Alert archive / Washington / Wind Advisories in 2011

Wind Advisory 5, NWS Seattle, WA

February 14, 2011San Juan County, Washington

NWS Seattle, WA issued this wind advisory at Feb 14, 2011, 2:39 PM PST for San Juan County, Washington. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Feb 14, 2011, 2:39 PM PST (22:39 UTC)
Expired
Feb 14, 2011, 9:00 PM PST
In force
6 hr
Issued by
NWS Seattle, WA

County San Juan County, WA

The radar

The Seattle radar (KATX), 54 km from the middle of the area, began a volume at 22:40 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

Quillayute State, WA (KUIL), launched 12:00Z, 10.7 hours before the alert went out and 127 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, Quillayute State, WA at 12:00Z on 2011-02-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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, Quillayute State, WA at 12:00Z on 2011-02-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 210 square meters per square second.1939587897117Sfc1 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
474 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
210 m²/s²
0-3 km storm-relative helicity
231 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.

194 
WWUS76 KSEW 142239
NPWSEW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
239 PM PST MON FEB 14 2011

.WINDS ALONG THE COAST WILL GRADUALLY DIMINISH THIS EVENING AS A
COLD FRONT MOVES INLAND. WHILE WINDY CONDITIONS ARE EXPECTED THIS
EVENING AHEAD OF THE COLD FRONT IN THE NORTH INTERIOR...STRONG AND
DAMAGING WINDS ARE NO LONGER EXPECTED.

WAZ001-503-506-510-150500-
/O.CAN.KSEW.HW.W.0003.000000T0000Z-110215T0800Z/
/O.NEW.KSEW.WI.Y.0005.110214T2239Z-110215T0500Z/
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-WESTERN SKAGIT COUNTY-
ADMIRALTY INLET AREA-
239 PM PST MON FEB 14 2011

...WIND ADVISORY IN EFFECT UNTIL 9 PM PST THIS EVENING FOR THE
NORTHERN INTERIOR OF WESTERN WASHINGTON...
...HIGH WIND WARNING IS CANCELLED FOR THIS AREA.

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WIND
ADVISORY FOR THE NORTHERN INTERIOR OF WESTERN WASHINGTON...WHICH
IS IN EFFECT UNTIL 9 PM PST THIS EVENING. THE HIGH WIND WARNING
FOR THIS AREA HAS BEEN CANCELLED.

* SOME AFFECTED LOCATIONS...THE SAN JUAN ISLANDS...WESTERN WHATCOM
  AND SKAGIT COUNTIES...WHIDBEY ISLAND...CAMANO ISLAND... THE
  ADMIRALTY INLET AREA.

* INCLUDING THE CITIES OF FRIDAY HARBOR...BELLINGHAM... 
  BURLINGTON...ANACORTES...OAK HARBOR...COUPEVILLE AND PORT 
  TOWNSEND.

* WINDS...SOUTHEAST WINDS OF 25 TO 35 MPH WITH LOCAL GUSTS TO 55
  MPH.

* TIMING...WINDY CONDITIONS ARE EXPECTED EARLY THIS EVENING UNTIL
  A COLD FRONT IN THE COASTAL WATERS MOVES THROUGH THE AREA. WINDS
  WILL DIMINISH TO SOUTHEAST 10 TO 20 MPH BY MIDNIGHT TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY IS ISSUED WHEN SUSTAINED WINDS OF 30 TO 39 MPH OR
GUSTS OF 45 TO 57 MPH ARE LIKELY. WINDS THIS STRONG CAN SNAP
SMALL TREE BRANCHES...TOPPLE SMALL OR SHALLOW-ROOTED TREES...AND
CAUSE LOCAL POWER OUTAGES.

&&

$$

WAZ516-517-142345-
/O.CAN.KSEW.HW.W.0003.000000T0000Z-110215T0800Z/
NORTH COAST-CENTRAL COAST-
239 PM PST MON FEB 14 2011

...HIGH WIND WARNING IS CANCELLED FOR THE NORTH AND CENTRAL
WASHINGTON COAST...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS CANCELLED THE HIGH
WIND WARNING FOR THE THE NORTH AND CENTRAL WASHINGTON COAST.

A COLD FRONT HAS MOVED ONSHORE THIS AFTERNOON. WHILE WINDY
CONDITIONS WILL CONTINUE THIS EVENING WITH SOUTH WINDS OF 20 TO 30
MPH AND GUSTS TO 45 MPH...STRONG AND DAMAGING WINDS ARE NO LONGER
EXPECTED.

$$

ALBRECHT
WWW.WEATHER.GOV/SEATTLE

The office that day

Everything else NWS Seattle, WA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 13, 9:09 PM PSTGale WarningSEW27 hr
Feb 13, 9:09 PM PSTStorm WarningSEW18 hr
Feb 14, 4:00 AM PSTFlood WatchSEWMason10 hr
Feb 14, 4:00 AM PSTHigh Wind WarningSEWSan Juan11 hr
Feb 14, 4:00 AM PSTWinter Weather AdvisorySEW11 hr
Feb 14, 1:54 PM PSTRiver Flood AdvisorySEWMason22 hr

Nearby

Wind Advisories in Washington, 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.