Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 090738
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0238 AM CDT WED JUL 09 2008
VALID 091200Z - 101200Z
...CRITICAL FIRE WEATHER AREA FOR NRN CA/SW ORE...
...SYNOPSIS...
THE MID LEVEL RIDGE OVER THE GREAT BASIN AND PAC COAST WILL WEAKEN
GRADUALLY IN RESPONSE TO THE AMPLIFICATION OF A SHORTWAVE TROUGH
WHICH WILL MOVE FROM THE GULF OF AK TOWARD MT BY THURSDAY. THE
LARGE SCALE FLOW REGIME WILL MAINTAIN A HOT/DRY AIR MASS OVER THE
GREAT BASIN/CA/ORE...AND AN ACCOMPANYING FIRE WEATHER THREAT ACROSS
NRN CA/SW ORE. ISOLATED DRY LIGHTNING MAY OCCUR THIS AFTERNOON
ACROSS THE LOWER CO VALLEY AND SRN SIERRA NEVADA ON THE NW EDGE OF
MID LEVEL MOISTURE PLUME.
ELSEWHERE ACROSS THE CONUS...RELATIVELY MOIST CONDITIONS OR WEAK
WINDS WILL PRECLUDE ANY SUBSTANTIAL FIRE WEATHER THREAT.
...CRITICAL FIRE WEATHER AREA - NRN CA/SW ORE...
PRIMARY CONDITIONS: HOT TEMPERATURES / LOW RH / MODERATE WINDS
ANOTHER DAY OF MUCH ABOVE NORMAL TEMPERATURES AND LOCALLY GUSTY
NLY/NELY WINDS IS EXPECTED ACROSS SW ORE AND NRN CA. RECORD HIGH
TEMPERATURES TUESDAY AND A DRY ANTECEDENT AIR MASS HAVE RESULTED IN
POOR OVERNIGHT RH RECOVERY ACROSS THE HIGHER ELEVATIONS...AS WELL AS
THE SACRAMENTO VALLEY. RH WILL FALL QUICKLY BY AFTERNOON TO NEAR 10
PERCENT AS SURFACE TEMPERATURES AGAIN APPROACH RECORD VALUES IN THE
90S TO 110S. THOUGH LARGE SCALE WINDS WILL BE SOMEWHAT MARGINAL FOR
A CRITICAL FIRE WEATHER THREAT...LOCALLY GUSTY/DOWNSLOPE NLY/NELY
WINDS OF 15-25 MPH WILL COMBINE WITH THE HOT TEMPERATURES AND LOW RH
TO SUPPORT CRITICAL FIRE WEATHER CONDITIONS THROUGH THIS AFTERNOON.
A TENDENCY FOR WEAK ONSHORE FLOW WILL GRADUALLY REDUCE THE FIRE
WEATHER THREAT BY TONIGHT...ESPECIALLY IN SW ORE.
...LOWER CO RIVER VALLEY AND SRN/CENTRAL SIERRA NEVADA RANGE...
ISOLATED HIGH-BASED THUNDERSTORMS WERE OBSERVED TUESDAY EVENING FROM
THE LOWER CO VALLEY NWWD TO THE CENTRAL SIERRA NEVADA. A MID LEVEL
MOISTURE PLUME...PER WATER VAPOR IMAGERY AND THE 00Z DRA
SOUNDING...AND STRONG DAYTIME HEATING COULD AGAIN SUPPORT A FEW
HIGH-BASED THUNDERSTORMS WITH DRY LIGHTNING. THE OVERALL COVERAGE
OF DRY LIGHTNING WILL BE RATHER SPARSE...THUS A CRITICAL AREA DOES
NOT APPEAR WARRANTED.
..THOMPSON.. 07/09/2008
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 090740
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0240 AM CDT WED JUL 09 2008
VALID 101200Z - 111200Z
...CRITICAL FIRE WEATHER AREA FOR NRN ROCKIES INTO CENTRAL MT...
...SYNOPSIS...
A STRONG SHORTWAVE TROUGH AND ASSOCIATED SURFACE COLD FRONT WILL
SWEEP EWD ACROSS THE NRN ROCKIES AND MT WEDNESDAY AFTERNOON/NIGHT.
STRONG DOWNSLOPE LOW-LEVEL WINDS AND LOW AFTERNOON RH WILL SUPPORT
CRITICAL FIRE WEATHER CONDITIONS ACROSS PORTIONS OF NRN ID AND
WRN/CENTRAL MT. HOT AND DRY CONDITIONS WILL PERSIST ACROSS THE
GREAT BASIN INTO CA...THOUGH LARGE SCALE WINDS WILL BE RELATIVELY
WEAK. THERE WILL BE SOME POTENTIAL FOR ISOLATED DRY THUNDERSTORMS
ALONG THE NRN AND WRN PERIPHERY OF THE MONSOONAL MOISTURE PLUME
ACROSS PORTIONS OF SRN GREAT BASIN...THOUGH CONFIDENCE IN DRY
THUNDERSTORM COVERAGE IS RATHER LOW AT THIS TIME.
OTHERWISE...RELATIVELY MOIST CONDITIONS E OF THE ROCKIES WILL
PRECLUDE ANY FIRE WEATHER CONCERNS.
...CRITICAL FIRE WEATHER AREA - NRN ROCKIES TO CENTRAL MT...
PRIMARY CONDITIONS: STRONG WINDS / LOW RH
WLY DOWNSLOPE WINDS OF 20-30 MPH WITH GUSTS IN EXCESS OF 40 MPH ARE
EXPECTED THURSDAY AFTERNOON/EVENING FROM THE HIGH TERRAIN ALONG THE
ID/MT BORDER EWD INTO CENTRAL MT...IN ASSOCIATION WITH THE
AMPLIFYING MID LEVEL TROUGH. AFTERNOON TEMPERATURES IN THE 70S
ACROSS WRN MT AND 85-95 INTO CENTRAL MT WILL SUPPORT RH VALUES OF
15-20 PERCENT IN COMBINATION WITH THE STRONG WINDS. THOUGH FIRE
DANGER RATINGS ARE NOT PARTICULARLY HIGH AND PRECIPITATION HAS
FALLEN OVER MUCH OF MT IN THE PAST WEEK...THE WINDS/RH STILL APPEAR
SUPPORTIVE OF AN ELEVATED FIRE RISK FROM LATE AFTERNOON INTO THE
EVENING. FIRE WEATHER CONDITIONS WILL IMPROVE SLOWLY OVERNIGHT WITH
COLD FRONTAL PASSAGE AND RH RECOVERY ACROSS WRN/CENTRAL MT.
..THOMPSON.. 07/09/2008
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...