000
FXUS66 KHNX 190035
AFDHNX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
435 PM PST MON JAN 18 2010
.SYNOPSIS...
THE WET PATTERN HAS ARRIVED WITH A MODERATE AMOUNT OF RAIN IN THE
VALLEY. SEVERAL FEET OF SNOW TO THE HIGHER ELEVATIONS OF THE SIERRA
NEVADA CAN BE EXPECTED THROUGH THE WEEK. THERE MAY ALSO BE SOME
ISOLATED THUNDERSTORMS IN THE VALLEY AND FOOTHILLS TODAY AND TONIGHT.
&&
.DISCUSSION...
WINDS IN THE CENTRAL AND SOUTHERN SAN JOAQUIN VALLEY AND THE KERN
COUNTY DESERTS HAVE DIMINISHED BELOW ADVISORY CRITERIA...EXCEPT
FOR OCCASIONAL GUSTS. HAVE ALLOWED THE WIND ADVISORY FOR THOSE
AREAS TO EXPIRE. THE HIGH WIND WARNING FOR THE KERN COUNTY
MOUNTAINS HAS BEEN REPLACED BY THE WINTER STORM WARNING THAT
BECAME EFFECTIVE AT 00Z TUESDAY /1600 PST MONDAY/.
A STRONG LINE OF THUNDERSTORMS DEVELOPED OVER THE CENTRAL SAN
JOAQUIN VALLEY AND THE SIERRA FOOTHILLS. A FUNNEL CLOUD WAS
OBSERVED 5 MILES SOUTHWEST OF FRESNO AT 2326Z /1526 PST/...AND
ISOLATED ROTATION WAS OBSERVED ON RADAR. THE FUNNEL CLOUD
DISSIPATED WITHOUT APPROACHING THE GROUND.
&&
.PREV DISCUSSION... /ISSUED 225 PM PST MON JAN 18 2010/
DISCUSSION...
FRONT HAS BLASTED THROUGH THE REGION RATHER QUICKER THAN EXPECTED.
CLEARING HAS BEGUN ACROSS THE VALLEY AND IS EXPECTED TO CONTINUE
THROUGH THE AFTERNOON. WINDS WERE QUITE STRONG AHEAD OF THE FRONT
WITH SEVERAL LOCATIONS REPORTING GREATER THAN 35 MPH ACROSS THE
VALLEY WITH SOME REPORTS OF DAMAGE. RAINFALL AMOUNTS WERE AROUND
50 OF AN INCH OVER MOST LOCATIONS.
THE WINTER STORM WARNING HAS BEEN EXTENDED TO WED MORNING WITH THE
NEXT SYSTEM ON ITS WAY. THERE WILL BE A 9 TO 15 HOUR BREAK IN
BETWEEN SYSTEMS AS THE PRECIP WILL START UP AGAIN TUESDAY
AFTERNOON AND CONTINUE INTO WED MORNING. QPF WITH THIS SYSTEM IS
NOT AS IMPRESSIVE AS THE SYSTEM THAT JUST WENT THROUGH...HOWEVER
IT WILL BE ENOUGH TO KEEP UP THE WARNING IN THE SIERRA...BUT MAY
BE MARGINAL OVER THE TEHACHAPI MOUNTAINS.
ONCE THAT SYSTEM MOVES THROUGH...THE NEXT ONE IS EXPECTED TO MOVE
INTO THE REGION BY LATE WEDNESDAY AFTERNOON. THIS IS AN IMPRESSIVE
SYSTEM AND IS EXPECTED TO CONTINUE THROUGH THURSDAY MORNING. THERE
WILL BE ANOTHER BREAK ON THURSDAY AND THEN GET STARTED AGAIN LATE
THURSDAY AFTERNOON AND CONTINUE INTO FRIDAY MORNING. THIS SYSTEM
LOOKS LIKE IT IS GOING TO SPLIT AND MAY NOT BE VERY IMPRESSIVE
ACROSS OUR REGION. CONFIDENCE REMAINS LOW IN THE EXTENDED.
IT LOOKS MORE SHOWERY ON FRIDAY AS THINGS QUIET DOWN SOME FOR THE
WEEKEND.
&&
.AVIATION...
SCATTERED SHOWERS WILL END THIS EVENING AS A DEEP LOW EXITS THE
REGION. MOUNTAIN OBSCURATIONS MAY CONTINUE OVER THE SIERRA THROUGH
09Z. MAINLY MVFR CONDITIONS THROUGH 12Z. ANOTHER LOW WILL MOVE INTO
THE REGION TUESDAY BRINGING STRONG GUSTY WINDS...AREAS OF RAIN WITH
LOCAL IFR CONDITIONS AFTER 18Z TUESDAY.
&&
.AIR QUALITY ISSUES...
NONE
&&
.HNX WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WARNING UNTIL 4 AM PST WEDNESDAY FOR THE SOUTHERN
SIERRA NEVADA AND THE TEHACHAPI MOUNTAINS /CAZ095>097/.
&&
$$
PUBLIC...SANGER
AVN/FW...MV
SYNOPSIS...TLM
PREVIOUS PUBLIC...JDB