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Re: Special Weather Statement

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avatar Special Weather Statement
May 24, 2010 03:42AM
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
234 PM PDT SUN MAY 23 2010

CAZ096-097-241115-
SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON-
TULARE COUNTY MOUNTAINS-
234 PM PDT SUN MAY 23 2010

...WINTER WEATHER POSSIBLE IN THE SOUTHERN SIERRA...

A STORM IS FORECAST TO DEVELOP AND MOVE SOUTHEAST TOWARD CENTRAL
CALIFORNIA LATE TUESDAY NIGHT...AND CONTINUE INTO WEDNESDAY AND
POSSIBLY THURSDAY.

SNOW MAY BEGIN AS EARLY AS TUESDAY EVENING IN YOSEMITE PARK...AND
SPREAD SOUTH ACROSS THE REST OF THE SIERRA WEDNESDAY. THE SNOW
LEVEL WILL INITIALLY BE NEAR 8000 FEET...BUT LOWER TO 6000 TO
7000 FEET LATER WEDNESDAY AND THURSDAY.

SIGNIFICANT SNOW ACCUMULATIONS ARE POSSIBLE AT AND ABOVE 7000
FEET...AND COULD RANGE FROM A HALF FOOT IN SEQUOIA AND KINGS
CANYON PARKS...TO OVER ONE FOOT FARTHER NORTH IN YOSEMITE PARK.
BELOW THE SNOW LEVEL...PERIODS OF COLD RAIN ARE LIKELY.

ANYONE IN...OR PLANNING TRAVEL INTO THE SOUTHERN SIERRA THIS WEEK
SHOULD PAY CLOSE ATTENTION TO THE LATEST FORECASTS. PAY HEED TO
ANY WATCHES OR WARNINGS THAT MAY BE ISSUED...AND BE PREPARED FOR
WINTER LIKE WEATHER.

IMPROVING WEATHER AND A GRADUAL WARMING TREND IS SLATED FOR THE
LONG MEMORIAL DAY WEEKEND.

$$

BINGHAM
avatar Winter Storm Warning
May 24, 2010 01:14PM
Winter Storm Warning
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE HANFORD CA
1219 PM PDT MON MAY 24 2010

...MORE LATE-SEASON WINTER-LIKE WEATHER FOR CENTRAL CALIFORNIA
THIS WEEK...

.ANOTHER LATE SEASON WEATHER SYSTEM FROM THE PACIFIC WILL MOVE
INTO NORTHERN CALIFORNIA TUESDAY AFTERNOON REACHING THE SOUTHERN
SIERRA NEVADA BY LATE TUESDAY NIGHT. PERIODS OF MODERATE TO
OCCASIONALLY HEAVY SNOW ALONG WITH LOCALLY GUSTY SOUTHWEST WINDS
WILL BE POSSIBLE ACROSS THE HIGHER ELEVATIONS OF THE SOUTHERN
SIERRA NEVADA LATE TUESDAY NIGHT INTO LATE WEDNESDAY NIGHT. UNSETTLED
WEATHER WILL LIKELY CONTINUE INTO FRIDAY.

CAZ096-250330-
/O.UPG.KHNX.WS.A.0013.100526T0600Z-100527T0600Z/
/O.NEW.KHNX.WS.W.0014.100526T0600Z-100527T1100Z/
SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON-
1219 PM PDT MON MAY 24 2010

...WINTER STORM WARNING IN EFFECT FROM 11 PM TUESDAY TO 4 AM PDT
THURSDAY ABOVE 6000 FEET...

THE NATIONAL WEATHER SERVICE IN HANFORD HAS ISSUED A WINTER STORM
WARNING ABOVE 6000 FEET FOR HEAVY SNOW AND STRONG WINDS... WHICH
IS IN EFFECT FROM 11 PM TUESDAY TO 4 AM PDT THURSDAY FOR THE
SOUTHERN SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON. THE WINTER
STORM WATCH IS NO LONGER IN EFFECT FOR THE SOUTHERN SIERRA NEVADA
FROM YOSEMITE TO KINGS CANYON.

* SNOW ACCUMULATIONS: 6 TO 8 INCHES ABOVE 6000 FEET AND 8 TO 12 INCHES
ABOVE 8000 FEET.

* TIMING: LATE TUESDAY NIGHT TROUGH WEDNESDAY NIGHT.

* LOCATIONS INCLUDE: HIGHER ELEVATIONS OF YOSEMITE PARK INCLUDING
BADGER PASS...HUNTINGTON LAKE...WISHON...SHAVER LAKE...DINKEY
CREEK.

* WINDS: SOUTHWEST 20 TO 30 MPH WITH GUSTS TO 45 MPH.

* IMPACTS: ALL ROADS ABOVE 6000 FEET INCLUDING TRAVEL INTO
YOSEMITE PARK ALONG HIGHWAY 41 THROUGH CHINQUAPIN AND POINTS
ABOVE 6000 FEET...HIGHWAY 168 TO HUNTINGTON LAKE...DINKEY CREEK
ROAD TO WISHON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$
Re: Special Weather Statement
May 24, 2010 07:43PM
Can I infer that if there will be SNOW ACCUMULATIONS: 6 TO 8 INCHES ABOVE 6000 FEET that I can expect rain only around 5000 feet? I am planning to test my cold weather gear this weekend near Truckee. Cold weather I want, 6 inches of snow might be a bit much.White flag
avatar Re: Special Weather Statement
May 24, 2010 07:58PM
Quote
traildad
can expect rain only around 5000 feet?

I wouldn't count on it just being rain.
avatar Winter Storm Warning
May 25, 2010 12:45AM
Winter Storm Warning
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE HANFORD CA
829 PM PDT MON MAY 24 2010

...MORE LATE-SEASON WINTER-LIKE WEATHER FOR CENTRAL CALIFORNIA
THIS WEEK...

.ANOTHER LATE SEASON WEATHER SYSTEM FROM THE PACIFIC WILL MOVE
INTO NORTHERN CALIFORNIA TUESDAY AFTERNOON REACHING THE SOUTHERN
SIERRA NEVADA BY LATE TUESDAY NIGHT. PERIODS OF MODERATE TO
OCCASIONALLY HEAVY SNOW ALONG WITH LOCALLY GUSTY SOUTHWEST WINDS
WILL BE POSSIBLE ACROSS THE HIGHER ELEVATIONS OF THE SOUTHERN
SIERRA NEVADA LATE TUESDAY NIGHT INTO LATE WEDNESDAY NIGHT.
UNSETTLED WEATHER WILL LIKELY CONTINUE INTO FRIDAY.

CAZ096-251100-
/O.CON.KHNX.WS.W.0014.100526T0600Z-100527T1100Z/
SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON-
829 PM PDT MON MAY 24 2010

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM TUESDAY TO
4 AM PDT THURSDAY ABOVE 6000 FEET...

A WINTER STORM WARNING ABOVE 6000 FEET REMAINS IN EFFECT FROM
11 PM TUESDAY TO 4 AM PDT THURSDAY FOR THE SOUTHERN SIERRA NEVADA
FROM YOSEMITE TO KINGS CANYON.

* SNOW ACCUMULATIONS: 6 TO 8 INCHES ABOVE 6000 FEET AND 8 TO 12
INCHES ABOVE 8000 FEET.

* TIMING: LATE TUESDAY NIGHT TROUGH WEDNESDAY NIGHT.

* LOCATIONS INCLUDE: SHAVER LAKE

* WINDS: SOUTHWEST 20 TO 30 MPH WITH GUSTS TO 45 MPH.

* IMPACTS: ALL ROADS ABOVE 6000 FEET INCLUDING TRAVEL INTO
YOSEMITE PARK ALONG HIGHWAY 41 THROUGH CHINQUAPIN AND POINTS
ABOVE 6000 FEET...HIGHWAY 168 TO HUNTINGTON LAKE...DINKEY
CREEK ROAD TO WISHON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$


Hazardous Weather Outlook
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
436 AM PDT MON MAY 24 2010

CAZ096-251200-
SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON-
436 AM PDT MON MAY 24 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE SOUTHERN SIERRA NEVADA
FROM YOSEMITE TO KINGS CANYON.

.DAY ONE...TODAY AND TONIGHT

WINTER LIKE STORM WILL BE MOVING INTO THE AREA ON TUESDAY NIGHT.
NO HAZARDOUS WEATHER IS EXPECTED TODAY OR TONIGHT AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

A WINTER STORM WATCH IS IN EFFECT FROM 11 PM PDT TUESDAY UNTIL 11
PM PDT WEDNESDAY. FOR DETAILS...PLEASE REFER TO THE WEATHER
MESSAGE /SFOWSWHNX OR WWUS46 KHNX/ ISSUED BY THE NATIONAL WEATHER
SERVICE FORECAST OFFICE IN HANFORD.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION WILL NOT BE NEEDED.

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT OR
UNUSUAL CONDITIONS TO THE NATIONAL WEATHER SERVICE.

$$

JDB
Re: Special Weather Statement
May 25, 2010 04:00PM
Weather radar at 4 PM is showing a lot of precip coming in.
avatar Re: Special Weather Statement
May 25, 2010 04:01PM
Quote
Louis
Weather radar at 4 PM is showing a lot of precip coming in.

avatar Re: Special Weather Statement
May 25, 2010 04:12PM
Quote
eeek
Quote
Louis
Weather radar at 4 PM is showing a lot of precip coming in.



By the way, for anyone that doesn't know how to interpret the dBZ scale, here is a nice link:
http://www.eos.ubc.ca/courses/atsc201/A201Resources/RadarStormInterpTutorial/RadarReflectInterp.html
avatar Winter Storm Warning
May 26, 2010 04:18PM
Winter Storm Warning
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE HANFORD CA
1149 AM PDT WED MAY 26 2010

...WINTRY WEATHER TO CONTINUE THROUGH THURSDAY NIGHT IN THE
SOUTHERN SIERRA NEVADA...

.SNOWFALL WILL REMAIN MAINLY LIGHT AND SCATTERED TODAY IN THE
SOUTHERN SIERRA NEVADA. AN AREA OF LOW PRESSURE WILL APPROACH
CALIFORNIA TONIGHT...BRINGING AN INCREASE IN SNOW INTENSITY AND
COVERAGE. WIDESPREAD ACCUMULATING SNOW IS EXPECTED FROM LATE
TONIGHT THROUGH THURSDAY NIGHT ABOVE 5000 FEET...WHERE ANYWHERE
FROM A FEW INCHES...UP TO 8 INCHES OF ADDITIONAL SNOWFALL CAN BE
EXPECTED...WITH THE HEAVIEST SNOW NEAR YOSEMITE PARK.

CAZ096-270300-
/O.CON.KHNX.WS.W.0014.000000T0000Z-100528T1200Z/
SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON-
1149 AM PDT WED MAY 26 2010

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM PDT FRIDAY
ABOVE 5000 FEET...

A WINTER STORM WARNING ABOVE 5000 FEET REMAINS IN EFFECT UNTIL
5 AM PDT FRIDAY FOR THE SOUTHERN SIERRA NEVADA FROM YOSEMITE TO
KINGS CANYON.

* IMPACTS: TRAVEL WILL BECOME HAZARDOUS ABOVE 5000 FEET
INCLUDING TRAVEL INTO YOSEMITE ALONG HIGHWAY 41...HIGHWAY 168
FROM SHAVER LAKE TO HUNTINGTON LAKE...AND DINKEY CREEK ROAD
INTO WISHON. OUTDOOR ENTHUSIASTS TRAVELING TO THE SOUTHERN
SIERRA SHOULD BE PREPARED FOR DANGEROUS WINTER WEATHER
CONDITIONS.

* SNOW LEVELS: ABOVE 6000 FEET TODAY...BUT WILL STEADILY DROP
BEGINNING TONIGHT...AND LOWER DOWN TO 4500 FEET THURSDAY
NIGHT.

* SNOW ACCUMULATIONS: UP TO 4 INCHES AT 5000 FEET THURSDAY
NIGHT...AND UP TO 8 INCHES OF NEW SNOW ABOVE 7000 FEET FROM
TONIGHT THROUGH THURSDAY NIGHT. THE HEAVIEST SNOW IS LIKELY
AROUND YOSEMITE NATIONAL PARK.

* TIMING: A LULL IN THE SNOW IS EXPECTED TODAY WITH ONLY SCATTERED
LIGHT SNOW SHOWER ACTIVITY. BY LATE TONIGHT... HOWEVER...SNOW
WILL INCREASE IN INTENSITY AND COVERAGE...AND CONTINUE THROUGH
THURSDAY NIGHT.

* LOCATIONS INCLUDE: YOSEMITE NATIONAL PARK INCLUDING TUOLUMNE
MEADOWS AND TENAYA LAKE...HUNTINGTON LAKE...SHAVER LAKE...AND
WISHON.

* WINDS: SOUTHWEST 20 TO 30 MPH WITH GUSTS UP TO 45 MPH OVER
THE RIDGES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL
MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

DS
avatar Forecast Discussion
May 26, 2010 04:19PM
000
FXUS66 KHNX 262100
AFDHNX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
200 PM PDT WED MAY 26 2010

.SYNOPSIS...
WINTRY WEATHER CONDITIONS ARE EXPECTED IN THE SOUTHERN SIERRA NEVADA
FROM TONIGHT THROUGH FRIDAY MORNING. RAIN IS LIKELY IN PORTIONS OF
THE SAN JOAQUIN VALLEY ON THURSDAY AS AN AREA OF LOW PRESSURE HEADS
INTO CENTRAL CALIFORNIA. TEMPERATURES WILL REMAIN BELOW NORMAL
THROUGH THE END OF THE WORK WEEK...HOWEVER A STRONG WARM UP IS
EXPECTED EARLY INTO MID NEXT WEEK.

&&

.DISCUSSION...
KHNX 88D SHOWING SOME SHOWERS HAVE BROKEN OUT IN MERCED COUNTY
AND OVER THE SOUTHERN SIERRA NEVADA. MESOWEST OBSERVATIONS ARE
INDICATING THE SNOW LEVEL IS RUNNING ABOVE 9000 FEET...BUT SNOW
LEVELS WILL LOWER AS COLDER AIR FILTERS INTO OUR AREA THIS
EVENING. VISIBLE SAT PICS SHOWING INCREASED CLOUDS FROM FRESNO
COUNTY NORTHWARD...BUT SOUTH OF FRESNO COUNTY SKIES ARE MOSTLY
SUNNY AT THIS TIME. WV INDICATING THE LARGE UPPER LOW OFF THE PAC
NW COAST IS NOW BEGINNING TO DROP SOUTHEAST TOWARD NORCAL. 12Z
WRF/GFS INDICATING SHORTWAVE ENERGY ROTATING AROUND THIS UPPER LOW
WILL MOVE INTO OUR AREA TONIGHT SPREADING INCREASED CLOUDS AND
SHOWERS INTO OUR AREA ALONG WITH COOLER AIR. THE SHOWER ACTIVITY
WILL BE MOST NOTICEABLE FROM FRESNO COUNTY NORTHWARD WHERE
PRECIPITATION WILL BECOME LIKELY BY THURSDAY AFTERNOON AS THE
UPPER LOW BEGINS TO PUSH EASTWARD ACROSS NORCAL. TEMPERATURES ON
THURSDAY WILL CONTINUE THEIR DOWNWARD TREND AS THE LOW TO OUR
NORTH PROVIDES OUR AREA WITH UNSEASONABLY COOL AIR FOR LATE MAY.
HOWEVER...THE MAIN UPPER COLD POOL WITH THIS SYSTEM WILL REMAIN
NORTH OF OUR AREA...AND THE 12Z MODELS KEEP THE CAPE AND INSTABILITY
THAT WOULD BE SUFFICIENT FOR THUNDERSTORM DEVELOPMENT WELL TO THE
NORTH OF OUR CWFA. HAVE THEREFORE REMOVED MENTION OF THUNDERSTORMS
FOR THE NORTHERN HALF OF OUR AREA FOR THURSDAY. SNOW ACCUMULATIONS
WITH THIS SYSTEM WILL BE MOST SIGNIFICANT AROUND YOSEMITE PARK
WHERE UP TO 8 INCHES OF NEW SNOW WILL BE POSSIBLE NEAR THE RIDGE
TOPS BY FRIDAY MORNING. ALTHOUGH SNOW LEVELS ARE FAIRLY HIGH AT
THIS TIME...SNOW LEVELS WILL LOWER TO AROUND 5000 FEET BY THURSDAY
NIGHT WITH CAA TAKING PLACE. SINCE THIS STORM IS OUT OF SEASON
WILL LET THE WINTER STORM WARNING RIDE FOR THE SOUTHERN SIERRA
NEVADA FROM KINGS CANYON NORTHWARD THROUGH THURSDAY NIGHT. SOUTH
OF KINGS CANYON ONLY SCATTERED SHOWERS ARE EXPECTED...BUT SOME
RIDGE TOPS MAY PICK UP A FEW INCHES OF FRESH SNOWFALL BY THURSDAY
NIGHT. A SPECIAL WEATHER STATEMENT WAS ISSUED TO HIGHLIGHT THE
SNOWFALL POTENTIAL FOR THE SOUTHERN SIERRAS IN TULARE COUNTY.

MODELS ARE INDICATING THE UPPER TROUGH PUSHING EAST INTO THE GREAT
BASIN ON FRIDAY WITH BACKLASH MOISTURE PROVIDING FOR SOME RESIDUAL
SHOWERS OVER THE SOUTHERN SIERRA NEVADA. MEANWHILE...DRYER AIR
WILL ALLOW FOR SKIES TO CLEAR OUT OVER THE SAN JOAQUIN VALLEY ON
FRIDAY. THE 12Z NAM AND GFS INDICATE A DRY UPPER RIDGE BUILDING
INTO CA ON SATURDAY CORRESPONDING TO THE LONG WAVE PATTERN CHANGE
THAT HAS BEEN ADVERTISED TO TAKE PLACE OVER THE WEEKEND FOR SOME
TIME.

THE 12Z RUNS OF THE GFS AND ECMWF ARE SHOWING A BROAD UPPER RIDGE
OVER CA FROM SUNDAY THROUGH AT LEAST THE MIDDLE OF NEXT WEEK. THIS
WILL KEEP OUR AREA DRY FOR THE EXTENDED PERIOD AND PROVIDE OUR
AREA WITH MUCH WARMER TEMPERATURES AS HEIGHTS AND THICKNESSES RISE
IN A DRY ATMOSPHERE. IN FACT...BY THE FIRST OF JUNE TEMPERATURES
ARE EXPECTED TO BE ABOVE SEASONAL NORMALS WHICH MEANS THAT
PORTIONS OF THE CENTRAL AND SOUTH SAN JOAQUIN VALLEY WILL HAVE
AFTERNOON HIGHS IN THE 90S.

&&

.AVIATION...
IN THE SOUTHERN SIERRA...AREAS OF IFR/MTN OBSCURATIONS IN CLOUDS
AND WIDELY SCT SHOWERS THRU 12Z THURS...THEN WIDESPREAD IFR/MTN
OBSCURATION IN CLOUDS/PRECIP THRU 00Z FRI. IN THE KERN COUNTY
MOUNTAINS AND DESERTS...PATCHES OF MVFR CLOUDS OVER
MTNS...OTHERWISE VFR THRU 00Z FRI. FOR THE SAN JOAQUIN
VALLEY...VFR THRU 00Z FRI EXCEPT AFTER 15Z THURS LOCAL MVFR IN
AREAS OF LIGHT RAIN FROM FRESNO NORTH.

&&

.AIR QUALITY ISSUES...NONE.

&&

.HNX WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WARNING UNTIL 5 AM PDT FRIDAY ABOVE 5000 FEET FOR
THE CAZ096.

&&

$$

PUBLIC...DS
AVN/FW...BINGHAM
SYNOPSIS...TLM
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