Alert archive / California / Wind Advisories in 2007

Wind Advisory 5, NWS San Francisco Bay Area, CA

September 18, 20075 counties in California

NWS San Francisco Bay Area, CA issued this wind advisory at Sep 18, 2007, 2:50 PM PDT for 5 counties in California. It took effect at Sep 18, 2007, 9:31 PM PDT. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued
Sep 18, 2007, 2:50 PM PDT (21:50 UTC)
In effect from
Sep 18, 2007, 9:31 PM PDT
Expired
Sep 19, 2007, 9:46 PM PDT
In force
24 hr
Issued by
NWS San Francisco Bay Area, CA

Counties City and County of San Francisco, CA, Marin County, CA, San Mateo County, CA, Santa Cruz County, CA, Sonoma County, CA

The radar

The San Francisco radar (KMUX), 86 km from the middle of the area, began a volume at 21:50 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, 9.8 hours before the alert went out and 26 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 12:00Z on 2007-09-18Temperature 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 12:00Z on 2007-09-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 square meters per square second.19395878Sfc1 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
965 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
43 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 182150
NPWMTR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
250 PM PDT TUE SEP 18 2007

...GUSTY NORTHWEST WINDS EXPECTED WEDNESDAY AND WEDNESDAY NIGHT...

.A STRONG AUTUMN-LIKE STORM SYSTEM WILL MOVE SOUTH ACROSS THE BAY AREA
ON WEDNESDAY AND WEDNESDAY NIGHT. THIS SYSTEM WILL BRING A CHANCE
OF THUNDERSTORMS AND AN INCREASE IN NORTHWEST WINDS TO THE BAY
AREA...WITH THE STRONGEST WINDS EXPECTED ALONG THE PACIFIC COAST
FROM THE GOLDEN GATE NORTH TO NORTHERN SONOMA COUNTY.

CAZ505-190500-
/O.NEW.KMTR.WI.Y.0005.070919T1900Z-070920T1000Z/
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
250 PM PDT TUE SEP 18 2007

...WIND ADVISORY IN EFFECT FROM 12 PM WEDNESDAY TO 3 AM PDT
THURSDAY...

THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A WIND
ADVISORY FOR THE COASTAL NORTH BAY...WHICH IS IN EFFECT FROM 12 PM
WEDNESDAY TO 3 AM PDT THURSDAY.

GUSTY NORTHWEST WINDS 25 TO 35 MPH WITH GUSTS TO 45 MPH ARE
EXPECTED TO DEVELOP MIDDAY WEDNESDAY ALONG THE PACIFIC COAST FROM
THE GOLDEN GATE NORTH TO SONOMA COUNTY...INCLUDING POINT REYES
NATIONAL SEASHORE. THE GUSTY WINDS WILL CONTINUE INTO WEDNESDAY
NIGHT THEN DECREASE BY EARLY THURSDAY MORNING.

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.

$$
4 follow-up statements
000 
WWUS76 KMTR 190431
NPWMTR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
931 PM PDT TUE SEP 18 2007

...GUSTY NORTHWEST WINDS EXPECTED WEDNESDAY AFTERNOON AND EVENING...

.A STRONG AUTUMN-LIKE STORM SYSTEM WILL MOVE SOUTH ACROSS THE BAY
AREA ON WEDNESDAY AFTERNOON AND NIGHT. THIS SYSTEM WILL BRING A
CHANCE OF THUNDERSTORMS AND AN INCREASE IN NORTHWEST WINDS TO THE
BAY AREA...WITH THE STRONGEST WINDS EXPECTED ALONG THE PACIFIC
COAST FROM SOUTHERN SAN MATEO COUNTY TO NORTHERN SONOMA COUNTY.

CAZ006-509-191300-
/O.EXA.KMTR.WI.Y.0005.070919T1900Z-070920T1000Z/
SAN FRANCISCO-SAN FRANCISCO PENINSULA COAST-
931 PM PDT TUE SEP 18 2007

...WIND ADVISORY IN EFFECT FROM 12 PM WEDNESDAY TO 3 AM PDT
THURSDAY...

THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A WIND
ADVISORY FOR SAN FRANCISCO AND SAN MATEO COUNTY COAST...WHICH IS
IN EFFECT FROM 12 PM WEDNESDAY TO 3 AM PDT THURSDAY.

NORTHWEST WINDS 25 TO 35 MPH WITH GUSTS TO 45 MPH ARE EXPECTED TO
DEVELOP MIDDAY WEDNESDAY ALONG THE PACIFIC COAST SIDE OF SAN
FRANCISCO AND SAN MATEO COUNTIES. THE GUSTY WINDS WILL CONTINUE
INTO WEDNESDAY NIGHT THEN DECREASE BY EARLY THURSDAY MORNING.

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.

$$

CAZ505-191300-
/O.CON.KMTR.WI.Y.0005.070919T1900Z-070920T1000Z/
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
931 PM PDT TUE SEP 18 2007

...WIND ADVISORY REMAINS IN EFFECT FROM 12 PM WEDNESDAY TO 3 AM
PDT THURSDAY...

A WIND ADVISORY REMAINS IN EFFECT FROM 12 PM WEDNESDAY TO 3 AM
PDT THURSDAY FOR THE COASTAL NORTH BAY. 

NORTHWEST WINDS 25 TO 35 MPH WITH GUSTS TO 45 MPH ARE EXPECTED TO
DEVELOP MIDDAY WEDNESDAY ALONG THE PACIFIC COAST FROM THE GOLDEN
GATE NORTH TO SONOMA COUNTY...INCLUDING POINT REYES NATIONAL
SEASHORE. THE GUSTY WINDS WILL CONTINUE INTO WEDNESDAY NIGHT THEN
DECREASE BY EARLY THURSDAY MORNING.

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.

$$
000 
WWUS76 KMTR 191238
NPWMTR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
538 AM PDT WED SEP 19 2007

...LOCALLY STRONG AND GUSTY NORTHWEST WINDS EXPECTED WEDNESDAY
AFTERNOON AND EVENING...

.A STRONG AUTUMN-LIKE STORM SYSTEM WILL MOVE SOUTH ACROSS THE SAN
FRANCISCO BAY AREA ON WEDNESDAY AFTERNOON AND WEDNESDAY NIGHT.
THIS SYSTEM WILL BRING A CHANCE OF THUNDERSTORMS TO THE BAY AREA
AS WELL AS LOCALLY STRONG AND GUSTY WEST TO NORTHWEST WINDS. THE
STRONGEST WINDS ARE EXPECTED TO OCCUR NEAR THE OCEAN FROM SONOMA
COUNTY SOUTH THROUGH SAN MATEO COUNTY.

CAZ505-192200-
/O.CON.KMTR.WI.Y.0005.070919T1900Z-070920T1000Z/
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
538 AM PDT WED SEP 19 2007

...WIND ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 3 AM PDT
THURSDAY...

A WIND ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 3 AM PDT
THURSDAY FOR THE COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL
SEASHORE.

NORTHWEST WINDS WERE BEGINNING TO INCREASE NEAR THE OCEAN EARLY WEDNESDAY
MORNING. WINDS WILL CONTINUE TO INCREASE THROUGH THE MORNING AND
BY MIDDAY WIND SPEEDS OF 20 TO 30 MPH WITH GUSTS TO 45 MPH ARE
EXPECTED TO DEVELOP. STRONG AND GUSTY WINDS WILL CONTINUE INTO
WEDNESDAY EVENING THEN DECREASE SHORTLY AFTER MIDNIGHT WEDNESDAY NIGHT.

A WIND ADVISORY MEANS THAT WIND GUSTS AS HIGH AS 45 MPH ARE
EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY
FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION IF TRAVELING NEAR THE
OCEAN TODAY.

$$

CAZ006-509-192200-
/O.CON.KMTR.WI.Y.0005.070919T1900Z-070920T1000Z/
SAN FRANCISCO-SAN FRANCISCO PENINSULA COAST-
538 AM PDT WED SEP 19 2007

...WIND ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 3 AM PDT
THURSDAY...

A WIND ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 3 AM PDT
THURSDAY FOR THE COAST OF THE SAN FRANCISCO PENINSULA...INCLUDING
THE CITY OF SAN FRANCISCO.

NORTHWEST WINDS WERE BEGINNING TO INCREASE NEAR THE OCEAN EARLY WEDNESDAY
MORNING. WINDS WILL CONTINUE TO INCREASE THROUGH THE MORNING AND
BY MIDDAY WIND SPEEDS OF 20 TO 30 MPH WITH GUSTS TO 45 MPH ARE
EXPECTED TO DEVELOP. STRONG AND GUSTY WINDS WILL CONTINUE INTO
WEDNESDAY EVENING THEN DECREASE SHORTLY AFTER MIDNIGHT WEDNESDAY NIGHT.

A WIND ADVISORY MEANS THAT WIND GUSTS AS HIGH AS 45 MPH ARE
EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY
FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION IF TRAVELING NEAR THE
OCEAN TODAY.

$$

DYKEMA
000 
WWUS76 KMTR 192102
NPWMTR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
202 PM PDT WED SEP 19 2007

...LOCALLY STRONG AND GUSTY NORTHWEST WINDS EXPECTED THIS
AFTERNOON AND TONIGHT...

.A STRONG AUTUMN LIKE STORM SYSTEM WILL MOVE SOUTH ACROSS THE SAN
FRANCISCO BAY AREA THIS AFTERNOON AND TONIGHT. THIS SYSTEM WILL
BRING LOCALLY STRONG AND GUSTY WEST TO NORTHWEST WINDS. THE STRONGEST
WINDS ARE EXPECTED TO OCCUR NEAR THE OCEAN FROM SONOMA COUNTY
SOUTH THROUGH SAN MATEO COUNTY AS WELL AS THE NORTH AND EAST BAY
HILLS.

CAZ507-511-201000-
/O.EXA.KMTR.WI.Y.0005.000000T0000Z-070920T1000Z/
NORTH BAY MOUNTAINS-EAST BAY HILLS AND DIABLO RANGE-
202 PM PDT WED SEP 19 2007

...WIND ADVISORY IN EFFECT UNTIL 3 AM PDT THURSDAY...

THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 3 AM PDT THURSDAY. 

NORTHWEST WINDS WERE INCREASING IN THE HILLS THIS AFTERNOON.
WINDS WILL CONTINUE TO INCREASE THROUGH THE REMAINDER OF THE
AFTERNOON AND REACH SPEEDS OF 20 TO 30 MPH WITH GUSTS TO 45 MPH.
STRONG AND GUSTY WINDS WILL CONTINUE INTO WEDNESDAY EVENING THEN
DECREASE SHORTLY AFTER MIDNIGHT WEDNESDAY NIGHT.

A WIND ADVISORY MEANS THAT WIND GUSTS AS HIGH AS 45 MPH ARE
EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...
ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION IF
TRAVELING IN THE HILLS THE REMAINDER OF THE AFTERNOON AND TONIGHT.

$$

CAZ006-505-509-201000-
/O.CON.KMTR.WI.Y.0005.000000T0000Z-070920T1000Z/
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-
202 PM PDT WED SEP 19 2007

...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT THURSDAY...

A WIND ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT THURSDAY. 

NORTHWEST WINDS ARE INCREASING NEAR THE OCEAN THIS AFTERNOON.
WINDS WILL CONTINUE TO INCREASE TO 20 TO 35 MPH WITH GUSTS TO 45
MPH BY LATE AFTERNOON. STRONG AND GUSTY WINDS WILL CONTINUE INTO WEDNESDAY
EVENING THEN DECREASE SHORTLY AFTER MIDNIGHT WEDNESDAY NIGHT.

A WIND ADVISORY MEANS THAT WIND GUSTS AS HIGH AS 45 MPH ARE
EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...
ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION IF
TRAVELING NEAR THE OCEAN THE REMAINDER OF THE AFTERNOON AND
TONIGHT.

$$

STROBIN
000 
WWUS76 KMTR 200446
NPWMTR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
946 PM PDT WED SEP 19 2007

CAZ006-505-507-509-511-200600-
/O.CAN.KMTR.WI.Y.0005.000000T0000Z-070920T1000Z/
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
NORTH BAY MOUNTAINS-SAN FRANCISCO PENINSULA COAST-
EAST BAY HILLS AND DIABLO RANGE-
946 PM PDT WED SEP 19 2007

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS CANCELLED THE
WIND ADVISORY FOR PORTIONS OF THE BAY AREA AND COAST.

WINDS HAVE DECREASED WELL BELOW ADVISORY CRITERIA AND ARE EXPECTED
TO REMAIN GENERALLY LIGHT THROUGH THE NIGHT.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 18, 3:00 PM PDTMarine Weather StatementMTR38 hr

Nearby

Wind Advisories in California, 2007Every wind advisory in 2007

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.