AREA FORECAST DISCUSSION

FXUS66 KHNX 200549
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
949 PM PST MON JAN 19 2009

.DISCUSSION...THE UPPER LEVEL RIDGE CONTINUES TO SLIDE SLOWLY
EAST FROM THE REGION AHEAD OF AN APPROACHING TROUGH. SOME HIGH
CLOUDINESS ADVECTING NORTHWARD IN THE SOUTHERLY FLOW HAS BEEN
CLIPPING SOUTH AND EAST PORTIONS OF THE DISTRICT AND SHOULD
CONTINUE TO DO SO OVERNIGHT. EXPECT LITTLE CHANGE IN CONDITIONS
AGAIN TONIGHT AND TOMORROW UNDER THE SLOWLY RETREATING RIDGE. BY
TOMORROW NIGHT MORE SIGNIFICANT CLOUDS SHOULD SPREAD OVER INTERIOR
CENTRAL CALIFORNIA AS THE TROUGH NEARS. MODELS CONTINUE TO SHOW
SOME DIFFERENCES IN TIMING AND PLACEMENT OF THE BEST PART OF THE
MOISTURE STREAM BUT AGREE ON DRAWING SOME SUBTROPICAL MOISTURE
INTO THE REGION WITH THE APPROACHING SYSTEM...BRINGING A GOOD
CHANCE FOR PRECIPITATION OVER THE DISTRICT WEDNESDAY INTO
THURSDAY. DIFFERENCES CONTINUE REGARDING ADDITIONAL INCOMING
ENERGY BEHIND THE DEPARTING TROUGH AFTER THURSDAY...BUT CONSENSUS
IS FOR GENERALLY UNSETTLED CONDITIONS WITH NEAR CLIMO POPS AND
TEMPERATURES LOWERING TO NEAR CLIMO INTO EARLY NEXT WEEK. NO
UPDATE TO FORECAST TONIGHT.



&&

.AVIATION...AREAS MVFR IN HAZE IN THE SAN JOAQUIN VALLEY THRU 18Z
WED...EXCEPT 12Z THRU 18Z TUE LCL IFR IN MIST AND ISOLD
LIFR IN FOG. OTHERWISE VFR THRU 00Z WED.


&&

.AIR QUALITY ISSUES...
ON TUESDAY JANUARY 20 2009... UNHEALTHY FOR SENSITIVE GROUPS IN
KERN AND KINGS COUNTIES. FIREPLACE/WOOD STOVE BURNING IS
PROHIBITED IN KERN AND KINGS COUNTIES.
FURTHER INFORMATION IS AVAILABLE AT VALLEYAIR.ORG

&&

.HNX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&




PUBLIC...JEB
AVN/FW...BEAN

WEATHER.GOV/HANFORD