Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 110944
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0344 AM CST SUN NOV 11 2007
VALID 111200Z - 121200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
THE LARGE SCALE NEGATIVELY-TILTED TROUGH ENTERING THE WESTERN UNITED
STATES WILL AMPLIFY OVER THE FORECAST PERIOD AND WILL MOVE INTO THE
CENTRAL ROCKIES BY MONDAY MORNING. A COLD FRONT ASSOCIATED WITH
THIS SYSTEM WILL MOVE THROUGH THE UPPER MIDWEST THROUGH SOUTHERN
CALIFORNIA BRINGING PRECIPITATION TO PORTIONS OF THE WESTERN
TWO-THIRDS OF THE U.S. AHEAD OF THIS UPPER-LEVEL THROUGH...A LEE
TROUGH WILL REMAIN ACROSS THE HIGH AND CENTRAL PLAINS...WITH SOME
LOW RELATIVE HUMIDITY VALUES BEHIND A DRYLINE IN NEW MEXICO AND
SOUTHEAST COLORADO. ELSEWHERE IN THE COUNTRY...A UPPER-LEVEL RIDGE
WILL BUILD OVER THE EAST COAST...AND A SURFACE HIGH PRESSURE SYSTEM
WILL KEEP DRY AIR IN PLACE OVER THE SOUTHEAST STATES...WITH SOME LOW
RELATIVE HUMIDITY VALUES EXPECTED.
...SOUTHEASTERN STATES...
A SURFACE HIGH PRESSURE SYSTEM OVER THE EAST COAST WILL KEEP WIND
SPEEDS LIGHT OVER THE REGION DURING SUNDAY...BUT THE DRY AIRMASS IN
PLACE WILL CONTINUE AS IN PREVIOUS DAYS...AND RELATIVE HUMIDITY
VALUES WILL FALL SLIGHTLY BELOW CRITICAL VALUES IN SOME AREAS FOR A
FEW HOURS DURING THE AFTERNOON. THE LOWEST RELATIVE HUMIDITY VALUES
ARE EXPECTED TO BE AROUND 20 TO 25 PERCENT. GIVEN THE LIGHT WIND
SPEEDS AND SEASONABLE TEMPERATURES...A CRITICAL FIRE WEATHER RISK IS
NOT NEEDED.
...HIGH PLAINS...
A LEE TROUGH WILL EXIST OVER THE HIGH PLAINS AND GREAT PLAINS
THROUGH THE FORECAST PERIOD...AND A WEAK DRYLINE WILL DEVELOP AND
PERSIST FROM THE KS/CO BORDER SOUTHWARD TO THE TX/NM BORDER. BEHIND
THE DRYLINE...RELATIVE HUMIDITY VALUES WILL DROP INTO THE TEENS AND
PERHAPS SINGLE DIGITS DURING THE AFTERNOON...AND TEMPERATURES WILL
BE FAIRLY WARM IN THE 70S F....BUT LIGHT WIND SPEEDS OF 5 TO 15 MPH
WILL HELP TO KEEP THE FIRE WEATHER RISK AT A MINIMUM.
..LEVIT.. 11/11/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 110945
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0345 AM CST SUN NOV 11 2007
VALID 121200Z - 131200Z
...CRITICAL FIRE WEATHER AREA FOR SOUTHERN CA...
...SYNOPSIS...
THE LARGE AMPLITUDE TROUGH OVER THE WESTERN UNITED STATES WILL MOVE
INTO THE MIDWEST AND WEAKENS SOMEWHAT AS THE UPPER-LEVEL LOW
PRESSURE SYSTEM OVER SOUTHERN CALIFORNIA MOVES SOUTH AND BECOMES
CUT-OFF FROM THE LARGE-SCALE FLOW. A HIGH PRESSURE SYSTEM WILL
BUILD INTO THE GREAT BASIN AFTER THE PASSAGE OF THE LOW...AND SANTA
ANA WIND CONDITIONS ARE EXPECTED IN SOUTHWESTERN CALIFORNIA. A
SURFACE HIGH PRESSURE WILL REMAIN IN THE SOUTHEASTERN STATES AND
SOME LOW RH VALUES CAN BE EXPECTED DURING THE AFTERNOON HOURS. IN
THE CENTRAL PART OF THE U.S...A COLD FRONT WILL MOVE THROUGH WITH
COOLER TEMPERATURES AND SOME PRECIPITATION.
...CRITICAL FIRE WEATHER AREA - SOUTHERN CA...
PRIMARY CONDITIONS: OFFSHORE FLOW WITH STRONG AND GUSTY
WINDS...DROUGHT
THE UPPER-LEVEL LOW PRESSURE SYSTEM CURRENTLY OFF THE COAST OF CA
WILL MOVE SOUTHEASTWARD AND EVENTUALLY BECOME CUT-OFF TO THE WEST OF
THE BAJA PENINSULA. ASSOCIATED WITH THIS FEATURE WILL BE A COLD
FRONT THAT WILL MOVE THROUGH THE AREA ON SUNDAY EVENING /DAY
1/...POSSIBLY BRINGING SOME LIGHT RAIN TO PORTIONS OF THE AREA...BUT
SOME DRIER AIR WILL MOVE IN BEHIND THE FRONT. ADDITIONALLY...A
SURFACE HIGH PRESSURE SYSTEM WILL BUILD INTO THE GREAT BASIN...AND
WIND PROFILES WILL BECOME FAVORABLE FOR A WEAK TO MODERATE SANTA ANA
EVENT OVER THE REGION. OFF-SHORE WIND SPEEDS ARE EXPECTED TO BE
AROUND 15 TO 25 MPH WITH HIGHER GUSTS. THE STRONG WIND SPEEDS ARE
THE MAIN REASON FOR THE CRITICAL RISK...AS EXCEPTIONALLY LOW
RELATIVE HUMIDITY VALUES ARE NOT FORECAST...THOUGH SOME DRYING CAN
BE EXPECTED WITH DOWNSLOPE WINDS IN CANYONS.
THANKS TO SGX AND LOX FOR ADDITIONAL COORDINATION.
...SOUTHEASTERN STATES...
AS IN THE PREVIOUS SEVERAL DAYS...THE DRY AIR MASS IN PLACE WILL
REMAIN...AND RH VALUES WILL FALL BELOW 30 PERCENT FOR A FEW HOURS
DURING THE AFTERNOON ON MONDAY. WIND SPEEDS WILL REMAIN LIGHT...AND
WHILE TEMPERATURES WARM SLIGHTLY...CRITICAL FIRE CONDITIONS ARE NOT
EXPECTED.
..LEVIT.. 11/11/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...