Alert archive / Washington / Wind Advisories in 2014

Wind Advisory 9, NWS Seattle, WA

February 19, 2014San Juan County, Washington

NWS Seattle, WA issued this wind advisory at Feb 19, 2014, 3:25 AM PST for San Juan County, Washington. It took effect at Feb 19, 2014, 6:00 PM PST. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Feb 19, 2014, 3:25 AM PST (11:25 UTC)
In effect from
Feb 19, 2014, 6:00 PM PST
Expired
Feb 19, 2014, 10:07 PM PST
In force
4 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 11:28 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 00:00Z, 11.4 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 00:00Z on 2014-02-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 59 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2014-02-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -42 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
59 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
717 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
-42 m²/s²
0-3 km storm-relative helicity
9 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

158 
WWUS76 KSEW 191125
NPWSEW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
325 AM PST WED FEB 19 2014

WAZ001-503-506-510-200030-
/O.NEW.KSEW.WI.Y.0009.140220T0200Z-140220T1100Z/
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-WESTERN SKAGIT COUNTY-
ADMIRALTY INLET AREA-
325 AM PST WED FEB 19 2014

...WIND ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 3 AM PST
THURSDAY...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 3 AM PST
THURSDAY. 

* SOME AFFECTED LOCATIONS...THE NORTH INTERIOR OF WESTERN
  WASHINGTON INCLUDING WESTERN WHATCOM COUNTY...WESTERN SKAGIT
  COUNTY...WHIDBEY ISLAND...THE SAN JUAN ISLANDS.

* TIMING...THE PERIOD OF STRONGEST WINDS WILL PROBABLY OCCUR LATE
  THIS EVENING.

* WIND...SOUTH 20 TO 35 MPH WITH GUSTS TO 50 MPH.

* IMPACTS...WINDS COULD SNAP SMALL TREE BRANCHES...TOPPLE SMALL 
  OR SHALLOW ROOTED TREES...AND CAUSE LOCAL POWER OUTAGES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY IS ISSUED WHEN SUSTAINED WINDS OF 30 TO 39 MPH
AND/OR GUSTS OF 45 TO 57 MPH ARE LIKELY.

&&

$$
2 follow-up statements
060 
WWUS76 KSEW 192341
NPWSEW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
341 PM PST WED FEB 19 2014

WAZ001-503-506-510-201100-
/O.CON.KSEW.WI.Y.0009.140220T0200Z-140220T1100Z/
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-WESTERN SKAGIT COUNTY-
ADMIRALTY INLET AREA-
341 PM PST WED FEB 19 2014

...WIND ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 3 AM
PST THURSDAY...

* SOME AFFECTED LOCATIONS...THE NORTH INTERIOR OF WESTERN 
  WASHINGTON INCLUDING WESTERN WHATCOM COUNTY...WESTERN SKAGIT 
  COUNTY...WHIDBEY ISLAND...THE SAN JUAN ISLANDS. 

* TIMING...THE STRONGEST WINDS ARE EXPECTED BETWEEN 9 PM AND 3 AM. 

* WIND...SOUTH 20 TO 35 MPH WITH GUSTS TO 40 TO 50 MPH.

* IMPACTS...WINDS COULD SNAP SMALL TREE BRANCHES...TOPPLE SMALL 
  OR SHALLOW ROOTED TREES...AND CAUSE LOCAL POWER OUTAGES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY IS ISSUED WHEN SUSTAINED WINDS OF 30 TO 39 MPH
AND/OR GUSTS OF 45 TO 57 MPH ARE LIKELY.

&&

$$
479 
WWUS76 KSEW 200607
NPWSEW

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
1007 PM PST WED FEB 19 2014

WAZ001-503-506-510-200715-
/O.CAN.KSEW.WI.Y.0009.000000T0000Z-140220T1100Z/
SAN JUAN COUNTY-WESTERN WHATCOM COUNTY-WESTERN SKAGIT COUNTY-
ADMIRALTY INLET AREA-
1007 PM PST WED FEB 19 2014

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SEATTLE HAS CANCELLED THE WIND
ADVISORY. BREEZY CONDITIONS WILL DEVELOP LATE TONIGHT INTO EARLY
THURSDAY MORNING BUT NOT MEET ADVISORY CRITERIA. 

$$

WWW.WEATHER.GOV/SEATTLE

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 19, 2:39 AM PSTGale WarningSEW30 hr
Feb 19, 3:35 AM PSTWinter Weather AdvisorySEW35 hr
Feb 19, 3:24 PM PSTSmall Craft AdvisorySEW42 hr

Nearby

Wind Advisories in Washington, 2014Every wind advisory in 2014

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.