Red Flag Warning 5, NWS San Francisco Bay Area, CA

000 
WWUS86 KMTR 262040
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
140 PM PDT TUE AUG 26 2008

CAZ511-271200-
/O.EXB.KMTR.FW.W.0005.080827T1200Z-080829T0000Z/
EAST BAY HILLS AND DIABLO RANGE-
140 PM PDT TUE AUG 26 2008

...RED FLAG WARNING IN EFFECT FOR THE EAST BAY HILLS FROM 5 AM
WEDNESDAY TO 5 PM PDT THURSDAY...

THE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA HAS ISSUED
A RED FLAG WARNING FOR THE EAST BAY HILLS...WHICH IS IN EFFECT FROM 5
AM WEDNESDAY TO 5 PM PDT THURSDAY.

HOT TEMPERATURES THIS AFTERNOON WILL BE FOLLOWED BY A NIGHT OF
POOR RELATIVE HUMIDITY RECOVERY ACROSS THE EAST BAY HILLS OF
CONTRA COSTA COUNTY. EARLY TOMORROW MORNING A PERIOD OF OFFSHORE WINDS
IS EXPECTED TO DEVELOP. NORTHEAST WINDS OF 5 TO 15 MPH WITH LOCAL
GUSTS TO 20 MPH WILL BE LIKELY DURING THE OVERNIGHT AND EARLY
MORNING HOURS OF WEDNESDAY. THE COMBINATION OF VERY POOR RELATIVE
HUMIDITY RECOVERY AND THE LIGHT OFFSHORE WINDS WILL CREATE A
POTENTIALLY DANGEROUS FIRE WEATHER SITUATION.

HOT AND DRY WEATHER WILL CONTINUE TOMORROW AFTERNOON BUT WITH LIGHT
WINDS. TOMORROW NIGHT ANOTHER ROUND OF VERY POOR RH RECOVERIES OF
LESS THAN 30% ARE EXPECTED ALONG WITH NORTHEAST WINDS OF 5 TO 15
MPH. THE STRONGEST WINDS ARE ONCE AGAIN EXPECTED FROM ABOUT 11 PM
WEDNESDAY NIGHT THROUGH 10 AM THURSDAY MORNING.

THE HEAT EVENT WILL LIKELY PEAK DURING THE DAY THURSDAY WITH
TRIPLE DIGIT TEMPERATURES ACROSS THE EAST BAY HILLS.

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.

$$

CAZ507-271200-
/O.EXT.KMTR.FW.W.0005.080827T1200Z-080829T0000Z/
NORTH BAY MOUNTAINS-
140 PM PDT TUE AUG 26 2008

...RED FLAG WARNING NOW IN EFFECT FROM 5 AM WEDNESDAY TO 5 PM PDT
THURSDAY...

THE RED FLAG WARNING IS NOW IN EFFECT FROM 5 AM WEDNESDAY TO 5 PM
PDT THURSDAY. 

HOT TEMPERATURES THIS AFTERNOON WILL BE FOLLOWED BY A NIGHT OF
POOR RELATIVE HUMIDITY RECOVERY ACROSS THE NORTH BAY HILLS OF
NAPA AND SONOMA COUNTIES...AND ATOP MOUNT TAMALPAIS. DURING THE
EARLY MORNING HOURS A PERIOD OF OFFSHORE WINDS IS EXPECTED TO DEVELOP.
NORTHEAST WINDS OF 5 TO 15 MPH WITH LOCAL GUSTS TO 25 MPH WILL BE
LIKELY DURING THE OVERNIGHT AND EARLY MORNING HOURS. THE STRONGEST
WINDS WILL LIKELY OCCUR ACROSS EASTERN NAPA COUNTY. THE
COMBINATION OF VERY POOR RELATIVE HUMIDITY RECOVERY AND THE LIGHT
OFFSHORE WINDS WILL CREATE A POTENTIALLY DANGEROUS FIRE WEATHER
SITUATION.

HOT AND DRY WEATHER WILL CONTINUE TOMORROW AFTERNOON BUT WITH LIGHT
WINDS. TOMORROW NIGHT ANOTHER ROUND OF VERY POOR RH RECOVERY OF
LESS THAN 30% IS EXPECTED ALONG WITH NORTHEAST WINDS OF 5 TO 15
MPH. THE STRONGEST WINDS ARE ONCE AGAIN EXPECTED FROM ABOUT 11 PM
TOMORROW NIGHT THROUGH 10 AM THURSDAY MORNING.

THE HEAT EVENT WILL LIKELY PEAK DURING THE DAY THURSDAY WITH
TRIPLE DIGIT TEMPERATURES ACROSS THE NORTH BAY HILLS.

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.

$$


LARRY

000 
WWUS86 KMTR 271146
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
446 AM PDT WED AUG 27 2008

CAZ507-272245-
/O.CON.KMTR.FW.W.0005.080827T1200Z-080829T0000Z/
NORTH BAY MOUNTAINS-
446 AM PDT WED AUG 27 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THURSDAY FOR
THE NORTH BAY HILLS...

HOT TEMPERATURES THIS AFTERNOON WILL BE FOLLOWED BY ANOTHER NIGHT OF
POOR RELATIVE HUMIDITY RECOVERY ACROSS THE NORTH BAY HILLS OF NAPA
AND SONOMA COUNTIES...AND ATOP MOUNT TAMALPAIS. AFTER ABOUT 9 PM
TONIGHT A PERIOD OF MODERATE NORTHEAST WINDS OF 10 TO 20 MPH WITH
LOCAL GUSTS TO 30 MPH WILL DEVELOP THROUGH ABOUT 10 AM THURSDAY
MORNING. THE STRONGEST WINDS WILL LIKELY OCCUR ACROSS EASTERN NAPA
COUNTY. THE COMBINATION OF VERY POOR RELATIVE HUMIDITY RECOVERY
AND THE OFFSHORE WINDS WILL CREATE A POTENTIALLY DANGEROUS FIRE
WEATHER SITUATION.

NEAR RECORD HIGH TEMPERATURES AND VERY DRY WEATHER WILL CONTINUE
THROUGH THURSDAY AFTERNOON WITH WESTERLY WINDS RETURNING BY LATE
IN THE DAY.

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.

$$

CAZ511-272245-
/O.CON.KMTR.FW.W.0005.080827T1200Z-080829T0000Z/
EAST BAY HILLS AND DIABLO RANGE-
446 AM PDT WED AUG 27 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THURSDAY FOR
THE EAST BAY HILLS...

HOT TEMPERATURES THIS AFTERNOON WILL BE FOLLOWED BY ANOTHER NIGHT
OF POOR RELATIVE HUMIDITY RECOVERY ACROSS THE EAST BAY HILLS.
AFTER 10 PM TONIGHT A PERIOD OF NORTHEAST WINDS OF 10 TO 20 MPH
WITH LOCAL GUSTS TO 25 MPH WILL DEVELOP THROUGH ABOUT 10 AM THURSDAY. 
THE COMBINATION OF VERY POOR RELATIVE HUMIDITY RECOVERY AND OFFSHORE
WINDS WILL CREATE A POTENTIALLY DANGEROUS FIRE WEATHER SITUATION.

NEAR RECORD HIGH TEMPERATURES AND VERY DRY WEATHER WILL CONTINUE
THROUGH THURSDAY AFTERNOON WITH WESTERLY WINDS RETURNING BY LATE
IN THE DAY.

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.

$$

000 
WWUS86 KMTR 272128
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
228 PM PDT WED AUG 27 2008

CAZ507-280530-
/O.EXT.KMTR.FW.W.0005.000000T0000Z-080829T1500Z/
NORTH BAY MOUNTAINS-
228 PM PDT WED AUG 27 2008

...RED FLAG WARNING NOW IN EFFECT UNTIL 8 AM PDT FRIDAY FOR THE
NORTH BAY HILLS...

NEAR RECORD HIGH TEMPERATURES AND VERY DRY WEATHER WILL CONTINUE
THROUGH TOMORROW AFTERNOON WITH WESTERLY WINDS RETURNING BY LATE
IN THE DAY. RELATIVE HUMIDITY RECOVERIES ARE EXPECTED TO REMAIN
POOR THROUGH FRIDAY MORNING THEREFORE THE RED FLAG WARNING HAS BEEN
EXTENDED INTO EARLY FRIDAY MORNING.

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.

$$

CAZ511-280530-
/O.EXT.KMTR.FW.W.0005.000000T0000Z-080829T1500Z/
EAST BAY HILLS AND DIABLO RANGE-
228 PM PDT WED AUG 27 2008

...RED FLAG WARNING NOW IN EFFECT UNTIL 8 AM PDT FRIDAY FOR THE
EAST BAY HILLS...

NEAR RECORD HIGH TEMPERATURES AND VERY DRY WEATHER WILL CONTINUE
THROUGH TOMORROW AFTERNOON WITH WESTERLY WINDS RETURNING BY LATE
IN THE DAY. RELATIVE HUMIDITY RECOVERIES ARE EXPECTED TO REMAIN
POOR THROUGH FRIDAY MORNING THEREFORE THE RED FLAG WARNING HAS BEEN
EXTENDED INTO EARLY FRIDAY MORNING.

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.

$$

LARRY

000 
WWUS86 KMTR 280541
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1041 PM PDT WED AUG 27 2008

CAZ507-281400-
/O.CON.KMTR.FW.W.0005.000000T0000Z-080829T1500Z/
NORTH BAY MOUNTAINS-
1041 PM PDT WED AUG 27 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 AM PDT FRIDAY FOR
THE NORTH BAY HILLS...

A PERIOD OF STRONG NORTHEAST WINDS OF 15 TO 25 MPH WITH LOCALLY
HIGHER GUSTS WILL DEVELOP OVERNIGHT THROUGH ABOUT 10 AM THURSDAY.
THE STRONG WINDS WILL COINCIDE WITH MILD OVERNIGHT TEMPERATURES
AND POOR RH RECOVERY BELOW 30%.

NEAR OR RECORD WARMTH IS EXPECTED ON THURSDAY AFTERNOON. THEN
ANOTHER MILD AND DRY NIGHT THURSDAY NIGHT INTO FRIDAY WITH ONE
LAST ROUND OF OFFSHORE WINDS. HOWEVER THE WINDS WILL LIKELY BE A
LITTLE LIGHTER THURSDAY NIGHT INTO FRIDAY.

BY FRIDAY SOME MODEST COOLING WILL OCCUR WITH SLIGHTLY HIGHER RH
VALUES AND A RETURN TO ONSHORE WINDS.

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.

$$

CAZ511-281400-
/O.CON.KMTR.FW.W.0005.000000T0000Z-080829T1500Z/
EAST BAY HILLS AND DIABLO RANGE-
1041 PM PDT WED AUG 27 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 AM PDT FRIDAY
FOR THE EAST BAY HILLS...

A PERIOD OF STRONG NORTHEAST WINDS OF 15 TO 25 MPH WITH LOCALLY
HIGHER GUSTS WILL DEVELOP OVERNIGHT THROUGH ABOUT 10 AM THURSDAY.
THE STRONG WINDS WILL COINCIDE WITH MILD OVERNIGHT TEMPERATURES
AND POOR RH RECOVERY BELOW 30%.

NEAR OR RECORD WARMTH IS EXPECTED ON THURSDAY AFTERNOON. THEN
ANOTHER MILD AND DRY NIGHT THURSDAY NIGHT INTO FRIDAY WITH ONE
LAST ROUND OF OFFSHORE WINDS. HOWEVER THE WINDS WILL LIKELY BE A
LITTLE LIGHTER THURSDAY NIGHT INTO FRIDAY.

BY FRIDAY SOME MODEST COOLING WILL OCCUR WITH SLIGHTLY HIGHER RH
VALUES AND A RETURN TO ONSHORE WINDS.

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.

$$

000 
WWUS86 KMTR 281226
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
526 AM PDT THU AUG 28 2008

CAZ507-282230-
/O.CON.KMTR.FW.W.0005.000000T0000Z-080829T1500Z/
NORTH BAY MOUNTAINS-
526 AM PDT THU AUG 28 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 AM PDT FRIDAY...

THE PERIOD OF STRONGEST NORTHEAST OFFSHORE WINDS WILL CONTINUE
THROUGH THIS MORNING AND THEN EASE THIS AFTERNOON. HOWEVER VERY
HOT AND DRY WEATHER WILL CONTINUE THIS AFTERNOON. ANOTHER NIGHT OF
MILD TEMPERATURES AND VERY POOR RH RECOVERY IS EXPECTED WITH 5 TO
15 MPH NORTHEAST WINDS IN THE HILLS TONIGHT.

BY FRIDAY SOME COOLING WILL OCCUR WITH SLIGHTLY HIGHER RH VALUES
AND A RETURN TO ONSHORE WINDS.

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.

$$

CAZ511-282230-
/O.CON.KMTR.FW.W.0005.000000T0000Z-080829T1500Z/
EAST BAY HILLS AND DIABLO RANGE-
526 AM PDT THU AUG 28 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 AM PDT FRIDAY...

THE PERIOD OF STRONGEST NORTHEAST OFFSHORE WINDS WILL CONTINUE
THROUGH THIS MORNING AND THEN EASE THIS AFTERNOON. HOWEVER VERY
HOT AND DRY WEATHER WILL CONTINUE THIS AFTERNOON. ANOTHER NIGHT OF
MILD TEMPERATURES AND VERY POOR RH RECOVERY IS EXPECTED WITH 5 TO
15 MPH NORTHEAST WINDS IN THE HILLS TONIGHT.

BY FRIDAY SOME COOLING WILL OCCUR WITH SLIGHTLY HIGHER RH VALUES
AND A RETURN TO ONSHORE WINDS.

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.

$$

000 
WWUS86 KMTR 281717
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1017 AM PDT THU AUG 28 2008

CAZ507-290130-
/O.EXT.KMTR.FW.W.0005.000000T0000Z-080830T0300Z/
NORTH BAY MOUNTAINS-
1017 AM PDT THU AUG 28 2008

...RED FLAG WARNING NOW IN EFFECT UNTIL 8 PM PDT FRIDAY...

THE PERIOD OF STRONGEST NORTHEAST OFFSHORE WINDS WILL CONTINUE
THROUGH THIS MORNING AND THEN EASE THIS AFTERNOON. HOWEVER VERY
HOT AND DRY WEATHER WILL CONTINUE THIS AFTERNOON. ANOTHER NIGHT OF
MILD TEMPERATURES AND VERY POOR RH RECOVERY IS EXPECTED WITH 5 TO
15 MPH NORTHEAST WINDS IN THE HILLS TONIGHT. AN ADDITIONAL HOT DAY IS
FORECAST FOR FRIDAY ALONG WITH BREEZY CONDITIONS DURING THE
AFTERNOON AND EARLY EVENING HOURS IN ADVANCE OF THE RETURNING
SEABREEZE. LOCALLY BREEZY CONDITIONS CAN BE EXPECTED ON FRIDAY
WITH SOME RIDGE TOPS GUSTING TO 25 MPH.

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.

$$

CAZ511-290130-
/O.EXT.KMTR.FW.W.0005.000000T0000Z-080830T0300Z/
EAST BAY HILLS AND DIABLO RANGE-
1017 AM PDT THU AUG 28 2008

...RED FLAG WARNING NOW IN EFFECT UNTIL 8 PM PDT FRIDAY...

THE PERIOD OF STRONGEST NORTHEAST OFFSHORE WINDS WILL CONTINUE
THROUGH THIS MORNING AND THEN EASE THIS AFTERNOON. HOWEVER VERY
HOT AND DRY WEATHER WILL CONTINUE THIS AFTERNOON. ANOTHER NIGHT OF
MILD TEMPERATURES AND VERY POOR RH RECOVERY IS EXPECTED WITH 5 TO
15 MPH NORTHEAST WINDS IN THE HILLS TONIGHT. AN ADDITIONAL HOT
DAY IS FORECAST FOR FRIDAY ALONG WITH BREEZY CONDITIONS DURING THE
AFTERNOON AND EARLY EVENING HOURS IN ADVANCE OF THE RETURNING
SEABREEZE. LOCALLY BREEZY CONDITIONS CAN BE EXPECTED ON FRIDAY
WITH SOME RIDGE TOPS GUSTING TO 25 MPH.

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.

$$

000 
WWUS86 KMTR 282155
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
255 PM PDT THU AUG 28 2008

CAZ507-291500-
/O.CON.KMTR.FW.W.0005.000000T0000Z-080830T0300Z/
NORTH BAY MOUNTAINS-
255 PM PDT THU AUG 28 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY...

ANOTHER NIGHT OF MILD TEMPERATURES AND VERY POOR RH RECOVERY IS
EXPECTED WITH 5 TO 15 MPH NORTH TO EAST WINDS IN THE HILLS TONIGHT
WITH LOCAL GUSTS OVER 20 MPH. AN ADDITIONAL HOT DAY IS FORECAST FOR
FRIDAY ALONG WITH BREEZY CONDITIONS DURING THE AFTERNOON AND EARLY
EVENING HOURS IN ADVANCE OF THE RETURNING SEABREEZE. SOME RIDGE
TOPS ARE FORECAST TO GUST TO 25 MPH. CONDITIONS WILL GREATLY
IMPROVE BY FRIDAY NIGHT AS HUMIDITY RECOVERIES IMPROVE DUE TO THE
ONSHORE FLOW AND WINDS SWITCH TO THE WEST AND SOUTHWEST.

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.

$$

CAZ511-291500-
/O.CON.KMTR.FW.W.0005.000000T0000Z-080830T0300Z/
EAST BAY HILLS AND DIABLO RANGE-
255 PM PDT THU AUG 28 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY...

ANOTHER NIGHT OF MILD TEMPERATURES AND VERY POOR RH RECOVERY IS
EXPECTED WITH 5 TO 15 MPH NORTHEAST WINDS IN THE HILLS TONIGHT
WITH LOCAL GUSTS OVER 25 MPH. AN ADDITIONAL HOT DAY IS FORECAST
FOR FRIDAY ALONG WITH BREEZY CONDITIONS DURING THE AFTERNOON AND
EARLY EVENING HOURS IN ADVANCE OF THE RETURNING SEABREEZE. SOME
RIDGE TOPS ARE FORECAST TO GUST TO 30 MPH. CONDITIONS WILL GREATLY
IMPROVE BY FRIDAY NIGHT AS HUMIDITY RECOVERIES IMPROVE DUE TO THE
ONSHORE FLOW AND WINDS SWITCH TO THE WEST AND SOUTHWEST.

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.

$$

000 
WWUS86 KMTR 291217
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
517 AM PDT FRI AUG 29 2008

CAZ507-292230-
/O.CON.KMTR.FW.W.0005.000000T0000Z-080830T0300Z/
NORTH BAY MOUNTAINS-
517 AM PDT FRI AUG 29 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING FOR THE NORTH BAY HILLS...

HOT AND DRY CONDITIONS WILL CONTINUE AGAIN TODAY. DRY NORTH WINDS
WILL EASE THIS MORNING AS WINDS TURN WESTERLY OR ONSHORE LATER
THIS AFTERNOON AND EVENING. THE RETURN OF ONSHORE WINDS WILL MARK
A CRITICAL CHANGE IN THE WEATHER WITH RH RECOVERIES DELAYED SEVERAL
HOURS BEHIND THE ONSHORE WIND SHIFT.

CONDITIONS WILL QUICKLY IMPROVE AFTER 8 PM AS RH VALUES INCREASE
SIGNIFICANTLY.

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.

$$

CAZ511-292230-
/O.CON.KMTR.FW.W.0005.000000T0000Z-080830T0300Z/
EAST BAY HILLS AND DIABLO RANGE-
517 AM PDT FRI AUG 29 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING FOR THE EAST BAY HILLS...

HOT AND DRY CONDITIONS WILL CONTINUE AGAIN TODAY. DRY NORTH WINDS
WILL EASE THIS MORNING AS WINDS TURN WESTERLY OR ONSHORE LATER
THIS AFTERNOON AND EVENING. THE RETURN OF ONSHORE WINDS WILL MARK
A CRITICAL CHANGE IN THE WEATHER WITH RH RECOVERIES DELAYED SEVERAL
HOURS BEHIND THE ONSHORE WIND SHIFT.

CONDITIONS WILL QUICKLY IMPROVE AFTER 8 PM AS RH VALUES INCREASE
SIGNIFICANTLY.

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.

$$

000 
WWUS86 KMTR 292211
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
311 PM PDT FRI AUG 29 2008

CAZ507-300300-
/O.CON.KMTR.FW.W.0005.000000T0000Z-080830T0300Z/
NORTH BAY MOUNTAINS-
311 PM PDT FRI AUG 29 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING...

HOT AND DRY CONDITIONS WILL CONTINUE INTO THE EVENING ALONG WITH
LOCALLY GUSTY WINDS. THE RETURN OF ONSHORE WINDS WILL MARK A
CRITICAL CHANGE IN THE WEATHER WITH RH RECOVERIES DELAYED SEVERAL
HOURS BEHIND THE ONSHORE WIND SHIFT.

CONDITIONS WILL QUICKLY IMPROVE AFTER 8 PM AS RH VALUES INCREASE
SIGNIFICANTLY.

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.

$$

CAZ511-300300-
/O.CON.KMTR.FW.W.0005.000000T0000Z-080830T0300Z/
EAST BAY HILLS AND DIABLO RANGE-
311 PM PDT FRI AUG 29 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING...

HOT AND DRY CONDITIONS WILL CONTINUE INTO THE EVENING ALONG WITH
LOCALLY GUSTY WINDS. THE RETURN OF ONSHORE WINDS WILL MARK A
CRITICAL CHANGE IN THE WEATHER WITH RH RECOVERIES DELAYED SEVERAL
HOURS BEHIND THE ONSHORE WIND SHIFT.

CONDITIONS WILL QUICKLY IMPROVE AFTER 8 PM AS RH VALUES INCREASE
SIGNIFICANTLY.

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.

$$

000 
WWUS86 KMTR 300319
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
819 PM PDT FRI AUG 29 2008

CAZ507-511-301400-
/O.EXP.KMTR.FW.W.0005.000000T0000Z-080830T0300Z/
/O.NEW.KMTR.FW.A.0005.080901T0600Z-080902T1800Z/
NORTH BAY MOUNTAINS-EAST BAY HILLS AND DIABLO RANGE-
819 PM PDT FRI AUG 29 2008

...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY EVENING THROUGH
TUESDAY MORNING IN THE NORTH AND EAST BAY HILLS PLUS DIABLO RANGE FOR
STRONG GUSTY WINDS COMBINED WITH VERY HIGH FUEL LEVELS...
...RED FLAG WARNING HAS EXPIRED...

THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS
ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SUNDAY
EVENING THROUGH TUESDAY MORNING. THE RED FLAG WARNING IS NO LONGER
IN EFFECT.

A SIGNIFICANT TROUGH WILL DIVE INTO NORTHERN CALIFORNIA ON SUNDAY
WHICH WILL CAUSE GUSTY SOUTHWESTERLY WINDS TO DEVELOP AHEAD OF IT OVER
MANY HIGHER ELEVATION LOCATIONS IN THE NORTH AND EAST BAY. BY
EARLY MONDAY THE TROUGH WILL MOVE OFF TO THE EAST WHICH WILL BRING
GUSTY NORTHERLY WINDS TO OUR AREA. ALTHOUGH COOLER TEMPERATURES
CAN BE EXPECTED ALONG WITH BETTER HUMIDITY RECOVERIES THAN WHAT
WERE EXPERIENCED THIS WEEK...INDICATIONS ARE THAT WINDS MAY GUST
WELL OVER 40 MPH IN HIGHER ELEVATIONS WHICH WILL CAUSE A DANGEROUS
FIRE SITUATION DUE TO EXTREMELY HIGH FUEL LEVELS.

THIS FIRE WEATHER WATCH WILL LIKELY BE UPGRADED TO A RED FLAG
WARNING AS THE EVENT GETS CLOSER. 

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE
RED FLAG WARNINGS.

$$


BELL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA CA
1045 PM PDT MON AUG 25 2008

.DISCUSSION...AS OF 9:00 PM PDT MONDAY...CURRENT WATER VAPOR
SATELLITE IMAGERY SHOWS AN UPPER TROUGH MOVING INLAND OVER THE PAC NW
AND NORTHERN CA. PASSAGE OF THE UPPER TROUGH HAS TRIGGER BRISK
NORTHWEST WINDS OVER THE COASTAL WATERS...AND LOCALLY IN THE HILLS.
THESE WINDS MIXED DRIER AIR INTO THE BOUNDARY LAYER AND BY EARLY
EVENING ALL LOW CLOUDS HAD CLEARED FROM THE COAST. WE MAY SEE A FEW
LOW CLOUDS REDEVELOP LOCALLY NEAR THE OCEAN OVERNIGHT...MAINLY IN
AREAS OF UPSLOPE IN NW FLOW...BUT THOSE PATCHY CLOUDS WILL CLEAR BY
MID MORNING TUESDAY. THEREAFTER...CLEAR SKIES ARE FORECAST ACROSS THE
ENTIRE FORECAST AREA THROUGH MOST OF THE REMAINDER OF THE WEEK AS
LIGHT OFFSHORE FLOW PREVAILS.

THERE ARE TWO PRIMARY FORECAST CHALLENGES THIS WEEK: HOW HOT IT WILL
BE AND WHETHER THERE WILL BE ENOUGH WIND IN THE HILLS TO RAISE FIRE
WEATHER CONCERNS. THE AIRMASS ALOFT IS NOT FORECAST TO WARM MUCH AT
ALL ON TUESDAY. BUT THE COMBINATION OF A DRIER AIRMASS...NORTHERLY
WINDS...AND A FULL DAY OF SUN WILL RESULT IN TEMPERATURES WARMING
ABOVE NORMAL ACROSS THE ENTIRE AREA. THE WARMEST DAYS THIS WEEK ARE
EXPECTED TO BE WEDNESDAY AND THURSDAY. A 590-PLUS DM H5 RIDGE IS
FORECAST TO BUILD OVER CA BY WEDNESDAY. STRONG SUBSIDENCE UNDER THE
RIDGE WILL PRODUCE GOOD AIRMASS WARMING. IN ADDITION...THE SURFACE
THERMAL TROUGH WILL SHIFT TO A POSITION JUST OFFSHORE AND LIGHT
OFFSHORE FLOW WILL BECOME BETTER ESTABLISHED. BY WEDNESDAY
TEMPERATURES WILL WARM TO THE 70S AND 80S NEAR THE OCEAN...INTO THE
90S FOR INLAND AREAS...WITH THE HOTTEST INLAND VALLEYS FORECAST TO
CLIMB PAST 100. THURSDAY LOOKS MUCH THE SAME AS WEDNESDAY...EXCEPT
PERHAPS A FEW DEGREES WARMER...ESPECIALLY INLAND. A FORECAST UPDATE
WAS COMPLETED EARLIER THIS EVENING TO INCREASE HIGH TEMPERATURES BY
AT LEAST A FEW DEGREES FOR MUCH OF OUR FORECAST AREA FROM TUESDAY
THROUGH THURSDAY. HIGH TEMPS IN CURRENT FORECAST ARE GENERALLY A FEW
DEGREES ABOVE MOS GUIDANCE. THIS IS BECAUSE MOS TYPICALLY UNDER-
FORECASTS HIGHS DURING WARM SPELLS LIKE THIS.

ALTHOUGH WARM...FORECAST TEMPERATURES ARE CURRENTLY EXPECTED TO
REMAIN JUST BELOW LEVELS NECESSARY FOR HEAT ADVISORIES OR EXCESSIVE
HEAT WATCHES/WARNINGS. AN EXCESSIVE HEAT WATCH WILL NEED TO BE ISSUED
FOR AT LEAST PORTIONS OF OUR AREA IF TEMPERATURES ARE INCREASED MUCH
BEYOND WHAT IS CURRENTLY FORECAST.

WINDS: SEE FIRE WEATHER DISCUSSION THAT FOLLOWS.

GRADUAL COOLING IS EXPECTED FROM FRIDAY THROUGH THE UPCOMING
WEEKEND...FIRST AT THE COAST ON FRIDAY AND THEN INLAND OVER THE
WEEKEND...AS THE UPPER RIDGE SHIFTS SLOWLY EAST AND ONSHORE WINDS
DEVELOP AND THEN INCREASE.

&&

.FIRE WEATHER...BREEZY CONDITIONS CURRENTLY EXIST IN THE
HILLS...BUT HUMIDITY LEVELS HAVE NOT DROPPED SIGNIFICANTLY YET. WINDS
ARE EXPECTED TO GRADUALLY EASE OVERNIGHT...EXCEPT PERHAPS LOCALLY
OVER THE HIGHER ELEVATIONS OF THE NORTH BAY. PRIMARY CONCERN FROM A
FIRE WEATHER STANDPOINT IS IF THERE WILL BE MUCH WIND BEGINNING LATE
TOMORROW AND CONTINUING THROUGH THURSDAY...THE TIME FRAME WHEN THE
WARMEST AND DRIEST CONDITIONS WILL EXIST. CURRENT MODEL DATA
INDICATE THAT WINDS WILL REMAIN LIGHT FROM THE NORTH TO NORTHEAST
ACROSS MOST OF THE REGION. HOWEVER...THE 00Z NAM INDICATES SOME
INCREASE IN WINDS OVER THE HILLS OF NAPA COUNTY LATE TUESDAY NIGHT
AND WEDNESDAY MORNING. AND...THE 18Z GFS SHOWS A SLIGHTLY STRONGER
OFFSHORE GRADIENT ON WEDNESDAY NIGHT COMPARED TO TUESDAY NIGHT. GIVEN
THE VERY POOR OVERNIGHT HUMIDITY RECOVERIES EXPECTED TUESDAY NIGHT
AND WEDNESDAY NIGHT...EVEN MODEST OFFSHORE WINDS WILL RESULT IN
HEIGHTENED FIRE DANGER. THUS...WILL MAINTAIN A FIRE WEATHER WATCH FOR
THE HIGHER ELEVATIONS OF NAPA COUNTY FROM LATE TUESDAY NIGHT THROUGH
THURSDAY AFTERNOON. CURRENT MODEL DATA INDICATE THAT THESE LOCALLY
STRONGER WINDS MAY REACH SOUTH INTO CONTRA COSTA COUNTY AS WELL...SO
WE MAY NEED TO CONSIDER  INCLUDING THE EAST BAY HILLS IN THE WATCH
DEPENDING ON WHAT THE COMPLETE SET OF 00Z MODEL DATA SHOW.

&&

.AVIATION...AS OF 10:45 PM PDT MONDAY...AS OF 10 PM THE NORTHERLY
GRADIENT FROM ACV TO SFO WAS UP TO 7.2 MB AND STRATUS HAD CLEARED
FROM THE ENTIRE COAST. A FEW PATCHES OF STRATUS MAY REDEVELOP ALONG
THE SAN MATEO COUNTY COAST AND NEAR THE MONTEREY PENINSULA
OVERNIGHT...BUT THE STRONG NORTHERLY GRADIENT WILL KEEP STRATUS OUT
OF SF BAY AND VFR CONDITIONS WILL PREVAIL AT SF BAY AREA TERMINALS
OVERNIGHT. LOW CIGS MAY AT KMRY DEVELOP FOR A FEW HOURS LATE TONIGHT.
CLEAR SKIES ARE EXPECTED IN ALL AREAS BY MID MORNING TUESDAY. LIGHT
WEST TO NORTHWEST WINDS WILL CONTINUE THROUGH TUESDAY MORNING.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
       .TNGT...SCA...ALL WATERS EXCEPT MRY BAY.
       .LATE TUE NIGHT THROUGH THURSDAY AFTERNOON...
        FIRE WEATHER WATCH FOR THE NAPA HILLS.

PUBLIC FORECAST: DYKEMA
AVIATION/MARINE: DYKEMA
FIRE WEATHER: LARRY/MHS/DYKEMA

NWS ON THE WEB AT WEATHER.GOV/SANFRANCISCO

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
305 PM PDT MON AUG 25 2008

CAZ507-262215-
NORTH BAY MOUNTAINS-
305 PM PDT MON AUG 25 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SAN FRANCISCO BAY AREA AND
MONTEREY BAY AREA.

.DAY ONE...MONDAY AFTERNOON AND MONDAY NIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

LOW HUMIDITY COMBINED WITH A LIGHT TO MODERATE NORTHEAST FLOW HAS
LED TO THE ISSUANCE OF A FIRE WEATHER WATCH FOR THE NAPA HILLS
FROM LATE TUESDAY NIGHT THROUGH THURSDAY AFTERNOON.

** FIRE WEATHER WATCH FOR THE NAPA HILLS FROM LATE TUESDAY NIGHT
 THROUGH THURSDAY AFTERNOON (SFORFWMTR OR WMO HEADER WWUS86 KMTR)***

SPOTTER ACTIVATION WILL NOT BE NEEDED.