FXUS66 KHNX 080502
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
902 PM PST MON DEC 7 2009

.SYNOPSIS...
AN ARCTIC AIRMASS WILL BRING FREEZING TEMPERATURES TO THE SAN 
JOAQUIN VALLEY OVER THE NEXT TWO NIGHTS. ANOTHER WINTER STORM SYSTEM 
WILL BRING RAIN AND MOUNTAIN SNOW TO THE AREA WEDNESDAY NIGHT AND 
THURSDAY.

&&

.DISCUSSION...THE VERY STRONG COLD FRONT HAS MOVED EAST OF THE
FORECAST AREA THIS EVENING. RADAR SHOWS SOME ECHOES MOVING DOWN
THE WEST SIDE OF THE SAN JOAQUIN VALLEY AND INTO THE KERN
COUNTY MOUNTAINS AND THIS WILL KEEP THE THREAT OF UPSLOPE SNOW
GOING FOR A FEW MORE HOURS. SNOW HAS ENDED IN THE SIERRA AND THE
WINTER STORM WARNING HAS BEEN CANCELED IN THE SIERRA. WINDS REALLY
CRANKED UP OVER SOUTHEAST KERN COUNTY THIS EVENING WITH MOJAVE
EXCEEDING 70 MPH AND THE WEST GATE HILL AT EDWARDS REPORTING A
GUST TO 78 MPH. WINDS HAVE BEEN SUSTAINED AS HIGH AS 50 MPH AND
MANY MANY GUSTS IN THE 60S HAVE BEEN REPORTED. A HIGH WIND WARNING
HAS REPLACED THE WIND ADVISORY FOR ZONE 99 AND IT IS IN EFFECT
UNTIL MIDNIGHT. IF THE SNOW ENDS IN THE KERN COUNTY MOUNTAINS AND
THE WINDS DIE DOWN BY MIDNIGHT ALL HEADLINES OUTSIDE OF THE
FREEZE WARNINGS WILL HAVE EXPIRED. SPEAKING OF THE FREEZE WARNING,
FOR TONIGHT SEVERAL STATIONS ARE ALREADY BELOW 32 DEGREES AND
GIVEN THE CLEARING SKIES AND MUCH DIMINISHED WINDS...FREEZING
CONDITIONS WILL OCCUR AFTER MIDNIGHT. AN EVEN COLDER NIGHT IS
LIKELY ON TUESDAY NIGHT AS RADIATIONAL COOLING, A RESIDUAL COLD
AIR MASS AND DRY AIR COMBINE TO DRIVE TEMPERATURES WAY DOWN.
PLEASE SEE THE FREEZE WARNING PRODUCTS FOR THE PARTICULARS ON THIS
EVENT. LOTS OF GRID UPDATES HAVE BEEN SENT THIS EVENING. 

A QUICK LOOK AT THE MODEL DATA SHOWS THE NEXT SYSTEM ON
TRACK TO ARRIVE ON THURSDAY AND ANOTHER FOR SATURDAY.&&

.AVIATION...
IN THE SAN JOAQUIN VALLEY...VFR WITH WIDESPREAD MVFR CONDITIONS IN 
CLOUDS THROUGH 10Z TUESDAY. VFR CONDITIONS BECOMING MORE WIDESPREAD 
AFTERWARD...EXCEPT FOR THE KERN COUNTY AREA OF THE VALLEY. MOUNTAINS 
...MVFR TO IFR CONDITIONS IN RAIN AND SNOW THROUGH 10Z TUESDAY... 
AFTERWARD MVFR TO IFR CONDITIONS ON CLOUDS FOR ELEVATIONS BEFORE 
6000 FEET AGL. VFR TO MVFR ABOVE 6000 FEET AGL. DESERTS...VFR TO 
MVFR THROUGH 06Z WEDNESDAY.

&&

.AIR QUALITY ISSUES...
NONE

&&

.HNX WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WARNING UNTIL MIDNIGHT PST TONIGHT FOR CAZ095.

FREEZE WARNING FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY FOR 
CAZ089>092.

FREEZE WARNING FROM 10 PM TUESDAY TO 9 AM PST WEDNESDAY FOR 
CAZ089>092.

WIND ADVISORY UNTIL MIDNIGHT PST TONIGHT FOR CAZ098.

HIGH WIND WARNING UNTIL MIDNIGHT PST TONIGHT FOR CAZ099.

&&

$$

PUBLIC...DUDLEY
AVN/FW...MOLINA
SYNOPSIS...MENDENHALL

WEATHER.GOV/HANFORD