999  
WWUS86 KSGX 202135  
RFWSGX  
 
URGENT - FIRE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE SAN DIEGO CA  
135 PM PST MON JAN 20 2025  
 
CAZ250-255>258-265-210630-  
/O.NEW.KSGX.FW.A.0005.250123T0200Z-250124T0200Z/  
/O.CON.KSGX.FW.W.0003.000000T0000Z-250122T0600Z/  
SAN DIEGO COUNTY INLAND VALLEYS-SAN BERNARDINO COUNTY MOUNTAINS-  
INCLUDING THE MOUNTAIN TOP AND FRONT COUNTRY RANGER DISTRICTS OF  
THE SAN BERNARDINO NATIONAL FOREST-RIVERSIDE COUNTY MOUNTAINS-  
INCLUDING THE SAN JACINTO RANGER DISTRICT OF THE SAN BERNARDINO  
NATIONAL FOREST-SANTA ANA MOUNTAINS-  
INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL  
FOREST-SAN DIEGO COUNTY MOUNTAINS-  
INCLUDING THE PALOMAR AND DESCANSO RANGER DISTRICTS OF THE  
CLEVELAND NATIONAL FOREST-SAN GORGONIO PASS NEAR BANNING-  
135 PM PST MON JAN 20 2025  
 
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PST TUESDAY FOR  
STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR ALL MOUNTAINS AND  
THE SAN DIEGO COUNTY VALLEYS...  
 
...FIRE WEATHER WATCH NOW IN EFFECT FROM WEDNESDAY EVENING  
THROUGH THURSDAY AFTERNOON FOR STRONG GUSTY WINDS AND LOW RELATIVE  
HUMIDITY FOR ALL MOUNTAINS AND THE SAN DIEGO COUNTY VALLEYS...  
 
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A FIRE  
WEATHER WATCH FOR STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITY,  
WHICH IS IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY  
AFTERNOON.  
 
* RED FLAG WARNING WINDS...NORTHEAST 25 TO 35 MPH WITH GUSTS UP TO  
60 MPH. ISOLATED GUSTS IN EXCESS OF 80 MPH ON THE FAVORED  
COASTAL SLOPES AND CANYONS.  
 
* FIRE WEATHER WATCH WINDS...NORTHEAST 20 TO 30 WITH GUSTS UP TO  
55 MPH, HIGHEST WINDS ON THURSDAY MORNING AND AFTERNOON.  
 
* RELATIVE HUMIDITY...AS LOW AS 4 PERCENT TUESDAY AND THURSDAY.  
 
* IMPACTS...IF FIRE IGNITION OCCURS, CONDITIONS ARE FAVORABLE  
FOR RAPID FIRE SPREAD AND EXTREME FIRE BEHAVIOR.  
 
* LOCATION...SAN DIEGO COUNTY INLAND VALLEYS, SAN BERNARDINO  
COUNTY MOUNTAINS-INCLUDING THE MOUNTAIN TOP AND FRONT COUNTRY  
RANGER DISTRICTS OF THE SAN BERNARDINO NATIONAL FOREST,  
RIVERSIDE COUNTY MOUNTAINS-INCLUDING THE SAN JACINTO RANGER  
DISTRICT OF THE SAN BERNARDINO NATIONAL FOREST, SANTA ANA  
MOUNTAINS-INCLUDING THE TRABUCO RANGER DISTRICT OF THE  
CLEVELAND NATIONAL FOREST, SAN DIEGO COUNTY MOUNTAINS-  
INCLUDING THE PALOMAR AND DESCANSO RANGER DISTRICTS OF THE  
CLEVELAND NATIONAL FOREST AND SAN GORGONIO PASS NEAR BANNING.  
 
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  
ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE  
RED FLAG WARNINGS.  
 

 
 

 
 
CAZ248-554-210630-  
/O.CON.KSGX.FW.W.0003.000000T0000Z-250122T0600Z/  
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS - THE INLAND EMPIRE-  
ORANGE COUNTY INLAND AREAS-  
135 PM PST MON JAN 20 2025  
 
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PST TUESDAY FOR  
STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR SAN BERNARDINO  
AND RIVERSIDE COUNTY VALLEYS - THE INLAND EMPIRE AND ORANGE COUNTY  
INLAND AREAS...  
 
* WINDS...NORTHEAST 25 TO 35 MPH WITH GUSTS UP TO 60 MPH. ISOLATED  
GUSTS IN EXCESS OF 75 MPH ON THE FAVORED COASTAL SLOPES AND  
CANYONS.  
 
* RELATIVE HUMIDITY...AS LOW AS 5 PERCENT.  
 
* IMPACTS...IF FIRE IGNITION OCCURS, CONDITIONS ARE FAVORABLE  
FOR RAPID FIRE SPREAD AND EXTREME FIRE BEHAVIOR.  
 
* LOCATION...SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE  
INLAND EMPIRE AND ORANGE COUNTY INLAND AREAS.  
 
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.  
 

 
 

 
 
HTTP://WWW.WEATHER.GOV/SANDIEGO  
 
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