Area Forecast Discussion
Issued by NWS San Joaquin Valley, CA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
000
FXUS66 KHNX 230430
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
930 PM PDT TUE APR 22 2014

.UPDATE...
ALLOWED THE BLOWING DUST ADVISORY FOR THE SAN JOAQUIN VALLEY AND
THE WIND ADVISORY FOR KERN COUNTY EXPIRE AT 900 PM PDT. WIND
SPEEDS ACROSS THE AFFECT AREAS ARE DIMINISHING AND WILL CONTINUE
TO DECREASE DURING THE NIGHT. THEREFORE...ONLY WINDS AND WEATHER
WILL BE UPDATED THIS EVENING.

&&

.SYNOPSIS...
A COLD WEATHER SYSTEM WILL BRING SIGNIFICANT COOLING...STRONG GUSTY
WINDS TO THE REGION AND A CHANCE OF LIGHT PRECIPITATION MAINLY OVER
THE FOOTHILLS AND SIERRA. TEMPERATURES WILL CONTINUE COOLER THAN
AVERAGE ON WEDNESDAY BEFORE REBOUNDING A FEW DEGREES THURSDAY.
ANOTHER STORM WILL ARRIVE AT THE END OF THE WEEK...BRINGING WINDS...
COOLER TEMPERATURES AND A CHANCE OF RAIN AND SNOW TO THE REGION.

&&

.DISCUSSION...
TODAY/S COLD FRONTAL PASSAGE CONTINUES TO MOVE SOUTHEAST AND WAS
CURRENTLY MOVING THROUGH THE DESERT SOUTHWEST. NOW THE MOST OF THE
DISTRICT HAS FELT THE FRONTAL PASSAGE...CONDITIONS WILL BEGIN TO
STABILIZE OVERNIGHT. WINDS THAT HAD BEEN REACHING ADVISORY CRITERIA
EARLIER TODAY HAVE BEGUN TO DIMINISH. MANY WIND FAVORED AREAS WERE
REPORTING WINDS GUSTING TO 30 MPH WITH SUSTAINED VALUES IN THE
LOWER TEENS. SURFACE PRESSURE GRADIENTS FROM SFO TO LAS WERE STILL
NEAR 17MB...BUT WERE TRENDING DOWNWARD. THEREFORE...WHILE THE WIND
AND BLOWING DUST ADVISORIES WERE ALLOWED TO EXPIRE AT 900 PM PDT
...LOCAL WINDS COULD STILL REACH 35 TO 40 MPH BEFORE WEDNESDAY
MORNING. YET...SHORT RANGE MODELS PROGGING WINDS BECOMING LIGHT BY
500 AM PDT ON WEDNESDAY AND REMAINING LIGHT UNTIL THE ARRIVAL OF
FRIDAY/S STORM.

&&

.AVIATION...
GUSTY WINDS IN THE SAN JOAQUIN VALLEY...OVER THE KERN COUNTY
MOUNTAINS...AND IN THE KERN COUNTY DESERT AREAS UNTIL 12Z
WEDNESDAY. OTHERWISE...VFR CONDITIONS WILL PREVAIL ACROSS THE
CENTRAL CALIFORNIA INTERIOR DURING THE NEXT 24 HOURS.

&&

.PREV DISC... /ISSUED 308 PM PDT TUE APR 22 2014/
A PASSING COOL FRONTAL SYSTEM HAS LOWERED OUR TEMPERATURES AROUND
10-20 DEGREES FROM THIS TIME YESTERDAY. ASSOCIATED PRECIP HAS BEEN
MOSTLY LIGHT...AROUND A TRACE TO A HUNDREDTH OF AN INCH OR SO IN
THE NORTHERN HALF OF OUR VALLEY...UP TO A COUPLE OF TENTHS IN THE
SIERRA ZONES. SOME GUSTY WINDS HAVE ACCOMPANIED THE SYSTEM...
KICKING UP A LITTLE DUST. SHORT RANGE HIGH RESOLUTION MODELS
INDICATE GUSTY WINDS WILL CONTINUE THROUGH THIS EVENING AND THE
WIND ADVISORY CONTINUES FOR THE KERN COUNTY MOUNTAINS AND DESERT
AS WELL AS THE BLOWING DUST ADVISORY FOR THE VALLEY. A FEW
LINGERING SHOWERS ARE POSSIBLE OVER THE SIERRA THROUGH EARLY THIS
EVENING...OTHERWISE LOOK FOR DRYING CONDITIONS BEHIND THE
DEPARTING TROUGH.

AFTER HIGHS A FEW DEGREES BELOW NORMAL TODAY...EXPECT TEMPERATURES
TO TREND UPWARD FOR THE NEXT COUPLE OF DAYS UNDER WEAK SHORTWAVE
RIDGING AHEAD OF THE NEXT APPROACHING LOW PRESSURE TROUGH. BY
THURSDAY...TEMPERATURES SHOULD BE BACK TO A FEW TO SEVERAL DEGREES
ABOVE CLIMO. FRIDAY WILL SEE THE BEGINNING OF ANOTHER COOLOFF AS
THE NEXT SYSTEM IMPACTS THE AREA.

CERTAINTY IS INCREASING ON THE IMPACTS OF THIS STORM AS MODELS ARE
COMING INTO BETTER AGREEMENT. NAEFS PROGS SUGGEST ALMOST ALL OF
OUR AREA WILL SEE MEASURABLE PRECIPITATION FRIDAY. SNOW LEVELS
ARE EXPECTED TO DROP AS LOW AS AROUND 4000 FT BY SATURDAY BUT THE
BULK OF THE PRECIPITATION SHOULD BE OVER BY THEN. ANOTHER ROUNDS
OF GUSTY WINDS IS LIKELY AS WELL. THERE IS SOME SUGGESTION OF
ENOUGH INSTABILITY FOR POSSIBLE THUNDERSTORMS IN THE VALLEY
FRIDAY.

DRY AND WARMING CONDITIONS THEN RETURN INTO THE FIRST PART OF NEXT
WEEK AS HIGH PRESSURE REBUILDS OVER THE REGION.

&&

.AIR QUALITY ISSUES...
THE VALLEY AIR DISTRICT HAS ISSUED A HEALTH CAUTIONARY STATEMENT
FOR MERCED... MADERA... FRESNO... KINGS...TULARE... AND THE VALLEY
PORTION OF KERN COUNTIES FROM THIS MORNING THROUGH THIS EVENING
DUE TO BLOWING DUST CAUSED BY WINDY CONDITIONS.

EXPOSURE TO PARTICLE POLLUTION CAN CAUSE SERIOUS HEALTH
PROBLEMS... AGGRAVATE LUNG DISEASE... CAUSE ASTHMA ATTACKS AND
ACUTE BRONCHITIS AND INCREASE RISK OF RESPIRATORY INFECTIONS. IN
PEOPLE WITH HEART DISEASE... SHORT-TERM EXPOSURE TO PARTICLE
POLLUTION HAS BEEN LINKED TO HEART ATTACKS AND
ARRHYTHMIA...ACCORDING TO THE U.S. ENVIRONMENTAL PROTECTION
AGENCY. CHILDREN AND ELDERLY PEOPLE ARE ALSO MORE SUSCEPTIBLE TO
CONSEQUENCES OF HIGH PARTICULATE LEVELS.

STAY INDOORS IF POSSIBLE. AVOID PROLONGED OR STRENUOUS OUTDOOR
PHYSICAL ACTIVITIES TO REDUCE THE AFFECTS OF UNHEALTHY AIR.

&&

.CERTAINTY...

THE LEVEL OF CERTAINTY FOR DAYS 1 AND 2 IS HIGH.
THE LEVEL OF CERTAINTY FOR DAYS 3 THROUGH 7 IS MEDIUM.

THIS INFORMATION IS PROVIDED AS PART OF A TRIAL PROJECT CONDUCTED
BY THE NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD.
CERTAINTY LEVELS INCLUDE LOW...MEDIUM...AND HIGH. PLEASE VISIT
WWW.WEATHER.GOV/HNX/CERTAINTY.PHP /ALL LOWER CASE/ FOR ADDITIONAL
INFORMATION AND/OR TO PROVIDE FEEDBACK.

&&

.CLIMATE...
             RECORDS
SITE DATE    HI_MAX:YEAR LO_MAX:YEAR HI_MIN:YEAR LO_MIN:YEAR

KFAT 04-22       96:2012     57:2010     66:2012     33:1968
KFAT 04-23      100:1910     56:1961     62:2012     39:1958
KFAT 04-24      101:1910     60:1899     63:1910     36:1958

KBFL 04-22       98:2012     58:2010     67:2012     34:1920
KBFL 04-23      100:1910     59:1960     62:2012     33:1904
KBFL 04-24      100:1910     64:1994     62:1981     34:1904
&&

.HNX WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY UNTIL 9 PM PDT THIS EVENING CAZ095-098-099.

BLOWING DUST ADVISORY UNTIL 9 PM PDT THIS EVENING CAZ089>092.

&&

$$

PUBLIC...MOLINA
AVN/FW...MV
PREV DISCUSSION...JEB
SYNOPSIS...WP

WEATHER.GOV/HANFORD







USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.