Click for Day 1 FireWX Areal Outline Product
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FNUS21 KWNS 080909
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0409 AM CDT FRI SEP 08 2006
VALID 081200Z - 091200Z
...CRITICAL FIRE WEATHER AREA FOR CNTRL AND ERN WA AND ORE....FAR
NWRN ID...
...SYNOPSIS...
AN UPPER SHORTWAVE TROUGH WILL AFFECT THE PACIFIC NW LATE TODAY WITH
GUSTY AND SHIFTING WINDS WITH COLD FRONT. THIS WILL HAVE AN ADVERSE
EFFECT ON ONGOING FIRES WHICH WILL BE WITHIN THE THERMAL RIDGE
DURING THE DAYTIME. ALONG AND AHEAD OF THIS FRONT...SCATTERED
THUNDERSTORMS WILL OCCUR...AND SOME WILL BE DRY. THE RIDGE WILL
EXTEND SWD OUT OF ERN WA/OR INTO NV AND SRN CA. WINDS WILL ALSO
INCREASE ACROSS MUCH OF CA WHERE IT WILL REMAIN WARM...BUT RH WILL
RISE IN MANY LOCALS AS WELL.
TO THE EAST...A LARGE UPPER TROUGH WILL STRETCH FROM THE NRN PLAINS
INTO THE GREAT LAKES...WITH SURFACE HIGH BEHIND A COLD FRONT
EXTENDING FROM MI TO SRN NEB LATE TODAY. THIS WILL RESULT IN GUSTY
SELY WINDS OVER MUCH OF MT WY AND THE DAKOTAS...WITH ONLY MARGINALLY
LOW RH VALUES MOST PLACES.
...CRITICAL FIRE WEATHER AREA - CNTRL AND ERN WA AND OREGON....FAR
NWRN ID...
PRIMARY CONDITIONS: STRONG WIND SHIFT WITH ONGOING FIRES AND
SCATTERED DRY THUNDER
A STRONG UPPER LEVEL SHORTWAVE TROUGH WILL MOVE ASHORE AND INTO WRN
WA/OREGON LATE FRIDAY. MEANWHILE...THERMAL RIDGE WILL SET UP ACROSS
ERN WA/OREGON...WHERE IT WILL BE WARM AND DRY.
AS UPPER TROUGH CONTINUES EWD...PACIFIC COLD FRONT WILL SURGE
EWD...WITH THE STRONGEST WINDS COMING THROUGH PASSES AND CANYONS
INCLUDING THE COLUMBIA GORGE. STRONG WLY WINDS OF 15-25 MPH WILL BE
COMMON MAINLY LATE IN THE DAY INTO THE EVENING...WITH SPEEDS OVER 30
MPH IN FAVORED GORGE LOCATIONS. ALTHOUGH RH LEVELS WILL INCREASE
WITH FRONTAL PASSAGE...THE WINDS MAY CAUSE A CHANGE IN DIRECTION
WITH THE WILDFIRES.
IN ADDITION...SCATTERED THUNDERSTORMS...SOME DRY...WILL OCCUR OVER
CNTRL AND NERN OREGON AS WELL AS SERN WA AND INTO ID. THE STORMS
WILL LIKELY PERSIST WELL INTO THE EARLY MORNING HOURS AS THEY SHIFT
EWD INTO ID.
...NRN AND SRN CA...
A MARINE AIR MASS WILL MOVE INLAND DUE TO DEEPENING LOW OVER THE
GREAT BASIN AND SRN CA DESERTS. THIS WILL CAUSE THE USUAL GUSTY WLY
WINDS THROUGH PASSES AND CANYONS...WITH LOWEST RH IN DOWNSLOPE
REGIONS. OF SPECIAL NOTE ARE ONGOING FIRES ALONG THE LOS
ANGELES/VENTURA COUNTY LINE AS WELL AS OVER PLACER COUNTY IN NRN
CA...BOTH OF WHICH MAY EXPERIENCE GUSTY WINDS. THE WORST CONDITIONS
ON THE SMALL SCALE WILL LIKELY BE OVER SRN CA...WHERE A MDT HAINES
INDEX WILL BE IN PLACE IN ADDITION TO THE GUSTY WINDS.
...CNTRL AND SRN MONTANA...
GUSTY WINDS AND LOW RH WILL MATERIALIZE BY LATE AFTERNOON...AS HIGH
PRESSURE TO THE EAST CAUSES ELY WINDS NEAR 15 MPH. STRONG HEATING
SHOULD ALLOW STRONGER GUSTS TO DEVELOP. MIN RH LEVELS SHOULD AVERAGE
15-20 PERCENT AT PEAK HEATING.
..JEWELL.. 09/08/2006
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 080952
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0452 AM CDT FRI SEP 08 2006
VALID 091200Z - 101200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
PACIFIC NW COLD FRONT WILL SHIFT FROM WRN ID INTO WRN MT/SERN ID
DURING THE DAY...AS UPPER SHORTWAVE TROUGH SWINGS NEWD INTO SWRN
CANADA. RAIN AND STORMS WILL OCCUR ALONG AND AHEAD OF THE
FRONT...WHILE BEHIND THE FRONT...WLY WINDS WILL BLOW WITH MARGINALLY
LOW RH LEVELS BY AFTERNOON OVER ERN WA AND OREGON.
FARTHER S...DRIER AIR WILL INFILTRATE INTO THE GREAT BASIN AFTER
SEVERAL DAYS OF STORMS. MEANWHILE...SPRAWLING SURFACE HIGH PRESSURE
WILL SHIFT SLOWLY EWD ACROSS SRN CANADA AND THE NRN PLAINS/UPPER MS
VALLEY REGION. MODERATE SELY WINDS WILL THUS OCCUR OVER ERN MT/WY
INTO THE DAKOTAS.
...SRN CA INTO SRN AND CNTRL NV...
WEAK UPPER RIDGING WILL OCCUR IN WAKE OF RECENT TROUGH PASSAGE.
THUS...AN EXTREMELY DRY AIR MASS WILL EXIST SAT AFTERNOON WITH MIN
RH RANGING FROM THE SINGLE DIGITS SRN CA DESERTS INTO SRN NV TO
10-15 PERCENT OVER THE REST OF NV. WINDS WILL AVERAGE NEAR 15 MPH
OUT OF THE SW ACROSS THE REGION...WITH LOCALLY STRONGER GUSTS GIVEN
STRONG MIXING AND A MDT HAINES INDEX.
...CNTRL/ERN WA AND OREGON...
POST FRONTAL WLY FLOW WILL EXIST SATURDAY WITH SUSTAINED WINDS OF
15-20 MPH ALONG THE E SLOPES OF THE WA AND OREGON CASCADES...AND
INTO THE COLUMBIA GORGE. RH WILL GRADUALLY FALL INTO THE 20 PERCENT
RANGE WHERE TEMPERATURES REACH THE 80S.
...E CENTRAL NV...
ISOLATED DRY THUNDERSTORMS ARE LIKELY TO FORM WITHIN WEAK SURFACE
TROUGH ACROSS E CNTRL NV...AIDED BY SRN EDGE OF UPPER TROUGH IN
PRODUCING UPWARD VERTICAL MOTION. SUB-CLOUD RH LEVELS WILL BE ONLY
MARGINALLY LOW FOR SIGNIFICANT DRY THUNDER...THUS...A MIXTURE OF WET
AND DRY STORMS IS ANTICIPATED.
..JEWELL.. 09/08/2006
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...