Alert archive / Washington / Wind Advisories in 2011

Wind Advisory 14, NWS Spokane, WA

December 30, 20116 counties in Washington

NWS Spokane, WA issued this wind advisory at Dec 30, 2011, 9:42 PM PST for 6 counties in Washington. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Dec 30, 2011, 9:42 PM PST (05:42 UTC)
Expired
Dec 31, 2011, 3:28 AM PST
In force
6 hr
Issued by
NWS Spokane, WA

Counties Adams County, WA, Chelan County, WA, Douglas County, WA, Grant County, WA, Lincoln County, WA, Okanogan County, WA

The radar

The Spokane radar (KOTX), 134 km from the middle of the area, began a volume at 05:45 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

Spokane, WA (KOTX), launched 00:00Z, 5.7 hours before the alert went out and 226 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, Spokane, WA at 00:00Z on 2011-12-31Temperature 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, Spokane, WA at 00:00Z on 2011-12-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
1106 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
116 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.

496 
WWUS76 KOTX 310542
NPWOTX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SPOKANE WA
942 PM PST FRI DEC 30 2011

...GUSTY WINDS OVERNIGHT...

.A SYSTEM HAS MOVED EAST OF THE AREA LEAVING UNSTABLE CONDITIONS
IN ITS WAKE. THIS HAS ALLOWED MUCH HIGHER WIND SPEEDS ALOFT TO
SURFACE FROM WENATCHEE EASTWARD ACROSS THE WATERVILLE PLATEAU AND
INTO THE UPPER COLUMBIA BASIN. WIND GUSTS WILL BE PERIODICALLY
VERY STRONG THROUGH THE REST OF THE EVENING AND OVERNIGHT.

WAZ035-041-044-311200-
/O.NEW.KOTX.WI.Y.0014.111231T0542Z-111231T1200Z/
UPPER COLUMBIA BASIN-WENATCHEE AREA-WATERVILLE PLATEAU-
INCLUDING THE CITIES OF...RITZVILLE...GRAND COULEE...ODESSA...
WILBUR...COULEE CITY...WENATCHEE...CHELAN...ENTIAT...CASHMERE...
WATERVILLE...MANSFIELD
942 PM PST FRI DEC 30 2011

...WIND ADVISORY IN EFFECT UNTIL 4 AM PST SATURDAY...

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 4 AM PST SATURDAY.

* WINDS...WEST 20 TO 35 MPH WITH GUSTS UP TO 45 MPH. A FEW SPOTS
  ON THE WATERVILLE PLATEAU MAY HAVE HIGHER GUSTS AS WELL.

* TIMING...THROUGH THE EVENING AND OVERNIGHT.

* IMPACTS...HIGH PROFILE VEHICLES MAY EXPERIENCE PROBLEMS DRIVING
  IN THE WIND...AND LIGHT OBJECTS MAY BE BLOWN AWAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 30 TO 40 MPH ARE EXPECTED.
WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR
HIGH PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$
1 follow-up statement
851 
WWUS76 KOTX 311128
NPWOTX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SPOKANE WA
328 AM PST SAT DEC 31 2011


WAZ035-041-044-311230-
/O.CAN.KOTX.WI.Y.0014.000000T0000Z-111231T1200Z/
UPPER COLUMBIA BASIN-WENATCHEE AREA-WATERVILLE PLATEAU-
INCLUDING THE CITIES OF...RITZVILLE...GRAND COULEE...ODESSA...
WILBUR...COULEE CITY...WENATCHEE...CHELAN...ENTIAT...CASHMERE...
WATERVILLE...MANSFIELD
328 AM PST SAT DEC 31 2011

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS CANCELLED THE WIND
ADVISORY. BREEZY CONDITIONS WILL CONTINUE THIS MORNING...BUT THE
THREAT FOR UNUSUALLY STRONG GUSTS HAS SUBSIDED.



$$

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.