189  
WWUS86 KLOX 211731  
RFWLOX  
 
URGENT - FIRE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA  
1031 AM PDT SAT OCT 21 2017  
 
...RED FLAG WARNING IN EFFECT UNTIL 10 AM PDT SUNDAY FOR THE SANTA BARBARA  
COUNTY MOUNTAINS DUE TO GUSTY NORTH TO NORTHEAST WINDS AND LOW HUMIDITIES...  
 
...RED FLAG WARNING IN EFFECT UNTIL 6 PM PDT TUESDAY FOR THE LOS ANGELES  
AND VENTURA COUNTY MOUNTAINS AND SANTA CLARITA VALLEY DUE TO GUSTY  
NORTHEAST WINDS AND LOW HUMIDITIES...  
 
...RED FLAG WARNING IN EFFECT FROM 6 AM PDT SUNDAY UNTIL 6 PM PDT TUESDAY  
FOR REMAINING COASTAL AND VALLEY AREAS OF LOS ANGELES AND VENTURA COUNTIES  
DUE TO GUSTY NORTHEAST WINDS AND LOW HUMIDITIES...  
 
.GUSTY NORTH TO NORTHEAST WINDS WILL COMBINE WITH LOWERING  
HUMIDITIES TO BRING CRITICAL FIRE WEATHER CONDITIONS TO THE  
MOUNTAINS AND SANTA CLARITA VALLEY TODAY INTO TONIGHT.  
 
AS THE FLOW TURNS MORE NORTHEAST SUNDAY THROUGH TUESDAY, THERE  
WILL BE A SIGNIFICANT WARMING AND DRYING TREND ACROSS ALL OF  
SOUTHWEST CALIFORNIA, WITH CRITICAL FIRE WEATHER CONDITIONS LIKELY  
EXTENDING INTO THE VALLEY AND COASTAL AREAS OF LOS ANGELES AND  
VENTURA COUNTIES. THE MOST CRITICAL FIRE WEATHER CONDITIONS ARE  
EXPECTED MONDAY THROUGH TUESDAY, WHEN THERE WILL BE A COMBINATION  
OF SANTA ANA WINDS GUSTING TO BETWEEN 40 AND 55 MPH, RECORD  
BREAKING TRIPLE DIGIT HEAT, HUMIDITIES LOWERING INTO THE SINGLE  
DIGITS, AND VERY DRY FUELS. IN ADDITION, VERY WARM AND DRY  
CONDITIONS DURING THE OVERNIGHT HOURS IN THE MOUNTAINS, FOOTHILLS,  
AND WIND PRONE AREAS WILL ADD TO THIS FIRE WEATHER THREAT DURING  
THIS LONG DURATION OF DANGEROUS FIRE WEATHER CONDITIONS. IF FIRE  
IGNITION OCCURS, THERE WILL BE THE POTENTIAL FOR VERY RAPID SPREAD  
OF WILDFIRE WITH LONG RANGE SPOTTING AND EXTREME FIRE BEHAVIOR  
THAT COULD LEAD TO A THREAT TO LIFE AND PROPERTY.  
 
CAZ244>246-212315-  
/O.UPG.KLOX.FW.A.0008.171022T1300Z-171025T0100Z/  
/O.EXB.KLOX.FW.W.0008.171022T1300Z-171025T0100Z/  
VENTURA COUNTY INTERIOR VALLEYS-VENTURA COUNTY COASTAL VALLEYS-  
SANTA MONICA MOUNTAINS RECREATIONAL AREA-  
1031 AM PDT SAT OCT 21 2017  
 
...RED FLAG WARNING IN EFFECT FROM 6 AM SUNDAY TO 6 PM PDT TUESDAY  
FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR THE  
VENTURA COUNTY VALLEYS AND SANTA MONICA MOUNTAINS...  
 
THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A  
RED FLAG WARNING FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE  
HUMIDITY...WHICH IS IN EFFECT FROM SUNDAY MORNING THROUGH TUESDAY  
AFTERNOON.  
 
* WINDS...AREAS OF NORTH TO NORTHEAST WINDS 15 TO 25 MPH WITH  
GUSTS 30 TO 40 MPH ON SUNDAY...INCREASING TO 15 TO 30 MPH WITH  
GUSTS 35 TO 45 MPH MONDAY THROUGH TUESDAY. ISOLATED GUSTS TO 45  
MPH SUNDAY ACROSS THE WESTERN PORTIONS OF THE SANTA MONICAS AND  
EASTERN FOOTHILLS OF VENTURA COUNTY...INCREASING TO 50 MPH ON  
MONDAY AND TUESDAY.  
 
* RELATIVE HUMIDITY...MINIMUM VALUES 8 TO 15 PERCENT ON SUNDAY,  
LOWERING TO BETWEEN 5 AND 12 PERCENT MONDAY THROUGH TUESDAY.  
VERY POOR HUMIDITY RECOVERIES EXPECTED EACH NIGHT IN THE  
FOOTHILLS AND WIND PRONE AREAS.  
 
* TEMPERATURES...MAX TEMPERATURES 88 TO 96 DEGREES ON SUNDAY,  
RISING TO BETWEEN 95 AND 102 DEGREES MONDAY INTO TUESDAY. VERY  
WARM OVERNIGHT LOW TEMPERATURES IN THE FOOTHILLS AND WIND PRONE  
AREAS...REMAINING 75 TO 80 DEGREES IN WARMEST LOCATIONS.  
 
* IMPACTS...IF FIRE IGNITION OCCURS, THERE WILL BE THE POTENTIAL  
FOR VERY RAPID SPREAD OF WILDFIRE WITH LONG RANGE SPOTTING AND  
EXTREME FIRE BEHAVIOR THAT COULD LEAD TO A THREAT TO LIFE AND  
PROPERTY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  
ARE EXPECTED. A COMBINATION OF GUSTY WINDS...LOW RELATIVE  
HUMIDITY...AND HOT TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE  
BEHAVIOR. USE EXTREME CAUTION WHEN USING POTENTIAL FIRE IGNITION  
SOURCES.  
 

 
 

 
 
CAZ547-212315-  
/O.UPG.KLOX.FW.A.0008.171022T1300Z-171025T0100Z/  
/O.EXB.KLOX.FW.W.0008.171022T1300Z-171025T0100Z/  
LOS ANGELES COUNTY SAN FERNANDO VALLEY-  
1031 AM PDT SAT OCT 21 2017  
 
...RED FLAG WARNING IN EFFECT FROM 6 AM SUNDAY TO 6 PM PDT TUESDAY  
FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR THE  
SAN FERNANDO VALLEY...  
 
THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A  
RED FLAG WARNING FOR GUSTY NORTH TO NORTHEAST WINDS AND LOW  
RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM SUNDAY MORNING THROUGH  
TUESDAY AFTERNOON.  
 
* WINDS...AREAS OF NORTH TO NORTHEAST WINDS 15 TO 25 MPH WITH  
GUSTS TO 35 MPH ON SUNDAY...INCREASING TO 15 TO 30 MPH WITH  
GUSTS 35 TO 45 MPH MONDAY THROUGH TUESDAY. STRONGEST WINDS  
WESTERN AND NORTHERN PORTIONS.  
 
* RELATIVE HUMIDITY...MINIMUM VALUES 8 TO 15 PERCENT ON SUNDAY,  
LOWERING TO BETWEEN 5 AND 12 PERCENT MONDAY THROUGH TUESDAY.  
VERY POOR HUMIDITY RECOVERIES EXPECTED EACH NIGHT IN THE  
FOOTHILLS AND WIND PRONE AREAS.  
 
* TEMPERATURES...MAX TEMPERATURES 90 TO 98 DEGREES ON SUNDAY,  
RISING TO BETWEEN 95 AND 103 DEGREES MONDAY INTO TUESDAY. VERY  
WARM OVERNIGHT LOW TEMPERATURES IN THE FOOTHILLS AND WIND PRONE  
AREAS...REMAINING 75 TO 80 DEGREES IN WARMEST LOCATIONS.  
 
* IMPACTS...IF FIRE IGNITION OCCURS, THERE WILL BE THE POTENTIAL  
FOR VERY RAPID SPREAD OF WILDFIRE WITH LONG RANGE SPOTTING AND  
EXTREME FIRE BEHAVIOR THAT COULD LEAD TO A THREAT TO LIFE AND  
PROPERTY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  
ARE EXPECTED. A COMBINATION OF GUSTY WINDS...LOW RELATIVE  
HUMIDITY...AND HOT TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE  
BEHAVIOR. USE EXTREME CAUTION WHEN USING POTENTIAL FIRE IGNITION  
SOURCES.  
 

 
 

 
 
CAZ548-212315-  
/O.UPG.KLOX.FW.A.0008.171022T1300Z-171025T0100Z/  
/O.EXB.KLOX.FW.W.0008.171022T1300Z-171025T0100Z/  
LOS ANGELES COUNTY SAN GABRIEL VALLEY-  
1031 AM PDT SAT OCT 21 2017  
 
...RED FLAG WARNING IN EFFECT FROM 6 AM SUNDAY TO 6 PM PDT TUESDAY  
FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR THE  
FOOTHILLS OF THE SAN GABRIEL VALLEY...  
 
THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A  
RED FLAG WARNING FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE  
HUMIDITY...WHICH IS IN EFFECT FROM SUNDAY MORNING THROUGH TUESDAY  
AFTERNOON.  
 
* WINDS...NORTHEAST WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH IN  
THE FOOTHILLS ON SUNDAY, INCREASING TO 15 TO 25 MPH WITH GUSTS  
TO 40 MPH MONDAY THROUGH TUESDAY.  
 
* RELATIVE HUMIDITY...MINIMUM VALUES 8 TO 15 PERCENT ON SUNDAY,  
LOWERING TO 5 TO 10 PERCENT MONDAY AND TUESDAY.  
 
* TEMPERATURES...MAX TEMPERATURES 90 TO 97 DEGREES ON SUNDAY,  
RISING TO BETWEEN 98 AND 105 DEGREES MONDAY INTO TUESDAY. VERY  
WARM OVERNIGHT LOW TEMPERATURES IN THE FOOTHILLS AND WIND PRONE  
AREAS...REMAINING 75 TO 80 DEGREES IN WARMEST LOCATIONS.  
 
* IMPACTS...IF FIRE IGNITION OCCURS, THERE WILL BE THE POTENTIAL  
FOR VERY RAPID SPREAD OF WILDFIRE WITH LONG RANGE SPOTTING AND  
EXTREME FIRE BEHAVIOR THAT COULD LEAD TO A THREAT TO LIFE AND  
PROPERTY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  
ARE EXPECTED. A COMBINATION OF GUSTY WINDS...VERY LOW RELATIVE  
HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE  
BEHAVIOR. USE EXTREME CAUTION WHEN USING POTENTIAL FIRE IGNITION  
SOURCES.  
 

 
 

 
 
CAZ240-241-212315-  
/O.UPG.KLOX.FW.A.0008.171022T1300Z-171025T0100Z/  
/O.EXB.KLOX.FW.W.0008.171022T1300Z-171025T0100Z/  
VENTURA COUNTY COAST-  
LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOS ANGELES-  
1031 AM PDT SAT OCT 21 2017  
 
...RED FLAG WARNING IN EFFECT FROM 6 AM SUNDAY TO 6 PM PDT TUESDAY  
FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR THE  
VENTURA COUNTY COAST AND LOS ANGELES COUNTY COAST FROM MALIBU TO  
HOLLYWOOD HILLS...  
 
THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A  
RED FLAG WARNING FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE  
HUMIDITY...WHICH IS IN EFFECT FROM SUNDAY MORNING THROUGH TUESDAY  
AFTERNOON.  
 
* WINDS...NORTHEAST WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH ON  
SUNDAY FROM THE VENTURA COUNTY COAST EXTENDING EASTWARD TO  
MALIBU AND HOLLYWOOD HILLS. WINDS INCREASING TO 15 TO 30 MPH  
WITH GUSTS TO 40 MPH MONDAY THROUGH TUESDAY.  
 
* RELATIVE HUMIDITY...MINIMUM VALUES 8 TO 18 PERCENT SUNDAY,  
LOWERING TO BETWEEN 5 AND 12 PERCENT MONDAY THROUGH TUESDAY.  
VERY POOR HUMIDITY RECOVERIES EXPECTED EACH NIGHT IN THE  
FOOTHILLS AND WIND PRONE AREAS.  
 
* TEMPERATURES...MAX TEMPERATURES 84 TO 94 DEGREES ON SUNDAY,  
RISING TO BETWEEN 95 AND 103 DEGREES MONDAY INTO TUESDAY. VERY  
WARM OVERNIGHT LOW TEMPERATURES IN THE FOOTHILLS AND WIND PRONE  
AREAS...REMAINING IN THE 70S IN WARMEST LOCATIONS.  
 
* IMPACTS...IF FIRE IGNITION OCCURS, THERE WILL BE THE POTENTIAL  
FOR VERY RAPID SPREAD OF WILDFIRE WITH LONG RANGE SPOTTING AND  
EXTREME FIRE BEHAVIOR THAT COULD LEAD TO A THREAT TO LIFE AND  
PROPERTY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  
ARE EXPECTED. A COMBINATION OF GUSTY WINDS...VERY LOW RELATIVE  
HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE  
BEHAVIOR. USE EXTREME CAUTION WHEN USING POTENTIAL FIRE IGNITION  
SOURCES.  
 

 
 

 
 
CAZ252-212315-  
/O.CON.KLOX.FW.W.0008.000000T0000Z-171022T1700Z/  
SANTA BARBARA COUNTY MOUNTAINS-  
1031 AM PDT SAT OCT 21 2017  
 
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 AM PDT SUNDAY FOR  
GUSTY NORTH TO NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR THE  
MOUNTAINS OF SANTA BARBARA COUNTY...  
 
* WINDS...AREAS OF NORTH TO NORTHEAST WINDS 15 TO 30 MPH WITH  
GUSTS TO 45 MPH...STRONGEST NEAR MONTECITO HILLS.  
 
* RELATIVE HUMIDITY...MINIMUM VALUES 12 TO 20 PERCENT...WITH POOR  
RECOVERY TONIGHT.  
 
* TEMPERATURES...RISING INTO THE LOWER 80S ACROSS THE SANTA YNEZ  
MOUNTAINS THIS AFTERNOON AND EVENING.  
 
* IMPACTS...IF FIRE IGNITION OCCURS, THERE WILL BE THE POTENTIAL  
FOR VERY RAPID SPREAD OF WILDFIRE WITH LONG RANGE SPOTTING AND  
EXTREME FIRE BEHAVIOR THAT COULD LEAD TO A THREAT TO LIFE AND  
PROPERTY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  
ARE OCCURRING OR EXPECTED. A COMBINATION OF GUSTY WINDS...VERY  
LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO  
EXTREME FIRE BEHAVIOR. USE EXTREME CAUTION WHEN USING POTENTIAL  
FIRE IGNITION SOURCES.  
 

 
 

 
 
CAZ253-254-212315-  
/O.CON.KLOX.FW.W.0008.000000T0000Z-171025T0100Z/  
VENTURA COUNTY MOUNTAINS / LOS PADRES NATIONAL FOREST-  
LOS ANGELES COUNTY MOUNTAINS / ANGELES NATIONAL FOREST-  
1031 AM PDT SAT OCT 21 2017  
 
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT TUESDAY  
FOR GUSTY NORTH TO NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR  
THE MOUNTAINS OF LOS ANGELES AND VENTURA COUNTIES...  
 
* WINDS...AREAS OF NORTH TO NORTHEAST WINDS 15 TO 30 MPH WITH  
GUSTS 35 TO 45 MPH THROUGH SUNDAY...EXCEPT ISOLATED GUSTS TO  
AROUND 50 MPH NEAR WHITAKER PEAK. FOR MONDAY THROUGH  
TUESDAY...NORTHEAST WINDS 20 TO 35 MPH WITH GUSTS 40 TO 50 MPH  
THROUGH PASSES AND CANYONS...EXCEPT ISOLATED GUSTS TO 55 MPH ON  
TUESDAY IN WIND FAVORED LOCATIONS.  
 
* RELATIVE HUMIDITY...MINIMUM VALUES 12 TO 20 PERCENT TODAY,  
LOWERING TO BETWEEN 8 AND 15 PERCENT SUNDAY THROUGH TUESDAY.  
VERY POOR HUMIDITY RECOVERIES EXPECTED EACH NIGHT.  
 
* TEMPERATURES...RISING INTO THE 70S ACROSS THE LOWER ELEVATIONS  
TODAY...80S ON SUNDAY THROUGH TUESDAY. VERY WARM OVERNIGHT LOWS  
IN THE FOOTHILLS.  
 
* IMPACTS...IF FIRE IGNITION OCCURS, THERE WILL BE THE POTENTIAL  
FOR VERY RAPID SPREAD OF WILDFIRE WITH LONG RANGE SPOTTING AND  
EXTREME FIRE BEHAVIOR THAT COULD LEAD TO A THREAT TO LIFE AND  
PROPERTY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  
ARE EXPECTED. A COMBINATION OF GUSTY WINDS...VERY LOW RELATIVE  
HUMIDITY...AND HOT TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE  
BEHAVIOR. USE EXTREME CAUTION WHEN USING POTENTIAL FIRE IGNITION  
SOURCES.  
 

 
 

 
 
CAZ288-212315-  
/O.CON.KLOX.FW.W.0008.000000T0000Z-171025T0100Z/  
SANTA CLARITA VALLEY-  
1031 AM PDT SAT OCT 21 2017  
 
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT TUESDAY FOR  
GUSTY NORTH TO NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR THE  
SANTA CLARITA VALLEY...  
 
* WINDS...NORTH TO NORTHEAST WINDS 15 TO 25 MPH WITH GUSTS 30 TO  
40 MPH TODAY...INCREASING TO 15 TO 30 MPH WITH GUSTS 35 TO 45  
MPH MONDAY THROUGH TUESDAY.  
 
* RELATIVE HUMIDITY...MINIMUM VALUES 10 TO 15 PERCENT THROUGH  
SUNDAY, LOWERING TO BETWEEN 8 AND 12 PERCENT MONDAY THROUGH  
TUESDAY. VERY POOR HUMIDITY RECOVERIES EXPECTED EACH NIGHT IN  
THE FOOTHILLS AND WIND PRONE AREAS.  
 
* TEMPERATURES...MAX TEMPERATURES AROUND 80 DEGREES TODAY, RISING  
INTO THE LOWER 90S SUNDAY THROUGH TUESDAY. VERY WARM OVERNIGHT  
LOW TEMPERATURES IN THE FOOTHILLS AND WIND PRONE AREAS.  
 
* IMPACTS...IF FIRE IGNITION OCCURS, THERE WILL BE THE POTENTIAL  
FOR VERY RAPID SPREAD OF WILDFIRE WITH LONG RANGE SPOTTING AND  
EXTREME FIRE BEHAVIOR THAT COULD LEAD TO A THREAT TO LIFE AND  
PROPERTY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  
ARE EXPECTED. A COMBINATION OF GUSTY WINDS...VERY LOW RELATIVE  
HUMIDITY...AND HOT TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE  
BEHAVIOR. USE EXTREME CAUTION WHEN USING POTENTIAL FIRE IGNITION  
SOURCES.  
 

 
 

 
 
GOMBERG/MUNROE  
 
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