Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 280810
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0310 AM CDT THU AUG 28 2008
VALID 281200Z - 291200Z
...CRITICAL FIRE WEATHER AREA FOR NORTHERN CALIFORNIA...
...SYNOPSIS...
STRONG ZONAL FLOW CONTINUES OVER THE NWRN U.S. AS A SHORTWAVE
THROUGH MOVES FROM THE NRN PLAINS TO THE GREAT LAKES. SURFACE HIGH
PRESSURE BUILDS EWD THROUGH THE NWRN CONUS...CAUSING BREEZY WLY
SURFACE WINDS OVER NRN MT. BUT TEMPERATURES ACROSS THIS REGION ARE
RELATIVELY COOL AND GENERALLY IN THE MID 60S TO LOWER 70S WITH
MINIMUM RH REMAINING AT OR ABOVE 20 PERCENT. FARTHER SOUTH...A VERY
DRY AIRMASS RESIDES BENEATH THE FLAT UPPER RIDGE EXTENDING FROM THE
ERN PACIFIC TO THE SRN PLAINS. THE HOT WEATHER WILL CONTINUE IN
CA...WITH OFFSHORE FLOW BRINGING CRITICAL CONDITIONS TO NWRN CA. A
COLD FRONT WILL MOVE THROUGH THE CENTRAL PLAINS THIS AFTERNOON...
WITH INCREASING NELY SURFACE WINDS AND MODERATELY LOW RH /AT OR
ABOVE 20 TO 25 PERCENT/ IN ITS WAKE. SHOWERS AND THUNDERSTORMS AND A
SEASONABLY HUMID AIRMASS COVER THE SRN/ERN PORTION OF THE CONUS.
...CRITICAL FIRE WEATHER AREA - NRN CA...
PRIMARY CONDITIONS: HOT...VERY LOW RH...BREEZY TO WINDY OFFSHORE
FLOW
A THERMAL TROUGH WILL REMAIN STATIONARY NEAR THE COASTAL MOUNTAINS
OF NRN/CNTRL CA. VERY HOT TEMPERATURES AROUND 105F ARE AGAIN
EXPECTED IN THE SACRAMENTO VALLEY...WITH MINIMUM RH FALLING TO ABOUT
5 PERCENT. BREEZY TO WINDY OFFSHORE FLOW IS CREATING VERY POOR RH
RECOVERY EARLY THIS MORNING...AND SETTING THE STAGE FOR A PROLONGED
PERIOD OF CRITICAL FIRE WEATHER CONDITIONS TODAY. NELY WINDS WILL BE
STRONGEST IN THE MOUNTAIN/FOOTHILL PASSES AT NRN END OF THE
SACRAMENTO VALLEY /GUSTING OVER 30 MPH/. THE COMBINATION OF HIGH
HEAT...VERY LOW HUMIDITY...AND LOCALIZED GUSTS MAY CAUSE ISOLATED
AREAS TO APPROACH THE EXTREMELY CRITICAL THRESHOLD LATE THIS MORNING
AND INTO THE AFTERNOON. AS THE SURFACE HIGH MOVES INLAND THE
OFFSHORE PRESSURE GRADIENT SHOULD GRADUALLY WEAKEN LATE IN THE
PERIOD...ALTHOUGH THE OFFSHORE FLOW AND WARM/DRY PATTERN WILL
PERSIST INTO FRIDAY.
..BRIGHT.. 08/28/2008
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 280811
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0311 AM CDT THU AUG 28 2008
VALID 291200Z - 301200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
THE AMPLITUDE OF THE UPPER PATTERN BEGINS TO INCREASE FRIDAY...AS
THE UPPER RIDGE SHIFTS EWD INTO THE PLAINS AND A TROUGH APPROACHES
THE PACIFIC NORTHWEST. SURFACE HIGH PRESSURE WILL COVER THE CENTRAL
STATES...BUILDING SEWD IN THE WAKE OF A COLD FRONT EXTENDING FROM
THE OHIO VALLEY TO THE SRN PLAINS. THE THERMAL TROUGH OVER NWRN CA
IS SUPPRESSED SWD...AS THE SURFACE FLOW GRADUALLY TURNS ONSHORE.
SHOWERS AND THUNDERSTORMS WILL EXTEND FROM WRN NEW ENGLAND TO THE
GULF COAST...WITH MONSOON CONVECTION EXPECTED TO CONTINUE IN THE
SOUTHWEST.
...NRN CA...
RH RECOVERY THURSDAY NIGHT/FRIDAY MORNING MAY AGAIN BE POOR...AS
OFFSHORE FLOW LINGERS INTO THE MORNING HOURS. HOWEVER THE TREND IS
FOR WINDS TO DECREASE AND BECOME ONSHORE AROUND MID DAY FRIDAY.
TEMPERATURES IN THE SACRAMENTO VALLEY WILL REMAIN HOT AND OVER
100F...BUT COOLER PACIFIC AIR SHOULD BEGIN TO PENETRATE THE COASTAL
MOUNTAINS AND VALLEYS BY EARLY AFTERNOON. A COLD FRONTAL PASSAGE IS
EXPECTED FRIDAY NIGHT.
..BRIGHT.. 08/28/2008
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...