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Flash Flood Watch

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Flash Flood Watch
July 30, 2011 09:41AM
Flash Flood Watch

FLOOD WATCH
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
313 AM PDT SAT JUL 30 2011

...MONSOONAL MOISTURE TO BRING A THREAT OF WEEKEND THUNDERSTORMS
TO THE SOUTHERN SIERRA AND THE KERN COUNTY MOUNTAINS AND DESERT...

.MONSOONAL MOISTURE MOVING FROM THE SOUTHEAST WILL BRING A THREAT
OF THUNDERSTORMS TO THE SOUTHERN SIERRA NEVADA AND THE KERN COUNTY
MOUNTAIN AND DESERT AREAS. IN THE KERN COUNTY DESERT...LOCALLY HEAVY
RAINFALL COULD RESULT IN FLASH FLOODING OF DRY WASHES AND
ARROYOS...AS WELL AS NORMALLY FLOOD PRONE AREAS. AS FOR THE MOUNTAIN
AREAS...INCLUDING IN KERN COUNTY AND THE SOUTHERN SIERRA
NEVADA...SLOW MOVING THUNDERSTORMS COULD CAUSE FLASH FLOODING IN
NARROW CANYONS AND IN RECENT BURN AREAS WHERE VEGETATION HAS NOT
RECOVERED.

CAZ096-301830-
/O.EXA.KHNX.FF.A.0005.110730T1900Z-110801T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON-
313 AM PDT SAT JUL 30 2011

...FLASH FLOOD WATCH IN EFFECT FROM NOON PDT TODAY THROUGH LATE
SUNDAY NIGHT...

THE NATIONAL WEATHER SERVICE IN HANFORD HAS EXPANDED THE

* FLASH FLOOD WATCH TO INCLUDE A PORTION OF CENTRAL CALIFORNIA...
INCLUDING THE FOLLOWING AREA...SIERRA NEVADA FROM YOSEMITE TO
KINGS CANYON.

* FROM NOON PDT TODAY THROUGH LATE SUNDAY NIGHT

* SLOW MOVING THUNDERSTORMS MAY PRODUCE LOCALLY HEAVY RAINS.

* AREAS MOST VULNERABLE TO FLOODING WILL INCLUDE ROADS ALONG THE
FLANKS OF MOUNTAINS AND RECENT BURN AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$

WEATHER.GOV/HANFORD
Re: Flash Flood Watch
July 30, 2011 10:43AM
Do take these flood watches in consideration...

Yesterday there was a severe thunderstorm warning up Bishop Creek Canyon at about 3pm, centered over Aspendell moving to over Big Trees campground. Haven't been able to get any further info.

Also the was a flash flood above Whitney Portal. The Mount Whitney trail closed at 11pm. Some hikers were stranded between Trail Camp and the portal. The campground had some mud come through. The road is now open and the trail was expected to reopen at 9am today.

Clouds were already forming above Mount Tom this morning at 6:30 am. Expect round 2 today...localized heavy rain.



Edited 1 time(s). Last edit at 07/30/2011 10:44AM by hikerchick395.
Re: Flash Flood Watch
July 30, 2011 12:09PM
At noon some thunderstorms were already popping up on radar.
avatar Hazardous weather outlook
July 30, 2011 12:10PM
Hazardous weather outlook
National weather service san joaquin valley - hanford ca
353 am pdt sat jul 30 2011

Caz095>099-311230-
Kern county mountains-sierra nevada from yosemite to kings canyon-
Tulare county mountains-indian wells valley-
Southeastern kern county desert-
353 am pdt sat jul 30 2011

...Flash flood watch in effect for this afternoon and into late
Sunday night...

This hazardous weather outlook is for the southern sierra
Nevada...And the kern county mountain and desert areas.

.Day one...Today and tonight

A flash flood watch is in effect this afternoon and tonight.
Scattered thunderstorms are expected to develop over the
Area. These storms have the potential to move slowly and produce
Heavy rainfall.

.Days two through seven...Sunday through friday

The flash flood watch will remain in effect until late sunday
Night.

.Spotter information statement...

Skywarn spotter activation is not anticipated.

Weather spotters are encouraged to report any significant or
Unusual conditions to the national weather service.

$$
Re: Flash Flood Watch
July 30, 2011 12:34PM
Steady thunder already at 12:15pm over Mount Tom and the Wheeler Crest...
avatar Re: Flash Flood Watch
July 30, 2011 01:56PM
Quote
hikerchick395
Steady thunder already at 12:15pm over Mount Tom and the Wheeler Crest...

Wet at Lee Vining: http://www.monolake.org/livedata/newcamera0-0.jpg
avatar Re: Flash Flood Watch
July 30, 2011 03:29PM
Too bad that the Tioga Pass webcam isn't operational yet.

Fortunately, the CNAP/CCCC did receive funding from the Dave Peterson Memorial Fund to replace the Tioga Pass webcam that was damaged by a lighting strike. They expect the webcam to be back in operation later this summer if everything goes as scheduled.
avatar Re: Flash Flood Watch
July 30, 2011 03:37PM
Quote
plawrence
Too bad that the Tioga Pass webcam isn't operational yet.

Fortunately, the CNAP/CCCC did receive funding from the Dave Peterson Memorial Fund to replace the Tioga Pass webcam that was damaged by a lighting strike. They expect the webcam to be back in operation later this summer if everything goes as scheduled.


For those that don't know what the initialisms represent:
http://meteora.ucsd.edu/cap/
avatar Re: Flash Flood Watch
July 30, 2011 04:08PM
Quote
szalkowski
Quote
plawrence

Too bad that the Tioga Pass webcam isn't operational yet.

Fortunately, the CNAP/CCCC did receive funding from the Dave Peterson Memorial Fund to replace the Tioga Pass webcam that was damaged by a lighting strike. They expect the webcam to be back in operation later this summer if everything goes as scheduled.


For those that don't know what the initialisms represent:
http://meteora.ucsd.edu/cap/

They ought to get a better name, or at least come up with a better acronym. wink
avatar Re: Flash Flood Watch
July 30, 2011 04:59PM
Is this type of storm unusual in this area for late July/August?
avatar Re: Flash Flood Watch
July 30, 2011 05:06PM
Quote
Paris92
Is this type of storm unusual in this area for late July/August?

Not really.
avatar Re: Flash Flood Watch
July 30, 2011 05:34PM
Absolutely not.

Monsoon season brings about these types of thunder storms on a regular basis to the High Sierra in the later summer months.
Re: Flash Flood Watch
July 30, 2011 07:29PM
They have a fire on Geiger Grade near Virginia City. Probably caused by lightning. The internet just came back up at Tahoe. Also probably knocked off by lightning.
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