Alert archive / California / Wind Advisories in 2012
Wind Advisory 9, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this wind advisory at Dec 22, 2012, 1:41 PM PST for 11 counties in California. It took effect at Dec 23, 2012, 4:00 AM PST. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Dec 22, 2012, 1:41 PM PST (21:41 UTC)
- In effect from
- Dec 23, 2012, 4:00 AM PST
- Expired
- Dec 23, 2012, 1:48 PM PST
- In force
- 10 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties Alameda County, CA, City and County of San Francisco, CA, Contra Costa County, CA, Marin County, CA, Monterey County, CA, Napa County, CA, San Benito County, CA, San Mateo County, CA, Santa Clara County, CA, Santa Cruz County, CA, Sonoma County, CA
The radar
The San Francisco radar (KMUX), 46 km from the middle of the area, began a volume at 21:41 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.
The nearest sounding before it
Oakland, CA (KOAK), launched 12:00Z, 9.7 hours before the alert went out and 24 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
- 123 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 789 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 209 m²/s²
- 0-3 km storm-relative helicity
- 277 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
565 WWUS76 KMTR 222141 NPWMTR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 141 PM PST SAT DEC 22 2012 ...STRONG AND GUSTY SOUTHERLY WINDS ON SUNDAY... .A STRONG STORM SYSTEM WILL APPROACH NORTHERN CALIFORNIA ON SUNDAY. STRONG AND GUSTY SOUTHERLY WINDS WILL DEVELOP EARLY SUNDAY MORNING AS THE STORM MOVES ONSHORE. THE STRONGEST WINDS ARE EXPECTED ALONG THE COAST AND IN THE HILLS...AS WELL AS AROUND SAN FRANCISCO BAY AND THE NORTHERN SALINAS VALLEY. FREQUENT SOUTHERLY WIND GUSTS FROM 45 TO 50 MPH WILL BE POSSIBLE IN AREAS UNDER THE WIND ADVISORY. LIKELY IMPACTS WILL INCLUDE DOWNED TREES...POWER OUTAGES AND HAZARDOUS DRIVING OF HIGH PROFILE VEHICLES. CAZ006-505-507-509-230400- /O.NEW.KMTR.WI.Y.0009.121223T1200Z-121223T2100Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- NORTH BAY MOUNTAINS-SAN FRANCISCO PENINSULA COAST- 141 PM PST SAT DEC 22 2012 ...WIND ADVISORY IN EFFECT FROM 4 AM TO 1 PM PST SUNDAY... THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 4 AM TO 1 PM PST SUNDAY. * TIMING: 4 AM TO 1 PM SUNDAY. * WINDS: SOUTHERLY SUSTAINED WINDS 30 MPH WITH FREQUENT GUSTS 45 TO 50 MPH. STRONGEST WINDS ALONG THE IMMEDIATE COAST AND NORTH OF POINT REYES. * IMPACTS: DOWNED TREES...BRANCHES AND POSSIBLE POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ508-511-512-230400- /O.NEW.KMTR.WI.Y.0009.121223T1400Z-121223T2200Z/ SAN FRANCISCO BAY SHORELINE-EAST BAY HILLS AND DIABLO RANGE- SANTA CRUZ MOUNTAINS- 141 PM PST SAT DEC 22 2012 ...WIND ADVISORY IN EFFECT FROM 6 AM TO 2 PM PST SUNDAY... THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 6 AM TO 2 PM PST SUNDAY. * TIMING: 6 AM TO 2 PM SUNDAY. * WINDS: SOUTHERLY WINDS 20 TO 30 MPH WITH GUSTS 45 TO 50 MPH. STRONGEST WINDS WILL BE IN THE EAST BAY HILLS AND SOUTHERLY ASPECTS OF THE SANTA CRUZ MOUNTAINS AS WELL AS NEAR SAN FRANCISCO AIRPORT AROUND THE SAN FRANCISCO BAY. * IMPACTS: DANGEROUS DRIVING OF HIGH PROFILE VEHICLES OVER BRIDGES AND PASSES SUCH AS THE ALTAMONT...PACHECO PASS AND HIGHWAY 17. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ528-230400- /O.NEW.KMTR.WI.Y.0009.121223T1500Z-121223T2300Z/ NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY- 141 PM PST SAT DEC 22 2012 ...WIND ADVISORY IN EFFECT FROM 7 AM TO 3 PM PST SUNDAY... THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 7 AM TO 3 PM PST SUNDAY. * TIMING: 7 AM TO 3 PM SUNDAY. * WINDS: SOUTHEAST WINDS 20 TO 30 MPH WITH FREQUENT GUSTS TO 45 MPH. * IMPACTS: DANGEROUS DRIVING ON HIGHWAY 101 IN THE SALINAS VALLEY WITH POSSIBLE BLOWING DUST AND OTHER DEBRIS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
2 follow-up statements
899 WWUS76 KMTR 230450 NPWMTR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 850 PM PST SAT DEC 22 2012 ...STRONG AND GUSTY SOUTHERLY WINDS LATE SATURDAY NIGHT AND SUNDAY... .A STRONG STORM SYSTEM WILL APPROACH NORTHERN CALIFORNIA LATE SATURDAY NIGHT. STRONG AND GUSTY SOUTHERLY WINDS WILL DEVELOP BY EARLY SUNDAY MORNING AS THE STORM NEARS THE COAST. THE STRONGEST WINDS ARE EXPECTED ON SUNDAY MORNING ALONG THE COAST AND IN THE HILLS...AS WELL AS AROUND SAN FRANCISCO BAY AND THE NORTHERN SALINAS VALLEY. FREQUENT SOUTHERLY WIND GUSTS FROM 40 TO 50 MPH ARE LIKELY. LOCAL WIND GUSTS TO 60 MPH ARE POSSIBLE IN THE HILLS. IMPACTS OF THESE STRONG WINDS WILL INCLUDE DOWNED TREES...POWER OUTAGES AND HAZARDOUS DRIVING OF HIGH PROFILE VEHICLES. WINDS WILL BEGIN TO DECREASE BY EARLY SUNDAY AFTERNOON. CAZ506-232100- /O.EXA.KMTR.WI.Y.0009.121223T1200Z-121223T2100Z/ NORTH BAY INTERIOR VALLEYS- 850 PM PST SAT DEC 22 2012 ...WIND ADVISORY IN EFFECT FROM 4 AM TO 1 PM PST SUNDAY... THE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 4 AM TO 1 PM PST SUNDAY FOR THE NORTH BAY INTERIOR VALLEYS. * TIMING: 4 AM TO 1 PM SUNDAY. * WINDS: SOUTHERLY SUSTAINED WINDS OF 15 TO 25 MPH WITH FREQUENT GUSTS TO 45 MPH. STRONGEST WINDS EXPECTED IN THE SOUTHERN NAPA VALLEY. * IMPACTS: DOWNED TREES AND BRANCHES. POSSIBLE POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF AT LEAST 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ510-232100- /O.EXA.KMTR.WI.Y.0009.121223T1400Z-121223T2200Z/ EAST BAY INTERIOR VALLEYS- 850 PM PST SAT DEC 22 2012 ...WIND ADVISORY IN EFFECT FROM 6 AM TO 2 PM PST SUNDAY... THE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 6 AM TO 2 PM PST SUNDAY FOR THE EAST BAY INTERIOR VALLEYS. * TIMING: 6 AM TO 2 PM SUNDAY. * WINDS: SOUTHERLY SUSTAINED WINDS OF 15 TO 25 MPH WITH GUSTS TO 45 MPH. STRONGEST WINDS EXPECTED NEAR THE DELTA. * IMPACTS: DOWNED TREES AND BRANCHES. POSSIBLE POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF AT LEAST 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ006-505-507-509-232100- /O.CON.KMTR.WI.Y.0009.121223T1200Z-121223T2100Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- NORTH BAY MOUNTAINS-SAN FRANCISCO PENINSULA COAST- 850 PM PST SAT DEC 22 2012 ...WIND ADVISORY REMAINS IN EFFECT FROM 4 AM TO 1 PM PST SUNDAY... A WIND ADVISORY REMAINS IN EFFECT FROM 4 AM TO 1 PM PST SUNDAY. * TIMING: 4 AM TO 1 PM SUNDAY. * WINDS: SOUTHERLY SUSTAINED WINDS OF 20 TO 30 MPH WITH FREQUENT GUSTS TO 50 MPH. STRONGEST WINDS ALONG THE IMMEDIATE COAST DURING THE MORNING HOURS OF SUNDAY. * IMPACTS: DOWNED TREES AND BRANCHES. POSSIBLE POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF AT LEAST 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ508-511-512-232100- /O.CON.KMTR.WI.Y.0009.121223T1400Z-121223T2200Z/ SAN FRANCISCO BAY SHORELINE-EAST BAY HILLS AND DIABLO RANGE- SANTA CRUZ MOUNTAINS- 850 PM PST SAT DEC 22 2012 ...WIND ADVISORY REMAINS IN EFFECT FROM 6 AM TO 2 PM PST SUNDAY... A WIND ADVISORY REMAINS IN EFFECT FROM 6 AM TO 2 PM PST SUNDAY. * TIMING: 6 AM TO 2 PM SUNDAY. * WINDS: SOUTHERLY SUSTAINED WINDS OF 20 TO 30 MPH WITH GUSTS TO 50 MPH. STRONGEST WINDS WILL BE IN THE EAST BAY HILLS...THROUGH PASSES IN THE SANTA CRUZ MOUNTAINS...AND AROUND THE SAN FRANCISCO BAY. * IMPACTS: DANGEROUS DRIVING OF HIGH PROFILE VEHICLES OVER BRIDGES AND PASSES SUCH AS THE ALTAMONT...PACHECO PASS AND HIGHWAY 17. POSSIBLE DOWNED TREES AND POWER LINES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF AT LEAST 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ CAZ528-232100- /O.CON.KMTR.WI.Y.0009.121223T1500Z-121223T2300Z/ NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY- 850 PM PST SAT DEC 22 2012 ...WIND ADVISORY REMAINS IN EFFECT FROM 7 AM TO 3 PM PST SUNDAY... A WIND ADVISORY REMAINS IN EFFECT FROM 7 AM TO 3 PM PST SUNDAY. * TIMING: 7 AM TO 3 PM SUNDAY. * WINDS: SOUTHEAST SUSTAINED WINDS OF 20 TO 30 MPH WITH FREQUENT GUSTS TO 45 MPH. * IMPACTS: DANGEROUS DRIVING ON HIGHWAY 101 IN THE SALINAS VALLEY. POSSIBLE DOWNED TREES AND POWER LINES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WIND GUSTS OF AT LEAST 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
113 WWUS76 KMTR 232148 NPWMTR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 148 PM PST SUN DEC 23 2012 ...WIND ADVISORY HAS BEEN CANCELLED... CAZ528-232300- /O.CAN.KMTR.WI.Y.0009.000000T0000Z-121223T2300Z/ NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY- 148 PM PST SUN DEC 23 2012 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS CANCELLED THE WIND ADVISORY. WINDS ARE NOT EXPECTED TO REACH ADVISORY CRITERIA...BUT COULD STILL GUST TO 35 MPH AT TIMES THROUGH MID AFTERNOON. $$ CAZ508-510>512-232300- /O.CAN.KMTR.WI.Y.0009.000000T0000Z-121223T2200Z/ SAN FRANCISCO BAY SHORELINE-EAST BAY INTERIOR VALLEYS- EAST BAY HILLS AND DIABLO RANGE-SANTA CRUZ MOUNTAINS- 148 PM PST SUN DEC 23 2012 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS CANCELLED THE WIND ADVISORY. WINDS HAVE STARTED TO DECREASE AS THE COLD FRONT MOVES THROUGH THE AREA. $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 22, 2:08 AM PST | Special Marine Warning | MTR | 52 min | |
| Dec 22, 2:58 AM PST | Special Marine Warning | MTR | 92 min | |
| Dec 22, 4:31 AM PST | Special Marine Warning | MTR | 89 min | |
| Dec 22, 6:03 AM PST | Special Marine Warning | MTR | 87 min | |
| Dec 22, 7:31 AM PST | Special Marine Warning | MTR | 29 min | |
| Dec 22, 2:19 PM PST | Gale Warning | MTR | 24 hr | |
| Dec 22, 2:19 PM PST | Small Craft Advisory | MTR | 24 hr |
Nearby
Wind Advisories in California, 2012Every wind advisory in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.