Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 270930
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0430 AM CDT THU AUG 27 2009
VALID 271200Z - 281200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
AN UPPER-LEVEL SHORT WAVE TROUGH OVER SRN SASKATCHEWAN WILL AMPLIFY
INTO THE UPPER MIDWEST BY EARLY FRI. IN ITS WAKE...A RIDGE WILL
BUILD NWD TO THE CANADIAN ROCKIES...EMANATING FROM A MID-LEVEL
ANTICYCLONE CENTERED OVER THE SRN GREAT BASIN. LOW RH WILL BE
PREVALENT OVER MUCH OF THE WRN QUARTER OF THE CONUS...BUT WITH LIGHT
WINDS.
...FAR SERN MT/NERN WY/NWRN SD...
AN ENHANCED FIRE WEATHER THREAT SHOULD DEVELOP AROUND PEAK HEATING.
EVEN WITH AN INITIAL WEAK COLD FRONT PASSAGE...TEMPERATURES WILL
WARM INTO THE UPPER 80S TO LOWER 90S. WITH DRY NWLY LOW-LEVEL
FLOW...RH VALUES WILL FALL TO BETWEEN 12 AND 20 PERCENT. STEEP
LOW-LEVEL LAPSE RATES WILL PROMOTE DOWNWARD MOMENTUM TRANSPORT WITH
SUSTAINED WINDS LIKELY FROM 15 TO 20 MPH. A SECONDARY FRONTAL SURGE
DURING THE EVENING WILL RESULT IN WINDS SHIFTING TO THE N/NE AND
SUBSTANTIAL RH RECOVERY.
..GRAMS.. 08/27/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 270953
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0453 AM CDT THU AUG 27 2009
VALID 281200Z - 291200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
A MID-LEVEL ANTICYCLONE WILL PERSIST OVER THE SRN GREAT BASIN WITH A
RIDGE AXIS EMANATING NWD TO THE CANADIAN ROCKIES. AN UPPER-LEVEL
SHORT WAVE TROUGH OVER THE NERN PACIFIC WILL EVOLVE INTO A CUTOFF
LOW OVER THE PACIFIC NW BY EARLY SAT...WITH ATTENDANT SURFACE COLD
FRONT SWEEPING EWD INTO ID THROUGH NRN CA.
...CNTRL/ERN PORTIONS OF ORE AND WA INTO NERN CA/NWRN NV...
A BRIEF DURATION OF GUSTY WINDS JUXTAPOSED WITH LOW RH MAY OCCUR AT
COLD FRONT PASSAGE...BUT THE ABRUPT INFLUENCE OF A MARINE POLAR AIR
MASS SHOULD MITIGATE ANY CRITICAL POTENTIAL. INSTABILITY SHOULD BE
LIMITED IN ASSOCIATION WITH THE UPPER-LEVEL LOW...AND LIKELY BE
CONFINED ALONG AND WEST OF THE SURFACE FRONT. A FEW WET TSTMS APPEAR
POSSIBLE FRI EVENING INTO EARLY SAT.
..GRAMS.. 08/27/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...