138  
WWUS85 KCYS 180911  
RFWCYS  
 
URGENT - FIRE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE CHEYENNE WY  
311 AM MDT TUE SEP 18 2018  
   
..RED FLAG WARNING FOR FWZ 303
 
304 AND 306 FOR GUSTY SOUTHWEST  
WINDS AND LOW HUMIDITY THIS AFTERNOON AND EARLY EVENING...  
   
..FIRE WEATHER WATCH FOR FWZ 303
 
304 AND 306 FOR CONTINUED  
GUSTY WINDS AND LOW HUMIDITY WEDNESDAY...  
 
WYZ303-304-306-190200-  
/O.CON.KCYS.FW.W.0035.180918T1800Z-180919T0200Z/  
/O.CON.KCYS.FW.A.0024.180919T1800Z-180920T0200Z/  
CENTRAL AND NORTHERN CARBON/FERRIS-SEMINOE-SHIRLEY MOUNTAINS-  
SOUTHWEST CARBON COUNTY-UPPER NORTH PLATTE RIVER BASIN-  
311 AM MDT TUE SEP 18 2018  
 
...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM MDT  
THIS EVENING FOR GUSTY WIND AND LOW HUMIDITY FOR FIRE WEATHER  
ZONES 303, 304, AND 306...  
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON  
THROUGH WEDNESDAY EVENING FOR GUSTY WIND AND LOW HUMIDITY FOR  
FIRE WEATHER ZONES 303, 304, AND 306...  
 
* AFFECTED AREA...FIRE WEATHER ZONE 303.FIRE WEATHER ZONE  
304.FIRE WEATHER ZONE 306.  
 
* WIND...SOUTHWEST WINDS OF 20 TO 25 MPH SUSTAINED WITH GUSTS TO  
35 MPH EXPECTED TODAY AND POSSIBLY AGAIN ON WEDNESDAY.  
 
* HUMIDITY...8 TO 15 PERCENT TO OCCUR EACH AFTERNOON WITH POOR  
OVERNIGHT RECOVERIES.  
 
* 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  
STRONG 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.  
 

 
 

 
 
RUBIN  
 
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