Alert archive / California / Winter Storm Warnings in 2013
Winter Storm Warning 1, NWS San Diego, CA
NWS San Diego, CA issued this winter storm warning at Jan 9, 2013, 2:09 PM PST for Riverside County, San Bernardino County, San Diego County, California. It took effect at Jan 10, 2013, 6:00 AM PST. It was in force for 16 hr. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jan 9, 2013, 2:09 PM PST (22:09 UTC)
- In effect from
- Jan 10, 2013, 6:00 AM PST
- Expired
- Jan 10, 2013, 10:00 PM PST
- In force
- 16 hr
- Issued by
- NWS San Diego, CA
Counties Riverside County, CA, San Bernardino County, CA, San Diego County, CA
The radar
The Santa Ana Mts radar (KSOX), 122 km from the middle of the area, began a volume at 22:12 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 10, 11:00 AM PST | SNOW 0.5 | Hesperia, CA | SPOTTER REPORTED HALF AN INCH OF SNOW IN HESPERIA AT 3100 FEET AT 11 AM. |
| Jan 10, 1:55 PM PST | SNOW 4.5 | Running Springs, CA | 4.5 INCHES OF TOTAL SNOW REPORTED AT RUNNING SPRINGS AT 155 PM. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 10.2 hours before the alert went out and 145 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2640 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- -2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
230 WWUS46 KSGX 092209 WSWSGX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 209 PM PST WED JAN 9 2013 ...WINTER STORM WARNING FOR THE MOUNTAINS ABOVE 3000 FEET WITH A WINTER WEATHER ADVISORY FOR PORTIONS OF THE UPPER DESERTS FOR THURSDAY THROUGH THURSDAY EVENING DUE TO WIND AND SNOW... .A COLD LOW PRESSURE SYSTEM FROM THE NORTHWEST WILL BRING STRONG WINDS WITH SHOWERS WITH MUCH LOWER SNOW LEVELS FOR THURSDAY INTO THURSDAY NIGHT. WINDS WILL GUST OVER 60 MPH OVER PARTS OF THE MOUNTAINS AND WILL RESULT IN BLOWING SNOW. CAZ056-058-100615- /O.UPG.KSGX.WW.Y.0001.130110T1600Z-130111T0600Z/ /O.NEW.KSGX.WS.W.0001.130110T1400Z-130111T0600Z/ RIVERSIDE COUNTY MOUNTAINS-SAN DIEGO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...AGUANGA...ANZA... GARNER VALLEY...IDYLLWILD...MOUNTAIN CENTER...PINE COVE... PINYON PINES...VISTA GRANDE...BOULEVARD...CAMERON...CAMPO... CUYAMACA...DESCANSO...JULIAN...LAKE HENSHAW...MORENA VILLAGE... MOUNT LAGUNA...OAK GROVE...PINE HILLS...PINE VALLEY...RANCHITA... SANTA YSABEL...WARNER SPRINGS 209 PM PST WED JAN 9 2013 ...WINTER STORM WARNING IN EFFECT FROM 6 AM TO 10 PM PST THURSDAY... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A WINTER STORM WARNING FOR A COMBINATION OF STRONG GUSTY WIND...SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 6 AM TO 10 PM PST THURSDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * ELEVATION... ABOVE 3500 FEET. * SNOW LEVELS...LOWERING TO 4000 FEET THURSDAY MORNING...3000 TO 3500 FEET THURSDAY AFTERNOON...AND 2500 FEET THURSDAY NIGHT. * SNOW ACCUMULATIONS...2 TO 4 INCHES ABOVE 4000 FEET WITH LOCALLY GREATER AMOUNTS ON THE HIGHER PEAKS. * TIMING...RAIN AND SNOW WILL DEVELOP THURSDAY MORNING WITH SNOW SHOWERS CONTINUING THROUGH THE AFTERNOON AND DECREASING THURSDAY NIGHT. * LOCATIONS INCLUDE: CUYAMACA...DESCANSO...JULIAN...MOUNT LAGUNA...PINE VALLEY...RANCHITA...SANTA YSABEL...WARNER SPRINGS...AGUANGA...ANZA...GARNER VALLEY...IDYLLWILD...MOUNTAIN CENTER...PINE COVE...PINYON PINES * WINDS...SOUTHWEST TO WEST 20 TO 30 MPH WITH GUSTS TO 50 MPH. LOCAL GUSTS TO 65 MPH...MAINLY NEAR THE RIDGE TOPS AND ALONG DESERT MOUNTAIN SLOPES. * VISIBILITY...LOCALLY REDUCED TO NEAR ZERO AT TIMES IN SNOW... BLOWING SNOW...AND FOG. * IMPACTS...SNOW...BLOWING SNOW...AND DENSE FOG WILL CAUSE LOCAL VISIBILITY NEAR ZERO AT TIMES. TRAVELERS THROUGH THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS WINTER WEATHER CONDITIONS. MOTORISTS ARE URGED TO CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. INTERSTATE 8 COULD HAVE SNOW COVERING THE ROADWAY BY THURSDAY AFTERNOON. ALWAYS CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING IF YOU MUST TRAVEL INTO THE MOUNTAINS. THIS WEATHER COULD BE DEADLY FOR UNPREPARED CAMPERS OR HIKERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ055-100615- /O.UPG.KSGX.WW.Y.0001.130110T1400Z-130111T0600Z/ /O.NEW.KSGX.WS.W.0001.130110T1400Z-130111T0600Z/ SAN BERNARDINO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...ANGELUS OAKS...BALDWIN LAKE... BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...CRESTLINE... FAWNSKIN...FOREST FALLS...I-15 AT CAJON SUMMIT... I-15 AT 3500 FEET...LAKE ARROWHEAD...MOUNT BALDY... MOUNTAIN HOME VILLAGE...OAK GLEN...PHELAN...RUNNING SPRINGS... TWIN PEAKS...WRIGHTWOOD 209 PM PST WED JAN 9 2013 ...WINTER STORM WARNING IN EFFECT FROM 6 AM TO 10 PM PST THURSDAY... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A WINTER STORM WARNING FOR A COMBINATION OF STRONG GUSTY WIND...SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 6 AM TO 10 PM PST THURSDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. * ELEVATION...ABOVE 3500 FEET. * SNOW LEVELS...LOWERING TO 3500 FEET THURSDAY MORNING...3000 FEET THURSDAY AFTERNOON...AND 2500 FEET THURSDAY NIGHT. * SNOW ACCUMULATIONS...2 TO 4 INCHES ABOVE 4000 FEET WITH LOCAL AMOUNTS TO AROUND 6 INCHES ABOVE 5000 FEET. * TIMING...SNOW LEVELS LOWERING RAPIDLY THURSDAY MORNING WITH RAIN AND SNOW...THEN SNOW SHOWERS THROUGH THE AFTERNOON. SNOW SHOWERS MAY CONTINUE INTO THE EVENING. * LOCATIONS INCLUDE: ANGELUS OAKS...BALDWIN LAKE...BIG BEAR CITY...BIG BEAR LAKE...CRESTLINE...FAWNSKIN...FOREST FALLS...I-15 AT CAJON SUMMIT...LAKE ARROWHEAD...MOUNT BALDY...OAK GLEN...PHELAN...RUNNING SPRINGS...TWIN PEAKS...WRIGHTWOOD * WINDS...SOUTHWEST TO WEST 20 TO 30 MPH WITH GUSTS TO 50 MPH. LOCAL GUSTS TO 65 MPH...MAINLY NEAR THE RIDGE TOPS AND ALONG THE DESERT SLOPES OF THE SAN BERNARDINO MOUNTAINS. * VISIBILITY...LOCALLY REDUCED TO NEAR ZERO AT TIMES IN SNOW... BLOWING SNOW...AND FOG. * IMPACTS...SNOW...BLOWING SNOW...AND DENSE FOG WILL CAUSE LOCAL VISIBILITY NEAR ZERO AT TIMES. TRAVELERS THROUGH THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS WINTER WEATHER CONDITIONS. MOTORISTS ARE URGED TO CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. INTERSTATE 15 THROUGH CAJON PASS COULD HAVE SNOW COVER ON THE ROADWAY BY LATE THURSDAY MORNING. ALWAYS CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING IF YOU MUST TRAVEL INTO THE MOUNTAINS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ060-100615- /O.EXT.KSGX.WW.Y.0001.130110T1600Z-130111T0200Z/ APPLE AND LUCERNE VALLEYS- INCLUDING THE FOLLOWING LOCATIONS...APPLE VALLEY...HESPERIA... LUCERNE VALLEY 209 PM PST WED JAN 9 2013 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 8 AM TO 6 PM PST THURSDAY... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT FROM 8 AM TO 6 PM PST THURSDAY. * ELEVATION...ABOVE 3000 FEET. * SNOW LEVELS...LOWERING TO 3500 FEET THURSDAY MORNING...3000 FEET THURSDAY AFTERNOON...AND 2500 FEET THURSDAY NIGHT. * SNOW ACCUMULATIONS...LOCALLY 1 TO 2 INCHES...MAINLY NEAR THE FOOTHILLS OF THE SAN BERNARDINO AND SAN GABRIEL MOUNTAINS AND OTHER HIGHER TERRAIN. * TIMING...SNOW LEVELS LOWERING THURSDAY MORNING WITH SCATTERED SNOW SHOWERS CONTINUING INTO THE AFTERNOON. SNOW SHOWERS MAY CONTINUE NEAR THE FOOTHILLS OF THE SAN BERNARDINO AND SAN GABRIEL MOUNTAINS INTO THURSDAY EVENING. * LOCATIONS INCLUDE: APPLE VALLEY...HESPERIA...LUCERNE VALLEY * WINDS...SOUTHWEST TO WEST 20 TO 30 MPH WITH GUSTS TO 45 MPH. LOCAL GUSTS TO 60 MPH NEAR THE FOOTHILLS OF THE SAN BERNARDINO MOUNTAINS. * VISIBILITY...LOCALLY REDUCED IN SNOW AND BLOWING SNOW. * IMPACTS...A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. INTERSTATE 15 NEAR CAJON PASS COULD HAVE SNOW COVER ON THE ROADWAY BY LATE THURSDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MAXWELL
5 follow-up statements
320 WWUS46 KSGX 100516 WSWSGX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 916 PM PST WED JAN 9 2013 ...WINTER STORM WARNING FOR THE MOUNTAINS ABOVE 3000 FEET WITH A WINTER WEATHER ADVISORY FOR PORTIONS OF THE UPPER DESERTS FOR THURSDAY THROUGH THURSDAY EVENING DUE TO WIND AND SNOW... .A COLD UPPER LEVEL LOW AND A STRONG SURFACE COLD FRONT WILL BRING STRONG WINDS AND SNOW SHOWERS THURSDAY AS IT MOVES QUICKLY ACROSS THE REGION. SNOW LEVELS WILL LOWER RAPIDLY TO AROUND 3000 FEET DURING THE DAY...AND CONTINUE LOWERING THURSDAY NIGHT. WINDS WILL GUST OVER 60 MPH OVER PARTS OF THE MOUNTAINS. SNOW SQUALLS MAY BRIEFLY REDUCE VISIBILITIES TO NEAR ZERO AT TIMES. CAZ055-056-058-101415- /O.CON.KSGX.WS.W.0001.130110T1400Z-130111T0600Z/ SAN BERNARDINO COUNTY MOUNTAINS-RIVERSIDE COUNTY MOUNTAINS- SAN DIEGO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...ANGELUS OAKS...BALDWIN LAKE... BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...CRESTLINE... FAWNSKIN...FOREST FALLS...I-15 AT CAJON SUMMIT... I-15 AT 3500 FEET...LAKE ARROWHEAD...MOUNT BALDY... MOUNTAIN HOME VILLAGE...OAK GLEN...PHELAN...RUNNING SPRINGS... TWIN PEAKS...WRIGHTWOOD...AGUANGA...ANZA...GARNER VALLEY... IDYLLWILD...MOUNTAIN CENTER...PINE COVE...PINYON PINES... VISTA GRANDE...BOULEVARD...CAMERON...CAMPO...CUYAMACA... DESCANSO...JULIAN...LAKE HENSHAW...MORENA VILLAGE... MOUNT LAGUNA...OAK GROVE...PINE HILLS...PINE VALLEY...RANCHITA... SANTA YSABEL...WARNER SPRINGS 916 PM PST WED JAN 9 2013 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM TO 10 PM PST THURSDAY... * ELEVATION... ABOVE 3500 FEET. * SNOW LEVELS...LOWERING TO 4000 FEET THURSDAY MORNING...TO 3000 FEET THURSDAY AFTERNOON...AND TO 2000 FEET THURSDAY NIGHT. * SNOW ACCUMULATIONS...2 TO 4 INCHES ABOVE 4000 FEET WITH LOCALLY GREATER AMOUNTS ON THE HIGHER PEAKS. * TIMING...RAIN AND SNOW WILL DEVELOP THURSDAY MORNING WITH SNOW SHOWERS CONTINUING THROUGH THE AFTERNOON AND DECREASING THURSDAY NIGHT. * LOCATIONS INCLUDE: CUYAMACA...DESCANSO...JULIAN...MOUNT LAGUNA...PINE VALLEY...RANCHITA...SANTA YSABEL...WARNER SPRINGS...AGUANGA...ANZA...GARNER VALLEY...IDYLLWILD...MOUNTAIN CENTER...PINE COVE...PINYON PINES * WINDS...SOUTHWEST TO WEST 20 TO 30 MPH WITH GUSTS TO 50 MPH. LOCAL GUSTS TO 65 MPH...MAINLY NEAR THE RIDGE TOPS AND ALONG DESERT MOUNTAIN SLOPES. * VISIBILITY...LOCALLY REDUCED TO NEAR ZERO AT TIMES IN SNOW... BLOWING SNOW...AND FOG. * IMPACTS...SNOW...BLOWING SNOW...AND DENSE FOG WILL CAUSE LOCAL VISIBILITY NEAR ZERO AT TIMES. TRAVELERS THROUGH THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS WINTER WEATHER CONDITIONS. MOTORISTS ARE URGED TO CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. INTERSTATE 8 COULD HAVE SNOW COVERING THE ROADWAY BY THURSDAY AFTERNOON. ALWAYS CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING IF YOU MUST TRAVEL INTO THE MOUNTAINS. THIS WEATHER COULD BE DEADLY FOR UNPREPARED CAMPERS OR HIKERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ060-101415- /O.CON.KSGX.WW.Y.0001.130110T1600Z-130111T0200Z/ APPLE AND LUCERNE VALLEYS- INCLUDING THE FOLLOWING LOCATIONS...APPLE VALLEY...HESPERIA... LUCERNE VALLEY 916 PM PST WED JAN 9 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 AM TO 6 PM PST THURSDAY... * ELEVATION...ABOVE 3000 FEET. * SNOW LEVELS...LOWERING TO 3500 FEET THURSDAY MORNING...2500 FEET THURSDAY AFTERNOON...AND 2000 FEET THURSDAY NIGHT. * SNOW ACCUMULATIONS...LOCALLY 1 TO 2 INCHES...MAINLY NEAR THE FOOTHILLS OF THE SAN BERNARDINO AND SAN GABRIEL MOUNTAINS AND OTHER HIGHER TERRAIN. * TIMING...SNOW LEVELS RAPIDLY LOWERING THURSDAY MORNING WITH SCATTERED SNOW SHOWERS CONTINUING INTO THE AFTERNOON. SNOW SHOWERS MAY CONTINUE NEAR THE FOOTHILLS OF THE SAN BERNARDINO AND SAN GABRIEL MOUNTAINS INTO THURSDAY EVENING. * LOCATIONS INCLUDE: APPLE VALLEY...HESPERIA...LUCERNE VALLEY * WINDS...WEST TO WEST 20 TO 30 MPH WITH GUSTS TO 45 MPH. LOCAL GUSTS TO 60 MPH NEAR THE FOOTHILLS OF THE SAN BERNARDINO MOUNTAINS. * VISIBILITY...LOCALLY REDUCED IN SNOW AND BLOWING SNOW. * IMPACTS...A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS...STRONG WINDS AND LOCALLY REDUCED VISIBILITIES. INTERSTATE 15 NEAR CAJON PASS COULD HAVE SNOW ON THE ROADWAY THURSDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MOEDE
120 WWUS46 KSGX 101328 WSWSGX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 528 AM PST THU JAN 10 2013 ...WINTER STORM WARNING FOR THE MOUNTAINS ABOVE 3000 FEET WITH A WINTER WEATHER ADVISORY FOR PORTIONS OF THE UPPER DESERTS TODAY... .A COLD UPPER-LEVEL LOW PRESSURE AREA AND ASSOCIATED COLD FRONT WILL BRING STRONG WINDS AND SNOW SHOWERS TODAY AS IT MOVES QUICKLY ACROSS THE REGION. SNOW LEVELS WILL LOWER RAPIDLY TO AROUND 3000 FEET DURING THE DAY...AND CONTINUE LOWERING THURSDAY NIGHT. WINDS WILL GUST OVER 60 MPH OVER PARTS OF THE MOUNTAINS. SNOW SQUALLS MAY BRIEFLY REDUCE VISIBILITY TO NEAR ZERO AT TIMES. CAZ055-056-058-102130- /O.CON.KSGX.WS.W.0001.130110T1400Z-130111T0600Z/ SAN BERNARDINO COUNTY MOUNTAINS-RIVERSIDE COUNTY MOUNTAINS- SAN DIEGO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...ANGELUS OAKS...BALDWIN LAKE... BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...CRESTLINE... FAWNSKIN...FOREST FALLS...I-15 AT CAJON SUMMIT... I-15 AT 3500 FEET...LAKE ARROWHEAD...MOUNT BALDY... MOUNTAIN HOME VILLAGE...OAK GLEN...PHELAN...RUNNING SPRINGS... TWIN PEAKS...WRIGHTWOOD...AGUANGA...ANZA...GARNER VALLEY... IDYLLWILD...MOUNTAIN CENTER...PINE COVE...PINYON PINES... VISTA GRANDE...BOULEVARD...CAMERON...CAMPO...CUYAMACA... DESCANSO...JULIAN...LAKE HENSHAW...MORENA VILLAGE... MOUNT LAGUNA...OAK GROVE...PINE HILLS...PINE VALLEY...RANCHITA... SANTA YSABEL...WARNER SPRINGS 528 AM PST THU JAN 10 2013 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * ELEVATION... ABOVE 3500 FEET. * SNOW LEVEL...LOWERING TO 4000 FEET LATER THIS MORNING...TO 3000 FEET THIS AFTERNOON...AND TO 2000 FEET OVERNIGHT. * SNOW ACCUMULATIONS...2 TO 4 INCHES ABOVE 4000 FEET WITH LOCALLY GREATER AMOUNTS ON THE HIGHER PEAKS. * TIMING...RAIN AND SNOW INCREASING EARLY THIS MORNING...WITH SNOW SHOWERS CONTINUING THROUGH THE AFTERNOON AND DECREASING OVERNIGHT. * LOCATIONS INCLUDE: CUYAMACA...DESCANSO...JULIAN...MOUNT LAGUNA...PINE VALLEY...RANCHITA...SANTA YSABEL...WARNER SPRINGS...AGUANGA... ANZA...GARNER VALLEY...IDYLLWILD... MOUNTAIN CENTER...PINE COVE...PINYON PINES * WINDS...SOUTHWEST TO WEST 20 TO 30 MPH WITH GUSTS TO 50 MPH. LOCAL GUSTS TO 65 MPH...MAINLY NEAR THE RIDGE TOPS AND ALONG DESERT MOUNTAIN SLOPES. * VISIBILITY...LOCALLY REDUCED TO NEAR ZERO AT TIMES IN SNOW... BLOWING SNOW...AND FOG. * IMPACTS...SNOW...BLOWING SNOW...AND DENSE FOG WILL CAUSE LOCAL VISIBILITY NEAR ZERO AT TIMES. INTERSTATE 8 COULD HAVE SOME SNOW COVERING THE ROADWAY BY THIS AFTERNOON. THIS WEATHER COULD BE DEADLY FOR UNPREPARED CAMPERS OR HIKERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. TRAVELERS THROUGH THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS WINTER WEATHER CONDITIONS. ALWAYS CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING IF YOU MUST TRAVEL INTO THE MOUNTAINS. MOTORISTS ARE URGED TO CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD... AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ060-102130- /O.CON.KSGX.WW.Y.0001.130110T1600Z-130111T0200Z/ APPLE AND LUCERNE VALLEYS- INCLUDING THE FOLLOWING LOCATIONS...APPLE VALLEY...HESPERIA... LUCERNE VALLEY 528 AM PST THU JAN 10 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... * ELEVATION...ABOVE 3000 FEET. * SNOW LEVELS...LOWERING TO 3500 FEET THURSDAY MORNING...2500 FEET THURSDAY AFTERNOON...AND 2000 FEET THURSDAY NIGHT. * SNOW ACCUMULATIONS...LOCALLY 1 TO 2 INCHES...MAINLY NEAR THE FOOTHILLS OF THE SAN BERNARDINO AND SAN GABRIEL MOUNTAINS AND OTHER HIGHER TERRAIN. * TIMING...SNOW LEVELS RAPIDLY LOWERING THIS MORNING WITH SCATTERED SNOW SHOWERS CONTINUING INTO THE AFTERNOON. SNOW SHOWERS MAY CONTINUE NEAR THE FOOTHILLS OF THE SAN BERNARDINO AND SAN GABRIEL MOUNTAINS INTO THURSDAY EVENING. * LOCATIONS INCLUDE: APPLE VALLEY...HESPERIA...LUCERNE VALLEY * WINDS...WEST TO WEST 20 TO 30 MPH WITH GUSTS TO 45 MPH. LOCAL GUSTS TO 60 MPH NEAR THE FOOTHILLS OF THE SAN BERNARDINO MOUNTAINS. * VISIBILITY...LOCALLY REDUCED IN SNOW AND BLOWING SNOW. * IMPACTS...A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS...STRONG WINDS AND LOCALLY REDUCED VISIBILITY. SNOW FALL MAY AFFECT TRAVEL ON INTERSTATE 15 THROUGH THE CAJON PASS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITY...AND USE CAUTION WHILE DRIVING. && $$ JAD
639 WWUS46 KSGX 101847 WSWSGX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 1047 AM PST THU JAN 10 2013 ...WINTER STORM WARNING FOR THE MOUNTAINS ABOVE 3000 FEET WITH A WINTER WEATHER ADVISORY FOR PORTIONS OF THE UPPER DESERTS TODAY... .A COLD UPPER-LEVEL LOW PRESSURE AREA AND ASSOCIATED COLD FRONT WILL BRING STRONG WINDS...SNOW SHOWERS AND BLOWING SNOW TODAY AS IT MOVES QUICKLY ACROSS THE REGION. SNOW LEVELS WILL CONTINUE TO LOWER...WITH SNOW LEVELS MOSTLY AROUND 3000 FEET THIS AFTERNOON...WITH EVEN LOWER SNOW LEVELS THIS EVENING. WINDS WILL GUST OVER 60 MPH OVER PARTS OF THE MOUNTAINS. SNOW SQUALLS MAY BRIEFLY REDUCE VISIBILITY TO NEAR ZERO AT TIMES. CAZ055-056-058-110300- /O.CON.KSGX.WS.W.0001.000000T0000Z-130111T0600Z/ SAN BERNARDINO COUNTY MOUNTAINS-RIVERSIDE COUNTY MOUNTAINS- SAN DIEGO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...ANGELUS OAKS...BALDWIN LAKE... BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...CRESTLINE... FAWNSKIN...FOREST FALLS...I-15 AT CAJON SUMMIT... I-15 AT 3500 FEET...LAKE ARROWHEAD...MOUNT BALDY... MOUNTAIN HOME VILLAGE...OAK GLEN...PHELAN...RUNNING SPRINGS... TWIN PEAKS...WRIGHTWOOD...AGUANGA...ANZA...GARNER VALLEY... IDYLLWILD...MOUNTAIN CENTER...PINE COVE...PINYON PINES... VISTA GRANDE...BOULEVARD...CAMERON...CAMPO...CUYAMACA... DESCANSO...JULIAN...LAKE HENSHAW...MORENA VILLAGE... MOUNT LAGUNA...OAK GROVE...PINE HILLS...PINE VALLEY...RANCHITA... SANTA YSABEL...WARNER SPRINGS 1047 AM PST THU JAN 10 2013 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * ELEVATION... ABOVE 3500 FEET. * SNOW LEVEL...3000 FEET THIS AFTERNOON...AND AS LOW AS 2000 FEET OVERNIGHT. * SNOW ACCUMULATIONS...2 TO 4 INCHES ABOVE 4000 FEET WITH LOCALLY GREATER AMOUNTS ON THE HIGHER PEAKS. * TIMING...SNOW SHOWERS CONTINUING THROUGH THE AFTERNOON AND DECREASING THIS EVENING. ISOLATED SNOW SHOWERS COULD LINGER UNTIL MIDNIGHT IN SAN DIEGO COUNTY. * LOCATIONS INCLUDE: CUYAMACA...DESCANSO...JULIAN...MOUNT LAGUNA...PINE VALLEY...RANCHITA...SANTA YSABEL...WARNER SPRINGS...AGUANGA...ANZA...GARNER VALLEY...IDYLLWILD... MOUNTAIN CENTER...PINE COVE...PINYON PINES...BIG BEAR LAKE...RUNNING SPRINGS...FOREST FALLS...LAKE ARROWHEAD...WRIGHTWOOD. * WINDS...SOUTHWEST TO WEST 20 TO 30 MPH WITH GUSTS TO 50 MPH. LOCAL GUSTS TO 65 MPH...MAINLY NEAR THE RIDGE TOPS AND ALONG DESERT MOUNTAIN SLOPES. * VISIBILITY...LOCALLY REDUCED TO NEAR ZERO AT TIMES IN SNOW... BLOWING SNOW...AND FOG. * IMPACTS...SNOW...BLOWING SNOW...AND DENSE FOG WILL CAUSE LOCAL VISIBILITY NEAR ZERO AT TIMES. INTERSTATE 8 BETWEEN ALPINE AND JACUMBA AND INTERSTATE 15 THROUGH CAJON PASS COULD HAVE SNOW COVERING THE ROADWAY. THIS WEATHER COULD BE DEADLY FOR UNPREPARED CAMPERS OR HIKERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. TRAVELERS THROUGH THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS WINTER WEATHER CONDITIONS. ALWAYS CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING IF YOU MUST TRAVEL INTO THE MOUNTAINS. MOTORISTS ARE URGED TO CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD... AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ060-110200- /O.CON.KSGX.WW.Y.0001.000000T0000Z-130111T0200Z/ APPLE AND LUCERNE VALLEYS- INCLUDING THE FOLLOWING LOCATIONS...APPLE VALLEY...HESPERIA... LUCERNE VALLEY 1047 AM PST THU JAN 10 2013 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... * ELEVATION...ABOVE 3000 FEET. * SNOW LEVELS...2500 FEET THIS AFTERNOON. * SNOW ACCUMULATIONS...LOCALLY 1 TO 2 INCHES...MAINLY NEAR THE FOOTHILLS OF THE SAN BERNARDINO AND SAN GABRIEL MOUNTAINS AND OTHER HIGHER TERRAIN. * TIMING...SCATTERED SNOW SHOWERS CONTINUING THROUGH THIS AFTERNOON. * LOCATIONS INCLUDE: APPLE VALLEY...HESPERIA...LUCERNE VALLEY * WINDS...WEST TO WEST 20 TO 30 MPH WITH GUSTS TO 45 MPH. LOCAL GUSTS TO 60 MPH NEAR THE FOOTHILLS OF THE SAN BERNARDINO MOUNTAINS. * VISIBILITY...LOCALLY REDUCED IN SNOW AND BLOWING SNOW. * IMPACTS...A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS...STRONG WINDS AND LOCALLY REDUCED VISIBILITY. SNOW FALL MAY AFFECT TRAVEL ON INTERSTATE 15 THROUGH THE CAJON PASS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITY...AND USE CAUTION WHILE DRIVING. && $$ MAXWELL
157 WWUS46 KSGX 110210 WSWSGX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 610 PM PST THU JAN 10 2013 ...WINTER STORM WARNING CONTINUES FOR THE MOUNTAINS UNTIL 10 PM... ...WINTER WEATHER ADVISORY THE UPPER DESERTS EXPIRED AT 6 PM... .STRONG GUSTY WINDS...SNOW SHOWERS...BLOWING SNOW AND LOW WIND CHILLS THIS EVENING. SNOW LEVELS WILL BE FROM 2000 TO 3000 FEET. MOST OF THE SNOW TONIGHT WILL FALL ACROSS SAN DIEGO COUNTY WHERE SNOW SQUALLS MAY BRIEFLY REDUCE VISIBILITIES TO ZERO AT TIMES. CAZ060-110315- /O.EXP.KSGX.WW.Y.0001.000000T0000Z-130111T0200Z/ APPLE AND LUCERNE VALLEYS- INCLUDING THE FOLLOWING LOCATIONS...APPLE VALLEY...HESPERIA... LUCERNE VALLEY 610 PM PST THU JAN 10 2013 ...WINTER WEATHER ADVISORY HAS EXPIRED... THE SNOW SHOWERS HAVE ENDED. HOWEVER...STRONG GUSTY WINDS AND LOW WIND CHILLS WILL CONTINUE THROUGH THE EVENING. $$ CAZ055-056-058-110600- /O.CON.KSGX.WS.W.0001.000000T0000Z-130111T0600Z/ SAN BERNARDINO COUNTY MOUNTAINS-RIVERSIDE COUNTY MOUNTAINS- SAN DIEGO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...ANGELUS OAKS...BALDWIN LAKE... BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...CRESTLINE... FAWNSKIN...FOREST FALLS...I-15 AT CAJON SUMMIT... I-15 AT 3500 FEET...LAKE ARROWHEAD...MOUNT BALDY... MOUNTAIN HOME VILLAGE...OAK GLEN...PHELAN...RUNNING SPRINGS... TWIN PEAKS...WRIGHTWOOD...AGUANGA...ANZA...GARNER VALLEY... IDYLLWILD...MOUNTAIN CENTER...PINE COVE...PINYON PINES... VISTA GRANDE...BOULEVARD...CAMERON...CAMPO...CUYAMACA... DESCANSO...JULIAN...LAKE HENSHAW...MORENA VILLAGE... MOUNT LAGUNA...OAK GROVE...PINE HILLS...PINE VALLEY...RANCHITA... SANTA YSABEL...WARNER SPRINGS 610 PM PST THU JAN 10 2013 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * ELEVATION... ABOVE 3500 FEET. * SNOW LEVEL...2000 TO 3000 FEET TONIGHT. * SNOW ACCUMULATIONS...2 TO 4 INCHES ABOVE 4000 FEET WITH LOCALLY GREATER AMOUNTS ON THE HIGHER PEAKS OF SAN DIEGO COUNTY. * TIMING...ISOLATED SNOW SHOWERS IN SAN BERNARDINO AND RIVERSIDE COUNTY. MORE WIDESPREAD SNOW SHOWERS AND SNOW SQUALLS CONTINUING OVER THE SAN DIEGO COUNTY MOUNTAINS. * LOCATIONS INCLUDE: CUYAMACA...DESCANSO...JULIAN...MOUNT LAGUNA...PINE VALLEY...RANCHITA...SANTA YSABEL...WARNER SPRINGS. * WINDS...SOUTHWEST TO WEST 20 TO 30 MPH WITH GUSTS TO 50 MPH. LOCAL GUSTS TO 65 MPH...MAINLY NEAR THE RIDGE TOPS AND ALONG DESERT MOUNTAIN SLOPES. * VISIBILITY...LOCALLY REDUCED TO NEAR ZERO AT TIMES IN SNOW... BLOWING SNOW...AND FOG IN SAN DIEGO COUNTY. * IMPACTS...SNOW...BLOWING SNOW AND FOG MAY REDUCE VISIBILITIES TO NEAR ZERO AT TIMES IN THE SAN DIEGO COUNTY MOUNTAINS...INCLUDING INTERSTATE 8 BETWEEN ALPINE AND JACUMBA. ALL MOUNTAIN ROADS WILL REMAIN SNOW AND ICE COVERED TONIGHT AS TEMPERATURES REMAIN WELL BELOW FREEZING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. TRAVELERS THROUGH THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS WINTER WEATHER CONDITIONS. ALWAYS CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING IF YOU MUST TRAVEL INTO THE MOUNTAINS. MOTORISTS ARE URGED TO CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD... AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ MOEDE
895 WWUS46 KSGX 110609 WSWSGX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 1009 PM PST THU JAN 10 2013 ...WINTER STORM WARNING FOR THE MOUNTAINS HAS EXPIRED... .LIGHT SNOW SHOWERS WILL CONTINUE AT TIMES THROUGH MIDNIGHT...BUT ONLY SMALL ACCUMULATIONS ARE EXPECTED. CAZ055-056-058-110715- /O.EXP.KSGX.WS.W.0001.000000T0000Z-130111T0600Z/ SAN BERNARDINO COUNTY MOUNTAINS-RIVERSIDE COUNTY MOUNTAINS- SAN DIEGO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...ANGELUS OAKS...BALDWIN LAKE... BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...CRESTLINE... FAWNSKIN...FOREST FALLS...I-15 AT CAJON SUMMIT... I-15 AT 3500 FEET...LAKE ARROWHEAD...MOUNT BALDY... MOUNTAIN HOME VILLAGE...OAK GLEN...PHELAN...RUNNING SPRINGS... TWIN PEAKS...WRIGHTWOOD...AGUANGA...ANZA...GARNER VALLEY... IDYLLWILD...MOUNTAIN CENTER...PINE COVE...PINYON PINES... VISTA GRANDE...BOULEVARD...CAMERON...CAMPO...CUYAMACA... DESCANSO...JULIAN...LAKE HENSHAW...MORENA VILLAGE... MOUNT LAGUNA...OAK GROVE...PINE HILLS...PINE VALLEY...RANCHITA... SANTA YSABEL...WARNER SPRINGS 1009 PM PST THU JAN 10 2013 ...WINTER STORM WARNING HAS EXPIRED... SNOW SHOWERS WILL CONTINUE TO DECREASE IN COVERAGE THROUGH MIDNIGHT WITH LITTLE ADDITIONAL ACCUMULATION. $$ MOEDE
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Diego, CA wrote its last area forecast discussion before this winter storm warning went out at Jan 9, 9:30 AM PST, 4 hours 39 minutes earlier.
Area forecast discussion, Jan 9, 9:30 AM PST, 4 hours 39 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN DIEGO CA 930 AM PST WED JAN 9 2013 .SYNOPSIS... TODAY WILL BE THE LAST MILD DAY UNTIL AT LEAST THE MIDDLE OF NEXT WEEK. A STRONG TROUGH OF LOW PRESSURE WILL BRING MUCH COLDER AIR TO SOUTHERN CALIFORNIA STARTING THURSDAY...ALONG WITH SHOWERS...WITH SOME SNOW IN THE MOUNTAINS...AND STRONG GUSTY WINDS. MOST OF THE PRECIPITATION WILL END EARLY THURSDAY NIGHT...WITH MOSTLY CLEAR COLD WEATHER FRIDAY AND SATURDAY WITH LOCALLY GUSTY WINDS BUT FREEZING TEMPERATURES AT NIGHT IN WIND SHELTERED VALLEY...DESERT AND EVEN SOME COASTAL AREAS. A COUPLE OF DISTURBANCES FROM THE NORTH COULD BRING SOME RAIN SUNDAY OR MONDAY WITH SNOW POSSIBLE IN THE MOUNTAINS...WITH WINDY CONDITIONS EXPECTED EARLY NEXT WEEK. WARMER WEATHER COULD RETURN BY THE MIDDLE OF NEXT WEEK. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... HIGH CLOUDS WERE DRIFTING OVER TODAY WITH AREAS OF STRATUS OVER THE COASTAL WATERS. ENJOY TODAY...IT WILL BE THE LAST WARM DAY FOR AWHILE...WITH THE 850 MB TEMPS AROUND 13 DEG C AND WEAK SURFACE PRESSURE GRADIENTS...MANY VALLEY AND ALL LOW DESERT LOCATIONS SHOULD STILL TOP 70...WITH NEAR 80 POSSIBLE IN A FEW DESERT LOCATIONS. MAIN TROUGH WAS ALIGNED A LITTLE WEST OF 130 W IN THE NORTH PACIFIC WITH THE RIDGE OVER THE WESTERN US MOVING EAST. THE TROUGH WILL CONTINUE TO MOVE E/SE AND MOVE FAIRLY QUICKLY THROUGH SO-CAL. AMSU TPW IMAGES SHOWED LESS THAN AN INCH OF PRECIP WATER WITH THE TROUGH THIS MORNING...AND MODELS ARE NOT SHOWING TOO MUCH MOISTURE WHEN THE TROUGH AND ASSOCIATED COLD FRONT PASS THROUGH...WITH THE NEAR-SATURATION MOSTLY AT/BELOW 850 MB IN SAN DIEGO COUNTY AND 750 MB FURTHER NORTH. PRECIP COULD BEGIN A LITTLE BEFORE SUNRISE THU...BUT MOST PRECIP SHOULD OCCUR AFTER. SOME LOW-LEVEL SW FLOW DURING THE ONSET OF THE SYSTEM COULD BRING OROGRAPHIC PRECIP OF UP TO 1/2 INCH ON THE SOUTH SLOPES OF THE SAN BERNARDINO COUNTY MTNS THU...WITH SOME OF THAT PRECIP OCCURRING BEFORE THE COLDEST AIR ARRIVES AROUND MID-MORNING. MOST OTHER AREAS SHOULD RECEIVE LESS THAN 1/4 INCH OF PRECIP. SNOW LEVELS SHOULD FALL TO 3000-4000 FEET BY THU AFTERNOON AS THE PROG FOR 00Z HAS -2 DEG C 850 MB TEMPS...BUT BY LATE AFTERNOON...THE ONLY AREAS WITH ENOUGH MOISTURE IN THE 850-700 MB LAYER FOR CONTINUED PRECIP IS SAN DIEGO COUNTY. GENERAL SNOWFALL AMOUNTS SHOULD BE 2-3 INCHES WITH LOCAL AMOUNTS TO 5-6 INCHES ON THE UPPER SOUTH SLOPES OF SAN BERNARDINO COUNTY. WILL LOOK AT THE 2-KM 12Z CANSAC WRF TO HELP WITH SPECIFICS WHEN THAT MODEL OUTPUT ARRIVES. LOCAL WRF SHOWS MOUNTAIN WAVES DURING THE DAY...WITH STRONGEST WAVES EAST OF THE CRESTS AS POTENTIAL TEMP JUMPS ARE AROUND 10 DEG C WITH MODELED WINDS OVER 55 KNOTS JUST ABOVE THE SURFACE...SO WIND GUSTS IN FOCUSED AREAS COULD BE LOCALLY OVER 65 MPH. BY EVENING...THE MOUNTAIN WAVES WEAKEN BUT WIDESPREAD WINDY CONDITIONS WILL OCCUR DUE TO DEEP UNSTABLE LAYER IN THE DESERTS AND STRONG HEIGHT GRADIENTS...THOUGH GUST POTENTIAL WILL BE SOMEWHAT LESS. DEEP BROAD TROUGH WILL COVER THE WESTERN US FRI-MON WITH A STRONG RIDGE OVER THE EAST PACIFC...VERY HIGH-AMPLITUDE ON BOTH PARTS. OFFSHORE FLOW WILL PREVAIL AND BRING LOCALLY GUSTY WINDS...BUT IN AREAS THAT DO NOT RECEIVE MUCH WIND AT NIGHT...IT WILL BE QUITE COLD WITH WIDESPREAD FREEZING TEMPS IN THE VALLEYS...LOWER DESERTS AND SOME COASTAL VALLEY LOCATIONS MAINLY FRI/SAT NIGHT...ESPECIALLY SINCE SKIES SHOULD BE CLEAR THEN. FOR THU NIGHT...SOME W/NW WIND WILL REMAIN IN MOST VALLEYS...THOUGH COLDER VALLEY LOCATIONS WILL STILL PROBABLY FREEZE LATE. SUN/MON COULD BE INTERESTING. ENSEMBLE SOLUTIONS ARE STILL QUITE VARIABLE BUT POINT TO SOME KIND OF STRONG SHORTWAVE OR EVEN THE DEVELOPMENT OF A CLOSED LOW MOVING SOUTH THROUGH OR NEAR SO-CAL. THERE IS SOME MID-LEVEL MOISTURE BUT NOT MUCH LOW-LEVEL MOISTURE...YET. THERE COULD BE MOUNTAIN OR POSSIBLY HIGH DESERT SNOW...AND POSSIBLE RAIN SHOWERS IN COASTAL/VALLEY AREAS. STRONG WINDS WILL LIKELY FOLLOW THIS LOW SOMETIME IN THE MON/TUE PERIOD. 00Z ECM ACTUALLY SHOWED 2 LOWS MOVING SOUTH IN THIS PERIOD. HENCE...THE RISK OF PRECIP IS NOTABLE AND HAVE ADDED A SLIGHT CHANCE OF PRECIP SUN/MON. THE HIGH PRESSURE RIDGE OVER THE EAST-PAC WILL BUILD EAST INTO THE WEST COAST SOMETIME AROUND TUE/WED AND COULD BRING SUBSTANTIAL WARMING. && .AVIATION... 091700Z...THROUGH 10/0100 UTC...W OF MTNS AND BLO 1200 FT MSL...HZ LAYER WITH VSBY 5-6SM. IMMEDIATE COAST AND OVER WATERS...FEW-SCT LOW STRATUS WITH BASES 300-500 FT MSL AND TOPS 1200 FT MSL...ALL AREAS BKN-OVC CLDS AOA 20000 FT MSL. BTWN 10/0100-1000 UTC STRATUS LAYER INCRSG TO OVC...BASES 500-800 FT MSL TOPS LIFTING TO 3000 FT MSL AND PUSHING INLAND TO 25-35SM TO BASE OF MTNS. BTWN 10/1000-11/0000...COLD FRONT MOVG SE ACROSS SRN CALIFORNIA... AHEAD OF FNT..MERGG LYRS BETWEEN 1000-8000 FT MSL...MTNS BCMG OBSCD IN CLDS/PCP. VSBY 3-5SM IN RA/SN/BR. MIXED ICG. MULTIPLE FRZLVL...5000..8000...1000 FT MSL MOGR UDDFS WITH WINDS SW 25-70KT IN THE 3000-15000 FT MSL LAYER AND SFC WIND GUSTS 25-45KT. BEHIND FNT...BKN-SCT LYRS BTWN 2000-8000 FT MSL. MTNS OBSCD. MOGR UDDFS WITH WIND NW 25-50KT IN THE 2000-10000 FT MSL LAYER. SFC WIND GUSTS +25KT. && .MARINE... LATEST MODEL GUIDANCE INDICATES GALE FORCE WINDS ALSO POSSIBLE OVER INNER WATERS THURSDAY AFTERNOON/NIGHT SO MODIFIED THE SMALL CRAFT ADVISORY AND ADDED GALE WATCH FOR THIS PERIOD. REMAINING WARNINGS AND ADVISORIES UNCHANGED FOR NOW. SEE MARINE WEATHER MESSAGE AND COASTAL FLOOD ADVISORY PRODUCTS...LAXMWWSGX...LAXCFWSGX FOR FURTHER DETAILS. && .SGX WATCHES/WARNINGS/ADVISORIES... HIGH WIND WARNING FOR MTN/DESERT AREAS...MIDNIGHT TONIGHT TO 10 PM THU FOR SAN BERNARDINO OCUNTY AND 4 AM THU TO 3 AM FRI FOR RIVERSIDE/SAN DIEGO COUNTIES...SEE LAXNPWSGX. WINTER WEATHER ADVISORY THU/THU EVENING ABOVE 3500 FT IN SAN BERNARDINO/RIVERSIDE AND SAN DIEGO COUNTY MTNS AND APPLE/LUCERNE VALLEYS...SEE LAXWSWSGX. HIGH SURF ADVISORY 5 AM THU TO 11 AM SAT FOR SAN DIEGO/ORANGE COUNTY BEACHES...SEE LAXCFWSGX. GALE WARNING 7 AM THU TO 1 AM FRI FOR OUTER COASTAL WATERS...SEE LAXMWWSGX. GALE WATCH THU AFTERNOON/NIGHT FOR INNER COASTAL WATERS...SEE LAXMWWSGX. SMALL CRAFT ADVISORY 10 AM TO 2 PM THU FOR INNER COASTAL WATERS...SEE LAXMWWSGX. && PUBLIC...MAXWELL AVIATION/MARINE...BALFOUR
Hazardous weather outlook, Jan 9, 4:45 AM PST, 9 hours 24 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN DIEGO CA 445 AM PST WED JAN 9 2013 CAZ042-043-048-050-055>058-060>062-PZZ750-775-101430- ORANGE COUNTY COASTAL AREAS-SAN DIEGO COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SAN DIEGO COUNTY VALLEYS-SAN BERNARDINO COUNTY MOUNTAINS- RIVERSIDE COUNTY MOUNTAINS-SANTA ANA MOUNTAINS AND FOOTHILLS- SAN DIEGO COUNTY MOUNTAINS-APPLE AND LUCERNE VALLEYS- COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS- COASTAL WATERS FROM SAN MATEO POINT TO THE MEXICAN BORDER AND OUT 30 NM- WATERS FROM SAN MATEO POINT TO THE MEXICAN BORDER EXTENDING 30 TO 60 NM OUT INCLUDING SAN CLEMENTE ISLAND- 445 AM PST WED JAN 9 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ALL OF EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE...TODAY AND TONIGHT. STRONG GUSTY SOUTH TO SOUTHWEST WINDS ARE EXPECTED TO DEVELOP TONIGHT IN MOUNTAINS AND DESERTS OF SAN BERNARDINO COUNTY. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. FOR THURSDAY THROUGH THURSDAY NIGHT...A COLD LOW PRESSURE SYSTEM FROM THE NORTHWEST IS EXPECTED TO BRING SHOWERS WITH LOW SNOW LEVELS DOWN TO AROUND 2500 FEET BY THURSDAY NIGHT...AND STRONG GUSTY WINDS. FOR FRIDAY THROUGH MONDAY...A COLD NORTH FLOW PATTERN WILL BRING LOCALLY STRONG GUSTY NORTH TO NORTHEAST WINDS. OVERNIGHT LOW TEMPERATURES IN THE 20S IN WIND SHELTERED PORTIONS OF THE LOWER DESERTS AND INLAND VALLEYS WITH LOWS IN THE 30S IN WIND SHELTERED COASTAL AND WESTERN VALLEY AREAS. FOR THE BEACHES FOR FRIDAY MORNING THROUGH SATURDAY MORNING...HIGH ASTRONOMICAL TIDES COMBINED WITH HIGH SURF WILL BRING THE POSSIBILITY OF COASTAL FLOODING AROUND THE TIMES OF HIGHEST TIDES EACH MORNING. .SPOTTER INFORMATION STATEMENT... SKYWARN WEATHER ACTIVATION IS NOT NEEDED FOR THESE AREAS...HOWEVER WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS...INCLUDING SNOWFALL AMOUNTS. 17
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 9, 1:51 AM PST | Coastal Flood Advisory | SGX | San Diego | 3 days |
| Jan 9, 1:51 AM PST | Gale Warning | SGX | 50 hr | |
| Jan 9, 1:51 AM PST | Small Craft Advisory | SGX | 33 hr | |
| Jan 9, 1:51 AM PST | High Surf Advisory | SGX | San Diego | 3 days |
| Jan 9, 2:57 AM PST | High Wind Warning | SGX | Riverside, San Bernardino, San Diego | 48 hr |
| Jan 9, 3:19 AM PST | Winter Weather Advisory | SGX | Riverside, San Bernardino, San Diego | 39 hr |
| Jan 9, 8:27 AM PST | Gale Watch | SGX | 5 hr | |
| Jan 9, 2:18 PM PST | Wind Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 32 hr |
Nearby
Winter Storm Warnings in California, 2013Every winter storm warning in 2013
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.