CA: FLASH FLOOD WATCH ( Southern California) in effect until Wednesday, Dec 22, 2:00 PM

Accuweather ^ | Monday, Dec 20, | NWS

[Ernest_at_the_Beach]

..FLASH FLOOD WATCH IN EFFECT FROM NOON PST TODAY THROUGH WEDNESDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A

* FLASH FLOOD WATCH FOR A PORTION OF SOUTHWEST CALIFORNIA... INCLUDING THE FOLLOWING AREAS...APPLE AND LUCERNE VALLEYS... COACHELLA VALLEY...ORANGE COUNTY COASTAL AREAS...RIVERSIDE COUNTY MOUNTAINS...SAN BERNARDINO COUNTY MOUNTAINS...SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE... SAN DIEGO COUNTY COASTAL AREAS...SAN DIEGO COUNTY DESERTS... SAN DIEGO COUNTY MOUNTAINS...SAN DIEGO COUNTY VALLEYS AND SANTA ANA MOUNTAINS AND FOOTHILLS.

* A LARGE PACIFIC PLUME OF MOISTURE AHEAD OF AN ADVANCING TROUGH OF LOW PRESSURE IS EXPECTED TO BRING HEAVY RAINS AND THE POTENTIAL FOR AREAS OF SERIOUS FLOODING...

* FROM NOON PST TODAY THROUGH WEDNESDAY AFTERNOON

* RAINFALL RATES NEAR OR GREATER THAN ONE INCH PER HOUR ARE POSSIBLE AT TIMES...ESPECIALLY IN THE MOUNTAINS.

* EXCESSIVE RUNOFF MAY ALSO CAUSE FLOODING OF MOST STREAMS AND WASHES...AND ALONG LOW LYING AREAS ADJACENT TO MAJOR RIVERS.

* MUD AND DEBRIS FLOWS AREA ALSO POSSIBLE...ESPECIALLY BELOW STEEP TERRAIN AND AREAS WITH LITTLE TO NO VEGETATION.

* RUNOFF COMING OUT OF THE MOUNTAINS WILL FILL AND COULD OVERFLOW STREAMS ON THE DESERT SLOPES OF THE MOUNTAINS...THUS THE DESERTS ARE INCLUDED IN THIS FLASH FLOOD WATCH.

* STRONG THUNDERSTORMS COULD ACCOMPANY A COLD FRONT ON WEDNESDAY. WITH THE RAINFALL ALREADY RECEIVED...THIS ADDITIONAL SIGNIFICANT RAINFALL WILL CONTINUE THE THREAT OF MUD AND DEBRIS FLOWS... PARTICULARLY IN AND AROUND THE 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.

[Ernest_at_the_Beach]

Earlier thread:

SPECIAL WEATHER STATEMENT FOR CENTRAL AND SOUTHERN CALIFORNIA

Friday December 17, 2010 | NWS

[al baby]

Its been a few years since we have had a good live storm watch thread. Wear your Rubbers.

[Ernest_at_the_Beach]

Caps courtesy of the NWS and their special equipment:

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[Ernest_at_the_Beach]

See 32....we were going pretty good.

I'll pull some stuff across.

[Parmy]

I think they should take out a few more flood control dams so that the rivers can run their natural course. It’s the environmental correct thing to do.

[Parmy]

I think they should take out a few more flood control dams so that the rivers can run their natural course. It’s the environmental correct thing to do.

[Ernest_at_the_Beach]

See link at post #2.....

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Here are some websites
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GOES 14 Satellite of North America,tracking the
Storm at 22,000 miles up.

http://goes.gsfc.nasa.gov/

Full Disc/East

http://goes.gsfc.nasa.gov/goescolor/goeseast/overview2/color_lrg/latestfull.jpg
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Appalachians and Great Lakes Snow Conditions & Weather Map
(Change it to where you are!)

http://www.snow-forecast.com/maps/dynamic/appal
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Current Winds/Speeds/Direction
(Again,change it to your local)

http://www.intellicast.com/National/Wind/Current.aspx?location=USMI0545
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North American Radar Stations
U.S. NEXRAD and TDWR Radar Stations

http://www.wunderground.com/radar/map.asp

canopfor on December 12, 2010 at 7:50 PM

[Ernest_at_the_Beach]

Dramatic image of the PINEAPPLE EXPRESS in action....GOES Satellite movie :

SoCal gets dumped on

[ScottinVA]

I wonder if the Central Valley will, at long last, get some rainwater. Not that it matters in wintertime.

[A CA Guy]

I just hope I won't need chains back and forth to Vegas during X-mas.

All this water is too much at once. Can you imagine all the mud and slides this will create?

[B4Ranch]

SoCal gets dumped on

Hey, they elected these people didn’t they? They deserve what they get from Brown.

[sissyjane]

They’re evacuating a town near Bakersfield this afternoon.
Two thousand people. I didn’t hear the name.

[Ron C.]

It was a moderate rain that greeted me when I headed for the Freeway a bit before 11AM. I found light traffic on the 101, moving at 50 - 60mph, versus the normal 70-75mph... not so bad really.

In the mountains of Malibu there were fewer rock slides than I expected, but things will change for the worse later today and tonight, as the heavier rain arrives.

Here's a snapshot of rain headed toward Malibu at 12:30PM - not what I'd call heavy just yet... just a few red-spots, and they move through very quickly, as this whole front is very fast-moving.

[dfwgator]

“....but when it pours, man it pours.”

[Deo volente]

Heavy rain predicted Tuesday and Wednesday.

The rain has been pretty much continuous here since Friday afternoon...very few breaks.

[Ernest_at_the_Beach]

Related thread Normsrevenge started :

Calif. rain shatters records — and more is coming (How ya doin' CA/NV/WA/OR FReepers?)

[SevenofNine]

OH Man that old school LOL!

[sheana]

McFarland

[dsrtsage]

I’m confused...is this caused by global warming, or if there was a drought would that be caused by global warming?