Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 290856
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0356 AM CDT SAT SEP 29 2007
VALID 291200Z - 301200Z
...CRITICAL FIRE WEATHER AREA FOR MUCH OF AL/GA AND SC PIEDMONT/FL
PANHANDLE...
...SYNOPSIS...
A POTENT UPPER TROUGH WILL QUICKLY SHIFT EASTWARD TODAY OVER THE
GREAT BASIN/ROCKIES...REACHING THE CENTRAL HIGH PLAINS SUNDAY
MORNING. ASSOCIATED STRONG COLD FRONT WILL RESULT IN GUSTY
WINDS/COOLER TEMPERATURES IN ITS WAKE...WITH WIDESPREAD SHOWERS AND
THUNDERSTORMS ACROSS A LARGE PART OF THE ROCKIES AND
NORTHERN/CENTRAL PLAINS. IN THE EAST...UPPER RIDGE/SURFACE HIGH
PRESSURE WILL CONTRIBUTE TO MILD/DRY CONDITIONS ACROSS THE SOUTHEAST
STATES.
...CRITICAL FIRE WEATHER AREA - MUCH OF AL/GA AND SC PIEDMONT/FL
PANHANDLE...
PRIMARY CONDITIONS: VERY LOW AFTERNOON RH/LONG TERM DROUGHT
A SUNNY/MILD AND VERY DRY AFTERNOON IS EXPECTED OWING TO THE
INFLUENCE OF THE UPPER RIDGE AND SURFACE HIGH PRESSURE. RH VALUES
ARE LIKELY TO DROP INTO THE 25-30 PERCENT RANGE FOR SEVERAL HOURS
DURATION THIS AFTERNOON...RESULTING IN A HEIGHTENED FIRE DANGER IN
THE PRESENCE OF EXTREME-EXCEPTIONAL LONG TERM DROUGHT. A MODEST
PRESSURE GRADIENT ON THE PERIPHERY OF THE SURFACE HIGH WILL SUPPORT
SUSTAINED EAST/NORTHEAST WINDS AROUND 10 MPH IN MOST LOCALES THIS
AFTERNOON.
...NORTHEAST AZ/SOUTHEAST UT...
STRONG SOUTHWEST WINDS WILL CONTINUE MUCH OF THE DAY AHEAD OF THE
COLD FRONT CROSSING UT/NORTHERN AZ...WITH A SUBSEQUENT WIND SHIFT TO
WEST-NORTHWESTERLY EXPECTED BY LATE AFTERNOON/EARLY EVENING IN
ASSOCIATION WITH THE FRONT. SUSTAINED WIND SPEEDS OF 20-30 MPH /WITH
HIGHER GUSTS/ ARE LIKELY INTO EARLY EVENING. WHILE STRONG/GUSTY
WINDS AND THE WIND SHIFT WILL RESULT IN AN ELEVATED FIRE DANGER...RH
LEVELS WILL TEND TO BE MARGINAL AT 15-20 PERCENT.
...EASTERN WY/EASTERN CO INTO WESTERN SD/NEB PANHANDLE...
BETWEEN THE UPSTREAM COLD FRONT AND HIGH PLAINS LEE
TROUGH...STRONG/GUSTY SOUTHWEST WINDS AND MARGINALLY LOW RH VALUES
ARE EXPECTED THIS AFTERNOON ACROSS THE NORTH CENTRAL HIGH PLAINS.
ALTHOUGH INCREASING CLOUD COVER WILL BE A LIMITING
FACTOR...SUFFICIENT BOUNDARY LAYER MIXING WILL SUPPORT SUSTAINED
WIND SPEEDS OF 20-30 MPH THROUGH THE AFTERNOON...WITH GUSTS TO 40
MPH POSSIBLE...PARTICULARLY ACROSS EASTERN WY WHERE THE DOWNSLOPE
COMPONENT WILL BE GREATEST.
..GUYER.. 09/29/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 290942
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0442 AM CDT SAT SEP 29 2007
VALID 301200Z - 011200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
LEAD SHORTWAVE TROUGH WILL TRANSITION NORTHEASTWARD FROM THE CENTRAL
HIGH PLAINS TO THE WESTERN GREAT LAKES ON SUNDAY...WHILE A
SECONDARY/MORE SUBSTANTIAL UPPER TROUGH DIGS SOUTHEASTWARD ALONG THE
WEST COAST. EVEN WITH THE COLD FRONTAL PASSAGE ON DAY
1...TEMPERATURES WILL QUICKLY MODERATE ACROSS THE GREAT BASIN AND
ADJACENT WESTERN STATES AHEAD OF THE NEXT UPPER TROUGH. THIS
SECONDARY SYSTEM WILL BRING GUSTY WINDS TO PORTIONS OF ORE/ID/NV AND
NORTHERN CA ON SUNDAY...HOWEVER COOL TEMPERATURES AND/OR MOIST FUELS
WILL PRECLUDE CRITICAL FIRE WEATHER CONDITIONS.
FARTHER EAST...BROAD SYNOPTIC COLD FRONT WILL BE THE PRIMARY FOCUS
FOR SHOWERS AND THUNDERSTORMS FROM THE UPPER MIDWEST INTO THE
CENTRAL PLAINS. DRY CONDITIONS WILL CONTINUE ACROSS THE SOUTHEAST
STATES...OWING TO THE PERSISTENCE OF THE UPPER RIDGE/SURFACE HIGH
PRESSURE.
...SOUTHEAST STATES...
UPPER RIDGE WILL REMAIN OVER THE REGION ON SUNDAY...WITH SURFACE
HIGH PRESSURE EXTENDING FROM THE NORTHEAST STATES INTO AREAS
ALONG/EAST OF THE APPALACHIANS. THIS SCENARIO WILL MAINTAIN A DRY
AIRMASS ACROSS THE REGION...WITH RELATIVELY LOW RH AFTERNOON VALUES
AROUND 30 PERCENT. EXPECTATIONS OF SLIGHTLY COOLER
TEMPERATURES/HIGHER RH VALUES AND/OR SOMEWHAT LIGHTER WINDS SUGGEST
THAT THE OVERALL FIRE DANGER WILL BE MORE MARGINAL AS COMPARED TO
DAY 1/SATURDAY.
..GUYER.. 09/29/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...