring on the
        17th. This was the heaviest first snow of the season.
        The maximum snow depth on the ground was 13 inches.
        Record low temperatures were set on three consecutive days:
        31 degrees on the 17th... 23 degrees on the 18th... and 20
        degrees on the 19th... which was also a new all-time record
        minimum for the month at that time. Record low maximum
        temperatures were set on 4 consecutive days: 48 degrees
        on the 16th... 35 degrees on the 17th... 40 degrees on the 18th...
        and 42 degrees on the 19th.
18-19 in 1955... heavy rains caused flash flooding across portions of
        Metro Denver. Rainfall totaled 1.71 inches at Stapleton
        Airport.
19 in 1955... hail stones to 2 1/2 inches in diameter were
        reported north of Denver. The large stones broke many
        automobile windshields.
      In 1963... hail to 3/4 inch in diameter fell in Westminster.
      In 1983... an unusually strong cold front roared through
        Metro Denver during the afternoon hours. At Stapleton
        International Airport... the temperature dropped 51 degrees...
        from a sunny 86 degrees to a snowy 35 degrees... in just 7
        hours. Strong winds and a wall of blowing dust followed
        the front. Northeast winds gusting to 36 mph briefly
        reduced the surface visibility to 1 mile in blowing dust
        at Stapleton International Airport where only a trace of
        snow fell later.
      In 1996... high winds gusting to 84 mph were measured at
        Golden Gate Canyon in the foothills west of Denver.
        West winds gusted to only 25 mph at Denver International
        Airport.


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