Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 260823
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0323 AM CDT SAT SEP 26 2009
VALID 261200Z - 271200Z
...CRITICAL FIRE WEATHER AREA FOR CNTRL/ERN MT...
...SYNOPSIS...
AN INTENSE UPPER-LEVEL JET /250 MB WINDS AOA 150 MPH/ ACROSS BRITISH
COLUMBIA INTO THE NERN PACIFIC WILL BECOME CENTERED FROM THE NRN
PLAINS TO THE CANADIAN ROCKIES BY EARLY SUN. AN ASSOCIATED SHORT
WAVE TROUGH WILL DIG SEWD ACROSS THE CANADIAN PRAIRIES. SURFACE COLD
FRONT WILL REACH THE FAR NRN HIGH PLAINS BY EARLY
EVENING...ACCELERATING SEWD DURING THE LATTER HALF OF THE PERIOD.
...CRITICAL FIRE WEATHER AREA - CNTRL/ERN MT...
PRIMARY CONDITIONS: STRONG WINDS / LOW RH / RECENT DRYNESS
LOW/MID-LEVEL WLYS WILL STRENGTHEN MARKEDLY THROUGH TODAY. THIS WILL
BE FAVORABLY TIMED WITH THE DEVELOPMENT OF A WELL-MIXED BOUNDARY
LAYER...SUPPORTING SUSTAINED SURFACE WINDS FROM 20 TO 30 MPH DURING
THE LATE AFTERNOON. WITH TEMPERATURES WARMING INTO THE UPPER 70S AND
80S...RH VALUES WILL LIKELY FALL TO AROUND 15 TO 20 PERCENT. GUSTY
WINDS WILL CONTINUE THROUGH THE EVENING/OVERNIGHT...VEERING TO THE
NW AND N IN THE WAKE OF A COLD FRONT PASSAGE.
...PORTIONS OF S-CNTRL/SERN WY...
LOCALIZED CRITICAL CONDITIONS WILL LIKELY DEVELOP DURING THE LATE
AFTERNOON...PRIMARILY ALONG THE NRN SLOPES OF THE S-CNTRL MTNS/WRN
SLOPES OF THE LARAMIE MTNS. AS LOW-LEVEL WLYS STRENGTHEN DURING THE
AFTERNOON...SUSTAINED SURFACE SPEEDS SHOULD REACH 20 TO 25 MPH BY
LATE IN THE DAY. THIS SHOULD BE JUXTAPOSED WITH MARGINALLY LOW RH
VALUES OF 15 TO 20 PERCENT.
...COLUMBIA BASIN OF ERN WA...
LOCALIZED/SHORT-DURATION CRITICAL CONDITIONS APPEAR PROBABLE DURING
THE LATE AFTERNOON...AS THE REGION LIES ON THE SRN PERIPHERY OF A
MID/UPPER-LEVEL JET CENTERED FROM SWRN CANADA INTO THE NRN HIGH
PLAINS. SUSTAINED SURFACE WINDS SHOULD APPROACH 20 MPH AT PEAK
HEATING AS RH VALUES FALL TO AROUND 15 TO 20 PERCENT.
..GRAMS.. 09/26/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 260930
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0430 AM CDT SAT SEP 26 2009
VALID 271200Z - 281200Z
...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE NRN/CNTRL
PLAINS...
...SYNOPSIS...
A POWERFUL MID-LEVEL JET /100 MPH AT 500 MB/ SHOULD BECOME CENTERED
FROM THE BLACK HILLS TO THE MIDDLE MO RIVER VALLEY BY EARLY EVENING
ON SUN. THIS WILL AID IN SUBSTANTIAL AMPLIFICATION OF A SHORT WAVE
TROUGH...RAPIDLY TRACKING FROM THE CANADIAN PRAIRIES ACROSS THE
UPPER MIDWEST INTO THE GREAT LAKES BY EARLY MON. A SURFACE CYCLONE
WILL DEEPEN ACROSS CNTRL ONTARIO/LK SUPERIOR...WITH AN ATTENDANT
COLD FRONT SWEEPING QUICKLY SEWD FROM THE UPPER MS RIVER
VALLEY/CNTRL HIGH PLAINS TO THE OH RIVER VALLEY/SRN PLAINS.
...CRITICAL FIRE WEATHER AREA - PORTIONS OF THE NRN/CNTRL PLAINS...
PRIMARY CONDITIONS: VERY STRONG WINDS / LOW RH / RECENT DRYNESS
TROPOSPHERIC KINEMATIC FIELDS WILL BE QUITE INTENSE ACROSS THE NRN
PLAINS INTO NEB ON SUN...WITH AN EXPANSIVE AREA OF SUSTAINED SURFACE
WINDS AOA 20 MPH. HOWEVER...MODEL FORECASTS ARE CONSISTENT WITH
SUGGESTING THAT LOW RH /FROM 15 TO 20 PERCENT/ SHOULD ONLY DEVELOP
WITHIN A MUCH MORE NARROWER CORRIDOR. ALTHOUGH THERE IS MODERATE
UNCERTAINTY OVER THE EXACT PLACEMENT OF LOW RH...CONSENSUS SUGGESTS
THIS CORRIDOR SHOULD LIE FROM SERN MT/SWRN ND SEWD INTO S-CNTRL
SD/N-CNTRL NEB. SUSTAINED SURFACE WINDS HERE WILL LIKELY REACH 25 TO
35 MPH AND RESULT IN A HIGH-END TO LOCALIZED EXTREMELY CRITICAL
THREAT.
..GRAMS.. 09/26/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...