Fire Weather Outlook Discussion
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FNUS21 KWNS 231605
FWDDY1

DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1104 AM CDT TUE SEP 23 2014

VALID 231700Z - 241200Z

..NE CA...SE ORE...NW NV...
SWLY WINDS WILL LIKELY APPROACH 20 MPH IN ISOLATED LOCATIONS WITH
WINDS FROM 10 TO 15 MPH EXPECTED ELSEWHERE. SLIGHTLY STRONGER WINDS
ARE POSSIBLE IN ELEVATED AREAS...PARTICULARLY S-CNTRL ORE. HIGHS
WILL BE IN LOW 80S...SUPPORTING MIN RH VALUES FROM 15 TO 20 PERCENT.
AS SUCH...ELEVATED FIRE WEATHER CONDITIONS ARE STILL ANTICIPATED AND
NO CHANGES ARE NEEDED TO THE PREVIOUS OUTLOOK.

..MOSIER.. 09/23/2014

.PREV DISCUSSION... /ISSUED 0352 AM CDT TUE SEP 23 2014/

...SYNOPSIS...
THE BULK OF THE STRONGEST MID-/UPPER-LEVEL FLOW ACROSS THE UNITED
STATES WILL RETREAT NORTHWARD INTO CANADA DURING THE FORECAST
PERIOD. THE EXCEPTION TO THIS WILL BE ACROSS THE PACIFIC NORTHWEST
WHERE A STRONG MID-/UPPER-LEVEL TROUGH WILL APPROACH THE COAST.

AT THE SURFACE...TRANQUIL WEATHER WILL EXIST ACROSS MUCH OF THE
UNITED STATES AS AN EXPANSIVE HIGH PRESSURE TAKES HOLD IN THE WAKE
OF A DEPARTING COLD FRONT. EXCEPTIONS ARE --
1. ACROSS THE SOUTHEAST UNITED STATES WHERE A WEAK SURFACE TROUGH
CAN BE FOUND JUST OFF THE COASTS OF GEORGIA...SOUTH CAROLINA...AND
NORTH CAROLINA...
2. ACROSS THE LEE OF THE ROCKY MOUNTAINS WHERE A LEE TROUGH WILL
DEVELOP...AND
3. ACROSS THE PACIFIC NORTHWEST WHERE AN INCREASING SURFACE PRESSURE
GRADIENT WILL DEVELOP AS A STRONG SURFACE CYCLONE
DEVELOPS/APPROACHES FROM THE NORTHWEST.

...NORTHEAST CALIFORNIA...SOUTHEAST OREGON...AND NORTHWEST NEVADA...
DEEP SOUTHWESTERLY FLOW WILL DEVELOP ATOP AN INCREASING
SURFACE-PRESSURE GRADIENT AS THE AFOREMENTIONED MID-/UPPER-LEVEL LOW
APPROACHES THE COAST. SURFACE TEMPERATURES WILL WARM INTO THE 70S
AND 80S /ALLOWING FOR MINIMUM RELATIVE-HUMIDITY VALUES TO FALL INTO
THE TEENS/ AND SURFACE WINDS WILL INCREASE IN THE 10-20 MPH RANGE.
THE COMBINATION OF LOW RELATIVE HUMIDITY...INCREASING SURFACE
WINDS...AND DRY FUELS WILL RESULT IN ELEVATED FIRE-WEATHER
CONDITIONS.

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



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