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SPC Wildfire Outlook for September 1, 2015

Fire Outlook

Day 1 SPC Wild Fire Monitored Area Discussion

776 
FNUS21 KWNS 011636
FWDDY1

DAY 1 FIRE WEATHER OUTLOOK  
NWS STORM PREDICTION CENTER NORMAN OK
1136 AM CDT TUE SEP 01 2015

VALID 011700Z - 021200Z

NO CHANGES HAVE BEEN MADE TO THE ONGOING FORECAST.

..COHEN.. 09/01/2015

.PREV DISCUSSION... /ISSUED 0300 AM CDT TUE SEP 01 2015/

...SYNOPSIS...
WITHIN A BROADER UPPER LEVEL CYCLONIC CIRCULATION OVER MUCH OF WRN
CANADA...A SHORTWAVE TROUGH WILL MOVE SEWD FROM OFF THE BRITISH
COLUMBIA COAST TO THE PACIFIC NORTHWEST THROUGH THE PERIOD. SWLY
MID-LEVEL FLOW WILL CONTINUE OVER PORTIONS OF THE GREAT BASIN AND
NRN ROCKIES BETWEEN THIS TROUGH AND UPPER RIDGING THAT WILL REMAIN
OVER MUCH OF THE DESERT SOUTHWEST AND CNTRL/ERN CONUS. SOME OF THE
ENHANCED WINDS AT MID LEVELS COULD BE PROMOTED TO THE SFC THIS
AFTERNOON ACROSS PORTIONS OF THE PACIFIC NORTHWEST...GREAT BASIN...
AND NRN ROCKIES WITH DIURNAL HEATING/MIXING OF THE BOUNDARY LAYER.

...PORTIONS OF THE NRN ROCKIES AND ADJACENT HIGH PLAINS IN N-CNTRL
MT...
AS DOWNSLOPE SWLY WINDS INCREASE TO 15-20 MPH FOR A FEW HOURS THIS
AFTERNOON...WARMING/DRYING OF THE BOUNDARY LAYER SHOULD LOWER RH
VALUES TO 15-20 PERCENT PER LATEST RAP/GFS FORECAST SOUNDINGS. IN
THE PRESENCE OF DRY FUELS...THIS COMBINATION OF GUSTY WINDS WITH
SUFFICIENTLY LOWERED RH VALUES SHOULD ELEVATE FIRE WEATHER CONCERNS
ACROSS THIS REGION TODAY. THEREFORE...A SMALL ELEVATED AREA HAS BEEN
INTRODUCED ACROSS A PORTION OF THE NRN ROCKIES AND ADJACENT HIGH
PLAINS IN N-CNTRL MT. WEAKER FORECAST WINDS SURROUNDING THE ELEVATED
DESIGNATION CURRENTLY PRECLUDE A LARGER FIRE WEATHER THREAT AREA.

...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...