Alert archive / California / Winter Storm Warnings in 2011
Winter Storm Warning 5, NWS San Diego, CA
NWS San Diego, CA issued this winter storm warning at Mar 19, 2011, 4:48 AM PDT for Riverside County, San Bernardino County, California. It took effect at Mar 20, 2011, 6:00 AM PDT. It was in force for 21 hr. 1 report 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
- Mar 19, 2011, 4:48 AM PDT (11:48 UTC)
- In effect from
- Mar 20, 2011, 6:00 AM PDT
- Expired
- Mar 21, 2011, 2:59 AM PDT
- In force
- 21 hr
- Issued by
- NWS San Diego, CA
The radar
The Santa Ana Mts radar (KSOX), 152 km from the middle of the area, began a volume at 11:48 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 |
|---|---|---|---|
| Mar 20, 9:00 PM PDT | HEAVY SNOW 18 | Wrightwood, CA | 18 INCHES OF SNOW AT WRIGHTWOOD. MODERATE SNOW FALLING AS OF 9PM. |
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 00:00Z, 11.8 hours before the alert went out and 195 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
- 3823 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
064 WWUS46 KSGX 191148 WSWSGX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 448 AM PDT SAT MAR 19 2011 ...HEAVY SNOWFALL FOR THE MOUNTAINS ABOVE 6000 FEET FOR SUNDAY AND SUNDAY NIGHT... .A PACIFIC STORM SYSTEM WILL BRING HEAVY SNOWFALL AND STRONG GUSTY WINDS TO THE MOUNTAINS ABOVE 6000 FEET FOR SUNDAY AND SUNDAY NIGHT. CAZ055-192100- /O.NEW.KSGX.WS.W.0005.110320T1300Z-110321T1300Z/ SAN BERNARDINO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...ANGELUS OAKS...BALDWIN LAKE... BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...FAWNSKIN... FOREST FALLS...RUNNING SPRINGS...WRIGHTWOOD 448 AM PDT SAT MAR 19 2011 ...WINTER STORM WARNING IN EFFECT FROM 6 AM SUNDAY TO 6 AM PDT MONDAY ABOVE 6000 FEET... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A WINTER STORM WARNING ABOVE 6000 FEET FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 6 AM SUNDAY TO 6 AM PDT MONDAY. * ELEVATION: ABOVE 6000 FEET. * SNOW LEVELS: 5500 TO 6000 FEET SUNDAY...LOWERING TO AROUND 5000 FEET BY MONDAY MORNING. * SNOW ACCUMULATIONS: 8 TO 16 INCHES ABOVE 6000 FEET WITH LOCAL ACCUMULATIONS OF 2 TO 3 FEET ABOVE 7000 FEET. * TIMING: SUNDAY MORNING THROUGH SUNDAY NIGHT. * LOCATIONS INCLUDE: ANGELUS OAKS...BALDWIN LAKE...BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...FAWNSKIN...FOREST FALLS...RUNNING SPRINGS...WRIGHTWOOD * WINDS: SOUTH TO SOUTHWEST 25 TO 35 MPH WITH GUSTS TO 50 MPH. * VISIBILITY: NEAR ZERO AT TIMES IN HEAVY SNOW...BLOWING SNOW...AND DENSE 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. 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. && $$ CAZ056-192100- /O.NEW.KSGX.WS.W.0005.110321T0100Z-110321T1300Z/ RIVERSIDE COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...PINE COVE 448 AM PDT SAT MAR 19 2011 ...WINTER STORM WARNING IN EFFECT FROM 6 PM SUNDAY TO 6 AM PDT MONDAY ABOVE 6000 FEET... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A WINTER STORM WARNING ABOVE 6000 FEET FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 6 PM SUNDAY TO 6 AM PDT MONDAY. * ELEVATION: ABOVE 6000 FEET. * SNOW LEVELS: NEAR 5500 FEET...LOWERING TO NEAR 5000 FEET BY MONDAY MORNING. * SNOW ACCUMULATIONS: 6 TO 12 INCHES ABOVE 6000 FEET WITH LOCAL AMOUNTS TO 18 INCHES ABOVE 7000 FEET. * TIMING: SUNDAY NIGHT. * LOCATIONS INCLUDE: PINE COVE * WINDS: SOUTH TO SOUTHWEST 25 TO 35 MPH WITH GUSTS TO 50 MPH. * VISIBILITY: NEAR ZERO AT TIMES IN HEAVY SNOW...BLOWING SNOW...AND DENSE FOG * IMPACTS: SNOW...BLOWING SNOW...AND DENSE FOG WILL CAUSE LOCAL VISIBILITY NEAR ZERO AT TIMES. TRAVELERS THROUGH THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS WINTER WEATHER CONDITIONS. MOTORISTS ARE URGED TO CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. ALWAYS CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING IF YOU MUST TRAVEL INTO THE MOUNTAINS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ FOR ROAD CONDITION INFORMATION IN CALIFORNIA...DIAL 8 0 0 4 2 7 7 6 2 3 IF INSIDE CALIFORNIA OR 9 1 6 4 5 5 7 6 2 3 IF OUTSIDE CALIFORNIA. MARTIN
5 follow-up statements
750 WWUS46 KSGX 192004 WSWSGX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 104 PM PDT SAT MAR 19 2011 ...HEAVY SNOWFALL FOR THE MOUNTAINS ABOVE 6000 FEET FOR SUNDAY AND SUNDAY NIGHT... .A PACIFIC STORM SYSTEM WILL BRING HEAVY SNOWFALL AND STRONG GUSTY WINDS TO THE MOUNTAINS ABOVE 6000 FEET FOR SUNDAY AND SUNDAY NIGHT. CAZ055-201100- /O.CON.KSGX.WS.W.0005.110320T1300Z-110321T1300Z/ SAN BERNARDINO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...ANGELUS OAKS...BALDWIN LAKE... BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...FAWNSKIN... FOREST FALLS...RUNNING SPRINGS...WRIGHTWOOD 104 PM PDT SAT MAR 19 2011 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM SUNDAY TO 6 AM PDT MONDAY... A WINTER STORM WARNING FOR HEAVY SNOW REMAINS IN EFFECT FROM 6 AM SUNDAY TO 6 AM PDT MONDAY. * ELEVATION: ABOVE 6000 FEET. * SNOW LEVELS: 5500 TO 6000 FEET SUNDAY...LOWERING TO AROUND 5000 FEET BY MONDAY MORNING. * SNOW ACCUMULATIONS: 8 TO 16 INCHES ABOVE 6000 FEET WITH LOCAL ACCUMULATIONS OF 2 TO 3 FEET ABOVE 7000 FEET. * TIMING: SUNDAY MORNING THROUGH SUNDAY NIGHT. * LOCATIONS INCLUDE: ANGELUS OAKS...BALDWIN LAKE...BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...FAWNSKIN...FOREST FALLS...RUNNING SPRINGS...WRIGHTWOOD * WINDS: SOUTH TO SOUTHWEST 25 TO 35 MPH WITH GUSTS TO 50 MPH. * VISIBILITY: NEAR ZERO AT TIMES IN HEAVY SNOW...BLOWING SNOW...AND DENSE 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. 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. && $$ CAZ056-201100- /O.CON.KSGX.WS.W.0005.110321T0100Z-110321T1300Z/ RIVERSIDE COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...PINE COVE 104 PM PDT SAT MAR 19 2011 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM SUNDAY TO 6 AM PDT MONDAY... A WINTER STORM WARNING FOR HEAVY SNOW REMAINS IN EFFECT FROM 6 PM SUNDAY TO 6 AM PDT MONDAY. * ELEVATION: ABOVE 6000 FEET. * SNOW LEVELS: NEAR 5500 FEET...LOWERING TO NEAR 5000 FEET BY MONDAY MORNING. * SNOW ACCUMULATIONS: 6 TO 12 INCHES ABOVE 6000 FEET WITH LOCAL AMOUNTS TO 18 INCHES ABOVE 7000 FEET. * TIMING: SUNDAY NIGHT. * LOCATIONS INCLUDE: IDYLLWILD AND PINE COVE. * WINDS: SOUTH TO SOUTHWEST 25 TO 35 MPH WITH GUSTS TO 50 MPH. * VISIBILITY: NEAR ZERO AT TIMES IN HEAVY SNOW...BLOWING SNOW...AND DENSE FOG * IMPACTS: SNOW...BLOWING SNOW...AND DENSE FOG WILL CAUSE LOCAL VISIBILITY NEAR ZERO AT TIMES. TRAVELERS THROUGH THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS WINTER WEATHER CONDITIONS. MOTORISTS ARE URGED TO CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. ALWAYS CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING IF YOU MUST TRAVEL INTO THE MOUNTAINS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ058-201100- /O.NEW.KSGX.WW.Y.0004.110321T0100Z-110321T1300Z/ SAN DIEGO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...BOULEVARD...CAMERON...CAMPO... CUYAMACA...DESCANSO...JULIAN...LAKE HENSHAW...MORENA VILLAGE... MOUNT LAGUNA...OAK GROVE...PINE HILLS...PINE VALLEY...RANCHITA... SANTA YSABEL...WARNER SPRINGS 104 PM PDT SAT MAR 19 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM SUNDAY TO 6 AM PDT MONDAY... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 6 PM SUNDAY TO 6 AM PDT MONDAY. * SNOW LEVELS: ABOUT 6000 FEET...LOWERING TO NEAR 5000 FEET BY MONDAY MORNING. * SNOW ACCUMULATIONS: 6 TO 8 INCHES WITH LOCALLY GREATER AMOUNTS ON THE MOUNT LAGUNA AND CUYAMACA PEAKS. * TIMING: SUNDAY NIGHT. * WINDS: SOUTH TO SOUTHWEST WINDS 20 TO 30 MPH GUSTING TO 55 AT TIMES...WITH STRONGEST WINDS ON EAST SLOPES. * VISIBILITY: NEAR ZERO AT TIMES IN SNOW...BLOWING SNOW...AND DENSE 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. ALWAYS CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING IF YOU MUST TRAVEL INTO THE MOUNTAINS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ FOR ROAD CONDITION INFORMATION IN CALIFORNIA...DIAL 8 0 0 4 2 7 7 6 2 3 IF INSIDE CALIFORNIA OR 9 1 6 4 5 5 7 6 2 3 IF OUTSIDE CALIFORNIA. PG
485 WWUS46 KSGX 200955 WSWSGX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 255 AM PDT SUN MAR 20 2011 ...HEAVY SNOWFALL FOR THE MOUNTAINS ABOVE 6000 FEET THROUGH TONIGHT... .A PACIFIC STORM SYSTEM WILL BRING HEAVY SNOWFALL AND STRONG GUSTY WINDS TO THE MOUNTAINS ABOVE 6000 FEET THROUGH TONIGHT. CAZ055-202100- /O.CON.KSGX.WS.W.0005.110320T1300Z-110321T1300Z/ SAN BERNARDINO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...ANGELUS OAKS...BALDWIN LAKE... BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...FAWNSKIN... FOREST FALLS...RUNNING SPRINGS...WRIGHTWOOD 255 AM PDT SUN MAR 20 2011 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 6 AM PDT MONDAY ABOVE 6000 FEET... A WINTER STORM WARNING ABOVE 6000 FEET REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 6 AM PDT MONDAY. * ELEVATION: ABOVE 6000 FEET. * SNOW LEVELS: 4500 TO 5000 FEET THIS MORNING...RISING TO AROUND 5500 FEET FOR THIS AFTERNOON AND THEN EVENING...THEN DECREASING TO AROUND 4500 FEET BY MONDAY MORNING. * SNOW ACCUMULATIONS: 8 TO 16 INCHES ABOVE 6000 FEET WITH LOCAL ACCUMULATIONS OF 2 TO 4 FEET ABOVE 7000 FEET. * TIMING: THROUGH TONIGHT. THE HEAVIEST SNOWFALL IS EXPECTED FOR THIS EVENING THROUGH LATE TONIGHT. * LOCATIONS INCLUDE: ANGELUS OAKS...BALDWIN LAKE...BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...FAWNSKIN... FOREST FALLS...RUNNING SPRINGS...WRIGHTWOOD * WINDS: SOUTH TO SOUTHWEST 25 TO 35 MPH WITH GUSTS TO 55 MPH. * VISIBILITY: NEAR ZERO AT TIMES IN HEAVY SNOW...BLOWING SNOW... AND DENSE 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. 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. && $$ CAZ056-202100- /O.CON.KSGX.WS.W.0005.110321T0100Z-110321T1300Z/ RIVERSIDE COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...PINE COVE 255 AM PDT SUN MAR 20 2011 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 AM PDT MONDAY ABOVE 6000 FEET... A WINTER STORM WARNING ABOVE 6000 FEET REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 AM PDT MONDAY. * ELEVATION: ABOVE 6000 FEET. * SNOW LEVELS: NEAR 5500 FEET THIS EVENING...THEN DECREASING TO AROUND 4500 FEET BY MONDAY MORNING. * SNOW ACCUMULATIONS: 6 TO 12 INCHES ABOVE 6000 FEET WITH LOCAL AMOUNTS TO 18 INCHES ABOVE 7000 FEET. * TIMING: TONIGHT. * LOCATIONS INCLUDE: PINE COVE * WINDS: SOUTH TO SOUTHWEST 25 TO 35 MPH WITH GUSTS TO 50 MPH. * VISIBILITY: NEAR ZERO AT TIMES IN HEAVY SNOW...BLOWING SNOW... AND DENSE 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. 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. && $$ CAZ058-202100- /O.EXT.KSGX.WW.Y.0004.110321T0500Z-110321T1600Z/ SAN DIEGO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...CUYAMACA...MOUNT LAGUNA 255 AM PDT SUN MAR 20 2011 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 PM THIS EVENING TO 9 AM PDT MONDAY ABOVE 5500 FEET... THE WINTER WEATHER ADVISORY ABOVE 5500 FEET IS NOW IN EFFECT FROM 10 PM THIS EVENING TO 9 AM PDT MONDAY. * SNOW LEVELS: ABOUT 6000 FEET...LOWERING TO NEAR 5000 MONDAY MORNING. * SNOW ACCUMULATIONS: 2 TO 4 INCHES WITH LOCALLY GREATER AMOUNTS ON THE MOUNT LAGUNA AND CUYAMACA PEAKS. * TIMING: LATE TONIGHT THROUGH MONDAY MORNING. * WINDS: SOUTH TO SOUTHWEST WINDS 20 TO 30 MPH GUSTING TO 55 AT TIMES...WITH STRONGEST WINDS ON EAST SLOPES. * VISIBILITY: NEAR ZERO AT TIMES IN SNOW...BLOWING SNOW...AND DENSE FOG. * IMPACTS: SNOW...BLOWING SNOW...AND DENSE FOG WILL CAUSE LOCAL VISIBILITY NEAR ZERO AT TIMES. TRAVELERS THROUGH THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS WINTER WEATHER CONDITIONS. MOTORISTS ARE URGED TO CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. ALWAYS CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING IF YOU MUST TRAVEL INTO THE MOUNTAINS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ MARTIN
478 WWUS46 KSGX 202001 WSWSGX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 101 PM PDT SUN MAR 20 2011 ...HEAVY SNOWFALL FOR THE MOUNTAINS ABOVE 6000 FEET THROUGH TONIGHT... .A PACIFIC STORM SYSTEM WILL BRING HEAVY SNOWFALL AND STRONG GUSTY WINDS TO THE MOUNTAINS ABOVE 6000 FEET THROUGH TONIGHT. CAZ055-210530- /O.CON.KSGX.WS.W.0005.000000T0000Z-110321T1300Z/ SAN BERNARDINO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...ANGELUS OAKS...BALDWIN LAKE... BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...FAWNSKIN... FOREST FALLS...RUNNING SPRINGS...WRIGHTWOOD 101 PM PDT SUN MAR 20 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM PDT MONDAY... A WINTER STORM WARNING FOR HEAVY SNOW REMAINS IN EFFECT UNTIL 6 AM PDT MONDAY. * ELEVATION: ABOVE 6000 FEET. * SNOW LEVELS: ABOVE 6000 FEET THIS AFTERNOON AND EVENING...THEN LOWERING TO AROUND 4500 FEET BY MONDAY MORNING. * SNOW ACCUMULATIONS: 8 TO 16 INCHES BETWEEN 6000 AND 7000 FEET WITH LOCAL ACCUMULATIONS OF 2 TO 4 FEET ABOVE 7000 FEET. * TIMING: THROUGH TONIGHT. THE HEAVIEST SNOWFALL IS EXPECTED FOR THIS EVENING THROUGH LATE TONIGHT. * LOCATIONS INCLUDE: ANGELUS OAKS...BALDWIN LAKE...BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...FAWNSKIN... FOREST FALLS...RUNNING SPRINGS AND WRIGHTWOOD. * WINDS: SOUTH TO SOUTHWEST 25 TO 35 MPH WITH GUSTS TO 55 MPH. * VISIBILITY: NEAR ZERO AT TIMES IN HEAVY SNOW...BLOWING SNOW...AND DENSE 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. 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. && $$ CAZ056-210530- /O.CON.KSGX.WS.W.0005.110321T0100Z-110321T1300Z/ RIVERSIDE COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...PINE COVE 101 PM PDT SUN MAR 20 2011 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 AM PDT MONDAY... A WINTER STORM WARNING FOR HEAVY SNOW REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 AM PDT MONDAY. * ELEVATION: ABOVE 6000 FEET. * SNOW LEVELS: ABOVE 6000 FEET THIS AFTERNOON...LOWERING TO AROUND 4500 FEET BY MONDAY MORNING. * SNOW ACCUMULATIONS: 6 TO 12 INCHES BETWEEN 6000 AND 7000 FEET WITH LOCAL AMOUNTS TO 18 INCHES ABOVE 7000 FEET. * TIMING: TONIGHT. * LOCATIONS INCLUDE: PINE COVE AND IDYLLWILD. * WINDS: SOUTH TO SOUTHWEST 25 TO 35 MPH WITH GUSTS TO 50 MPH. * VISIBILITY: NEAR ZERO AT TIMES IN HEAVY SNOW...BLOWING SNOW...AND DENSE FOG * IMPACTS: SNOW...BLOWING SNOW...AND DENSE FOG WILL CAUSE LOCAL VISIBILITY NEAR ZERO AT TIMES. TRAVELERS THROUGH THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS WINTER WEATHER CONDITIONS. MOTORISTS ARE URGED TO CHECK THE LATEST ROAD REPORTS BEFORE DEPARTING. ALWAYS CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING IF YOU MUST TRAVEL INTO THE MOUNTAINS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ058-210530- /O.CON.KSGX.WW.Y.0004.110321T0500Z-110321T1600Z/ SAN DIEGO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...CUYAMACA...MOUNT LAGUNA 101 PM PDT SUN MAR 20 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 9 AM PDT MONDAY... A WINTER WEATHER ADVISORY FOR SNOW REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 9 AM PDT MONDAY. * SNOW LEVELS: ABOUT 6000 FEET...LOWERING TO ABOUT 5000 FEET MONDAY MORNING. * SNOW ACCUMULATIONS: 2 TO 4 INCHES WITH LOCALLY GREATER AMOUNTS ON THE MOUNT LAGUNA AND CUYAMACA PEAKS. * TIMING: LATE TONIGHT THROUGH MONDAY MORNING. * WINDS: SOUTH TO SOUTHWEST WINDS 20 TO 30 MPH GUSTING TO 55 AT TIMES...WITH STRONGEST WINDS ON EAST SLOPES. * VISIBILITY: NEAR ZERO AT TIMES IN SNOW...BLOWING SNOW...AND DENSE 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. ALWAYS CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING IF YOU MUST TRAVEL INTO THE MOUNTAINS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ PG
358 WWUS46 KSGX 210243 WSWSGX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 743 PM PDT SUN MAR 20 2011 ...HEAVY SNOWFALL AND STRONG WINDS FOR THE MOUNTAINS ABOVE 6000 FEET THROUGH TONIGHT... .A PACIFIC STORM SYSTEM WILL BRING HEAVY SNOWFALL AND STRONG GUSTY WINDS TO THE MOUNTAINS ABOVE 6000 FEET THROUGH TONIGHT. CAZ055-211045- /O.CON.KSGX.WS.W.0005.000000T0000Z-110321T1300Z/ SAN BERNARDINO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...ANGELUS OAKS...BALDWIN LAKE... BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...FAWNSKIN... FOREST FALLS...RUNNING SPRINGS...WRIGHTWOOD 743 PM PDT SUN MAR 20 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM PDT MONDAY... A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW REMAINS IN EFFECT UNTIL 6 AM PDT MONDAY. * ELEVATION: ABOVE 6000 FEET. * SNOW LEVELS: AROUND 5500 FEET THIS EVENING...THEN LOWERING TO AROUND 4500 FEET BY MONDAY MORNING. * SNOW ACCUMULATIONS: 20 TO 30 INCHES BETWEEN 6000 AND 7000 FEET WITH LOCAL ACCUMULATIONS OF 2 TO 4 FEET ABOVE 7000 FEET. * TIMING: THROUGH TONIGHT. * LOCATIONS INCLUDE: ANGELUS OAKS...BALDWIN LAKE...BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...FAWNSKIN... FOREST FALLS...LAKE ARROWHEAD...RUNNING SPRINGS AND WRIGHTWOOD. * WINDS: SOUTH 25 TO 35 MPH WITH GUSTS TO 55 MPH...BECOMING SOUTHWEST 20 TO 30 MPH WITH HIGHER GUSTS AFTER MIDNIGHT. * VISIBILITY: NEAR ZERO AT TIMES IN HEAVY SNOW...BLOWING SNOW... AND DENSE FOG. * IMPACTS: TRAVELERS THROUGH THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS WINTER WEATHER CONDITIONS AND POSTPONE TRAVEL IF POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT... FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. && $$ CAZ056-211045- /O.CON.KSGX.WS.W.0005.000000T0000Z-110321T1300Z/ RIVERSIDE COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...PINE COVE 743 PM PDT SUN MAR 20 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM PDT MONDAY... A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW REMAINS IN EFFECT UNTIL 6 AM PDT MONDAY. * ELEVATION: ABOVE 6000 FEET. * SNOW LEVELS: AROUND 6000 FEET THIS EVENING...LOWERING TO AROUND 4500 FEET BY MONDAY MORNING. * SNOW ACCUMULATIONS: 6 TO 12 INCHES BETWEEN 6000 AND 7000 FEET WITH LOCAL AMOUNTS TO 18 INCHES ABOVE 7000 FEET. * TIMING: TONIGHT. * LOCATIONS INCLUDE: PINE COVE AND IDYLLWILD. * WINDS: SOUTH 25 TO 35 MPH WITH GUSTS TO 55 MPH...BECOMING WEST 20 TO 30 MPH WITH HIGHER GUSTS AFTER 2 AM. * VISIBILITY: NEAR ZERO AT TIMES IN HEAVY SNOW...BLOWING SNOW... AND DENSE FOG * IMPACTS: TRAVELERS THROUGH THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS WINTER WEATHER CONDITIONS AND POSTPONE TRAVEL IF POSSIBLE. 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. && $$ CAZ058-211045- /O.CON.KSGX.WW.Y.0004.110321T0500Z-110321T1600Z/ SAN DIEGO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...CUYAMACA...MOUNT LAGUNA 743 PM PDT SUN MAR 20 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT MONDAY... A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW REMAINS IN EFFECT UNTIL 9 AM PDT MONDAY. * SNOW LEVELS: ABOUT 6000 FEET...LOWERING TO ABOUT 5000 FEET MONDAY MORNING. * SNOW ACCUMULATIONS: 2 TO 4 INCHES WITH LOCALLY GREATER AMOUNTS ON MOUNT LAGUNA AND CUYAMACA PEAKS. * TIMING: LATE TONIGHT THROUGH MONDAY MORNING. * WINDS: SOUTH WINDS 20 TO 30 MPH GUSTING TO 55 AT TIMES...BECOMING SOUTHWEST 20 TO 30 MPH WITH HIGHER GUSTS. * VISIBILITY: NEAR ZERO AT TIMES IN SNOW...BLOWING SNOW...AND DENSE FOG. * IMPACTS: TRAVELERS THROUGH THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS WINTER WEATHER CONDITIONS BY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ JAD
628 WWUS46 KSGX 210959 WSWSGX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 259 AM PDT MON MAR 21 2011 ...SCATTERED SNOW SHOWERS FOR THE MOUNTAINS TODAY... .COLD MOIST UNSTABLE AIR MOVING INLAND ACROSS SOUTHWEST CALIFORNIA WILL CONTINUE SCATTERED SNOW SHOWERS OVER THE MOUNTAINS ABOVE 4000 TO 4500 FEET TODAY. CAZ055-056-212100- /O.CAN.KSGX.WS.W.0005.000000T0000Z-110321T1300Z/ /O.NEW.KSGX.WW.Y.0005.110321T1000Z-110322T0100Z/ SAN BERNARDINO COUNTY MOUNTAINS-RIVERSIDE COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...ANGELUS OAKS...BALDWIN LAKE... BARTON FLATS...BIG BEAR CITY...BIG BEAR LAKE...CRESTLINE... FAWNSKIN...FOREST FALLS...LAKE ARROWHEAD...MOUNT BALDY... MOUNTAIN HOME VILLAGE...RUNNING SPRINGS...TWIN PEAKS... WRIGHTWOOD...GARNER VALLEY...IDYLLWILD...PINE COVE...VISTA GRANDE 259 AM PDT MON MAR 21 2011 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM PDT THIS EVENING ABOVE 4500 FEET... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A WINTER WEATHER ADVISORY ABOVE 4500 FEET FOR SNOW...WHICH IS IN EFFECT UNTIL 6 PM PDT THIS EVENING. THE WINTER STORM WARNING HAS BEEN CANCELLED. * ELEVATION: ABOVE 4500 FEET. * SNOW LEVELS: AROUND 3500 TO 4000 FEET THIS MORNING...RISING TO 4000 TO 4500 FEET THIS AFTERNOON. * SNOW ACCUMULATIONS: NEW SNOWFALL OF 2 TO 4 INCHES ABOVE 4500 FEET THROUGH THIS AFTERNOON WITH LOCALLY GREATER AMOUNTS. * TIMING: SNOW SHOWERS WILL BE MOST NUMEROUS THROUGH EARLY AFTERNOON. * LOCATIONS INCLUDE: GARNER VALLEY...IDYLLWILD...PINE COVE... VISTA GRANDE...ANGELUS OAKS...BALDWIN LAKE...BARTON FLATS... BIG BEAR CITY...BIG BEAR LAKE...CRESTLINE...FAWNSKIN... FOREST FALLS...LAKE ARROWHEAD...MOUNT BALDY... MOUNTAIN HOME VILLAGE...RUNNING SPRINGS...TWIN PEAKS... WRIGHTWOOD * WINDS: SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 35 MPH. * VISIBILITY: NEAR ZERO AT TIMES IN SNOW...BLOWING SNOW... AND DENSE FOG. * IMPACTS: RESIDENTS AND TRAVELERS INTO THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS DRIVING CONDITIONS DUE TO SLICK ROADS. IF POSSIBLE...CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING. MINOR SNOW ACCUMULATIONS ARE POSSIBLE AT TIMES ON INTERSTATE 15 NEAR THE CAJON SUMMIT. 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. RESIDENTS AND TRAVELERS INTO THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS DRIVING CONDITIONS DUE TO SLICK ROADS. IF POSSIBLE...CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING. && $$ CAZ058-212100- /O.CAN.KSGX.WW.Y.0004.000000T0000Z-110321T1600Z/ /O.NEW.KSGX.WW.Y.0005.110321T1000Z-110322T0100Z/ SAN DIEGO COUNTY MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...CUYAMACA...MOUNT LAGUNA... RANCHITA 259 AM PDT MON MAR 21 2011 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM PDT THIS EVENING ABOVE 5000 FEET... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A WINTER WEATHER ADVISORY ABOVE 5000 FEET FOR SNOW...WHICH IS IN EFFECT UNTIL 6 PM PDT THIS EVENING. * SNOW LEVELS: AROUND 4000 FEET...RISING TO AROUND 4500 FEET IN THE AFTERNOON. * SNOW ACCUMULATIONS: 2 TO 4 INCHES ABOVE 5000 FEET WITH LOCAL AMOUNTS OF 4 TO 8 INCHES ON HIGHER PEAKS. * TIMING: THROUGH THIS AFTERNOON. * WINDS: SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 35 MPH. * VISIBILITY: NEAR ZERO AT TIMES IN SNOW...BLOWING SNOW...AND DENSE FOG. * IMPACTS: RESIDENTS AND TRAVELERS INTO THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS DRIVING CONDITIONS DUE TO SLICK ROADS. IF POSSIBLE...CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING. MINOR SNOW ACCUMULATIONS ARE POSSIBLE AT TIMES ON INTERSTATE 8 NEAR THE HIGHEST PASSES THROUGH THE SAN DIEGO COUNTY MOUNTAINS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. RESIDENTS AND TRAVELERS INTO THE MOUNTAINS SHOULD BE PREPARED FOR HAZARDOUS DRIVING CONDITIONS DUE TO SLICK ROADS. IF POSSIBLE...CARRY CHAINS AND TAKE EXTRA FOOD AND CLOTHING. && $$ MARTIN
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 Mar 18, 9:45 PM PDT, 7 hours 3 minutes earlier.
Area forecast discussion, Mar 18, 9:45 PM PDT, 7 hours 3 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN DIEGO CA 945 PM PDT FRI MAR 18 2011 .SYNOPSIS...A STRONG STORM OVER THE PACIFIC WILL BRING INCREASING CLOUDS...WINDS AND RAIN CHANCES THROUGH THE WEEKEND. THE CHANCES FOR LIGHT RAIN AND MOUNTAIN SNOW WILL INCREASE ON SUNDAY ACROSS THE NORTHERN AREAS. PERIODS OF HEAVY RAIN...SNOW AND STRONG WINDS ARE LIKELY SUNDAY NIGHT WITH THE PASSAGE OF THE COLD FRONT. SHOWERS WILL TAPER OFF MONDAY FOLLOWED BY DRY...WARMER WEATHER MID WEEK UNDER HIGH PRESSURE ALOFT. && .DISCUSSION...FOR SOUTHWEST CALIFORNIA INCLUDING SAN DIEGO... ORANGE...SOUTHWEST SAN BERNARDINO AND WEST RIVERSIDE COUNTIES. THE POTENT UPPER LOW OFF THE COAST OF CENTRAL CALIFORNIA BROUGHT THUNDERSTORMS...A WATERSPOUT AND A TORNADO TO THE BAY AREA THIS AFTERNOON. THIS COLD UPPER LOW WILL ROTATE SLOWLY SOUTHWARD OVER THE NEXT 48 HOURS...EVENTUALLY BRINGING RAIN AND MOUNTAIN SNOW TO SOUTHERN CALIFORNIA. THE TIMING OF THE PRECIP IS A LITTLE CLEARER AND IT APPEARS THE HEAVIEST PRECIPITATION WILL FALL SUNDAY NIGHT. BUT FIRST THINGS FIRST. EARLY TONIGHT THE SKIES WERE MAINLY CLEAR BUT THE GRADIENTS ARE TURNING MORE STRONGLY ONSHORE. EXPECT MARINE LAYER CLOUDS TO FORM AND DEEPEN TO 5000 FEET OVERNIGHT...DEEP ENOUGH FOR PATCHY DRIZZLE SATURDAY MORNING. A POWERFUL 170KT JET DIGS THE TROUGH SOUTHWARD ON SATURDAY NIGHT. STRONG SOUTHWEST FLOW AHEAD OF THE TROUGH WILL TAP INTO DEEP LAYER MOISTURE AIMED AT SOUTH-CENTRAL CALIFORNIA. LIGHT RAIN WILL BEGIN SUNDAY IN THE WAA PATTERN SET UP BY MILD SOUTHWEST WINDS AHEAD OF THE TROUGH...WITH MOST OF THE RAIN WILL FALL OVER THE SAN BERNARDINO MOUNTAINS DUE TO UPSLOPE FLOW OF THE NEARLY SATURATED AIRMASS AIDED BY 30-40 KT 850 MB WINDS. RAIN IS ALSO POSSIBLE ACROSS ORANGE COUNTY AND IN THE INLAND EMPIRE...WITH LESSER CHANCES OF RAIN FARTHER SOUTH IN SAN DIEGO COUNTY ON SUNDAY. BUT THAT WILL ALL CHANGE SUNDAY NIGHT AND RAIN WILL BECOME MORE WIDESPREAD. THE STRONG SOUTHWEST WINDS ALOFT HAVE A DEEP MOISTURE SOURCE TO TAP INTO AND BRING A PW BULLSEYE OF 1.25" INTO SOCAL SUNDAY EVENING. STRONG UPPER DYNAMICS...LOW LEVEL FORCING AND DEEP LAYER MOISTURE WILL BRING SEVERAL HOURS OF WET WEATHER BEGINNING AROUND 03Z SUNDAY IN ORANGE AND NW SAN BERNARDINO COUNTIES...AND THEN ACROSS RIVERSIDE AND SAN DIEGO COUNTIES THROUGH 12Z SUNDAY. SNOW LEVELS WILL HOVER AROUND 4500-5000 FEET IN SAN BERNARDINO COUNTY AND 500-5500 FEET IN SAN DIEGO COUNTY. CURRENT QPF TOTALS OF 1 TO 1.50" INCHES LOOK ON TARGET FOR COASTAL AND VALLEYS SECTIONS. HIGHER AMTS OF 2-4" ON THE COASTAL SLOPES OF SAN BERNARDINO AND ORANGE COUNTIES DUE TO STRONG OROGRAPHICS IN THE SOUTHERLY WINDS AHEAD OF THE TROUGH. MUCH OF THIS WILL BE SNOW ABOVE 5000 FEET...A WINTER STORM WARNING WILL LIKELY BE NEEDED FOR THIS EVENT. THE HEAVY RAINFALL COULD RESULT IN AREAS OF FLOODING IN THE LOWER ELEVATIONS. EVEN THE DESERTS COULD SEE SIGNIFICANT RAIN WITH THIS PATTERN WITH A HALF AN INCH OR MORE. THE LOW WILL SWING EASTWARD EARLY MONDAY AND THE HEAVY RAIN WILL BE REPLACED BY SCATTERED SHOWERS IN THE COLD UNSTABLE CYCLONIC FLOW. WINDS WILL INCREASE SUNDAY EVENING AS THE COLD FRONT NEARS. A 130 KT JET TRACKS ACROSS SOCAL SUNDAY EVENING...AND SOUTHERLY LOW LEVEL WINDS AHEAD OF THE COLD FRONT WILL INCREASE TO 20 TO 30 MPH WITH GUSTS TO 40 MPH IN THE COASTAL AND VALLEYS ZONES WHERE WIND ADVISORIES MAY BE NEEDED. MOUNTAIN WINDS WILL BE EVEN HIGHER WITH GUSTS TO 60 MPH POSSIBLE. OVER THE COASTAL WATERS...A GALE WATCH HAS BEEN ISSUED SUNDAY AFTERNOON AND SUNDAY NIGHT FOR SOUTHWEST WINDS OF 30-40 MPH. THE TROUGH MOVES EAST MONDAY NIGHT WITH FAIR AND WARMER WEATHER TUESDAY AND WEDNESDAY. A FAST MOVING TROUGH WILL BRING US OUR NEXT CHANCE FOR SHOWERS THURSDAY. && .AVIATION... 190355Z...AREAS OF MARINE STRATUS EXPECTED TO DEVELOP RAPIDLY TONIGHT AFTER 06Z AND FILL INLAND TO THE FOOTHILLS. THE LAYER WILL DEEPEN TO AROUND 6K FT MSL BY 18Z ON SAT AND MAY PRODUCE AREAS OF DZ OR -RA AT TIMES. IFR/MVFR CIGS THAT DEVELOP OVERNIGHT WEST OF THE MOUNTAINS SHOULD RAPIDLY MIX OUT AFTER 20Z ON SAT LEAVING VFR CONDITIONS AND UNRESTRICTED VIS...EXCEPT ON THE COASTAL MOUNTAIN SLOPES WHERE THE TERRAIN WILL REMAIN LOCALLY OBSCURED. ABOVE THE MARINE LAYER...BKN CLOUDS WILL BE MOSTLY ABOVE FL120 THROUGH SAT. && .MARINE... NO ISSUES UNTIL SUNDAY WHEN A LONG S-SW FETCH WILL BUILD A LARGE SHORT PERIOD S SWELL OVER THE COASTAL WATERS. WINDS OF 25 TO 35 KNOTS WITH HIGHER GUSTS ARE POSSIBLE FROM LATE ON SUN THROUGH SUN NIGHT. A GALE WATCH HAS BEEN POSTED. THE ROUGH SEAS AND POSSIBLE GALE FORCE WINDS WILL CREATE HAZARDOUS CONDITIONS FOR SMALL CRAFT. && .SGX WATCHES/WARNINGS/ADVISORIES... CA...SPECIAL WEATHER STATEMENT. SEE LAXSPSSGX. PZ...GALE WATCH FOR THE COASTAL WATERS SUNDAY. SEE LAXMWWSGX. && PUBLIC...MOEDE AVIATION/MARINE...JAD
Hazardous weather outlook, Mar 18, 4:30 PM PDT, 12 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN DIEGO CA 430 PM PDT FRI MAR 18 2011 CAZ042-043-048-050-055>058-060>062-PZZ750-PZZ775-191200- 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- 430 PM PDT FRI MAR 18 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE...TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. A STRONG PACIFIC STORM WILL BRING RAIN...MOUNTAIN SNOW AND STRONG WINDS SUNDAY NIGHT AND MONDAY. .SPOTTER INFORMATION STATEMENT...SKYWARN SPOTTER ACTIVATION IS NOT REQUESTED FOR THIS AREA...HOWEVER WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS. MOEDE
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 18, 8:53 PM PDT | Gale Watch | SGX | 7 hr | |
| Mar 19, 3:24 AM PDT | Gale Warning | SGX | 42 hr | |
| Mar 19, 4:14 AM PDT | High Wind Warning | SGX | San Bernardino | 44 hr |
| Mar 19, 4:14 AM PDT | Wind Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 46 hr |
| Mar 19, 5:10 AM PDT | Flash Flood Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 45 hr |
| Mar 19, 1:04 PM PDT | Winter Weather Advisory | SGX | San Diego | 38 hr |
Nearby
Winter Storm Warnings in California, 2011Every winter storm warning in 2011
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.