Red Flag Warning
Issued by NWS Denver/Boulder, CO

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000
WWUS85 KBOU 111903
RFWBOU

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
1203 PM MST Mon Dec 11 2017

...Red Flag Warning from 11 AM MST to 5 PM MST Today for Portions
of Northeast and East Central Colorado...

.Northerly winds will increase across the northeast plains of
Colorado today behind a fast moving dry cold front. Winds could
gust to 45 mph this afternoon particularly up along the Wyoming
and Nebraska borders and across Washington County where the
pressure gradient and winds aloft will be strongest. Minimum RH
values will be slightly higher today with the cooler temperatures.
However, the strong and gusty winds will be sufficient to produce
critical rangeland fire behavior for portions of northeast
Colorado roughly east of a Cheyenne-to- Limon line. Conditions
should quickly improve with sunset.

COZ238-242-244-246>251-120000-
/O.CON.KBOU.FW.W.0031.000000T0000Z-171212T0000Z/
Larimer County Below 6000 Feet/Northwest Weld County-
Northeast Weld County-Morgan County-
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-
1203 PM MST Mon Dec 11 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON FOR STRONG WINDS AND LOW RELATIVE HUMIDITY FOR THE
NORTHERN BORDER AREA AND EASTERN PLAINS...

* Affected Area...Fire Weather Zones 238...242...244...246...
  247...248...249...250 and 251.

* Timing...Winds will continue to gust up to 40 mph with some
  areas seeing winds as high as 45 mph at times. Humidities will
  be slightly higher today, but still low enough to support
  critical fire behavior. Conditions will quickly improve by
  sunset.

* Winds...North 20 to 30 mph with gusts up to 45 mph.

* Relative Humidity...As low as 13 percent.

* Impacts...Gusty winds and low humidity will be favorable for
  rapid fire spread especially in open rangeland.

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.

&&

$$



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