809  
WWUS85 KCYS 090733  
RFWCYS  
 
URGENT - FIRE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE CHEYENNE WY  
133 AM MDT SUN AUG 9 2020  
 
...CRITICAL FIRE WEATHER CONDITIONS TODAY AND MONDAY ALONG AND  
WEST OF THE LARAMIE RANGE...  
 
WYZ302-309-100000-  
/O.EXA.KCYS.FW.W.0020.200809T1500Z-200810T0200Z/  
NORTH LARAMIE RANGE/MEDICINE BOW NF-  
SOUTH LARAMIE RANGE/MEDICINE BOW NF-  
133 AM MDT SUN AUG 9 2020  
 
...RED FLAG WARNING IN EFFECT FROM 9 AM THIS MORNING TO 8 PM MDT  
THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER  
ZONES 302 AND 309...  
 
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A RED FLAG  
WARNING, WHICH IS IN EFFECT FROM 9 AM THIS MORNING TO 8 PM MDT  
THIS EVENING.  
 
* AFFECTED AREA...FIRE WEATHER ZONES 302 AND 309.  
 
* WIND...WEST TO SOUTHWEST 15 TO 20 MPH SUSTAINED WITH GUSTS TO  
30 MPH.  
 
* HUMIDITY...8 TO 12 PERCENT THIS AFTERNOON.  
 
* HAINES...6.  
 
* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.  
OUTDOOR BURNING IS NOT RECOMMENDED.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF  
GUSTY WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN  
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.  
 

 
 

 
 
WYZ303>308-100000-  
/O.NEW.KCYS.FW.A.0016.200810T1600Z-200811T0200Z/  
/O.CON.KCYS.FW.W.0020.200809T1500Z-200810T0200Z/  
CENTRAL AND NORTHERN CARBON/FERRIS-SEMINOE-SHIRLEY MOUNTAINS-  
SOUTHWEST CARBON COUNTY-SIERRA MADRE RANGE/MEDICINE BOW NF-  
UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE/MEDICINE BOW NF-  
LARAMIE VALLEY/SHIRLEY BASIN-  
133 AM MDT SUN AUG 9 2020  
 
...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO  
8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE  
WEATHER ZONES 303, 304, 305, 306, 307, AND 308...  
 
...FIRE WEATHER WATCH IN EFFECT FROM MONDAY MORNING THROUGH  
MONDAY EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER  
ZONES 303, 304, 305, 306, 307, AND 308...  
 
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A FIRE  
WEATHER WATCH, WHICH IS IN EFFECT FROM MONDAY MORNING THROUGH  
MONDAY EVENING.  
 
* AFFECTED AREA...FIRE WEATHER ZONES 303 THROUGH 308.  
 
* WIND...WEST TO SOUTHWEST 15 TO 20 MPH SUSTAINED WITH GUSTS TO  
30 MPH. SIMILAR WINDS EXPECTED MONDAY.  
 
* HUMIDITY...8 TO 12 PERCENT THIS AFTERNOON WITH SIMILAR HUMIDITY  
EXPECTED MONDAY.  
 
* HAINES...6.  
 
* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.  
OUTDOOR BURNING IS NOT RECOMMENDED.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF  
GUSTY WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN  
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.  
 
A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  
MAY DEVELOP. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG  
WARNINGS.  
 

 
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab WY Page
The Nexlab NE Page Main Text Page