Alert archive / California / Wind Advisories in 2008

Wind Advisory 7, NWS San Francisco Bay Area, CA

January 27, 20084 counties in California

NWS San Francisco Bay Area, CA issued this wind advisory at Jan 27, 2008, 2:46 AM PST for 4 counties in California. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jan 27, 2008, 2:46 AM PST (10:46 UTC)
Expired
Jan 27, 2008, 7:00 AM PST
In force
4 hr
Issued by
NWS San Francisco Bay Area, CA

Counties Monterey County, CA, San Mateo County, CA, Santa Clara County, CA, Santa Cruz County, CA

The radar

The San Francisco radar (KMUX), 20 km from the middle of the area, began a volume at 10:45 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, 10.8 hours before the alert went out and 89 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.

Skew-T log-pSkew-T log-p diagram, Oakland, CA at 00:00Z on 2008-01-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Oakland, CA at 00:00Z on 2008-01-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1788 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
216 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS76 KMTR 271046
NPWMTR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
246 AM PST SUN JAN 27 2008

...STRONG WINDS OVER THE HIGHER ELEVATIONS THROUGH EARLY THIS
MORNING...

.A POTENT STORM SYSTEM IN THE EASTERN PACIFIC WILL CONTINUE TO
PRODUCE STRONG WINDS OVER THE HIGHER TERRAIN IN THE SAN FRANCISCO
AND MONTEREY BAY REGIONS EARLY TODAY. AS THE STORM SYSTEM SLOWLY MOVES
TOWARD THE COAST WINDS SHOULD DIMINISH BY EARLY THIS AFTERNOON.

CAZ507-511-512-517-271500-
/O.NEW.KMTR.WI.Y.0007.080127T1046Z-080127T1500Z/
NORTH BAY MOUNTAINS-EAST BAY HILLS AND DIABLO RANGE-
SANTA CRUZ MOUNTAINS-
SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST-
246 AM PST SUN JAN 27 2008

...WIND ADVISORY IN EFFECT UNTIL 7 AM PST THIS MORNING...

THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 7 AM PST THIS MORNING. 

STRONG SOUTHERLY WINDS OF 20 TO 30 MPH WITH GUSTS TO AROUND 50 MPH
WILL BE POSSIBLE THROUGH THE EARLY MORNING. THE STRONGEST WINDS
WILL LIKELY OCCUR ABOVE 1000 FEET.

A WIND ADVISORY MEANS THAT WIND GUSTS IN EXCESS OF 45 MPH ARE
EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING
DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA
CAUTION.

$$

MM
1 follow-up statement
000 
WWUS76 KMTR 271454
NPWMTR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
654 AM PST SUN JAN 27 2008


CAZ507-511-512-517-271600-
/O.EXP.KMTR.WI.Y.0007.000000T0000Z-080127T1500Z/
NORTH BAY MOUNTAINS-EAST BAY HILLS AND DIABLO RANGE-
SANTA CRUZ MOUNTAINS-
SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST-
654 AM PST SUN JAN 27 2008

...WIND ADVISORY WILL EXPIRE AT 7 AM PST THIS MORNING...

THE WIND ADVISORY WILL EXPIRE AT 7 AM PST THIS MORNING. 

THE STRONG SOUTHERLY WINDS HAVE DIMINISHED OVER THE REGION EARLY THIS
MORNING. THEREFORE THE WIND ADVISORY WILL BE ALLOWED TO EXPIRE.

HOWEVER...GUSTY WINDS WILL STILL BE POSSIBLE THIS AFTERNOON WITH
LOCAL GUSTS UP TO 35 MPH. THE STRONGEST WINDS WILL LIKELY OCCUR
OVER THE HIGHER PEAKS.

$$

MEHLE

The office that day

Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 27, 9:30 AM PSTSpecial Marine WarningMTR38 min

Nearby

Wind Advisories in California, 2008Every wind advisory in 2008

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.