Fire Weather Outlook Discussion
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604
FNUS21 KWNS 041648
FWDDY1

DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1147 AM CDT WED MAY 04 2016

VALID 041700Z - 051200Z

NO CHANGES HAVE BEEN MADE TO THE ONGOING FORECAST.

..COHEN.. 05/04/2016

.PREV DISCUSSION... /ISSUED 0346 AM CDT WED MAY 04 2016/

...SYNOPSIS...
A TROUGH-RIDGE-TROUGH PATTERN WILL EXIST OVER THE CONUS TODAY.
PRIMARY FOCUS FOR FIRE WEATHER CONCERNS WILL BE WITH A LARGE-SCALE
UPPER TROUGH MOVING SLOWLY EWD FROM THE ERN PACIFIC TO THE WEST
COAST BY LATE TONIGHT. ENHANCED MID-LEVEL WINDS ATTENDANT TO THIS
TROUGH WILL OVERSPREAD MUCH OF THE SWRN CONUS INTO THE GREAT BASIN
THROUGH THE PERIOD. WITH DIURNAL MIXING ALLOWING FOR MOMENTUM
TRANSPORT OF THE THESE STRONGER WINDS ALOFT TO THE SFC...A BROAD
AREA OF SLOWLY INCREASING SLY WINDS APPEARS LIKELY ACROSS THE SWRN
CONUS TODAY.

...PORTIONS OF THE LOWER CO RIVER VALLEY AND WRN AZ...
ELEVATED FIRE WEATHER CONDITIONS ARE EXPECTED FOR PORTIONS OF THE
LOWER CO RIVER VALLEY AND ADJACENT WRN AZ...AS STRONG/GUSTY SLY
WINDS OF 15-20 MPH WILL LIKELY COMBINE WITH RH VALUES BELOW 15
PERCENT THIS AFTERNOON. LATEST FUEL GUIDANCE SUGGESTS FINE FUELS ARE
SUFFICIENTLY DRY TO SUPPORT FIRE SPREAD. WITH STRONGER MID-LEVEL
WINDS FORECAST TO ARRIVE LATER THIS EVENING /AFTER PEAK HEATING AND
A MINIMUM IN RH VALUES/ CONFIDENCE IN SUSTAINED SFC WIND SPEEDS OF
20+ MPH FOR 3 OR MORE HOURS THIS AFTERNOON REMAINS TOO LOW TO
INTRODUCE A CRITICAL AREA.

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

$$



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