Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 211613
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1113 AM CDT TUE SEP 21 2010
VALID 211700Z - 221200Z
...CRITICAL FIRE WEATHER AREA FOR GREAT BASIN AND SRN WY...
NO CHANGES REQUIRED.
..STOPPKOTTE.. 09/21/2010
.PREV DISCUSSION... /ISSUED 0208 AM CDT TUE SEP 21 2010/
...SYNOPSIS...
FAST PROGRESSIVE FLOW REGIME WILL FEATURE AN UPPER TROUGH MOVING
RAPIDLY INTO CA FROM THE ERN PACIFIC WHILE A MID LEVEL ANTICYCLONE
PERSISTS OVER THE SERN U.S. INCREASING WSWLY MID LEVEL FLOW WILL
OVERSPREAD THE GREAT BASIN AHEAD OF THE UPPER TROUGH LEADING TO
BREEZY CONDITIONS AND HEIGHTENED FIRE WEATHER CONCERN ACROSS A LARGE
PART OF THE GREAT BASIN. IN THE LOW LEVELS...A COLD FRONT WILL PUSH
EWD ACROSS THE UPPER GREAT LAKES AND STALL OVER THE CNTRL PLAINS AND
SERVE AS AN EWD BOUND TO THE CRITICAL AREA OVER E-CNTRL WY. A
SURFACE RIDGE WILL EXTEND FROM THE MID-ATLANTIC TO THE NRN GULF
COAST STATES.
...GREAT BASIN AND SRN WY...
00Z/21 DETERMINISTIC MODELS INDICATE THE STRONGEST H7 FLOW WILL
LIKELY ARRIVE ACROSS NV/UT TOWARDS SUNSET...THUS MITIGATING OVERALL
HIGHER WIND GUST POTENTIAL. NONETHELESS...MODEL GUIDANCE APPEARS
CONSISTENT IN SHOWING MODERATELY STRONG SUSTAINED WINDS /20-25 MPH
WITH HIGHER GUSTS NEARING 40 MPH/ DEVELOPING LATER TODAY ACROSS THE
GREAT BASIN AS A STRONG UPPER JET NOSES INTO THE REGION DURING THE
DAYTIME HOURS. AMPLE HEATING SHOULD STEEPEN LOW LEVEL LAPSE RATES
AND BE CONDUCIVE FOR CRITICALLY LOW RH ONCE AGAIN ACROSS THE REGION
/8-15 PERCENT/. FARTHER E OVER S-CNTRL WY...FIRE WEATHER CONDITIONS
WILL PROBABLY BE SLIGHTLY LESS VOLATILE THAN AREAS OF CNTRL-ERN NV
BUT POCKETS OF CRITICAL CONDITIONS /SUSTAINED WINDS AROUND 20 MPH
AND 10-15 PERCENT RH/ ARE EXPECTED TO OCCUR INTERMITTENTLY FOR A FEW
HOURS.
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 211731
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1231 PM CDT TUE SEP 21 2010
VALID 221200Z - 231200Z
...NO CRITICAL AREAS...
NO CHANGES REQUIRED.
..STOPPKOTTE.. 09/21/2010
.PREV DISCUSSION... /ISSUED 0244 AM CDT TUE SEP 21 2010/
...SYNOPSIS...
AN UPPER TROUGH OVER CA AT THE START OF THE PERIOD WILL QUICKLY MOVE
EWD INTO THE GREAT BASIN WITH STRENGTHENING SWLY FLOW FIELDS AHEAD
OF THE TROUGH OVERSPREADING THE FOUR CORNERS STATES. DOWNSTREAM A
FLATTENED RIDGE WILL LEAD TO TRANQUIL CONDITIONS OVER MUCH OF THE
ERN 1/3RD OF THE U.S. AT THE SURFACE...A STALLED FRONTAL BOUNDARY
OVER THE CNTRL STATES WILL RETREAT NWD AS A COLD FRONT PUSHES EWD
OVER THE NERN STATES. RICHER MOISTURE WILL ALREADY BE IN PLACE OVER
SRN AZ BY DAYBREAK WEDNESDAY AND CONTINUE TO STREAM NWD INTO UT/CO
LEADING TO SCATTERED TO NUMEROUS SHOWERS/TSTMS AS THE UPPER TROUGH
IMPINGES UPON THE REGION. NO LARGE SCALE CRITICAL FIRE WEATHER
AREA/S ARE ANTICIPATED AT THIS TIME.
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...