Red Flag Warning 3, NWS Sacramento, CA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
440 AM PDT TUE JUN 10 2008

.DISCUSSION...
SATELLITE IMAGERY SHOWS THE DEEP UPPER LOW CENTERED OVER EASTERN
WASHINGTON EARLY THIS MORNING WITH A DRY COLD FRONT AND DEEPENING
TROUGH EXTENDING SOUTHWARD INTO NORTHERN CALIFORNIA. THE LOW WILL
MOVE EASTWARD INTO THE NORTHERN ROCKIES TODAY WITH INCREASING
NORTHERLY FLOW DEVELOPING AT NEARLY ALL LEVELS ACROSS NORTHERN
CALIFORNIA TODAY.

COOLER TEMPERATURES ARE EXPECTED ACROSS THE REGION TODAY...THOUGH IT
WILL STILL BE WARM. HOWEVER...THE MOST SIGNIFICANT IMPACT WILL BE
THE INCREASINGLY GUSTY NORTH WINDS THAT WILL DEVELOP ACROSS THE
REGION TODAY AS COLD ADVECTION AND SUBSIDENCE INCREASES BEHIND THE
TROUGH. THE STRONG UPPER JET...WITH A MORE WEST NORTHWEST
ALIGNMENT...IS NOT IN THE MOST IDEAL ORIENTATION FOR ONE OF OUR
OCCASIONALLY VERY STRONG WIND EVENTS...THOUGH DAYTIME HEATING SHOULD
BE SUFFICIENT TO MIX DOWN STRONGER WINDS ALOFT WITH GUSTS ABOVE 40
MPH POSSIBLE IN THE CENTRAL VALLEY.

STRONG WINDS WILL CONTINUE TONIGHT (ONLY SUBSIDING SOMEWHAT ALONG
THE EASTERN FOOTHILLS OF THE CENTRAL VALLEY) AS SURFACE GRADIENTS
ACTUALLY TIGHTEN AS SURFACE HIGH PRESSURE BUILDS TO OUR NORTH.
PATTERN APPEARS FAVORABLE FOR A BARRIER JET SETUP WITH STRONGEST
WINDS ALIGNED ALONG THE WEST SIDE OF THE VALLEY. BOTH HI-RESOLUTION
NAM AND WRF MODELS DEPICT 925 MB WINDS OF 50 KTS ALONG THE WEST SIDE
OF THE SACRAMENTO VALLEY TONIGHT...SO POTENTIAL FOR EVEN STRONGER
WINDS WILL EXIST FOR THOSE AREAS TONIGHT.

STRONG NORTH WIND PATTERN CONTINUES MANY AREAS THROUGH WEDNESDAY
NIGHT INTO THURSDAY BEFORE SURFACE GRADIENTS BEGIN TO RELAX...SO
THERE IS POTENTIAL FOR SOME OF THE ADVISORIES TO EVENTUALLY BE
EXTENDED OUTWARD IN TIME.

&&

.AVIATION...
DRY CDFNT AND ASSOCD UPR TROF MOV THRU NORCAL TDA THEN HI PRES AT
SFC AND ALF BLDS INLD TNGT INTO WED. VFR CONDS OVR INTR NORCAL THRU
WED WITH NWLY FLOW ALF. NLY SFC WND 15-25 KTS WITH AREAS GSTS TO 35
KTS OR GTR OVR INTR NORCAL NXT 24 HRS. AREAS LLWS IN SAC VLY TIL 15Z.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING FOR GUSTY WIND AND LOW HUMIDITY TODAY THROUGH
THURSDAY AFTERNOON BELOW 3000 FEET.

WIND ADVISORY UNTIL 6 PM PDT WEDNESDAY FOR CENTRAL SACRAMENTO
VALLEY-NORTHERN SACRAMENTO VALLEY.

WIND ADVISORY FROM NOON TODAY TO 6 PM PDT WEDNESDAY FOR CARQUINEZ
STRAIT AND DELTA-NORTHERN SAN JOAQUIN VALLEY-SOUTHERN SACRAMENTO
VALLEY.

&&

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE SACRAMENTO CA
1049 PM PDT MON JUN 9 2008

CAZ013>019-063-064-066>069-101400-
SHASTA LAKE AREA/NORTHERN SHASTA COUNTY-
BURNEY BASIN/EASTERN SHASTA COUNTY-NORTHERN SACRAMENTO VALLEY-
CENTRAL SACRAMENTO VALLEY-SOUTHERN SACRAMENTO VALLEY-
CARQUINEZ STRAIT AND DELTA-NORTHERN SAN JOAQUIN VALLEY-
MOUNTAINS SOUTHWESTERN SHASTA TO NORTHERN LAKE COUNTIES-
CLEAR LAKE/SOUTHERN LAKE COUNTY-MOTHERLODE-
EAST FOOTHILLS/NORTH SACRAMENTO VALLEY-
WESTERN PLUMAS COUNTY/LASSEN PARK-WEST SLOPE NORTHERN SIERRA NEVADA-
1049 PM PDT MON JUN 9 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA.

.DAY ONE...TODAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY

GUSTY NORTHERLY WINDS WILL DEVELOP ACROSS THE INTERIOR OF NORTHERN
CALIFORNIA INCREASING ON TUESDAY AND TUESDAY NIGHT AND CONTINUE INTO
THURSDAY. THE WINDS COMBINED WITH DRY CONDITIONS WILL LEAD TO
HEIGHTENED FIRE DANGER.

* FIRE WEATHER WATCH.........SEE WWUS86 KSTO - RFWSTO FOR DETAILS *

* WIND ADVISORY..............SEE WWUS76 KSTO - NPWSTO FOR DETAILS *

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS TO THEIR LOCAL NATIONAL WEATHER SERVICE OFFICE.

THE LATEST WEATHER INFORMATION IS AVAILABLE ON THE INTERNET AT
(LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/STO