949  
WWUS85 KVEF 122048  
RFWVEF  
 
URGENT - FIRE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE LAS VEGAS NV  
148 PM PDT MON APR 12 2021  
 
A LOW PRESSURE SYSTEM WILL MOVE ACROSS THE GREAT BASIN TUESDAY,  
BRINGING STRONG WEST TO SOUTHWEST WINDS ACROSS THE REGION. THESE  
WINDS COUPLED WITH LOW RELATIVE HUMIDITY WILL BRING CRITICAL FIRE  
WEATHER CONDITIONS TO MUCH OF THE AREA ON TUESDAY.  
 
CAZ229-NVZ461-122200-  
/O.CAN.KVEF.FW.A.0003.210413T1800Z-210414T0500Z/  
LOWER COLORADO RIVER VALLEY-LINCOLN COUNTY/ELY DISPATCH-  
148 PM PDT MON APR 12 2021  
 
...FIRE WEATHER WATCH IS CANCELLED FOR FIRE WEATHER ZONES 229 AND  
461...  
 
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS CANCELLED THE FIRE  
WEATHER WATCH.  
 
WINDS FOR FWZ 229 AND 461 WILL REMAIN BELOW CRITICAL LEVELS TO THE  
FIRE WEATHER WATCH HAS BEEN CANCELED. HOWEVER, RH WILL STILL BE  
VERY LOW AND WIND WILL GUST TO NEAR 25 MPH, SO SOME LEVEL OF  
ENHANCED FIRE GROWTH WILL BE POSSIBLE SHOULD THERE BE STARTS.  
 

 
 
CAZ226>228-131200-  
/O.UPG.KVEF.FW.A.0003.210413T1800Z-210414T0500Z/  
/O.NEW.KVEF.FW.W.0003.210413T1800Z-210414T0500Z/  
OWENS VALLEY/SOUTHERN INYO FOREST-DEATH VALLEY NATIONAL PARK-  
MOJAVE DESERT INCLUDING MORONGO VALLEY/YUCCA VALLEY-  
148 PM PDT MON APR 12 2021  
 
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 10 PM PDT TUESDAY FOR  
WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONES 226, 227, AND 228...  
 
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A RED FLAG  
WARNING, WHICH IS IN EFFECT FROM 11 AM TO 10 PM PDT TUESDAY. THE  
FIRE WEATHER WATCH IS NO LONGER IN EFFECT.  
 
* TIMING...11 AM TO 10 PM TUESDAY.  
 
* WIND...WEST WIND 20 TO 30 MPH WITH GUSTS UP TO 50 MPH.  
 
* HUMIDITY...6 TO 15 PERCENT.  
 
* IMPACTS...ANY FIRES THAT START WILL LIKELY SPREAD RAPIDLY DUE TO  
STRONG WINDS AND VERY DRY CONDITIONS. OUTDOOR BURNING IS HIGHLY  
DISCOURAGED. THE MAIN THREAT FOR SAN BERNARDINO COUNTY IS IN THE  
WESTERN AND NORTHERN PORTIONS OF THE COUNTY.  
 
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.  
 

 
 

 
 
AZZ101-102-NVZ460-462>466-131200-  
/O.UPG.KVEF.FW.A.0003.210413T1800Z-210414T0500Z/  
/O.NEW.KVEF.FW.W.0003.210413T1800Z-210414T0500Z/  
LAKE MEAD NRA/COLORADO RIVER-AZ SIDE-  
NORTHWEST DESERTS/NORTHWEST PLATEAU-  
ESMERALDA AND NYE COUNTY DESERTS/CNC DISPATCH-  
NYE COUNTY DESERTS/LAS VEGAS DISPATCH-SHEEP RANGE-  
SPRING MOUNTAINS-  
CLARK AND SW LINCOLN COUNTY DESERTS/LAS VEGAS DISPATCH-  
LAKE MEAD NRA/COLORADO RIVER-NV SIDE-  
148 PM PDT MON APR 12 2021 /148 PM MST MON APR 12 2021/  
 
...RED FLAG WARNING IN EFFECT FROM 11 AM PDT /11 AM MST/ TO 10 PM  
PDT /10 PM MST/ TUESDAY FOR WIND AND LOW HUMIDITY FOR FIRE  
WEATHER ZONES 101, 102, 460, 462, 463, 464, 465, AND 466...  
 
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A RED FLAG  
WARNING, WHICH IS IN EFFECT FROM 11 AM PDT /11 AM MST/ TO 10 PM  
PDT /10 PM MST/ TUESDAY. THE FIRE WEATHER WATCH IS NO LONGER IN  
EFFECT.  
 
* TIMING...11 AM TO 10 PM TUESDAY.  
 
* WIND...SOUTHWEST TO WEST 20 TO 30 MPH GUSTS UP TO 50 MPH.  
 
* HUMIDITY...7 TO 15 PERCENT.  
 
* IMPACTS...ANY FIRES THAT START WILL LIKELY SPREAD RAPIDLY DUE  
TO STRONG WINDS AND VERY DRY CONDITIONS. OUTDOOR BURNING IS  
HIGHLY DISCOURAGED.  
 
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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