Alert archive / California / Red Flag Warnings in 2007

Red Flag Warning 3, NWS San Francisco Bay Area, CA

October 21, 2007

NWS San Francisco Bay Area, CA issued this red flag warning at Oct 21, 2007, 3:18 PM PDT. It took effect at Oct 21, 2007, 6:00 PM PDT. It was in force for 60 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 21, 2007, 3:18 PM PDT (22:18 UTC)
In effect from: Oct 21, 2007, 6:00 PM PDT
Expired: Oct 24, 2007, 6:00 AM PDT
In force: 60 hr
Issued by: NWS San Francisco Bay Area, CA

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS86 KMTR 212218
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
318 PM PDT SUN OCT 21 2007

...RED FLAG WARNING IN EFFECT FROM 6 PM SUNDAY EVENING THROUGH 4
PM TUESDAY AFTERNOON FOR LOW RELATIVE HUMIDITY AND OFFSHORE WINDS
FOR SAN BENITO COUNTY AND INTERIOR MONTEREY COUNTY...

.GUSTY NORTHEAST WINDS AND PLUMMETING HUMIDITIES ON SUNDAY AFTERNOON
WERE RESULTING IN RAPID DRYING OF FUELS ACROSS SAN BENITO COUNTY
AND INTERIOR MONTEREY COUNTY. HUMIDITY VALUES WILL DROP INTO THE
SINGLE DIGITS IN THE DRIEST AREAS BY LATE SUNDAY AFTERNOON. WINDS
WILL EASE THIS EVENING AND REMAIN LIGHT TO LOCALLY MODERATE OUT OF
THE EAST THROUGH TUESDAY. BUT ALMOST NO HUMIDITY RECOVERIES ARE
EXPECTED OVERNIGHT TONIGHT AND AGAIN ON MONDAY NIGHT. A
COMBINATION OF A VERY DRY AIRMASS...OFFSHORE BREEZES...AND DRY
FUELS WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS IN THE WARNING
AREA THROUGH TUESDAY.

CAZ210-221200-
/O.UPG.KMTR.FW.A.0003.071022T0200Z-071023T2100Z/
/O.NEW.KMTR.FW.W.0003.071022T0100Z-071023T2300Z/
THE SALINAS VALLEY AND PINNACLES NM-
318 PM PDT SUN OCT 21 2007

...RED FLAG WARNING IN EFFECT FROM 6 PM THIS EVENING TO 4 PM PDT
TUESDAY FOR LOW RELATIVE HUMIDITY AND DRYING OFFSHORE WINDS...
...FIRE WEATHER WATCH NO LONGER IN EFFECT...

THE NATIONAL WEATHER SERVICE IN MONTEREY HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 4 PM PDT
TUESDAY. THE RED FLAG WARNING IS IN EFFECT FOR INTERIOR MONTEREY
COUNTY AND SAN BENITO COUNTY...INCLUDING PINNACLES NATIONAL
MONUMENT.

RELATIVE HUMIDITY VALUES ACROSS THE WARNING AREA WILL DROP TO 10-15%
BY LATE SUNDAY AFTERNOON...AND INTO THE SINGLE DIGITS IN THE
DRIEST AREAS. HUMIDITIES ARE NOT EXPECTED TO RECOVER MUCH...IF AT
ALL...ON SUNDAY NIGHT AND AGAIN ON MONDAY NIGHT. EAST WINDS OF 5
TO 15 MPH WILL CONTINUE THROUGH TUESDAY WITH LOCAL GUSTS TO 25 MPH
LIKELY OVER THE HIGHEST RIDGES.

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
OFFSHORE WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. PLEASE ADVISE THE APPROPRIATE
OFFICIALS OR FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING.

$$

DYKEMA

5 follow-up statements

000 
WWUS86 KMTR 221151
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
451 AM PDT MON OCT 22 2007

...RED FLAG WARNING IN EFFECT THROUGH 4 PM TUESDAY AFTERNOON FOR
LOW RELATIVE HUMIDITY AND OFFSHORE WINDS FOR SAN BENITO COUNTY AND
INTERIOR MONTEREY COUNTY...

.OFFSHORE WINDS AND LOW HUMIDITIES ARE RESULTING IN RAPID DRYING
OF FUELS ACROSS SAN BENITO COUNTY AND INTERIOR MONTEREY COUNTY.
HUMIDITY VALUES WILL DROP INTO THE SINGLE DIGITS IN THE DRIEST
AREAS TODAY WITH ONLY LITTLE OR NO RECOVERIES TONIGHT. IN ADDITION
LOCAL NORTHEAST WINDS OF 10 TO 20 MPH CAN BE EXPECTED MAINLY IN
THE HIGHER ELEVATIONS THROUGH TUESDAY. THIS WILL CREATE CRITICAL
FIRE WEATHER CONDITIONS AND A RED FLAG WARNING IS IN EFFECT
THROUGH TUESDAY AFTERNOON. OFFSHORE FLOW WILL WEAKEN ON TUESDAY
WITH BETTER HUMIDITY RECOVERIES BY TUESDAY NIGHT.


CAZ210-222000-
/O.CON.KMTR.FW.W.0003.000000T0000Z-071023T2300Z/
THE SALINAS VALLEY AND PINNACLES NM-
451 AM PDT MON OCT 22 2007

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 4 PM PDT TUESDAY...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
OFFSHORE WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. PLEASE ADVISE THE
APPROPRIATE OFFICIALS OR FIRE CREWS IN THE FIELD OF THIS RED FLAG
WARNING.

$$

W PI

000 
WWUS86 KMTR 222057
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
157 PM PDT MON OCT 22 2007

...RED FLAG WARNING IN EFFECT THROUGH 4 PM TUESDAY AFTERNOON FOR
LOW RELATIVE HUMIDITY AND OFFSHORE WINDS FOR SAN BENITO COUNTY
AND INTERIOR MONTEREY COUNTY...

.OFFSHORE WINDS AND LOW RELATIVE HUMIDITIES WILL CONTINUE ACROSS
SAN BENITO COUNTY AND INTERIOR MONTEREY COUNTY. POOR RELATIVE
HUMIDITY RECOVERIES CAN BE EXPECTED AGAIN TONIGHT WITH HUMIDITY
VALUES IN THE SINGLE DIGITS AND TEENS TUESDAY AFTERNOON. IN
ADDITION...LOCAL NORTHEAST WINDS OF 10 TO 20 MPH WITH AN
OCCASIONAL GUST TO 25 MPH CAN BE EXPECTED OVER THE HIGHER
ELEVATIONS THROUGH TUESDAY. THIS WILL CREATE CRITICAL FIRE WEATHER
CONDITIONS AND A RED FLAG WARNING REMAINS IN EFFECT THROUGH TUESDAY
AFTERNOON. THE OFFSHORE FLOW PRESSURE GRADIENT IS FORECAST TO
WEAKEN TUESDAY NIGHT WITH DECREASING WINDS AND IMPROVING HUMIDITY
RECOVERIES.

CAZ210-231500-
/O.CON.KMTR.FW.W.0003.000000T0000Z-071023T2300Z/
THE SALINAS VALLEY AND PINNACLES NM-
157 PM PDT MON OCT 22 2007

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 4 PM PDT TUESDAY...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
OFFSHORE WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES
WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. PLEASE ADVISE THE
APPROPRIATE OFFICIALS OR FIRE CREWS IN THE FIELD OF THIS RED FLAG
WARNING.

$$

MEHLE

000 
WWUS86 KMTR 231645
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
945 AM PDT TUE OCT 23 2007

...RED FLAG WARNING IN EFFECT THROUGH 6 AM WEDNESDAY MORNING FOR LOW
RELATIVE HUMIDITY AND OFFSHORE WINDS FOR SAN BENITO COUNTY AND
INTERIOR MONTEREY COUNTY...

.DRY OFFSHORE WINDS AND LOW RELATIVE HUMIDITIES WILL CONTINUE
ACROSS SAN BENITO COUNTY AND INTERIOR MONTEREY COUNTY THROUGH
EARLY WEDNESDAY. AFTERNOON TEMPERATURES WILL RISE A FEW DEGREES
FROM YESTERDAY AND RELATIVE HUMIDITIES WILL ONCE AGAIN BE IN THE
SINGLE DIGITS AND TEENS FOR THE WARNED AREA. IN ADDITION...LOCAL
NORTHEAST WINDS OF 10 TO 20 MPH WITH AN OCCASIONAL GUST TO 25 MPH
CAN BE EXPECTED OVER THE HIGHER ELEVATIONS TODAY. WINDS ARE
FORECAST TO DIMINISH TONIGHT AS THE OFFSHORE FLOW WEAKENS.
HOWEVER...POOR RELATIVE HUMIDITY RECOVERIES WILL BE SEEN ACROSS
THE HIGHER ELEVATIONS. AS A RESULT...CRITICAL FIRE WEATHER
CONDITIONS WILL CONTINUE THEREFORE THE RED FLAG WARNING HAS BEEN
EXTENDED THROUGH WEDNESDAY MORNING.

CAZ210-240300-
/O.EXT.KMTR.FW.W.0003.000000T0000Z-071024T1300Z/
THE SALINAS VALLEY AND PINNACLES NM-
945 AM PDT TUE OCT 23 2007

...RED FLAG WARNING NOW IN EFFECT UNTIL 6 AM PDT WEDNESDAY...

THE RED FLAG WARNING IS NOW IN EFFECT UNTIL 6 AM PDT WEDNESDAY.

BREEZY NORTHEAST WINDS OF 10 TO 20 MPH WITH THE OCCASIONAL GUST OF
25 MPH WILL BE SEEN OVER THE HIGHER TERRAIN OF INTERIOR MONTEREY
AND SAN BENITO COUNTIES TODAY. TEMPERATURES WILL WARM 5 TO 10
DEGREES FROM YESTERDAY WITH HIGHS REACHING THE UPPER 80S AND
LOWER 90S. RELATIVE HUMIDITIES WILL ONCE AGAIN LOWER TO THE SINGLE
DIGITS AND LOWER TEENS. THE NORTHEAST WINDS WILL DIMINISH FOR A
PERIOD TONIGHT...BUT RELATIVE HUMIDITY RECOVERIES WILL REMAIN POOR
AND BELOW 30 PERCENT OVER THE HIGHER ELEVATIONS. CONDITIONS WILL
SLOWLY IMPROVE ON WEDNESDAY WITH SLIGHTLY HIGHER RELATIVE
HUMIDITIES...BUT TEMPERATURES WILL STILL REMAIN WELL ABOVE NORMAL. 

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 WILL CREATE
EXPLOSIVE FIRE GROWTH POTENTIAL.

$$

MEHLE

000 
WWUS86 KMTR 240235
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
735 PM PDT TUE OCT 23 2007

...RED FLAG WARNING REMAINS IN EFFECT THROUGH 6 AM WEDNESDAY
MORNING FOR VERY POOR OVERNIGHT RELATIVE HUMIDITY RECOVERY FOR SAN
BENITO COUNTY AND INTERIOR MONTEREY COUNTY...

.DRY OFFSHORE WINDS HAVE DIMINISHED...BUT A VERY DRY AND MILD AIR
MASS WILL REMAIN IN PLACE TONIGHT AND RESULT IN UNSEASONABLY MILD
OVERNIGHT TEMPERATURES IN THE HILLS AND POOR RELATIVE HUMIDITY
RECOVERIES ACROSS THE HIGHER ELEVATIONS. AS A RESULT...CRITICAL
FIRE WEATHER CONDITIONS WILL CONTINUE THROUGH THE OVERNIGHT HOURS.

CAZ210-241300-
/O.CON.KMTR.FW.W.0003.000000T0000Z-071024T1300Z/
THE SALINAS VALLEY AND PINNACLES NM-
735 PM PDT TUE OCT 23 2007

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 AM PDT WEDNESDAY...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 AM PDT WEDNESDAY. 

WINDS HAVE NOW DIMINISHED TO 5 TO 10 MPH WITH AN OCCASIONAL GUST
TO 15 MPH OVER THE HIGHER TERRAIN OF INTERIOR MONTEREY AND SAN
BENITO COUNTIES AND THESE LIGHTER WINDS ARE EXPECTED TO CONTINUE
TONIGHT AND WEDNESDAY. RELATIVE HUMIDITY RECOVERIES OVERNIGHT
TONIGHT WILL AGAIN BE POOR HOWEVER...REMAINING BELOW 30 PERCENT
OVER THE HIGHER ELEVATIONS. CONDITIONS WILL SLOWLY BEGIN TO IMPROVE
ON WEDNESDAY AS RELATIVE HUMIDITIES INCREASE SLIGHTLY...AND WITH
TEMPERATURES NOT QUITE AS WARM AS ON TUESDAY THOUGH STILL WELL
ABOVE NORMAL.

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE
EITHER OCCURRING NOW...OR WILL SHORTLY. 

$$

BLIER

000 
WWUS86 KMTR 241254
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
554 AM PDT WED OCT 24 2007

...RED FLAG WARNING IS ALLOWED TO EXPIRE...


CAZ210-241400-
/O.EXP.KMTR.FW.W.0003.000000T0000Z-071024T1300Z/
THE SALINAS VALLEY AND PINNACLES NM-
554 AM PDT WED OCT 24 2007

...RED FLAG WARNING WILL EXPIRE AT 6 AM PDT EARLY THIS MORNING...

OFFSHORE FLOW CONTINUES TO WEAKEN. HUMIDITIES OVER THE INTERIOR
OF MONTEREY AND SAN BENITO COUNTIES ARE NOT EXPECTED TO REACH
CRITICALLY LOW VALUES TODAY. THEREFORE THE RED FLAG WARNING IS
ALLOWED TO EXPIRE.

$$

W PI

Nearby

Red Flag Warnings in California, 2007 Every red flag warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.