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234
FNUS76 KPQR 160256 AAA
FWSPQR

SPOT FORECAST FOR 36 PIT WILDFIRE...USFS MH
NATIONAL WEATHER SERVICE PORTLAND OR
755 PM PDT MON SEP 15 2014

FORECAST IS BASED ON REQUEST TIME OF 1540 PDT ON SEPTEMBER 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL MIDNIGHT TONIGHT...

.DISCUSSION...
THERMAL TROUGH IS PUSHING INTO THE CASCADES THIS EVENING. AIR
MASS NOW STARTING TO MODIFY...AS DEW POINT TEMPERATURES ARE
STARING TO RISE. WILL CONTINUE TO SEE MARINE AIR FILTER INTO
THE REGION TONIGHT AND TUESDAY. TUESDAY WILL BE A BIT COOLER
BUT WILL SEE SIGNIFICANT INCREASE IN THE MARINE LAYER DEPTH
TUESDAY NIGHT AS MARINE CLOUDS AND MUCH COOLER AIR FILL AREAS
WEST OF THE CASCADES CREST.

OTHER PROBLEM IS THE WEAK UPPER LOW PRESSURE OVER THE SOUTH
OREGON COAST. AS IT MOVES NORTH TONIGHT...THERE IS JUST ENOUGH
MOISTURE ALOFT THAT AN ISOLATED MOSTLY DRY THUNDERSTORMS WILL
DEVELOP OVER THE CASCADES. AT THIS POINT...THESE WILL SHOULD
REMAIN WELL TO THE EAST AND SOUTHEAST OF THE 36 PIT FIRE.


.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY. AREAS OF SMOKE.
LAL.................1 (NO THUNDER)
CWR (%).............0 PERCENT.
MIN TEMPERATURE.....56-61.
MAX HUMIDITY........70-75 PERCENT.
WIND (20 FT)........W TO NW 2-4 MPH UNTIL 2000...THEN
                       VARIABLE 0-1 MPH.
VISIBILITY..........UNLIMITED AWAY FROM AND ABOVE SMOKE.
                       IN SMOKE...GENERALLY 1-2 MILES BUT
                       AS LOW AS 1/4 MILE.
CEILING.............MAIN CLOUDS ABOVE 15000 FT.
                      BUT SMOKE LAYER RUNNING 1000 TO 2200 FT.
HAINES INDEX........5 (MODERATE).

DETAILS FOR TONIGHT...
  TIME (LOCAL)...   8 PM   10 PM    MID   2 AM    4 AM   6 AM
  CLOUD COVERAGE.   70%    40%     20%    20%    40%     40%
  TEMP...........    75      69     66     63      60     56
  RH.............   40%    50%     55%    64%    69%     75%


.TUESDAY...
SKY/WEATHER.........PARTLY TO MOSTLY SUNNY. AREAS OF SMOKE.
CWR (%).............0 PERCENT.
LAL.................1 (NO THUNDER)
MAX TEMPERATURE.....77-80.
MIN HUMIDITY........40-45 PERCENT.
WIND (20 FT)........VARIABLE 0-1 MPH EARLY...THEN UPSLOPE 2-3 MPH.
                       IN AFTERNOON...W TO NW 3-5 MPH.
VISIBILITY..........UNLIMITED AWAY FROM AND ABOVE SMOKE.
                       IN SMOKE...GENERALLY 1-2 MILES BUT
                       AS LOW AS 1/4 MILE IN THE MORNING.
CEILING.............MAIN CLOUDS ABOVE 20000 FT.
                      BUT SMOKE LAYER RUNNING 1000 TO 2000 FT.
HAINES INDEX........5 (MODERATE) EARLY...THEN 4 (LOW).


.TUESDAY NIGHT...
SKY/WEATHER.........PARTLY CLOUDY IN THE EVENING...THEN BECOMING
                       CLOUDY. AREAS OF SMOKE.
LAL.................1 (NO THUNDER)
CWR (%).............0 PERCENT.
MIN TEMPERATURE.....52-55.
MAX HUMIDITY........88-95 PERCENT.
WIND (20 FT)........W TO SW 3-6 MPH UNTIL 2300...THEN
                       VARIABLE 0-1 MPH.
VISIBILITY..........UNLIMITED AWAY FROM AND ABOVE SMOKE.
                       IN SMOKE...GENERALLY 1-2 MILES BUT
                       AS LOW AS 1/4 MILE.
CEILING.............CLOUDS SCATTERED AT 5000 FT EARLY...
                       THEN BASES 2500 TO 3000 FT WITH TOPS 5500
                       FEET.
HAINES INDEX........4 (LOW).


$$
FORECASTER...ROCKEY
REQUESTED BY...WIMT  2 FBAN
REASON FOR REQUEST...WILDFIRE
.TAG 20140915.36PIT.02/PQR




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