Red Flag Warning 1, NWS San Francisco Bay Area, CA

000 
WWUS86 KMTR 271740
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1040 AM PDT THU AUG 27 2009

CAZ517-518-280200-
/O.EXT.KMTR.FW.W.0001.000000T0000Z-090828T1300Z/
SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST-
MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING
PINNACLES NATIONAL MONUMENT-
1040 AM PDT THU AUG 27 2009

...RED FLAG WARNING NOW IN EFFECT UNTIL 6 AM PDT FRIDAY FOR THE
HILLS OF MONTEREY AND SAN BENITO COUNTIES INCLUDING THE MONTEREY
RANGER DISTRICT OF THE LOS PADRES NATIONAL FOREST...

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

DUE TO ONGOING WILDFIRE ACTIVITY AND EXPECTED CRITICAL FIRE
WEATHER CONDITIONS A RED FLAG WARNING WILL BE IN EFFECT FOR
TODAY AND TONIGHT. RELATIVE HUMIDITY VALUES WILL FALL BELOW 10%
FOR THE WARNED AREAS TODAY WITH AFTERNOON HIGH TEMPERATURES NEAR
100 DEGREES. POOR RELATIVE HUMIDITY RECOVERIES CAN BE EXPECTED
TONIGHT WITH VALUES REMAINING BELOW 30%...ESPECIALLY ABOVE 1000
FEET.

AFTER 3 PM NORTHERLY WINDS WILL DEVELOP AND THEN INCREASE THROUGH
THE LATE AFTERNOON AND EVENING HOURS AS A WEAK UPPER LEVEL
DISTURBANCE PASSES OVER THE REGION. NORTH TO NORTHEAST WIND GUSTS
TO 25 MPH WILL BE POSSIBLE OVER THE RIDGES. WINDS ARE EXPECTED TO
GRADUALLY DIMINISH BY EARLY FRIDAY MORNING.

THE COMBINATION OF PROLONGED SINGLE DIGIT RELATIVE HUMIDITY
VALUES TODAY...POOR RELATIVE HUMIDITY RECOVERIES TONIGHT...INCREASING
NORTHERLY WINDS...TRIPLE DIGIT HEAT AND LONG TERM DROUGHT
CONDITIONS ACROSS THE REGION WILL CREATE A DANGEROUS FIRE WEATHER
SITUATION THROUGH 6 AM PDT FRIDAY MORNING.

THE WARNED AREA INCLUDES THE HILLS OF MONTEREY AND SAN BENITO
COUNTIES ABOVE 1000 FEET INCLUDING: THE MONTEREY RANGER DISTRICT OF
THE LOS PADRES FOREST...THE BRYSON WILDFIRE...FORT HUNTER LIGGETT
AND BLM LANDS OF SAN BENITO COUNTY.

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING

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 WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

CAZ516-280200-
/O.CON.KMTR.FW.W.0001.000000T0000Z-090828T0500Z/
SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO-
1040 AM PDT THU AUG 27 2009

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS
EVENING FOR THE SOUTHERN SALINAS VALLEY... 

DUE TO ONGOING WILDFIRE ACTIVITY AND EXPECTED CRITICAL FIRE
WEATHER CONDITIONS A RED FLAG WARNING WILL BE IN EFFECT FOR
TODAYS BURN PERIOD. RELATIVE HUMIDITY VALUES WILL FALL BELOW 10%
FOR THE WARNED AREAS TODAY WITH AFTERNOON HIGH TEMPERATURES NEAR
100 DEGREES. SOME RELIEF CAN BE EXPECTED TONIGHT WITH MODERATE
RELATIVE HUMIDITY RECOVERIES FOR MOST AREAS...HOWEVER A FEW SOUTHERN
INTERIOR LOCATIONS COULD EXPERIENCE POOR RECOVERIES.

AFTER 3 PM NORTHERLY WINDS WILL DEVELOP AND THEN INCREASE THROUGH
THE LATE AFTERNOON AND EVENING HOURS AS A WEAK UPPER LEVEL
DISTURBANCE PASSES OVER THE REGION. NORTH TO NORTHEAST WIND GUSTS
TO 25 MPH WILL BE POSSIBLE OVER THE RIDGES. WINDS ARE EXPECTED TO
DIMINISH EARLY TONIGHT.

THE COMBINATION OF PROLONGED SINGLE DIGIT RELATIVE HUMIDITY
VALUES TODAY...INCREASING NORTHERLY WINDS...TRIPLE DIGIT HEAT AND
LONG TERM DROUGHT CONDITIONS WILL CREATE A DANGEROUS FIRE WEATHER
SITUATION THROUGH 10 PM THIS EVENING.

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING

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 WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

MEHLE/TENTINGER

000 
WWUS86 KMTR 280146
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
646 PM PDT THU AUG 27 2009

CAZ516-280500-
/O.CON.KMTR.FW.W.0001.000000T0000Z-090828T0500Z/
SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO-
646 PM PDT THU AUG 27 2009

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PDT THIS
EVENING...

GUSTY NORTHERLY WINDS WILL CONTINUE THROUGH THE LATE AFTERNOON AND
EVENING HOURS AS A WEAK UPPER LEVEL DISTURBANCE PASSES OVER THE
REGION. NORTH TO NORTHEAST WIND GUSTS TO 25 MPH WILL BE POSSIBLE
OVER THE RIDGES. WINDS ARE EXPECTED TO DIMINISH TONIGHT.

THE COMBINATION OF PROLONGED SINGLE DIGIT RELATIVE HUMIDITY
VALUES TODAY...INCREASING NORTHERLY WINDS...TRIPLE DIGIT HEAT AND
LONG TERM DROUGHT CONDITIONS WILL CREATE A DANGEROUS FIRE WEATHER
SITUATION THROUGH 10 PM THIS EVENING.

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING

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 WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

CAZ517-518-281300-
/O.CON.KMTR.FW.W.0001.000000T0000Z-090828T1300Z/
SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST-
MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING
PINNACLES NATIONAL MONUMENT-
646 PM PDT THU AUG 27 2009

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

DUE TO ONGOING WILDFIRE ACTIVITY AND EXPECTED CRITICAL FIRE
WEATHER CONDITIONS A RED FLAG WARNING WILL BE IN EFFECT FOR TONIGHT.
RELATIVE HUMIDITY VALUES WILL FALL BELOW 10% FOR THE WARNED AREAS
TODAY WITH AFTERNOON HIGH TEMPERATURES NEAR 100 DEGREES. POOR
RELATIVE HUMIDITY RECOVERIES CAN BE EXPECTED TONIGHT WITH VALUES
REMAINING BELOW 30%...ESPECIALLY ABOVE 1000 FEET.

NORTHERLY WINDS WILL DEVELOP THIS EVENING AND THEN INCREASE THROUGH THE
LATE AFTERNOON AND EVENING HOURS AS A WEAK UPPER LEVEL DISTURBANCE
PASSES OVER THE REGION. NORTH TO NORTHEAST WIND GUSTS TO 25 MPH
WILL BE POSSIBLE OVER THE RIDGES. WINDS ARE EXPECTED TO GRADUALLY
DIMINISH BY EARLY FRIDAY MORNING.

THE COMBINATION OF PROLONGED SINGLE DIGIT RELATIVE HUMIDITY
VALUES TODAY...POOR RELATIVE HUMIDITY RECOVERIES TONIGHT...
INCREASING NORTHERLY WINDS...TRIPLE DIGIT HEAT AND LONG TERM
DROUGHT CONDITIONS ACROSS THE REGION WILL CREATE A DANGEROUS FIRE
WEATHER SITUATION THROUGH 6 AM PDT FRIDAY MORNING.

THE WARNED AREA INCLUDES THE HILLS OF MONTEREY AND SAN BENITO
COUNTIES ABOVE 1000 FEET INCLUDING: THE MONTEREY RANGER DISTRICT
OF THE LOS PADRES FOREST...THE BRYSON WILDFIRE...FORT HUNTER
LIGGETT AND BLM LANDS OF SAN BENITO COUNTY.

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING

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 WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

000 
WWUS86 KMTR 281124
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
424 AM PDT FRI AUG 28 2009

CAZ517-281900-
/O.EXT.KMTR.FW.W.0001.000000T0000Z-090828T1900Z/
SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST-
424 AM PDT FRI AUG 28 2009

...RED FLAG WARNING NOW IN EFFECT UNTIL NOON PDT TODAY...

THE RED FLAG WARNING IS NOW IN EFFECT UNTIL NOON PDT TODAY. 

GUSTY NORTHERLY WINDS WILL CONTINUE THROUGH THE MORNING
HOURS...DECREASING BY EARLY FRIDAY AFTERNOON.

THE COMBINATION OF POOR RELATIVE HUMIDITY RECOVERIES
OVERNIGHT...VERY LOW RELATIVE HUMIDITY VALUES THIS MORNING...GUSTY
NORTHERLY WINDS THIS MORNING...AND LONG TERM DROUGHT CONDITIONS
ACROSS THE REGION WILL CREATE A DANGEROUS FIRE WEATHER SITUATION
THROUGH NOON PDT FRIDAY.

THE WARNED AREA INCLUDES THE HILLS OF MONTEREY AND SAN BENITO
COUNTIES ABOVE 1000 FEET INCLUDING: THE MONTEREY RANGER DISTRICT
OF THE LOS PADRES FOREST...THE BRYSON WILDFIRE...THE GLORIA
WILDFIRE...FORT HUNTER LIGGETT AND BLM LANDS OF SAN BENITO
COUNTY.

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING

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 WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

CAZ518-281900-
/O.EXT.KMTR.FW.W.0001.000000T0000Z-090828T1900Z/
MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING
PINNACLES NATIONAL MONUMENT-
424 AM PDT FRI AUG 28 2009

...RED FLAG WARNING NOW IN EFFECT UNTIL NOON PDT TODAY...

THE RED FLAG WARNING IS NOW IN EFFECT UNTIL NOON PDT TODAY. 

GUSTY NORTHERLY WINDS WILL CONTINUE THROUGH THE MORNING
HOURS...DECREASING BY EARLY FRIDAY AFTERNOON.

THE COMBINATION OF POOR RELATIVE HUMIDITY RECOVERIES
OVERNIGHT...VERY LOW RELATIVE HUMIDITY VALUES THIS MORNING...GUSTY
NORTHERLY WINDS THIS MORNING...AND LONG TERM DROUGHT CONDITIONS
ACROSS THE REGION WILL CREATE A DANGEROUS FIRE WEATHER SITUATION
THROUGH NOON PDT FRIDAY.

THE WARNED AREA INCLUDES THE HILLS OF MONTEREY AND SAN BENITO
COUNTIES ABOVE 1000 FEET INCLUDING: THE MONTEREY RANGER DISTRICT
OF THE LOS PADRES FOREST...THE BRYSON WILDFIRE...THE GLORIA
WILDFIRE...FORT HUNTER LIGGETT AND BLM LANDS OF SAN BENITO
COUNTY.

PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE
FIELD OF THIS RED FLAG WARNING

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 WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$

MHS

000 
WWUS86 KMTR 281851
RFWMTR

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1151 AM PDT FRI AUG 28 2009


CAZ517-282000-
/O.EXP.KMTR.FW.W.0001.000000T0000Z-090828T1900Z/
SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST-
1151 AM PDT FRI AUG 28 2009

...RED FLAG WARNING WILL EXPIRE AT NOON PDT TODAY...

THE RED FLAG WARNING WILL EXPIRE AT NOON PDT TODAY. 

HOT AND DRY CONDITIONS WILL CONTINUE THIS AFTERNOON WITH HIGHS IN
THE 90S TO 106 WITH RELATIVE HUMIDITIES IN THE LOWER TEENS AND
EVEN THE UPPER SINGLE DIGITS. HOWEVER...THE SUSTAINED NORTHERLY
WINDS WILL LIKELY REMAIN BELOW CRITERIA FOR A RED FLAG WARNING.
WINDS MAY BRIEFLY INCREASE LATE THIS AFTERNOON AND EARLY THIS
EVENING WITH THE TYPICAL AFTERNOON SEA BREEZE THROUGH THE SALINAS
VALLEY.

DESPITE THE WEAKENING WINDS...THE HOT AND DRY CONDITIONS COMBINED WITH
THE CURRENT STATE OF FUELS IN THE REGION WILL CONTINUE THE
CRITICAL FIRE WEATHER CONDITIONS.

$$

CAZ518-282000-
/O.EXP.KMTR.FW.W.0001.000000T0000Z-090828T1900Z/
MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING
PINNACLES NATIONAL MONUMENT-
1151 AM PDT FRI AUG 28 2009

...RED FLAG WARNING WILL EXPIRE AT NOON PDT TODAY...

THE RED FLAG WARNING WILL EXPIRE AT NOON PDT TODAY. 

HOT AND DRY CONDITIONS WILL CONTINUE THIS AFTERNOON WITH HIGHS IN
THE 90S TO 106 WITH RELATIVE HUMIDITIES IN THE LOWER TEENS AND
EVEN THE UPPER SINGLE DIGITS. HOWEVER...THE SUSTAINED NORTHERLY
WINDS WILL LIKELY REMAIN BELOW CRITERIA FOR A RED FLAG WARNING.
WINDS MAY BRIEFLY INCREASE LATE THIS AFTERNOON AND EARLY THIS
EVENING WITH THE TYPICAL AFTERNOON SEA BREEZE THROUGH THE SALINAS
VALLEY.

DESPITE THE WEAKENING WINDS...THE HOT AND DRY CONDITIONS COMBINED WITH
THE CURRENT STATE OF FUELS IN THE REGION WILL CONTINUE THE
CRITICAL FIRE WEATHER CONDITIONS.

$$

MEHLE

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA CA
835 PM PDT WED AUG 26 2009

.DISCUSSION...AS OF 8:35 PM PDT WEDNESDAY...MAINLY CLEAR SKIES OVER
LAND THIS EVENING WITH A COMPRESSED MARINE LAYER/STATUS OF 1000 FEET
ALONG THE COAST. SATELLITE IMAGERY SHOWS MINIMAL STRATUS INTRUSION AT
THIS HOUR AND WITH A RELATIVELY SHALLOW MARINE LAYER AND WEAKER
ONSHORE GRADIENTS STRATUS IS NOT EXPECTED TO PENETRATE AS FAR INLAND
OR AS EARLY AS IT HAS PREVIOUS NIGHTS.

THE MAIN STORY REMAINS THE WARMER THAN USUAL TEMPERATURES EXPECTED
THURSDAY AND FRIDAY AND MORE NOTABLY THE WARMER THAN USUAL
OVERNIGHT TEMPERATURES EXPECTED THURSDAY AND FRIDAY NIGHTS. THIS
AFTERNOON TEMPERATURES ROSE INTO THE 60S ALONG THE COAST AND INTO
THE 80S AND 90S INLAND. THURSDAYS HIGHS ARE FORECAST TO INCREASE
ANYWHERE FROM 5 TO 10 DEGREES OVER TODAY HIGHS AS 850 MB TEMPS AND
HEIGHTS INCREASE OVER THE REGION. THE MERCURY INLAND SHOULD REACH
INTO THE UPPER 80S AND 90S WITH SOME LOCATIONS REACHING INTO THE
TRIPLE DIGITS IN THE WARMEST INTERIOR VALLEYS. ALSO OF NOTE IS THE
MOISTURE THAT IS ADVECTING NORTHWARD FROM WEAKENING TROPICAL STORM
IGNACIO THAT IS SPINNING OFF THE COAST OF BAJA MEXICO. MOISTURE FROM
THIS SYSTEM IS EXPECTED TO INCREASE PRECIPITABLE WATER VALUES TO
OVER 1 INCH THURSDAY NIGHT HOWEVER THE MAIN PLUME OF MOISTURE IS
PROGGED TO STAY OUT OVER THE COASTAL WATERS AND MOVE INLAND OVER
THE MENDOCINO COAST KEEPING THE GREATEST CHANCE OF THUNDERSTORMS
WEST AND NORTH OF OUR CWA. MODELS AT THIS TIME APPEAR TO BE IN
GOOD AGREEMENT HOWEVER THE SITUATIONS WILL CONTINUE TO BE WATCHED
CLOSELY.

WHILE THE REMNANTS OF IGNACIO WORK THEIR WAY TOWARD THE COAST DURING
THE LATER PART OF THIS WEEK AND INTO THE WEEKEND A LARGE UPPER LEVEL
TROUGH IS PROGGED TO DROP DOWN FROM THE GULF OF ALASKA. THE LOW
WILL SWING INTO THE PACIFIC NORTHWEST AND SPINS OFF A CLOSED LOW THAT
IS EXPECTED TO MOVE SOUTH AND THEN EAST INTO NORTHERN NEVADA AND
UTAH. ANOTHER TROUGH IS POISED TO DROP DOWN ON THE HEELS OF THE
PREVIOUS TROUGH BY THE MIDDLE OF NEXT WEEK. OVERALL THE WEATHER
WILL REMAIN DRY WITH SEASONAL TO SLIGHTLY ABOVE SEASONAL TEMPERATURES
FOR THIS TIME OF YEAR.

&&

.AVIATION...AS OF 10:40 PM WEDNESDAY...A COMPRESSED MARINE LAYER
WILL KEEP THE STRATUS OUT OF THE SFO BAY AREA UNTIL LATE TONIGHT.
CEILINGS AND VISIBILITIES WILL BE LOWERED.

VICINITY OF KSFO...VFR CONDITIONS THROUGH THE AIRPORT EVENING
RUSH HOUR. BKN-OVC CEILINGS NOT EXPECTED UNTIL 10-12Z. BASES
BELOW 1000 FEET. EARLY CLEARING TIME OF 17Z IS EXPECTED.

KSFO BRIDGE APPROACH...VFR CONDITIONS THROUGH THE AIRPORT EVENING
RUSH HOUR. BKN-OVC CEILINGS NOT EXPECTED UNTIL AFTER 12Z. BASES
BELOW 1000 FEET. EARLY CLEARING TIME OF 17Z IS EXPECTED.

MONTEREY BAY TERMINALS...CEILINGS HAVE DROPPED BELOW 500 FEET
AND VISIBILITIES ARE DOWN AS LOW AS 1-3 MILES. CLEARING
EXPECTED AFTER 17Z.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

&&

PUBLIC FORECAST: CW
AVIATION/MARINE: WJK/W PI

NWS ON THE WEB AT WEATHER.GOV/SANFRANCISCO