weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

2 products issued by NWS for:
Share |


Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
401 AM MDT Tue Sep 19 2017

COZ030>051-201015-
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-
401 AM MDT Tue Sep 19 2017

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

.DAY ONE...Today and Tonight

Windy and very dry conditions will prevail ahead of a cold front.
Wind gusts up to 50 mph will occur over the higher terrain with
gusts to 30 mph over northeast Colorado. Critical to extreme fire
weather conditions will be in place over parts of north central
and northeast Colorado this afternoon into the early evening
hours. There will be a chance of showers in the mountains late
this afternoon and evening mainly near the Wyoming border.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

It will remain dry Wednesday, Thursday and into Friday.
Temperatures will remain above normals so elevated fire danger is
possible. Moisture will increase later Friday and a cold front is
expected Friday night. Temperatures will be below seasonal
normals Saturday through Monday with a chance of precipitation,
especially over the mountains.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$



Red Flag Warning

URGENT - FIRE WEATHER MESSAGE
National Weather Service Denver/Boulder CO
236 AM MDT Tue Sep 19 2017

...Critical to Extreme Fire Weather Conditions this afternoon into
the early evening hours...

.West to southwest winds will increase ahead of a cold front.
Gusts to 50 mph will be possible over the higher terrain with
gusts from 30 to 40 mph at lower elevations. These winds combined
with relative humidity values of 8 to 15 percent will result in
extreme fire weather conditions in places. Winds are expected to
shift to the north this evening as a cold front pushes through.
Relative humidities are expected to rapidly improve behind the
cold front.

COZ239-240-242>245-248>251-191645-
/O.UPG.KBOU.FW.A.0021.170919T1700Z-170920T0200Z/
/O.EXA.KBOU.FW.W.0024.170919T1700Z-170920T0200Z/
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-Northeast Weld County-
Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-Logan County-
Washington County-Sedgwick County-Phillips County-
236 AM MDT Tue Sep 19 2017

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MDT
THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST
PLAINS OF COLORADO...

The National Weather Service in Denver has issued a Red Flag
Warning FOR WIND AND LOW RELATIVE HUMIDITY...which is in effect
from 11 AM this morning to 8 PM MDT this evening. The Fire
Weather Watch is no longer in effect.

* Affected Area...Fire Weather Zones 239...240...242...243...
  244...245...248...249...250 and 251.

* Timing...11 AM to 8 PM MDT Tuesday.

* Winds...Southwest 10 to 20 mph with gusts up to 30 mph.

* Relative Humidity...as low as 8 percent.

* Impacts...Gusty winds and low relative humidity will result in
  critical fire weather conditions.

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.

&&

$$



U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE