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.
On the eastern slopes of the High Sierra where I live, we should get around 12 feet of new snow by Tuesday. And yeah, this is normal.
GOOD years? Eight feet of snow all at once? You must be a skier! Where does one begin to plow?
How do you get out of your house with 12 feet of snow? Or when do you get out?
You just wait for the snowplows to clear the roads and then get your snowblower and shovels out and get to work. Back in the Winter of ‘68-’69 we had over 30 feet of snow out of one storm and were snowed in (trapped in our homes) for several weeks.
The 2 feet of snow that shut down Washington DC and the entire east coast last Winter, would be considered a slight nuisance here in the mountains of California.
Heaviest at that high elevation ....too cold to ever come down as rain this time of year.
Inyo can tell you his elevation and what he will get at that elevation.
The Mountain peaks on the north and East of the LA area are much lower...Mt Baldy is 10,000+ and St Gioriono (sp?) is 11,000+
The I - 15 runs between them on the way up to the Cajon Summit at 4000+ ....and on out to Las Vegas and the Barstow connection to the I - 40 at Barstow.
It’ll hafta be at the highest elevations because it is now raining pretty close to the I-80 summit!!!
What is the elevation at the I-80 summit and what might be your elevation....?
Are you a flat lander?
I'm at a lowly 1500'
I'm above the fog and smog of liberalism and below the snowjob of global warmning!!! (grin)
No concerns about snow.
just worry about crowds.
I feel for all y’all in Kalifornia. The Pineapple Express is getting really wound up. Weather Underground has a great radar loop of the Pacific. There is a whole lot more coming your way.
nite all!
Got a short walk in and time for some rest.
Mother nature is blessing us ....we need it!
They start on top of the snowpack and work down. It's kind of funny, but the Eastern Sierra is at the edge of the Great Basin Desert on the Nevada border, so the snow is hauled out in trucks and dumped into the desert, about a 40 mile drive.
Here I thought 8 ft was unreal. I had no idea it got that bad - I would expect this in Alaska. I guess if this is somewhat normal, you have a generator otherwise several weeks w/o FR? ;)
Actually, we get a LOT more snow than Alaska. The Sierra of California has some of the highest snowfall totals in the entire U.S.A. Think Donner party. Generators, kerosene lamps and woodstoves help. In the last few decades haven't been without power more than a few days at a time, but yes it is hard without FR!
Check out hte link at post #71.
That may look like heavy rain but it is just a mist here .
Oregon got hit hard last week even had an F-2 touch down in Aumsville and it is thought a torando or water spout took off a hotel roof (the whole thing).
Wild wicked weather.
The artic cold is now moving down on us at the Oregon Coast so I suppose our crazy El Nina/El Nino is going to hit ya’ll.
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