Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 230856
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0356 AM CDT TUE OCT 23 2007
VALID 231200Z - 241200Z
...EXTREMELY CRITICAL FIRE WEATHER AREA FOR THE MTNS AND INTERIOR
VALLEYS OF SRN CA...
...CRITICAL FIRE WEATHER AREA FOR THE COASTAL VALLEYS OF SRN CA...
...CRITICAL FIRE WEATHER AREA FOR SRN AZ...
...SYNOPSIS...
AN UPPER LOW WILL REMAIN NEARLY STATIONARY OVER THE LOWER MS VALLEY
THROUGH THE PERIOD. IN THE WAKE OF THIS SYSTEM...AN UPPER RIDGE WILL
CONTINUE TO BUILD EWD INTO THE GREAT BASIN THROUGH THE PERIOD. A
BROAD AREA OF SFC HIGH PRESSURE WILL REMAIN CENTERED OVER THE GREAT
BASIN...BUT WILL SLOWLY WEAKEN THROUGH THE PERIOD. THIS HIGH
PRESSURE AREA WILL PROVIDE FOR A CONTINUATION OF STRONG OFFSHORE
PRESSURE/THERMAL GRADIENTS ACROSS PORTIONS OF THE SOUTHWEST WHICH
WILL RESULT IN ANOTHER DAY OF CRITICAL/EXTREMELY CRITICAL FIRE
WEATHER CONDITIONS OVER SRN CA AND PORTIONS OF SRN AZ.
ELSEWHERE...GUSTY NWLY WINDS WILL DEVELOP OVER THE SRN PLAINS
IMMEDIATELY IN THE WAKE OF THE UPPER TROUGH. MILD TEMPERATURES AND
LOW RH READINGS WILL OCCUR OVER MUCH OF WRN/CENTRAL AND SRN TX ALONG
WITH THESE WINDS SUPPORTING NEAR CRITICAL FIRE WEATHER CONDITIONS.
...EXTREMELY CRITICAL FIRE WEATHER AREA - THE MTNS/INTERIOR VALLEYS
OF SRN CA...
PRIMARY CONDITIONS: SUSTAINED NELY WINDS FROM 35-45 MPH WITH GUSTS
OVER 75 MPH...MIN RH READINGS FROM 4-8 PERCENT...LONG TERM DROUGHT
VERY STRONG OFFSHORE WIND EVENT WILL CONTINUE EARLY IN THE PERIOD
/12-20Z/ ACROSS THE INTERIOR VALLEYS/MTNS OF SRN CA. THE STRONGEST
WINDS /SUSTAINED UP TO 50 MPH WITH GUSTS OVER 75 MPH/ WILL OCCUR
THROUGH/BELOW PASSES AND CANYONS. STRONG SUBSIDENCE AND PRESENCE OF
THE UPPER RIDGE CENTERED OVER NRN CA WILL PRODUCE NEAR RECORD HIGH
TEMPERATURES IN THE 90S TO NEAR 100 F IN LOWER ELEVATIONS AND
WIDESPREAD 4-8 PERCENT RH READINGS DURING THE DAY. WINDS WILL
DIMINISH DURING THE AFTERNOON HOURS...BEFORE RESTRENGTHENING
OVERNIGHT SUPPORTING NO RH RECOVERY IN HIGHER TERRAIN OVERNIGHT.
HOWEVER...A WEAKENING OF OFFSHORE GRADIENTS /COMPARED TO THE LAST 2
DAYS/ SHOULD SUPPORT AT LEAST A 10-20 MPH REDUCTION IN WIND GUSTS
WITH MAX GUSTS AROUND 50 MPH EXPECTED TONIGHT.
...CRITICAL FIRE WEATHER AREA - COASTAL VALLEYS OF SRN CA...
PRIMARY CONDITIONS: SUSTAINED NELY WINDS OF 20-30 MPH WITH GUSTS
OVER 40 MPH...MIN RH READINGS 4-10 PERCENT...LONG TERM DROUGHT
IN THE COASTAL VALLEYS WEAKER WINDS WILL OCCUR THAN OVER THE
INTERIOR VALLEYS/MTNS OF SRN CA. HOWEVER...NELY WINDS WILL STILL
AVERAGE FROM 20-30 MPH WITH GUSTS OVER 40 MPH THIS MORNING /THROUGH
20Z/. WEAKENING OFFSHORE GRADIENTS OVERNIGHT SHOULD LIMIT SUSTAINED
WINDS TO LESS THAN 20 MPH. LOW DWPTS AND NEAR RECORD HIGH
TEMPERATURES IN THE 90S TO NEAR 100 F WILL PRODUCE VERY LOW RH
READINGS FROM 4-8 PERCENT. WEAKER WINDS OVERNIGHT SHOULD SUPPORT
SOME RH RECOVERY /UP TO 30 PERCENT/ ESPECIALLY ALONG THE IMMEDIATE
COASTLINE.
...CRITICAL FIRE WEATHER AREA - SRN AZ...
PRIMARY CONDITIONS: SUSTAINED E-NE WINDS FROM 15-25 MPH WITH GUSTS
OVER 30 MPH...MIN RH READINGS FROM 5-10 PERCENT...LONG TERM DROUGHT
A STRONG PRESSURE/THERMAL GRADIENT WILL EXIST BETWEEN SWRN NM AND
THE LOWER DESERTS OF SWRN AZ. THE RESULT WILL BE MODERATE E-NELY
WINDS FROM 20-30 MPH WITH HIGHER GUSTS ESPECIALLY DURING THE LATE
MORNING INTO THE MID-AFTERNOON HOURS. VERY DRY LOW LEVELS WITH MIN
RH READINGS FROM 5-10 PERCENT COMBINED WITH THESE WINDS WILL SUPPORT
A CRITICAL FIRE WEATHER THREAT OVER SERN/SCENTRAL AZ.
...SRN HIGH PLAINS SEWD INTO CENTRAL/SRN TX...
TO THE WEST OF THE UPPER LOW/TROUGH OVER THE LOWER MS
VALLEY...STRONG LOW-MID LEVEL WINDS WILL BE PRESENT. DEEP MIXING
DURING THE AFTERNOON WILL SUPPORT NWLY WINDS FROM 15-25 MPH. LOW
DEWPTS IN THE 20S/30S WILL OFFSET BELOW NORMAL TEMPERATURES FROM
65-75 DEG F TO PRODUCE MIN RH READINGS FROM 15-25 PERCENT.
PRECIPITATION OVER CENTRAL/SRN TX YESTERDAY ALONG WITH MARGINAL RH
READINGS OVER WEST TX/WRN OK WILL PRECLUDE A CRITICAL FIRE WEATHER
THREAT ISSUANCE.
..CROSBIE.. 10/23/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 230857
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0357 AM CDT TUE OCT 23 2007
VALID 241200Z - 251200Z
...CRITICAL FIRE WEATHER AREA FOR THE MTNS/INTERIOR VALLEYS OF SRN
CA...
...CRITICAL FIRE WEATHER AREA FOR SERN AZ...
...SYNOPSIS...
SANTA ANA WIND EVENT WILL GRADUALLY DIMINISH DURING THE PERIOD AS
OFFSHORE GRADIENTS WEAKEN. HOWEVER...CRITICAL FIRE WEATHER
CONDITIONS ARE STILL EXPECTED IN THE MTNS/INTERIOR VALLEYS OF SRN CA
THROUGH AT LEAST EARLY AFTERNOON. A BROAD UPPER RIDGE LOCATED OVER
THE SWRN CONUS WILL CONTINUE WELL ABOVE NORMAL/NEAR RECORD HIGH
TEMPERATURES AND LOW RH READINGS OVER THIS REGION. A BROAD AREA OF
SFC HIGH PRESSURE WILL SHIFT SWD THROUGH THE ROCKIES. AS A
RESULT...MODERATE ELY GRADIENT WINDS ARE EXPECTED TO CONTINUE FOR
ONE MORE DAY OVER PORTIONS OF SRN AZ SUPPORTING CRITICAL FIRE
WEATHER CONDITIONS. ELSEWHERE...NLY WINDS WILL REMAIN MODERATE OVER
THE SRN PLAINS ON THE BACK SIDE OF A NEARLY STATIONARY UPPER LOW
LOCATED OVER THE LOWER MS VALLEY. THESE WINDS COMBINED WITH LOW
DEWPTS WILL SUPPORT NEAR CRITICAL FIRE WEATHER CONDITIONS. AS A
STRONG UPPER TROUGH MOVES INTO THE PAC NW DURING THE
PERIOD...STRENGTHENING LOW LEVEL WINDS AND WARM TEMPERATURES WILL
ALSO PRODUCE NEAR CRITICAL FIRE WEATHER CONDITIONS OVER THE NRN HIGH
PLAINS.
...CRITICAL FIRE WEATHER AREA - THE MTNS/INTERIOR VALLEYS OF SRN
CA...
PRIMARY CONDITIONS: SUSTAINED ENELY WINDS FROM 20-30 MPH WITH GUSTS
OVER 50 MPH THROUGH EARLY AFTERNOON...LOW RH READINGS FROM 4-8
PERCENT...LONG TERM DROUGHT
OFFSHORE GRADIENTS ARE EXPECTED TO WEAKEN TO AROUND 6 MB BY THE
START OF THE PERIOD. HOWEVER...THIS WILL SUPPORT SUSTAINED ENELY
WINDS FROM 20-30 MPH WITH GUSTS OVER 50 MPH IN THE HIGHER TERRAIN OF
SRN CA /ESPECIALLY THROUGH/BELOW PASSES AND CANYONS/. THESE WINDS
SHOULD REMAIN ABOVE CRITICAL LEVELS THROUGH AT LEAST 18Z...BEFORE
WEAKENING BELOW CRITICAL LEVELS DURING THE MID-LATE AFTERNOON. A
REDEVELOPMENT OF MARGINALLY CRITICAL WIND CONDITIONS MAY OCCUR IN
THE MTNS OF SAN DIEGO COUNTY OVERNIGHT /AFTER 03Z/...WITH GUSTS OVER
30 MPH POSSIBLE. MIN RH READINGS WILL AGAIN BE VERY LOW /4-8
PERCENT/ GIVEN THE PRESENCE OF THE UPPER RIDGE OVER THE AREA AND
VERY LOW DEWPTS/NEAR RECORD HIGH TEMPERATURES IN THE 90S/NEAR 100 F.
DESPITE WEAKER WINDS...POOR TO LITTLE RH RECOVERY IS EXPECTED OVER
THE HIGHER TERRAIN WED NIGHT/EARLY THUR MORNING.
...CRITICAL FIRE WEATHER AREA - SERN AZ...
PRIMARY CONDITIONS: ELY WINDS FROM 15-25 MPH WITH GUSTS UP TO 30
MPH...MIN RH READINGS FROM 10-15 PERCENT...LONG TERM DROUGHT
ALTHOUGH NOT AS STRONG AS THE OFFSHORE WINDS IN SRN CA...A ELY
PRESSURE GRADIENT WIND EVENT IS EXPECTED TO CONTINUE TOMORROW OVER
SERN AZ...SUPPORTED BY A SWD MOVING AREA OF HIGH PRESSURE OVER THE
SRN ROCKIES AND LOWER PRESSURE OVER THE NRN GULF OF CA. ELY WINDS
WILL BE THE STRONGEST DURING THE LATE MORNING THROUGH MID
AFTERNOON...WITH SUSTAINED WINDS UP TO 25 MPH. A VERY DRY AIRMASS
WITH MIN RH READINGS FROM 10-15 PERCENT COMBINED WITH THESE WINDS
WILL SUPPORT A CRITICAL FIRE WEATHER THREAT.
...SRN PLAINS...
ON THE BACKSIDE OF THE NEARLY STATIONARY UPPER LOW OVER THE LOWER MS
VALLEY...A STRONG LOW LEVEL GRADIENT COMBINED WITH AFTERNOON
HEATING/MIXING WILL SUPPORT THE DEVELOPMENT OF NLY WINDS FROM 15-25
MPH. RELATIVELY LOW RH READINGS FROM 25-35 PERCENT COMBINED WITH
THESE WINDS WILL PRODUCE NEAR CRITICAL FIRE WEATHER CONDITIONS.
RECENT PRECIPITATION OVER MOST OF THIS AREA AND MARGINAL RH READINGS
ARE EXPECTED TO PRECLUDE CRITICAL FIRE WEATHER CONDITIONS.
...NRN HIGH PLAINS...
AHEAD OF A NRN STREAM UPPER TROUGH MOVING INTO THE PAC NW/WRN
CANADA...A STRENGTHENING AREA OF LOW PRESSURE OVER THE CANADIAN
PRAIRIES AND INCREASING MID LEVEL WINDS WILL SUPPORT THE DEVELOPMENT
OF SSWLY WINDS FROM 15-25 MPH. NEAR RECORD HIGH TEMPERATURES IN THE
70S/LOWER 80S AND LOW RH READINGS FROM 20-25 PERCENT WILL PRODUCE
NEAR CRITICAL FIRE WEATHER CONDITIONS. AREA WILL BE MONITORED FOR
UPGRADE IN A LATER OUTLOOK.
..CROSBIE.. 10/23/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...