Winter Storm Warning 6, NWS Hanford, CA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
346 AM PST TUE FEB 16 2016

.SYNOPSIS...
HIGH PRESSURE WILL CONTINUE TO DOMINATE THE REGION TODAY RESULTING
IN ABOVE NORMAL DAYTIME HIGH TEMPERATURES AS WELL AS EARLY MORNING
FOG. A STORM SYSTEM WILL IMPACT CENTRAL CALIFORNIA WEDNESDAY AND
THURSDAY BRINGING MOUNTAIN SNOW...VALLEY RAIN...AND COOLER
TEMPERATURES. DRY WEATHER RETURNS FRIDAY AND CONTINUES THROUGH THE
WEEKEND.

&&

.DISCUSSION...PATCHY FOG DEVELOPED OVERNIGHT...WITH THE LOWEST
VISIBILITIES REPORTED NEAR MERCED AND HANFORD. VISIBILITIES ARE
FORECAST TO DROP THROUGH SUNRISE...SIMILAR TO CONDITIONS OBSERVED
THE PAST FEW MORNINGS. WE WILL CONTINUE TO MONITOR THE VISIBILITY
TRENDS CLOSELY...AND MAY END UP ISSUING A DENSE FOG ADVISORY IF
CONDITIONS WARRANT.

UPPER LEVEL HIGH PRESSURE WILL REMAIN IN PLACE OVER CALIFORNIA
THROUGH THIS EVENING...WITH DAYTIME HIGH TEMPERATURES WARMING INTO
THE MID TO UPPER 70S THROUGH THE VALLEY...FOOTHILL...AND DESERT
LOCATIONS. THESE TEMPERATURES ARE BETWEEN 10 AND 15 DEGREES ABOVE
NORMAL FOR THE MIDDLE OF FEBRUARY.

A WINTER STORM IS STILL ON TRACK TO IMPACT CENTRAL CALIFORNIA
WEDNESDAY AND THURSDAY AS AN UPPER LOW DROPS SOUTH TOWARD THE
PACIFIC NORTHWEST COASTLINE FROM THE GULF OF ALASKA. PRECIPITATION
WILL SPREAD SOUTH INTO THE NORTHERN SAN JOAQUIN VALLEY AND CENTRAL
SIERRA NEVADA ON WEDNESDAY AFTERNOON...CONTINUING SOUTH THROUGH
THE SOUTHERN SIERRA NEVADA AND SOUTHERN SAN JOAQUIN VALLEY BY
EARLY THURSDAY MORNING.

SNOW LEVELS WITH THE ONSET OF PRECIPITATION IN THE SIERRA NEVADA
WILL GENERALLY HOVER AROUND 8,000 FEET. BY THURSDAY MORNING SNOW
LEVELS WILL DROP TO AROUND 5,000 TO 6,000 FEET. HOWEVER...THE BULK
OF THE PRECIPITATION IS FORECAST TO FALL BEFORE SNOW LEVELS
DROP...SO MOST LOCATIONS BELOW 7,000 FEET ARE ONLY FORECAST TO
RECEIVE A FEW INCHES OF SNOW. LOCATIONS ABOVE 8,000 FEET FROM
KINGS CANYON NORTHWARD WILL GENERALLY SEE AROUND A FOOT OF
SNOW...WITH ISOLATED AREAS NEAR YOSEMITE NATIONAL PARK RECEIVING
CLOSE TO 2 FEET OF SNOW. LOCATIONS SOUTH OF KINGS CANYON IN THE
SIERRA NEVADA ABOVE 8,000 FEET ARE FORECAST TO RECEIVE BETWEEN 4
AND 8 INCHES OF SNOW.

RAIN ACCUMULATION ACROSS THE VALLEY WILL GENERALLY RANGE FROM A
TENTH OF AN INCH TO A THIRD OF AN INCH...WHILE THE FOOTHILLS ARE
FORECAST TO RECEIVE BETWEEN A HALF INCH TO JUST OVER AN INCH OF
RAIN. MEDIUM FORECAST CONFIDENCE FOR ACCUMULATION OF BOTH RAIN
AND SNOW...AS ANY SUBTLE CHANGE WITH THE STORM TRACK WILL GREATLY
IMPACT LOCATION OF THE HEAVIEST PRECIPITATION. PLEASE CONTINUE TO
MONITOR THE FORECAST FOR THE LATEST INFORMATION ON THIS CHANGE IN
THE WEATHER PATTERN.

THE UPPER TROUGH WILL QUICKLY MOVE EAST INTO NEVADA AND UTAH
THURSDAY AFTERNOON RESULTING IN ZONAL FLOW OVER CENTRAL CALIFORNIA
FRIDAY INTO THE WEEKEND. A SUBTLE WARMING TREND WILL BE PRESENT
OVER THE REGION THROUGH THE WEEKEND...HOWEVER MUCH MORE
SIGNIFICANT WARMING WILL TAKE PLACE EARLY NEXT WEEK AS HIGH
PRESSURE BEGINS TO BUILD OVER THE EASTERN PACIFIC.

&&

.AVIATION...
IN THE SAN JOAQUIN VALLEY...AREAS OF MVFR IN HAZE WITH LOCAL
IFR/LIFR IN MIST/FOG POSSIBLE THRU 18Z TUESDAY. OTHERWISE...VFR
CONDITIONS WILL PREVAIL ACROSS THE CENTRAL CA INTERIOR DURING THE
NEXT 24 HOURS.

&&

.AIR QUALITY ISSUES...
ON TUESDAY FEBRUARY 16 2016... UNHEALTHY FOR SENSITIVE GROUPS IN
FRESNO... KINGS AND TULARE COUNTIES.  FIREPLACE/WOOD STOVE BURNING
STATUS IS: NO BURNING UNLESS REGISTERED IN FRESNO... KERN...
KINGS... MADERA... MERCED AND TULARE COUNTIES.
FURTHER INFORMATION IS AVAILABLE AT VALLEYAIR.ORG

&&

.CERTAINTY...

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

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 02-16       80:1943     48:1956     56:1957     27:1956
KFAT 02-17       84:1930     47:1890     57:1986     29:1956
KFAT 02-18       84:1930     49:1969     59:1986     27:1889

KBFL 02-16       88:1902     46:1919     55:1982     22:1903
KBFL 02-17       85:1930     44:1932     56:1968     24:1903
KBFL 02-18       87:1930     49:1990     58:1993     27:1903
&&

.HNX WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WATCH FROM WEDNESDAY MORNING THROUGH THURSDAY
AFTERNOON CAZ096.

&&

PUBLIC...RILEY
AVN/FW...DCH
SYNOPSIS...RILEY

WEATHER.GOV/HANFORD

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