Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks
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FNUS21 KWNS 230741
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0241 AM CDT THU OCT 23 2003
VALID 231200Z - 241200Z
...CRITICAL FIRE WEATHER AREA FOR CENTRAL AND ERN MT / NRN WY...
...CRITICAL FIRE WEATHER AREA FOR SERN WY...
...CRITICAL FIRE WEATHER AREA FOR NRN CA...
...SYNOPSIS...
UPPER RIDGE WILL BREAK DOWN OVER THE NRN ROCKIES TODAY AS A STRONG
SHORTWAVE TROUGH BRINGS HIGH WINDS AND LITTLE MOISTURE WITH A COLD
FRONT. HIGH PRESSURE AT THE SURFACE WILL EXPAND SWD INTO THE GREAT
BASIN AND CENTRAL ROCKIES BY FRIDAY MORNING...REINFORCING THE DRY
AIRMASS ALREADY IN PLACE AND BRINGING GUSTY WINDS TO NRN CA.
FURTHER E....LOW RH WILL BE FOUND ACROSS THE SRN PLAINS AND SERN
U.S. BUT WINDS WILL BE LIGHT.
...CRITICAL FIRE WEATHER AREA 1 - CENTRAL AND ERN MT / NRN WY...
PRIMARY CONDITIONS: VERY STRONG WLY WINDS / SEVERE DROUGHT /
MARGINALLY LOW RH
A STRONG COLD FRONT WILL MOVE EWD THROUGH THE AREA TODAY. THE FRONT
WILL BEGIN OVER W CENTRAL MT AND WILL END UP ALONG THE MT/DAKOTA
BORDER BY EARLY EVENING. STRONG WLY WINDS WITH SUSTAINED SPEEDS
AVERAGING 25-35 MPH APPEAR LIKELY WITH HIGHER GUSTS. THE HIGHEST
SPEEDS WILL BE ALONG ERN SLOPES WHERE 45-55 MPH WILL BE POSSIBLE.
RH VALUES WILL BE MARGINALLY LOW AT 20-25 PERCENT DURING PEAK
HEATING.
...CRITICAL FIRE WEATHER AREA 2 - SERN WY...
PRIMARY CONDITIONS: STRONG WLY WINDS / MDT TO HIGH HAINES / LOW RH
STRONG SHORTWAVE TROUGH WILL GRAZE THIS PORTION OF THE STATE...BUT
WILL BE ENOUGH TO BRING STRONG WLY WINDS TO THE SURFACE. A VERY DRY
AIR MASS IS CURRENTLY IN PLACE. BY AFTERNOON...DRY AND UNSTABLE LOW
TO MID LEVELS WILL DEVELOP WITH MDT HAINES. DRY WLY WINDS OF 20-30
MPH WILL DEVELOP BY MIDDAY WHILE RH LEVELS DROP INTO THE LOWER TO
MIDDLE TEENS. A COLD FRONT WILL THEN MOVE THROUGH THE REGION DURING
THE EVENING HOURS AND WILL CAUSE WLY WINDS TO SHIFT TO NLY AT 20-30
MPH. GOOD RH RECOVERY AND WEAKER WINDS ARE LIKELY BY FRI MORNING AS
TEMPERATURES COOL INTO THE 30S F.
...CRITICAL FIRE WEATHER AREA 3 - NRN CA...
PRIMARY CONDITIONS: LOW RH WITH POOR OVERNIGHT RECOVERY / N AND NELY
DOWNSLOPE WINDS
INCREASING PRESSURE GRADIENTS WITH THE HIGH TO THE NE WILL CAUSE
INCREASING N AND NELY WINDS TODAY AND TONIGHT OVER NRN
CA...ESPECIALLY IN DOWNSLOPE REGIONS OF THE WRN SLOPES OF THE SIERRA
AND COASTAL RANGE. DURING THE DAY...NLY WINDS OF 10-20 MPH ARE
EXPECTED ALONG WITH LOW RH AROUND 15 PERCENT INLAND. STEEP LAPSE
RATES AND VERY HIGH DEWPOINT DEPRESSIONS WILL MAKE FOR UNSTABLE LOW
LEVELS AS WELL DURING THE AFTERNOON. WINDS WILL INCREASE OUT OF THE
NE OVERNIGHT DUE TO NOCTURNAL DRAINAGE AND AS A RESULT...RH RECOVERY
IS EXPECTED WILL BE POOR IN SPOTS.
...ERN SOUTH ID...
IT WILL BE WINDY TODAY BEHIND THE COLD FRONT THAT WILL MOVE THROUGH
DURING THE LATE MORNING HOURS. WINDS WILL INCREASE TO 20-30 MPH
WITH HIGHER GUSTS THROUGH THE AFTERNOON HOURS. RH LEVELS WILL BE
LOWEST ALONG THE ID/WY BORDER...WITH MIN VALUES OF 20-25 PERCENT
DURING THE DAYLIGHT HOURS AND GOOD RECOVERY OVERNIGHT WITH COLD
TEMPERATURES. ALTHOUGH RH LEVELS WILL BE MARGINAL...EXTREME DROUGHT
PERSISTS ALONG WITH MANY FIRES NOTED ON SATELLITE.
..JEWELL.. 10/23/2003
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
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FNUS22 KWNS 230816
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0316 AM CDT THU OCT 23 2003
VALID 241200Z - 251200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
HIGH PRESSURE WILL EXPAND OVER THE NRN AND CENTRAL ROCKIES INTO THE
PLAINS STATES BRINGING COOL TEMPERATURES AND DRY AIR. STRONG
PRESSURE GRADIENT WILL CAUSE WINDY CONDITIONS OVER THE PLAINS
STATES. A WARM AND DRY AIRMASS WILL REMAIN OVER THE DESERT SW NWWD
THROUGH CENTRAL CA WITHIN THERMAL TROUGH.
...NRN AND SRN CA...
INCREASING HIGH PRESSURE OVER THE GREAT BASIN WILL CAUSE NIGHTLY
DOWNSLOPE WINDS ON W SLOPES OVER NRN CA AS WELL AS SRN CA. LOW RH
VALUES DURING THE DAY MAINLY IN THE TEENS WILL RECOVERY POORLY IN
THESE DOWNSLOPE REGIONS. WINDS ARE NOT EXPECTED TO BE VERY STRONG
THROUGH SAT MORNING...BUT SPEEDS OF 10-15 MPH WITH HIGHER GUSTS
APPEAR LIKELY OUT OF THE E AND NE.
...NRN AND CENTRAL PLAINS...
IT WILL BE A VERY WINDY DAY FRIDAY IN A POST FRONTAL REGIME. NWLY
WINDS OF 25-35 MPH WITH HIGHER GUSTS WILL BE LIKELY FROM ERN MT INTO
THE DAKOTAS ALONG WITH RH VALUES OF 25-30 PERCENT AND COOL
TEMPERATURES IN THE 40S AND 50S F. FURTHER SOUTH OVER NE AND
KS...WINDS WILL BE A BIT WEAKER FROM 15-25 MPH AND GUSTY WITH
COMPARABLE RH LEVELS DURING THE DAYTIME.
..JEWELL.. 10/23/2003
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
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