Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 121842
DAY 1 FIRE WEATHER OUTLOOK CORR 1
NWS STORM PREDICTION CENTER NORMAN OK
1242 PM CST MON NOV 12 2007
VALID 121200Z - 131200Z
CORRECTED GRAPHIC
...CRITICAL FIRE WEATHER AREA FOR SOUTHERN CA...
...CRITICAL FIRE WEATHER AREA FOR WESTERN MT/SOUTHERN ID...
...SYNOPSIS...
A PROGRESSIVE UPPER-LEVEL PATTERN WILL CONTINUE IN THE NORTHERN
STREAM AS A TROUGH MOVES THROUGH THE UPPER MIDWEST...AND IN THE
SOUTH...A CUT-OFF LOW WILL EVOLVE WEST OF THE BAJA PENINSULA. A COLD
FRONT WILL MOVE THROUGH THE GREAT LAKES...TO THE SOUTHERN
PLAINS...AND INTO SOUTHERN CALIFORNIA...WITH A SURFACE HIGH PRESSURE
SYSTEM BUILDING INTO THE GREAT BASIN WITH A WEAK SANTA ANA EVENT
EXPECTED OVER SOUTHERN CALIFORNIA. IN THE SOUTHEAST U.S...RELATIVE
HUMIDITY VALUES WILL AGAIN BRIEFLY DROP DURING THE AFTERNOON. IN
THE HIGH PLAINS...COOLER TEMPERATURES ARE EXPECTED BEHIND A COLD
FRONT THAT WILL MOVE THROUGH DURING THE AFTERNOON ON
MONDAY...KEEPING RELATIVE HUMIDITY VALUES SLIGHTLY HIGHER THAN IN
PREVIOUS DAYS. ADDITIONALLY...A STRONG SURFACE PRESSURE GRADIENT
WILL EXIST WITH A TROUGH MOVING THROUGH THE NORTHERN
ROCKIES...BRINGING STRONG WINDS SOME FIRE WEATHER RISK.
...CRITICAL FIRE WEATHER AREA - SOUTHERN CA...
PRIMARY CONDITIONS: STRONG AND GUSTY WINDS...LONG-TERM DROUGHT
THE EXPECTED SANTA ANA WIND EVENT OVER SOUTHERN CALIFORNIA HAS BEEN
GRADUALLY DIMINISHING IN STRENGTH FROM FORECAST MODEL RUN-TO-RUN
OVER THE PAST COUPLE OF DAYS...AND THIS TREND CONTINUES...IN ALL
MODELS. STRONG AND GUSTY WINDS CAN STILL BE EXPECTED IN AREAS OF
HIGH TERRAIN DURING MONDAY...AS A MODERATELY STRONG PRESSURE
GRADIENT FROM A SURFACE HIGH PRESSURE SYSTEM IN THE GREAT BASIN WILL
AID IN CREATING OFF-SHORE WIND CONDITIONS OVER SOUTHERN CALIFORNIA.
THE NEGATIVES TO THIS CRITICAL FIRE WEATHER RISK REMAIN IN THE
RELATIVE HUMIDITY VALUES...WHICH ARE NOT EXPECTED TO DROP
DRAMATICALLY BELOW VALUES OF 20 TO 30 PERCENT...EXCEPT PERHAPS IN
THE LOCAL AREAS OF STRONG DOWNSLOPE WINDS IN VALLEYS WHERE VALUES
MIGHT FALL TO 10 TO 15 PERCENT. ADDITIONALLY...SURFACE TEMPERATURES
ARE NOT WARMER THAN NORMAL. THEREFORE...A CRITICAL FIRE WEATHER
RISK WILL REMAIN ONLY FOR THOSE AREAS THAT EXPERIENCE STRONG AND
GUSTY WINDS...LIKELY IN REGIONS OF STEEP TERRAIN.
...CRITICAL FIRE WEATHER AREA - WESTERN MT/SOUTHERN ID...
PRIMARY CONDITIONS: STRONG AND GUSTY WINDS...LOW RELATIVE HUMIDITIES
CRITICAL FIRE WEATHER CONDITIONS WILL EXIST IN WESTERN MONTANA AND
SOUTHERN IDAHO AS A PRE-FRONTAL SURFACE PRESSURE THROUGH MOVES
THROUGH THE REGION ON MONDAY AFTERNOON. THE TROUGH WILL CREATE A
STRONG PRESSURE GRADIENT AND STRONG AND GUSTY SURFACE WINDS AROUND
25 TO 40 MPH WITH STRONGER GUSTS...ADDITIONALLY...SOME AREAS WILL
EXPERIENCE LOW RELATIVE HUMIDITY VALUES AS DRIER AIR MIXES DOWN
TERRAIN INTO VALLEYS...WITH VALUES FALLING TO 10 TO 20 PERCENT.
WHILE TEMPERATURES REMAIN SEASONABLY COLD FOR THE AREA...THE STRONG
SURFACE WINDS...RH VALUES...AND DRY FUELS IN AREAS DUE TO LONG-TERM
DROUGHT IN THE REGION WILL BRING A CRITICAL FIRE WEATHER RISK.
...SOUTHEASTERN STATES...
AS IN PREVIOUS DAYS...RELATIVE HUMIDITY VALUES WILL DROP BELOW 30
PERCENT FOR A FEW HOURS DURING THE AFTERNOON. LACK OF SIGNIFICANTLY
HIGH TEMPERATURES AND STRONG WIND SPEEDS WILL MITIGATE THE FIRE
WEATHER RISK.
..LEVIT.. 11/12/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 120957
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0357 AM CST MON NOV 12 2007
VALID 131200Z - 141200Z
...CRITICAL FIRE WEATHER AREA FOR MOST OF ND/EASTERN MT...
...SYNOPSIS...
A COLD FRONT WILL MOVE THROUGH THE UPPER AND CENTRAL MIDWEST DURING
THE DAY ON TUESDAY...AND A STRONG SURFACE PRESSURE GRADIENT BEHIND
THE FRONT WILL CREATE SOME STRONG AND GUSTY WINDS IN THE REGION WITH
A FIRE WEATHER RISK. IN THE SOUTHEAST...A SIMILAR AIRMASS TO THE
PAST SEVERAL DAYS REMAINS...AND SOME LOW RELATIVE HUMIDITY VALUES
WILL EXIST IN THE AFTERNOON HOURS. IN SOUTHERN
CALIFORNIA...RELATIVE HUMIDITY VALUES FALL AS A COOLER AND DRIER
AIRMASS CONTINUES TO MOVE INTO THE AREA...BUT THE PRESSURE GRADIENT
BETWEEN THE GREAT BASIN HIGH PRESSURE SYSTEM AND THE REGION RELAXES
QUITE A BIT...AND OFF-SHORE WINDS ARE EXPECTED TO WEAKEN.
FINALLY...IN THE SOUTHERN PLAINS...LOW RELATIVE HUMIDITY VALUES AND
SOME STRONG WINDS WILL EXIST IN THE AFTERNOON HOURS.
...CRITICAL FIRE WEATHER AREA - MOST OF ND/EASTERN MT...
PRIMARY CONDITIONS: STRONG AND GUSTY WINDS...LOW RH
A FAST-MOVING COLD FRONT WILL MOVE THROUGH THE UPPER MIDWEST DURING
THE AFTERNOON ON TUESDAY...AND WINDS BEHIND THE FRONT WILL BE VERY
STRONG WITH SOME AREAS OBSERVING SUSTAINED WINDS AROUND 30 TO 40 MPH
WITH HIGHER GUSTS. RELATIVE HUMIDITY VALUES WILL LIKELY DROP TO 15
TO 25 PERCENT IN AREAS...AND WHILE TEMPERATURES REMAIN FAIRLY
COOL...THE COMBINATION OF STRONG SURFACE WINDS AND MODERATELY LOW RH
WILL CREATE A FIRE WEATHER RISK.
...SOUTHERN CALIFORNIA...
THE SURFACE HIGH PRESSURE SYSTEM OVER THE GREAT BASIN WEAKENS DURING
THE DAY ON TUESDAY AND MOVES TO THE EAST...REDUCING THE SURFACE
PRESSURE GRADIENT AND RELAXING WIND SPEEDS OVER SOUTHERN CALIFORNIA.
WHILE RELATIVE HUMIDITY VALUES FALL IN THE AFTERNOON...WIND SPEEDS
WILL BE LOW ENOUGH TO HELP MITIGATE A CRITICAL FIRE WEATHER RISK.
...SOUTHERN PLAINS...
THIS AREA WILL APPROACH A CRITICAL RISK AS RELATIVE HUMIDITY VALUES
WILL FALL INTO THE SINGLE DIGITS TO TEENS DURING THE AFTERNOON HOURS
BEHIND A DEVELOPING DRYLINE...AND WIND SPEEDS AROUND 15 TO 20 MPH
CAN BE EXPECTED ALONG WITH TEMPERATURES CLIMBING INTO THE UPPER 70S
TO LOW 80S F. WITH TEMPERATURES FORECAST TO BE WARMER THAN
NORMAL...A FIRE WEATHER RISK WILL EXIST.
...SOUTHEASTERN STATES...
RELATIVE HUMIDITY VALUES WILL FALL BELOW 30 PERCENT FOR A FEW HOURS
DURING TUESDAY AFTERNOON. A CRITICAL FIRE WEATHER RISK IS NOT
EXPECTED DUE TO LIGHT SURFACE WINDS AND SEASONABLE TEMPERATURES.
..LEVIT.. 11/12/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...