Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 120840
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0340 AM CDT WED SEP 12 2007
VALID 121200Z - 131200Z
...CRITICAL FIRE WEATHER AREA FOR MUCH OF MT/EASTERN AND CENTRAL
ID/MUCH OF WY...
...SYNOPSIS...
A POTENT UPPER TROUGH/UPPER JET...AND ASSOCIATED STRONG COLD
FRONT...WILL CROSS THE WESTERN CANADIAN PROVINCES AND NORTHERN
ROCKIES/NORTHERN PLAINS THROUGH TONIGHT. WINDY CONDITIONS...ALONG
WITH A COLD FRONT-INDUCED WIND SHIFT...WILL RESULT IN A CRITICAL
FIRE DANGER ACROSS A LARGE PART OF MT/ID/WY. ELSEWHERE...VERY WARM
AND DRY CONDITIONS WILL PERSIST ACROSS THE GREAT BASIN INTO SOUTHERN
CA WHERE SINGLE DIGIT RH VALUES WILL OCCUR THIS AFTERNOON...ALONG
WITH LOCALLY GUSTY WINDS.
...CRITICAL FIRE WEATHER AREA - MUCH OF MT/EASTERN AND CENTRAL
ID/MUCH OF WY...
PRIMARY CONDITIONS: STRONG WINDS/COLD FRONTAL WIND SHIFT AND LOW RH
AS THE UPPER TROUGH CROSSES THE NORTHERN ROCKIES...SURFACE LOW
PRESSURE WILL DEEPEN RAPIDLY FROM EASTERN MT INTO THE DAKOTAS THIS
AFTERNOON. THIS WILL DRAG A STRONG COLD FRONT SOUTHEASTWARD ACROSS
MT/NORTHERN WY THIS AFTERNOON/EARLY EVENING...WHERE A DISTINCT
NORTHERLY WIND SHIFT IS EXPECTED IN THE WAKE OF THE FRONT. STRONG
WIND FIELDS ALOFT AND SUFFICIENT MIXING/MOMENTUM TRANSFER SUGGEST
SUSTAINED WIND SPEEDS OF 20-30 MPH /WITH GUSTS TO 40 MPH/ ARE LIKELY
ACROSS MUCH OF THE REGION...GENERALLY FROM A WEST-SOUTHWEST
DIRECTION AHEAD OF THE COLD FRONT...AND NORTH-NORTHWEST BEHIND IT.
AHEAD OF THE COLD FRONT...WARM TEMPERATURES WILL PREVAIL WITH
MINIMUM RH VALUES OF 10-20 PERCENT.
...EASTERN DAKOTAS AND NORTHERN/CENTRAL MN...
AS SURFACE LOW PRESSURE QUICKLY DEEPENS ACROSS THE DAKOTAS...STRONG
AND GUSTY WINDS ARE EXPECTED ACROSS A LARGE PART OF THE NORTHERN
PLAINS AND UPPER MIDWEST THIS AFTERNOON. ALTHOUGH WIDESPREAD
CRITICAL CONDITIONS ARE NOT ANTICIPATED...SUSTAINED SOUTHERLY WINDS
OF 20-30 MPH /WITH GUSTS TO 40 MPH/ WILL LEAD TO A HEIGHTENED FIRE
DANGER IN LOCALLY/RELATIVELY DRIER AREAS OF NORTHERN MN AND THE
EASTERN DAKOTAS.
..GUYER.. 09/12/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 120959
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0459 AM CDT WED SEP 12 2007
VALID 131200Z - 141200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
UPPER TROUGH IS FORECAST TO DECELERATE/AMPLIFY OVER THE NORTHERN
PLAINS AND CENTRAL CANADIAN PROVINCES ON THURSDAY...WHILE A
PERSISTENT UPPER LOW SLOWLY NEARS THE NORTHERN CA/ORE COAST. IN THE
WAKE OF THE DAY 1 COLD FRONT...HIGH PRESSURE WILL USHER A MUCH
COOLER AIRMASS SOUTHWARD ACROSS THE NORTHERN ROCKIES/NORTHERN HIGH
PLAINS. THE EAST-SOUTHEAST ADVANCING COLD FRONT WILL BE THE PRIMARY
FOCUS FOR SHOWERS/THUNDERSTORMS ACROSS THE UPPER MIDWEST...WITH RAIN
ALSO COMMON ACROSS MUCH OF THE GULF COAST STATES ON THURSDAY.
...SOUTHERN WY/FAR EASTERN ID INTO NORTHEAST UT/WESTERN CO...
STRONG COLD FRONT WILL STALL ACROSS ID/WY ON THURSDAY...WITH THE
POTENTIAL FOR STRONG WIND GUSTS REMAINING ACROSS MUCH OF SOUTHERN
WY/FAR EASTERN ID INTO NORTHEAST UT/WESTERN CO AS A POTENT UPPER JET
REMAINS OVERHEAD. SUSTAINED WIND SPEEDS OF 20-30 MPH /WITH HIGHER
GUSTS/ ARE LIKELY...ESPECIALLY ACROSS SOUTHERN WY. ALTHOUGH PORTIONS
OF THE REGION COULD ULTIMATELY WARRANT A CRITICAL UPGRADE...CURRENT
THINKING IS THAT MARGINAL RH VALUES/FUELS MAY TEMPER THE FIRE
WEATHER POTENTIAL IN SPITE OF THE STRONG/GUSTY WINDS.
...CA SIERRA/MUCH OF NV INTO CENTRAL/SOUTHERN UT...
UPPER LOW IN THE EASTERN PACIFIC WILL SLOWLY MIGRATE EASTWARD TOWARD
THE NORTHERN CA/ORE COAST ON THURSDAY. THIS WILL REINFORCE A
MODERATE BELT OF SOUTHWESTERLY FLOW ALOFT ACROSS THE SIERRA
MOUNTAINS AND GREAT BASIN. ALONG WITH WARM TEMPERATURES AND AT LEAST
MARGINALLY CRITICAL AFTERNOON RH VALUES...SUSTAINED WIND SPEEDS OF
15-20 MPH /WITH HIGHER GUSTS/ WILL LEAD TO A HEIGHTENED FIRE DANGER.
PORTIONS OF THE REGION WILL BE MONITORED FOR A POSSIBLE CRITICAL
UPGRADE...ESPECIALLY THE LAKE TAHOE VICINITY INTO WESTERN/CENTRAL NV
WHERE FUELS APPEAR TO BE MOST SUSCEPTIBLE.
..GUYER.. 09/12/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...