Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 131558
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1058 AM CDT FRI AUG 13 2010
VALID 131700Z - 141200Z
...NO CRITICAL AREAS...
FORECAST APPEARS ON TRACK...NO CHANGES NEEDED.
..SMITH.. 08/13/2010
.PREV DISCUSSION... /ISSUED 0206 AM CDT FRI AUG 13 2010/
...SYNOPSIS...
STRONG UPPER RIDGING WILL BUILD ALONG THE PACIFIC COAST...LEADING TO
DRY OFFSHORE FLOW AND A DEVELOPING THERMAL TROUGH FROM FAR NRN CA
ALONG THE ORE COAST AND INTO SWRN WA.
MEANWHILE...SEVERAL UPPER DISTURBANCES WILL ROTATE AROUND A SLOW SLY
MOVING TROUGH IN THE NRN INTERMOUNTAIN WEST/NRN HIGH PLAINS. THIS
WILL DRIVE A COLD FRONT AT THE SURFACE SWD AND EWD TO NEAR THE
DAKOTAS/MN BORDER THEN EXTENDING SWWD THROUGH WRN NEB...THEN WWD TO
THE ID/UT BORDER BY EARLY SATURDAY MORNING. VERY LOCALIZED CRITICAL
CONDITIONS MAY OCCUR IN ADVANCE OF THIS FRONT IN S CNTRL WY WITH 20
MPH WLY WINDS AND RELATIVE HUMIDITIES IN THE TEENS...BUT WILL BE TOO
LOCALIZED TO WARRANT AN OUTLOOK AT THIS TIME.
ELSEWHERE...DRY CONDITIONS WILL PERSIST IN THE SOUTHWEST...GREAT
BASIN...AND SRN ROCKIES THOUGH WITH LIGHT WINDS. HUMID CONDITIONS
WILL PERSIST ACROSS MUCH OF THE REMAINDER OF THE COUNTRY...WITH NO
CRITICAL FIRE CONDITIONS ANTICIPATED.
...WRN WA/ORE...
07Z WV IMAGERY SHOWS STRONG UPPER RIDGING BEGINNING TO BUILD OFF THE
PACIFIC COAST...WITH NLY FLOW ALOFT BEING REINFORCED BY A SWD MOVING
UPPER TROUGH NEAR THE WA/ID/MT AND CANADIAN BORDER. OFFSHORE/NNELY
WINDS ARE ALREADY REFLECTED IN SURFACE DATA AND VAD WIND
PROFILES...WHILE 00Z MEDFORD SOUNDING SHOWS DEEP NLY/NELY WIND
PROFILES AND DRY AIR /0.35 INCH PWAT/ AS WELL. THE COMBINATION OF
UPPER RIDGING/SUBSIDENCE AND DOWNSLOPE/OFFSHORE FLOW WILL LEAD TO
ABOVE NORMAL TEMPERATURES AND A DEVELOPING THERMAL TROUGH FOR THE
COAST THAT WILL REINFORCE NELY WINDS...THOUGH SUSTAINED SPEEDS ARE
GENERALLY EXPECTED TO BE AROUND 10 TO 15 MPH WITH THE EXCEPTION OF
FAVORED CANYONS AND PASSES WHERE SPEEDS MAY BE LOCALLY HIGHER.
RELATIVE HUMIDITIES WILL FALL INTO THE TEENS FOR MUCH OF ORE...WHILE
VALUES IN THE 20S WILL BE MORE LIKELY FARTHER N IN WA.
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 131827
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0127 PM CDT FRI AUG 13 2010
VALID 141200Z - 151200Z
...NO CRITICAL AREAS...
OVERALL FORECAST ON TRACK...NO APPRECIABLE CHANGES NEEDED.
..SMITH.. 08/13/2010
.PREV DISCUSSION... /ISSUED 0352 AM CDT FRI AUG 13 2010/
...SYNOPSIS...
STRONG UPPER RIDGING WILL PERSIST OFF THE PACIFIC COAST...WHILE A
WEAK UPPER DISTURBANCE DRIFTS NEWD INTO NRN CA/SRN ORE. HOT AND DRY
CONDITIONS WILL CONTINUE FOR MUCH OF THE WEST...WHILE THE UPPER
DISTURBANCE MAY INDUCE ISOLATED THUNDERSTORMS OVER NRN CA...SWRN AND
S CNTRL ORE.
MEANWHILE...AN UPPER TROUGH WILL CONTINUE TO PROGRESS EWD THROUGH
THE NRN/CNTRL PLAINS INTO THE WRN GREAT LAKES...WITH THE ASSOCIATED
COLD FRONT AT THE SURFACE EXTENDING THROUGH THE CNTRL GREAT LAKES
SWWD INTO OK BY EARLY SUNDAY MORNING. WIDESPREAD THUNDERSTORMS IN
ADVANCE OF THE SYSTEM AND ACROSS THE SOUTHEAST WILL LIMIT THE THREAT
OF FIRE STARTS/SPREAD. IN THE MID ATLANTIC AND NORTHEAST...RELATIVE
HUMIDITIES WILL REMAIN ABOVE CRITICAL THRESHOLDS...THOUGH LITTLE
PRECIPITATION IS EXPECTED.
...NRN CA/WRN ORE/SWRN WA...
STRONG UPPER RIDGING ALONG OFF THE PACIFIC COAST WILL ONCE AGAIN
LEAD TO ABOVE NORMAL TEMPERATURES ACROSS THE SEE TEXT AREA...WITH A
THERMAL TROUGH DEVELOPING FROM NERN CA INTO THE CASCADES AND SWRN
WA. OFFSHORE FLOW WILL CONTINUE...AND WILL BE MORE PREDOMINANT
ACROSS NWRN ORE/SWRN WA THAN FARTHER S. RELATIVE HUMIDITIES MAY FALL
INTO THE UPPER TEENS/LOWER 20S IN THESE AREAS. SUSTAINED WINDS WILL
GENERALLY BE AROUND 10 MPH...THOUGH LOCALIZED GUSTS MAY BE POSSIBLE
IN FAVORED CANYONS AND PASSES.
MEANWHILE...AN UPPER DISTURBANCE NOTED ON WV IMAGERY OFF THE CA
COAST WILL DRIFT NEWD...REACHING THE NRN CA COAST BY LATE AFTERNOON.
VERY WEAK INSTABILITY AND UPPER SUPPORT MAY ALLOW CUMULUS TO DEVELOP
OVER THE HIGHER TERRAIN OF NRN CA...SWRN AND S CNTRL ORE...WITH A
FEW ISOLATED LIGHTNING STRIKES POSSIBLE. DETERMINISTIC MODELS SHOW
PWAT NEAR 0.75 TO 1 INCH WHICH WOULD FAVOR WET THUNDERSTORMS...BUT
THIS APPEARS TO BE TOO FAST OF A MOISTURE INCREASE GIVEN RECENT
OFFSHORE WINDS AND DRY AIR MASS...AND NOTABLE MID LEVEL DRY AIR ON
WV IMAGERY PROGRESSING OVER THE AREA IN ADVANCE OF THE UPPER WAVE.
THEREFORE...LITTLE PRECIPITATION IS EXPECTED WITH ANY STORMS THAT
CAN DEVELOP.
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...