Skip to comments.SPECIAL WEATHER STATEMENT FOR CENTRAL AND SOUTHERN CALIFORNIA
Posted on 12/17/2010 7:42:32 PM PST by Ernest_at_the_Beach
STRONG PACIFIC STORM SYSTEMS WILL BRING HIGH RAIN AMOUNTS TO SOUTHERN CALIFORNIA THROUGH AT LEAST WEDNESDAY...
MOIST WEST TO SOUTHWEST FLOW ACROSS THE PACIFIC OCEAN WILL SEND A GREAT AMOUNT OF SUBTROPICAL MOISTURE INTO CENTRAL AND SOUTHERN CALIFORNIA FOR MOST OF THE COMING WEEK. A SERIES OF WAVES WILL IMPACT THE REGION AND PERIODS OF SIGNIFICANT RAINFALL ARE EXPECTED.
FOR THIS WEEKEND...THE FOCUS OF THIS MOISTURE WILL BE FROM CENTRAL CALIFORNIA TO THE LOS ANGELES AREA...SO AREAS FARTHER SOUTH TOWARD SAN DIEGO WILL BE ON THE EDGE OF THE HEAVIEST RAIN AND WILL NOT GET QUITE AS MUCH. IN ADDITION...LOW LEVEL WINDS FROM THE SOUTHWEST WILL PRODUCE MUCH HIGHER RAINFALL IN THE MOUNTAINS THAN IN THE LOWLANDS.
THE FIRST WAVE WILL IMPACT SOUTHERN CALIFORNIA TONIGHT AND SATURDAY AND BRING STEADY LIGHT TO MODERATE RAIN. A SECOND WAVE WILL ARRIVE SUNDAY AND BRING SOMEWHAT HEAVIER RAINFALL...THOUGH STILL A STEADY RAIN. THE RAIN WILL BECOME LIGHTER BY MONDAY.
TOTAL RAINFALL ESTIMATES FOR THIS AFTERNOON THROUGH SUNDAY NIGHT ARE AS FOLLOWS:
SAN DIEGO COUNTY COAST 1.00 TO 1.50 INCHES SAN DIEGO COUNTY VALLEYS 1.50 TO 2.00 INCHES ORANGE COUNTY COAST 1.50 TO 2.50 INCHES INLAND EMPIRE 1.25 TO 3.00 INCHES (HIGHEST NORTH) SAN DIEGO COUNTY MOUNTAINS 2.00 TO 5.00 INCHES RIVERSIDE COUNTY MOUNTAINS 2.50 TO 5.00 INCHES SANTA ANA MOUNTAINS 3.00 TO 6.00 INCHES SAN BERNARDINO COUNTY MTNS 4.00 TO 8.00 INCHES
NOTE THAT MOUNTAIN TOTALS WILL BE HIGHLY VARIABLE. FOR THE DESERTS...
SAN DIEGO COUNTY DESERTS AROUND ONE-HALF INCH COACHELLA VALLEY LESS THAN ONE INCH APPLE AND LUCERNE VALLEYS AROUND ONE INCH
HEAVY RAINFALL ACCUMULATIONS ARE EXPECTED...BUT THEY WILL BE DUE TO LONG DURATIONS AND NOT DUE TO HEAVY INTENSITIES. THEREFORE...THE FLASH FLOOD THREAT WILL BE FAIRLY LOW OVER THE WEEKEND. HOWEVER...SOME LOW LYING SPOTS...ESPECIALLY ALONG STREETS...COULD HAVE MINOR FLOODING...ESPECIALLY SUNDAY. STREAMS AND WASHES WHICH MIGHT NORMALLY BE DRY COULD HAVE WATER FLOWING THROUGH THEM THIS WEEKEND.
SNOW LEVELS WILL BE QUITE HIGH THROUGH MONDAY. SNOW ACCUMULATIONS WILL REMAIN ABOVE 8000 FEET...CONFINED TO THE HIGHEST PEAKS OF SAN BERNARDINO AND RIVERSIDE COUNTIES.
BREEZY SOUTH TO SOUTHWEST WINDS WILL INCREASE DURING THE WEEKEND WITH THE MOUNTAIN WIND SPEEDS AS HIGH AS 25 TO 35 MPH WITH SOME GUSTS TO 50 MPH. STRONGEST WINDS WILL BE ON THE RIDGES AND DESERT SLOPES.
FOR EARLY NEXT WEEK...THE STRONG JET STREAM WILL SHIFT SOUTH INTO SOUTHERN CALIFORNIA AS THE EAST PACIFIC TROUGH MOVES TO THE COAST. THIS WILL BRING SEVERAL PERIODS OF HEAVY RAIN ANYWHERE FROM TUESDAY AFTERNOON THROUGH WEDNESDAY NIGHT. THE HEAVY RAIN WILL FALL ON TOP OF SATURATED SOILS AND COULD PRODUCE FLASH FLOODING THEN. DUE TO THE SOUTHWESTERLY FLOW ALOFT...SNOW LEVELS WILL REMAIN HIGH.
RESIDENTS AND VISITORS OF SOUTHERN CALIFORNIA SHOULD STAY INFORMED DURING THIS UPCOMING WET WEATHER. CONTINUE TO MONITOR THE LATEST NATIONAL WEATHER SERVICE FORECASTS AND STATEMENTS.
Can’t wait to go to the beach and watch the waves crashing.
I was out shopping in it today and it was a soaking rain!
We leave Sunday AM to go up the coast by train. Hoping that there won’t be problems with mudslides.
Heavier rain is after Sunday it says.
I remember getting 7.5 inches in one hour in Vicksburg. California has no freaking clue about weather....like so many other things in this ....."state".....or is it just a plastic, inflatable wiener-world?
The snow in the Sierra mountains is the REAL DEAL!
Traffic is more snarled than usual in San Diego. Looking
forward to returning home to Idaho on Thursday...if
only for a week with my family.
Hey tubebender I am sure you are aware of this event that is headed your way! Stay dry.
My son is headed out tomorrow on storm work somewhere in the Sierras. I suppose they won’t know for sure where until they leave. That’s how it usually works.
Can’t imagine what it will be like working in snow levels like that.
We are getting a ton of rain up North also. Snow level is below the 8000 ft. mark here.
Quite a few years ago in Naperville Illinois we got 20 inches of rain in a 24 hour period.
77-78 Canoed down MB Boulevard in SD!
Just looking at what is coming at us at THIS LINK (click on 'Loop 12) makes prior storms pale in comparison. There is one bright side to it - for the time being it looks like this will sail through rather rapidly, rather than sitting on top of us for days or hours within days.
They are calling for 10 to 12 feet of new snow on Mammoth Mountain amd 4 to 6 feet in the Town of Mammoth over the next few days.
At least Central California will finally get some water.
At least Central California will finally get some water.
That is a bunch...but is it more than usual....??
Puftt. Radar shows the whole state in getting dumped on but ours just started around 6 this evening and it rained hard for a hour...
Forgot to say - look at the monster-amount of rain just west of Hawaii - all of it (or most of it) appears headed California way pretty fast...
I remember that. My son had a garden apt (street level) and the water came through the window - his place was flooded. It wasn’t Naperville but, IIRC, River Grove? Or something Grove.
We don’t like no stinking weather!
No, it is normal for a storm like this in December.
Thanks,...looks like the really heavy stuff is up toward San Francisco.
Do you think it will get there by Sunday. My daughter is traveling to LA on Sunday till Wednesday.
Petaluma has been a light rain. Been watching the NOAA forecasts. They were talking floods and power outages. pshaw! Barometer dropped from 29.8 to 29.6 since yesterday.
Better have Jim check the pontoons on levee around the FR server farm..
Flood Watch in the FResno area
From what the forecasters are predicting, I’m gonna have to drain some water from the pool. :)
Surf’s Up, Dude!
one heckuva lot of glob west of the hawaiian islands ..
It will be here tomorrow - and by Sunday be pretty heavy, without much doubt.
No breaks at all!
No thanks to our vaunted leaders.
Thanks to God.
Jim! Be safe, keep your servers (and powder) dry.
For now it’s mostly central CA - but moving South as this thing gathers up all that moisture west of Hawaii. (That all came from the ‘ring of fire’ over by Japan and south of there... and we’ll see more of this as winter proceeds.)
“California has no freaking clue about weather....”
The geophysical properties don’t correlate. The West is largely sand..it tends to turn into flash floods and large landslides. A couple of inches of rain can cause huge problems in the West.
In the East you have topsoil, stone and deep rooted trees to hold the soil in place, so you can withstand a much larger deluge.
Not so much down here...it just runs off back into the Ocean...does clean the gunk off the roadways.
Need to get those Sat views. onto the thread.
We’ve had ten inches of snow so far, but it has come down an inch at a time, and on the odd sunny day vanishes for the most part. It’s back to bitter cold right now, but that’ll probably change. I heard that the forecast was for a lot of snow here, lake effect, because (what else?) it wasn’t expected to get cold enough for Lake Michigan to freeze over.
Here are some websites
GOES 14 Satellite of North America,tracking the
Storm at 22,000 miles up.
Appalachians and Great Lakes Snow Conditions & Weather Map
(Change it to where you are!)
(Again,change it to your local)
North American Radar Stations
U.S. NEXRAD and TDWR Radar Stations
canopfor on December 12, 2010 at 7:50 PM
I like this interactive map
Thank you. Wondering if her flight will be canceled.
Them Thar are a classic La Nina connection Norm...
We be hosed, Bro.
Looks like a mess lies ahead.. a big wet one..
Mild tonight...56 ...
West Slope Northern Sierra Nevada
Forecasts for California
Current Severe Weather
Winter Storm Warning
Statement as of 8:05 PM PST on December 17, 2010
... Winter Storm Warning remains in effect until 10 PM PST Sunday
above 5000 feet...
A Winter Storm Warning heavy snow above 5000 feet remains in
effect until 10 PM PST Sunday.
* Snow accumulations: six to eight feet of snow above 7000
feet... especially south of Interstate 80... by Monday
morning. Two to four feet of snow above 5000 feet.
* Elevation: above 5000 feet.
* Timing: snow will fall throughout the warning period. Very
heavy snow is expected tonight... and again tomorrow night
into Sunday afternoon. Snow will taper off to scattered snow
showers late Sunday night. Snow may mix with or change to
rain over Donner Pass and Carson Pass tonight.
* Locations include: the west slopes of the northern Sierra Nevada
including Interstate 80 and highways 50 and 88.
* Winds: south to southwest winds of 20 to 35 mph. Over the
higher passes and exposed areas... southwest wind gusts up to
70 mph are possible.
I've also hit the ceiling of one aircraft in one of those storms - when we hit a sever downdraft. Everyone was told to belt up - afterward... lol
The WEST needs Lots and Lots of moisture...bring it on!!!
But save some water for us...we like that water from up North!