Registered Member #102 Joined: Mon Oct 30 2006, 01:06PM : Posts: 933
Here we are, this was the computer run i saw Sunday night that ahd PW's close to 1 inch over the san bernardinos which with such cold air what of amounted to a foot of snow.... obviously that scenario changed the next day:
US66 KSGX 050559 AFDSGX
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN DIEGO CA 955 PM PST SUN MAR 4 2012
.SYNOPSIS... HIGH PRESSURE ALOFT WILL BEGIN TO WEAKEN ON MONDAY AND BRING COOLING TO THE COASTAL AREAS...WHILE MOUNTAINS AND DESERTS WILL REMAIN QUITE WARM. ON TUESDAY A STRONG COLD FRONT WILL BRING WINDY...COOLER WEATHER TO ALL AREAS ALONG WITH AREAS OF LIGHT RAIN WEST OF THE MOUNTAINS IN THE AFTERNOON AND EVENING. STRONG AND DAMAGING WINDS ARE POSSIBLE IN THE MOUNTAINS AND DESERTS LATE ON TUESDAY AND TUESDAY NIGHT. WEDNESDAY WILL BE A COOL DAY AS THE STORM MOVES SLOWLY EAST. THURSDAY AND FRIDAY WILL BE WARMER WITH DRY OFFSHORE FLOW AS HIGH PRESSURE REBUILDS OVER THE WEST.
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.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... COCOPUFFS IS PREDICTING MORE PRECIP THAN OUR MODELS INDICATE SO WE ARE GOING TO GO IN BETWEEN THE GFS MODEL AND COCOMODEL.
SEVERAL RECORDS WERE SET TODAY AND ARE HEADLINED ON OUR WEBPAGE. THE HOT SPOT IN THE NATION WAS FULLERTON WITH A HIGH OF 95. THE RIDGE ALOFT THAT BROUGHT THE HEAT TODAY WILL WEAKEN MONDAY. THE OFFSHORE WINDS WILL CEASE MONDAY MORNING AND SHIFT ONSHORE IN THE AFTERNOON. THIS WILL BRING SEVERAL DEGREES OF COOLING WEST OF THE MOUNTAINS AS THE COOLER MARINE AIR SPREADS INLAND. HOWEVER...THE LOWER DESERTS WILL BE AS WARM AS TODAY...OR EVEN A COUPLE DEGREES HIGHER.
ON MONDAY NIGHT AND TUESDAY A POWERFUL...FAST MOVING TROUGH WILL MOVE DOWN THE WEST COAST. FOUR DAYS AGO THIS SYSTEM WAS NOT FORECAST TO BE VERY STRONG. BUT NOW IT IS SHAPING UP TO BE A VERY STRONG AND FAST MOVING STORM THAT WILL BRING STRONG WINDS...SHOWERS AND LOW SNOW LEVELS AS IT MOVES ACROSS SOCAL TUESDAY EVENING.
THE LOW LAYERS WILL BEGIN TO SATURATE TUESDAY WITH INCREASING ONSHORE FLOW. SFC PRESSURE GRADIENTS WILL INCREASE TO 15+ MB AS A DEEP 992 MB SFC LOW FORM OVER SOUTHERN NEVADA TUE AFTERNOON. THIS ALONE WOULD PRODUCE GUSTY WINDS...BUT FACTOR IN STRONG 850 MB WINDS OF 45-50 KTS WITH THE TROUGH AXIS...AND THIS IS SETTING UP TO BE A VERY STRONG WIND EVENT TUESDAY AFTERNOON AND TUESDAY NIGHT. THE STRONGEST WINDS WILL BE OVER THE EASTERN DESERT SLOPES OR ON THE FLOOR OF THE LOWER DESERTS WHERE SURFACING MOUNTAIN WAVES COULD GENERATE ISOLATED DAMAGING GUSTS OF 75 MPH OR MORE. A HIGH WIND WATCH HAS BEEN POSTED IN THE MTNS AND DESERTS.
GUSTY WINDS WILL BE FELT WEST OF THE MOUNTAINS AS WELL AND WIND ADVISORIES MAY BE NEEDED IN THE COASTAL AND VALLEY ZONES. A GALE WATCH IS IN EFFECT FOR THE COASTAL WATERS TUESDAY AFTERNOON AND NIGHT.
WHAT WAS ONCE THOUGHT TO BE A MOISTURE STAVED SYSTEM IN NOW ANYTHING BUT THAT. MODEL MOISTURE PROFILES SHOW SATURATION TO 10KFT FEET OR MORE. THERE IS ALSO A HINT OF HIGHER PW`S OF 0.65-0.90" OVER THE PACIFIC ENTRAINING INTO SOCAL AHEAD OF THE COLD FRONT TUESDAY EVENING. SO THE PRECIP PROBABILITIES AND RAINFALL TOTALS HAVE BEEN RAISED SLIGHTLY. THE STRONG WEST WINDS AND DEEP LAYER MOISTURE WILL PLAY A BIG PART IN OROGRAPHICALLY ENHANCING PRECIP TOTALS ON THE MOUNTAINS SLOPES. FOG WILL LIMIT VIS IN THE MOUNTAINS. ADDITIONALLY...SNOW LEVELS WILL STEADILY FALL THROUGH THE EVENING TO AROUND 3500 FEET WITH RAIN CHANGING TO SNOW. EXPECT A WINTRY MIX OF WEATHER FOR TRAVELERS IN THE MOUNTAINS TUESDAY EVENING AS THICKNESSES LOWER TO 530 DM BY MIDNIGHT.
For Accurate Regional Forecast Go to:http://www.socalweather.net
Yeah I gotcha, from Sunday night. Missed that, thought it was from this morning. Well it is looking fairly impressive to our north right now. Will have to watch and see what she does! FOLLOW @BENSWEATHER NOW ON TWITTER!
NWS ADVISORY FOR UPCOMING STORM MARCH 6 - 7
A matter a fact Firephoto, YES! 
