Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks
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FNUS21 KWNS 010908
STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK
400 AM CDT MON JUL 01 2002
DAY 1 FIRE WEATHER OUTLOOK...REF AWIPS GRAPHIC PMWE98 KWNS
VALID 011200-021200
...CRITICAL FIRE WEATHER AREA FOR - MUCH OF UT / WRN CO / NERN AZ
/ NWRN NM / SRN WY...
...SYNOPSIS...
SAME WEATHER PATTERN AS THE LAST FEW DAYS IN GENERAL. FAST ZONAL
FLOW ALOFT FROM WA/OR EWD INTO ND AND MN...WITH LIGHT WINDS FOR THE
REST OF THE NATION. UPPER RIDGE WILL HOLD OVER THE SRN ROCKIES AND
GREAT BASIN...WITH A CONTINUATION OF HOT DRY AND UNSTABLE
CONDITIONS.
...CRITICAL FIRE WEATHER AREA # 1 - MUCH OF UT / WRN CO / NERN AZ
/ NWRN NM / SRN WY...
PRIMARY CONDITIONS: HIGH POTENTIAL FOR PLUME DOMINATED FIRES
A VERY HOT AND DRY AIRMASS WILL COMBINE WITH LIGHT WINDS ONCE AGAIN
TO PRODUCE WEATHER CONDITIONS FAVORABLE FOR PLUME DOMINATED FIRES.
OVERALL...NOT MUCH DIFFERENCE BETWEEN TODAY AND YESTERDAY. VERY
STEEP LAPSE RATES AND LOW RH THROUGH THE LOW LEVELS OF THE
ATMOSPHERE...HAINES INDEX OF 6 THROUGHOUT THE AREA...WITH THE
DRIEST AND MOST UNSTABLE CONDITIONS CENTERED ALONG THE UT/CO BORDER
SWD INTO ERN AZ AND WRN NM. WINDS WILL BE A BIT STRONGER INTO SRN
WY AS WELL AT 15-20 MPH AND GUSTY...BUT QUICKLY WEAKEN TO THE
SOUTH.
...CENTRAL/WRN WY...
WINDS WILL BE A BIT LIGHTER TODAY THAN ON SUNDAY...BUT WILL STILL
APPROACH CRITICAL LEVELS DURING THE AFTERNOON HOURS. SUSTAINED WLY
WINDS OF 15-20 MPH ARE EXPECTED ON AVERAGE...WITH HIGHER SPEEDS
INTO THE HIGHEST ELEVATIONS. MINIMUM RH VALUES WILL REACH 10
PERCENT OR LESS IN PLACES...WITH MOST LOCATIONS STAYING BELOW 20
PERCENT DURING THE DAYTIME HOURS. OVERLAP OF MARGINAL WIND
CONDITIONS WITH CRITICAL AREA 1 WILL OCCUR OVER SRN WY TODAY.
...DAKOTAS INTO WRN NEBRASKA...
A COLD FRONT STRETCHING FROM THE WRN DAKOTAS INTO NERN WY THIS
MORNING WILL MOVE SEWD TODAY...SHIFTING WINDS FROM SELY TO NWLY.
SPEEDS OF 20-30 MPH WILL BE COMMON EARLY OVER THE WESTERN DAKOTAS
AND NERN WY...THEN 15-25 MPH WITH FRONTAL PASSAGE LATER TODAY OVER
THE ERN DAKOTAS AND WRN NEBRASKA. RH IS EXPECTED TO BE MARGINAL AT
20-30 PERCENT DURING THE AFTERNOON.
...NRN MT...
FAST WLY FLOW ALOFT WILL HELP MAKE IT WINDY TODAY...ESPECIALLY OVER
NRN MT AND ALONG THE E SLOPES. WIND SPEEDS WILL AVERAGE 20-30 MPH
SUSTAINED...WITH HIGHER GUSTS. RH IS EXPECTED TO REMAIN BELOW
CRITICAL LEVELS AT 20-30 PERCENT
..JEWELL.. 07/01/02
SPC FIRE WEATHER OUTLOOKS ARE AVAILABLE AT WWW.SPC.NOAA.GOV/FIRE
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FNUS22 KWNS 011035
STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK
540 AM CDT MON JUL 01 2002
DAY 2 FIRE WEATHER OUTLOOK...REF AWIPS GRAPHIC PMWI98 KWNS
VALID 021200-031200
...CRITICAL FIRE WEATHER AREA FOR - THE SIERRA / MUCH OF NV AND UT
/ NWRN AZ...
...SYNOPSIS...
WEAK UPPER LOW WILL BRING SOME MOISTURE INTO THE SWRN U.S. AND
GREAT BASIN...AND WILL BRING THE THREAT OF DRY THUNDERSTORMS. HOT
AND MOSTLY DRY CONDITIONS WILL PERSIST OVER MUCH OF THE FOUR
CORNERS AREA...ALTHOUGH CLOUDS WILL BE ON THE INCREASE. IT WILL BE
HOT AND DRY INTO OR AND ID AS WELL. WINDS WILL BE A BIT LIGHTER
ACROSS OR/ID/MT/WY AS SURFACE PRESSURE GRADIENTS SLACKEN.
...CRITICAL FIRE WEATHER AREA # 1 - THE SIERRA / MUCH OF NV AND UT
/ NWRN AZ...
PRIMARY CONDITIONS: DRY LIGHTNING ALONG WITH POTENTIAL FOR PLUME
DOMINATED FIRES
MID AND HIGH LEVEL MOISTURE WILL SURGE NWD ON TUESDAY...WITH AXIS
FROM SWRN AZ NWD INTO NV. GIVEN VERY STEEP LAPSE RATES IN
PLACE...AND WEAK LOW LEVEL UPSLOPE FLOW AND CONVERGENCE...HIGH
BASED THUNDERSTORMS ARE EXPECTED TO FORM. IT IS UNLIKELY MUCH RAIN
WILL FALL...BUT LIGHTNING WILL BE A POSSIBILITY. EXPERIMENTAL
LIGHTNING IGNITION EFFICIENCIES REMAIN VERY HIGH. IN
ADDITION...AREAS THAT REMAIN RELATIVELY UNAFFECTED BY CLOUDINESS
WILL HAVE A HIGH POTENTIAL OF PLUME DOMINATED FIRES...ESPECIALLY
OVER UT...WRN CO...NRN AZ AND NWRN NM. CRITICAL AREA WILL BE
REFINED IN NEXT DAY 1 PACKAGE ONCE BEST AREAS CAN BE PINPOINTED.
...SRN AZ...
AFTERNOON WLY WINDS OF 15-20 MPH WITH HIGHER GUSTS ARE EXPECTED
OVER THE SRN AZ DESERTS...ALONG WITH RH NEAR 15 PERCENT. INCREASE
IN MOISTURE AND ATMOSPHERIC STABILITY...ALONG WITH UPPER LEVEL
CLOUDINESS WILL HELP TO MITIGATE FIRE THREAT...HOWEVER WIND AND RH
COMBINATIONS WILL POSE SOME HAZARD.
..JEWELL.. 07/01/02
SPC FIRE WEATHER OUTLOOKS ARE AVAILABLE AT WWW.SPC.NOAA.GOV/FIRE
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