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Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1051 AM MDT Wed Oct 21 2020

COZ030>051-221700-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1051 AM MDT Wed Oct 21 2020

...CRITICAL FIRE WEATHER CONDITIONS THIS AFTERNOON FOR THE HIGH
MOUNTAIN VALLEYS AND FRONT RANGE FOOTHILLS, CONTINUING THROUGH THE
NIGHT ALONG THE FOOTHILLS...

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

A warm and dry day today will mix with gusty winds in the higher
elevations to bring another day of very high fire danger. Wind
gusts of 30 to 40 mph will be common this afternoon, and the
higher mountains will have gusts to 50 mph. The winds will
diminish in the mountain valleys this evening, but will remain
windy with low humidity in the foothills overnight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Warm, breezy, and dry conditions will persist over the mountains
and mountain valleys through Saturday, bringing continuation of
elevated fire weather concerns. Meanwhile, a cold front will
bring colder temperatures and higher relative humidities to the
Front Range and eastern plains Thursday and continues into
Saturday.

A storm system is still on track to move across the Central
Rockies this weekend. This system will bring a good chance for
snow Saturday night and Sunday along with cold temperatures.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today and tonight.

$$

COC049-221500-
Grand-
910 AM MDT Wed Oct 21 2020

...AIR QUALITY HEALTH ADVISORY FOR WILDFIRE SMOKE FROM 900 AM
WEDNESDAY UNTIL 900 AM THURSDAY...

The Colorado Department of Public Health and Environment has
issued the following...

WHAT...Air Quality Health Advisory for Wildfire Smoke.

WHERE...Grand County. Locations include, but are not limited to
Grand Lake, Granby, Hot Sulphur Springs, and Parshall.

WHEN...900 AM Wednesday October 21 to 900 AM Thursday October 22

IMPACTS...Moderate to heavy smoke has been observed Wednesday
morning near the East Troublesome wildfire in northern Grand
County, including locations south of the fire along US Highway 40
in Granby, Hot Sulphur Springs, and Parshall. Smoke will gradually
decrease late Wednesday morning for these areas, however gusty
west to southwesterly winds Wednesday afternoon will create active
fire behavior and produce additional smoke. The wind will send
this smoke to areas east and northeast of the fire, possibly
impacting Grand Lake with periods of moderate to heavy smoke. The
wind will stay mainly out of the southwest Wednesday night,
continuing smoke impacts through early Thursday morning to lower
lying areas east and northeast of the fire, including State
Highway 125 to the north of Granby.

HEALTH INFORMATION...Public Health Recommendations: If smoke is
thick or becomes thick in your neighborhood you may want to remain
indoors. This is especially true for those with heart disease,
respiratory illnesses, the very young, and the elderly. Consider
limiting outdoor activity when moderate to heavy smoke is present.
Consider relocating temporarily if smoke is present indoors and is
making you ill. If visibility is less than 5 miles in smoke in
your neighborhood, smoke has reached levels that are unhealthy.

$$

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
138 AM MDT Wed Oct 21 2020

...RED FLAG WARNING FOR THE MOUNTAIN VALLEYS THIS AFTERNOON AND
EVENING FOR LOW HUMIDITY AND GUSTY WINDS...
...RED FLAG WARNING FOR THE FRONT RANGE FOOTHILLS THIS AFTERNOON
AND TONIGHT FOR LOW HUMIDITY...GUSTY WINDS...AND POOR RECOVERY
OVERNIGHT...

.Winds will increase today ahead of a weather system that will
pass over Colorado on Thursday. It will also be a little warmer
and drier. As a result, Red Flag conditions are expected in the
mountain valleys and foothills this afternoon. Conditions will
improve in the valleys this evening, but the foothills will have
windy conditions continuing with poor humidity recovery. Overnight
maximum humidity in the foothills will be in the 20 to 30 percent
range while winds increase with gusts of up to 50 mph possible,
mainly in the higher foothills and wind prone lower foothill
locations. The foothills will see a shift to northeast winds with
cooler temperatures and higher humidities behind a cold front
Thursday morning. These winds may also gust up to 30 mph during
the day Thursday.

COZ213-214-211800-
/O.CON.KBOU.FW.W.0037.201021T1800Z-201022T0100Z/
Grand and Summit Counties Below 9000 Feet-
Central and Southeast Park County-
138 AM MDT Wed Oct 21 2020

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 7 PM MDT
THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MIDDLE PARK
AND SOUTH PARK...

* Affected Area...Fire Weather Zones 213 and 214.

* Timing...Noon to 7 PM MDT, Wednesday.

* Winds...West 15 to 25 mph with gusts up to 40 mph.

* Relative Humidity...As low as 12 percent.

* Impacts...Fires will start easily and spread rapidly.

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.

&&

$$

Hazard Report Provided By forecast.weather.gov

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