Alert archive / California / Wind Advisories in 2011
Wind Advisory 8, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this wind advisory at Dec 2, 2011, 1:28 PM PST for San Mateo County, Santa Clara County, Santa Cruz County, California. It took effect at Dec 2, 2011, 10:00 PM PST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Dec 2, 2011, 1:28 PM PST (21:28 UTC)
- In effect from
- Dec 2, 2011, 10:00 PM PST
- Expired
- Dec 3, 2011, 10:00 AM PST
- In force
- 12 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties San Mateo County, CA, Santa Clara County, CA, Santa Cruz County, CA
The radar
The San Francisco radar (KMUX), 14 km from the middle of the area, began a volume at 21:30 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, 9.5 hours before the alert went out and 58 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
- 4216 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
594 WWUS76 KMTR 022128 NPWMTR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 128 PM PST FRI DEC 2 2011 CAZ507-511-512-031200- /O.NEW.KMTR.WI.Y.0008.111203T0600Z-111203T1800Z/ NORTH BAY MOUNTAINS-EAST BAY HILLS AND DIABLO RANGE- SANTA CRUZ MOUNTAINS- 128 PM PST FRI DEC 2 2011 ...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST SATURDAY FOR THE NORTH BAY MOUNTAINS...THE EAST BAY HILLS AND THE DIABLO RANGE...AND THE SANTA CRUZ MOUNTAINS... THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST SATURDAY. * TIMING: WINDS WILL PICK UP THIS EVENING WITH STRONGEST WINDS EXPECTED OVERNIGHT. WINDS WILL DECREASE DURING THE DAY SATURDAY. * WINDS: SUSTAINED WIND SPEEDS OF 20 TO 35 MPH ALONG WITH FREQUENT GUSTS AS HIGH AS 50 MPH THROUGH SATURDAY MORNING. * IMPACTS: DOWNED TREES AND BRANCHES MAY CAUSE POWER OUTAGES. LOOSE OBJECTS NOT TIED DOWN MAY BLOW AROUND. DRIVING HIGH PROFILE VEHICLES WILL BE DIFFICULT AND POSSIBLY DANGEROUS. ANY STRUCTURE FIRE OR WILDFIRE COULD BE DIFFICULT TO SUPPRESS DUE TO THE STRONG WINDS. 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. && $$
1 follow-up statement
570 WWUS76 KMTR 031205 NPWMTR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 405 AM PST SAT DEC 3 2011 CAZ507-512-031315- /O.CAN.KMTR.WI.Y.0008.000000T0000Z-111203T1800Z/ NORTH BAY MOUNTAINS-SANTA CRUZ MOUNTAINS- 405 AM PST SAT DEC 3 2011 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS CANCELLED THE WIND ADVISORY. WINDS HAVE DECREASED BELOW ADVISORY CRITERIA. HOWEVER...WINDS WILL REMAIN GUSTY THIS MORNING...WITH LOCAL GUSTS TO 40 MPH POSSIBLE. $$ CAZ511-031800- /O.CON.KMTR.WI.Y.0008.000000T0000Z-111203T1800Z/ EAST BAY HILLS AND DIABLO RANGE- 405 AM PST SAT DEC 3 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... A WIND ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING. * TIMING: WINDS WILL DECREASE DURING THE DAY SATURDAY. * WINDS: SUSTAINED WIND SPEEDS OF 20 TO 35 MPH ALONG WITH FREQUENT GUSTS AS HIGH AS 50 MPH THROUGH SATURDAY MORNING. * IMPACTS: DOWNED TREES AND BRANCHES MAY CAUSE POWER OUTAGES. LOOSE OBJECTS NOT TIED DOWN MAY BLOW AROUND. DRIVING HIGH PROFILE VEHICLES WILL BE DIFFICULT AND POSSIBLY DANGEROUS. ANY STRUCTURE FIRE OR WILDFIRE COULD BE DIFFICULT TO SUPPRESS DUE TO THE STRONG WINDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT SUSTAINED WINDS OF 35 MPH...OR GUSTS TO 45 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ STROBIN
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 1, 6:41 PM PST | Wind Advisory | MTR | Monterey | 5 hr |
Nearby
Wind Advisories in California, 2011Every wind advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.