Alert archive / California / Wind Advisories in 2013
Wind Advisory 7, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this wind advisory at Oct 27, 2013, 9:09 PM PDT for 9 counties in California. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Oct 27, 2013, 9:09 PM PDT (04:09 UTC)
- Expired
- Oct 28, 2013, 3:00 AM PDT
- In force
- 6 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, Napa County, CA, San Mateo County, CA, Santa Clara County, CA, Santa Cruz County, CA, Sonoma County, CA
The radar
The San Francisco radar (KMUX), 78 km from the middle of the area, began a volume at 04:09 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 00:00Z, 4.2 hours before the alert went out and 9 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
- 809 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- -69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
794 WWUS76 KMTR 280409 NPWMTR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 909 PM PDT SUN OCT 27 2013 ...MODERATE TO OCCASIONALLY STRONG NORTHWEST WINDS EXPECTED THROUGH EARLY MONDAY MORNING... .A STORM SYSTEM MOVING ALONG THE CENTRAL CALIFORNIA COAST IS RESULTING MODERATE TO STRONG NORTHWEST WINDS. THESE CONDITIONS ARE EXPECTED TO PERSIST THROUGH EARLY MONDAY MORNING. CAZ006-505>512-281000- /O.NEW.KMTR.WI.Y.0007.131028T0409Z-131028T1000Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- NORTH BAY INTERIOR VALLEYS-NORTH BAY MOUNTAINS- SAN FRANCISCO BAY SHORELINE-SAN FRANCISCO PENINSULA COAST- EAST BAY INTERIOR VALLEYS-EAST BAY HILLS AND DIABLO RANGE- SANTA CRUZ MOUNTAINS- 909 PM PDT SUN OCT 27 2013 ...WIND ADVISORY IN EFFECT UNTIL 3 AM PDT MONDAY... THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 3 AM PDT MONDAY. * TIMING: THROUGH 3:00 AM PDT. * WINDS: 30 TO 39 MPH WITH GUSTS TO 55 MPH. * IMPACTS: POSSIBLE IMPACTS WILL INCLUDE DOWN TREES AND POWER LINES AS WELL AS DIFFICULT DRIVING CONDITIONS. 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. && $$
1 follow-up statement
141 WWUS76 KMTR 280942 NPWMTR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 242 AM PDT MON OCT 28 2013 CAZ006-505>512-281045- /O.EXP.KMTR.WI.Y.0007.000000T0000Z-131028T1000Z/ SAN FRANCISCO- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- NORTH BAY INTERIOR VALLEYS-NORTH BAY MOUNTAINS- SAN FRANCISCO BAY SHORELINE-SAN FRANCISCO PENINSULA COAST- EAST BAY INTERIOR VALLEYS-EAST BAY HILLS AND DIABLO RANGE- SANTA CRUZ MOUNTAINS- 242 AM PDT MON OCT 28 2013 ...WIND ADVISORY WILL EXPIRE AT 3 AM PDT EARLY THIS MORNING... THE WIND ADVISORY WILL EXPIRE AT 3 AM PDT EARLY THIS MORNING. THE PERIOD OF STRONGEST WINDS HAS NOW SUBSIDED...THEREFORE THE WIND ADVISORY WILL BE ALLOWED TO EXPIRE AT 3 AM. BREEZY WEST WINDS FROM 15 TO 25 MPH WITH LOCAL GUSTS TO 35 MPH WILL STILL BE POSSIBLE THIS MORNING BUT DAMAGING WINDS ASSOCIATED WITH LAST NIGHTS COLD FRONTAL PASSAGE HAVE NOW SHIFTED TO THE SOUTH. $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 28, 2:46 PM PDT | Frost Advisory | MTR | Monterey, San Benito | 36 hr |
Nearby
Wind Advisories in California, 2013Every wind advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.