Fire Weather Outlook Discussion
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FNUS28 KWNS 252006
FWDD38

DAY 3-8 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0305 PM CDT SAT APR 25 2015

VALID 271200Z - 031200Z

A PROGRESSIVE PATTERN IS EXPECTED DURING THE DAY 3-8 PERIOD. THE
UPPER LOW OVER THE SOUTHERN HIGH PLAINS ON DAY 3/MON WILL SLOWLY
SHIFT EAST AND BECOME AN OPEN WAVE OVER THE MID/LOWER MS AND TN/OH
VALLEYS BY DAY 5/WED. AT THE SURFACE...HIGH PRESSURE ACROSS THE
INTERMOUNTAIN WEST AND GREAT BASIN WILL LEAD TO WEAK TO MODERATE
OFFSHORE FLOW ACROSS SOUTHERN CA ON DAY/3. IN THE WAKE OF THE UPPER
LOW...AN UPPER RIDGE WILL BUILD OVER THE ROCKIES AND MOVE INTO THE
PLAINS ON DAYS 5/6-WED/THU. ANY STRONGER DEEP LAYER FLOW DURING THIS
TIME FRAME WILL RESIDE FROM THE GREAT LAKES TO THE EASTERN GULF
COAST...ASSOCIATED WITH THE UPPER TROUGH SLOWLY PROGRESSING TOWARDS
THE WESTERN ATLANTIC. BY DAY 6 THROUGH DAY 8...A SHORTWAVE TROUGH IS
FORECAST TO MOVE ONSHORE THE PACIFIC NORTHWEST COAST AND TRACK EAST
ACROSS THE NORTHERN ROCKIES AND INTO THE NORTHERN PLAINS. THIS MAY
LEAD TO SOME ELEVATED FIRE WEATHER CONDITIONS ACROSS THE CENTRAL AND
NORTHERN PLAINS...BUT MODEL DIFFERENCES AT THIS TIME FRAME ARE TOO
GREAT TO PROVIDE ENOUGH CONFIDENCE IN HIGHLIGHTING ANY AREAS.

...DAY 3/MONDAY - SWRN CA MOUNTAINS AND FOOTHILLS...

LIGHT TO MODERATE OFFSHORE WINDS WILL BE ONGOING MONDAY MORNING.
HIGH TEMPERATURES WILL WARM INTO THE 70S AND 80S IN LOWER ELEVATIONS
AND RH VALUES WILL DROP TO AROUND 10-15 PERCENT IN THE FOOTHILLS AND
CANYONS...WITH HIGHER VALUES EXPECTED NEAR THE COASTAL AREAS. THE
STRONGEST WINDS /15 MPH GUSTING TO 35 MPH/ WILL BE THROUGH FAVORED
CANYONS AND PASSES OF THE LOS ANGELES AND VENTURA COUNTY MOUNTAINS
AND FOOTHILLS...WITH LIGHTER WINDS IN THE LOWER COASTAL AREAS. THE
SURFACE PRESSURE GRADIENT WILL WEAKEN THROUGH THE DAY...RESULTING IN
WEAKENING WIND SPEEDS BY EVENING. LIGHT RAINFALL OCCURRING ACROSS
THIS AREA DURING THE DAY 1/SAT PERIOD COMBINED WITH MARGINAL FUEL
CONDITIONS AND THE SHORT DURATION OF STRONGER OFFSHORE WINDS WILL
LIMIT THE OVERALL THREAT.

..LEITMAN.. 04/25/2015

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




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