Wednesday, October 26, 2011

[californiadisasters] Red Flag Warnings For NorCal (10/26/11-AM)



...RED FLAG WARNING IN EFFECT TODAY THROUGH EARLY THURSDAY MORNING
FOR THE NORTH AND EAST BAY HILLS DUE TO GUSTY OFFSHORE WINDS AND
LOW RELATIVE HUMIDITY VALUES...

.DRY NORTHERLY WINDS WILL PREVAIL ACROSS THE NORTH AND EAST BAY
HILLS. THE STRONGEST WINDS WILL OCCUR THROUGH ABOUT MIDDAY
TODAY. HOWEVER DRY OFFSHORE WINDS WITH VERY LOW HUMIDITY WILL
CONTINUE AGAIN TONIGHT THROUGH SUNRISE THURSDAY...ESPECIALLY IN THE
EAST BAY HILLS.

CAZ507-262300-
/O.CON.KMTR.FW.W.0003.000000T0000Z-111027T1300Z/
NORTH BAY MOUNTAINS-
319 AM PDT WED OCT 26 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 AM PDT THURSDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR THE NORTH BAY HILLS ABOVE
1000 FEET IN MARIN/SONOMA AND NAPA COUNTIES...

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

* AFFECTED AREA...HILLS ABOVE 1000 FEET IN MARIN/SONOMA AND NAPA
COUNTIES. THE AREA OF STRONGEST WINDS WILL BE THE HILLS OF
NORTHERN AND EASTERN NAPA COUNTY AS WELL AS AROUND MOUNT ST
HELENA.

* WINDS...NORTH 10 TO 20 MPH WITH GUSTS UP TO 35 MPH.

* RELATIVE HUMIDITY...AS LOW AS 14 PERCENT.

* IMPACTS...ANY IGNITIONS DURING THE PERIOD OF STRONGEST WINDS
COULD LEAD TO NEW FIRE STARTS THAT WILL BE DIFFICULT TO
SUPPRESS WITH RAPID RATES OF SPREAD.

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.

&&

$$

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
319 AM PDT WED OCT 26 2011

...RED FLAG WARNING IN EFFECT TODAY THROUGH EARLY THURSDAY MORNING
FOR THE NORTH AND EAST BAY HILLS DUE TO GUSTY OFFSHORE WINDS AND
LOW RELATIVE HUMIDITY VALUES...

.DRY NORTHERLY WINDS WILL PREVAIL ACROSS THE NORTH AND EAST BAY
HILLS. THE STRONGEST WINDS WILL OCCUR THROUGH ABOUT MIDDAY
TODAY. HOWEVER DRY OFFSHORE WINDS WITH VERY LOW HUMIDITY WILL
CONTINUE AGAIN TONIGHT THROUGH SUNRISE THURSDAY...ESPECIALLY IN THE
EAST BAY HILLS.

CAZ511-262300-
/O.CON.KMTR.FW.W.0003.000000T0000Z-111027T1300Z/
EAST BAY HILLS AND DIABLO RANGE-
319 AM PDT WED OCT 26 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 AM PDT THURSDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR THE EAST BAY HILLS AND DIABLO
RANGE ABOVE 1000 FEET IN ELEVATION...

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

* AFFECTED AREA...THE EAST BAY HILLS OF ALAMEDA AND CONTRA COSTA
COUNTY AS WELL AS THE DIABLO RANGE OF SANTA CLARA COUNTY. THE
STRONGEST WINDS WILL OCCUR LATE TONIGHT THROUGH MIDDAY
WEDNESDAY ACROSS THE EAST BAY HILLS.

* WINDS...NORTH 10 TO 20 MPH WITH GUSTS UP TO 35 MPH.

* RELATIVE HUMIDITY...AS LOW AS 15 PERCENT.

* IMPACTS...ANY IGNITIONS DURING THE PERIOD OF STRONGEST WINDS
COULD LEAD TO NEW FIRE STARTS THAT WILL BE DIFFICULT TO
SUPPRESS WITH RAPID RATES OF SPREAD.

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.

&&

$$

FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SANFRANCISCO (ALL LOWER CASE)

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
409 AM PDT WED OCT 26 2011

CAZ264-270000-
/O.CON.KSTO.FW.W.0003.000000T0000Z-111027T1400Z/
LAKE COUNTY PORTION OF LAKE-NAPA-SONOMA UNIT-
409 AM PDT WED OCT 26 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 AM PDT THURSDAY FOR
GUSTY WINDS AND LOW HUMIDITY FOR FIRE ZONE 264...

* AFFECTED AREA: IN CALIFORNIA...FIRE ZONE 264 LAKE COUNTY
PORTION OF LAKE-NAPA-SONOMA UNIT.

* WIND: SUSTAINED NORTH TO NORTHEAST WINDS 5 TO 15 MPH IN
VALLEYS AND 15 TO 25 MPH OVER RIDGES ALONG WITH LOCAL GUSTS TO 35
MPH ARE EXPECTED TONIGHT THROUGH WEDNESDAY NIGHT. WINDS ARE
EXPECTED TO DECREASE BY THURSDAY MORNING.

* HUMIDITY: POOR HUMIDITY RECOVERY OF 25 TO 35 PERCENT IS
EXPECTED OVER RIDGES AND AT MID SLOPES TONIGHT AND WEDNESDAY
NIGHT. HUMIDITY RECOVERY WILL BE BETTER IN VALLEYS AND WIND
SHELTERED AREAS. HUMIDITY WILL DROP INTO THE TEENS WEDNESDAY
AFTERNOON AS WINDS BEGIN TO DROP OFF.

* IMPACTS: THE COMBINATION OF LOW HUMIDITY...DRY AND GUSTY
NORTHEAST WINDS AND AREAS OF DRY LARGER FUELS WILL CREATE
CONDITIONS CONDUCIVE FOR INCREASED FIRE ACTIVITY AT THE
HIGHER ELEVATIONS. THERE IS A LOT OF GREEN GRASS AT THE LOWER
ELEVATIONS...SO THE CONCERN IS NOT AS GREAT IN THE VALLEYS.

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.

&&

$$


HTTP://WEATHER.GOV/SACRAMENTO
Source: http://forecast.weather.gov/wwamap/wwatxtget.php?cwa=mtr&wwa=red%20flag%20warning

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