Washington, 2011

High Wind and Strong Wind in Washington, November 21 to 22, 2011

November 21 to 22, 2011 · NWS SEW · 6 events in 6 counties and zones

High wind occurred over the coast and northwest interior.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
1
Injuries
1
Property damage
$105,000
Crop damage
None recorded
Events
6

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS SEW wrote it up.

High wind occurred over the coast and northwest interior.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Seattle, WA wrote its last area forecast discussion before the first event at Nov 21, 9:00 PM PST, 2 hours 16 minutes earlier.

Area forecast discussion, Nov 21, 9:00 PM PST, 2 hours 16 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SEATTLE WA
900 PM PST MON NOV 21 2011

.SYNOPSIS...WET AND UNSETTLED CONDITIONS WILL PERSIST THROUGH
WEDNESDAY DUE TO A VERY MOIST FRONTAL BOUNDARY STALLING OVER THE
AREA.  IN ADDITION TO LOCALLY HEAVY PRECIPITATION...ANTICIPATE
STRONG WINDS ACROSS MUCH OF THE AREA OVERNIGHT INTO TUESDAY MORNING.
A COLDER PACIFIC STORM IS EXPECTED TO BEGIN IMPACTING THE REGION
ON THURSDAY.

&&

.SHORT TERM...A DEEP 975 MB LOW PRESSURE CENTER JUST WEST OF THE
NORTH TIP OF VANCOUVER ISLAND WILL CONTINUE TO MOVE NORTH-NORTHEAST
THROUGH THE NIGHT WITH AN ASSOCIATED COLD FRONT APPROACHING THE
REGION.  SIGNIFICANT RAIN IN ADVANCE OF THE FRONT IS SPREADING
ACROSS THE REGION WHILE THE FREEZING LEVEL CONTINUES TO SLOWLY
RISE.  THIS FRONT IS EXPECTED TO PRETTY MUCH STALL OVER THE AREA
INTO WEDNESDAY AS SEVERAL WAVES RIPPLE ALONG IT.  THE RESULT WILL BE
RAIN THROUGH THE PERIOD...HEAVY AT TIMES.  THERE WILL BE SOME AMOUNT
OF NORTH TO SOUTH WIGGLE TO THE STALLED FRONT DURING THIS
TIME...WHICH WILL SHIFT THE AREA OF HEAVIEST RAIN AROUND A BIT.

CONCERNING THE PRECIPITATION IN THE MOUNTAINS...IT WILL FALL
AS SNOW IN THE CENTRAL CASCADE PASSES TONIGHT BUT WILL QUICKLY
CHANGE OVER TO RAIN TUESDAY MORNING IN RESPONSE TO MILD...WESTERLY
FLOW PUSHING THROUGH THE PASSES WHERE A WINTER WEATHER ADVISORY IS
IN EFFECT.  THE SNOW LEVEL WILL RISE QUICKLY OVERNIGHT OVER THE
OLYMPICS RESULTING IN SUB-WARNING ACCUMULATIONS SO AN ADVISORY IS IN
EFFECT THERE.  THE COLD AIR WILL LINGER LONGER OVER THE NORTH
CASCADES WHERE 1 TO 2 FEET OF SNOW IS LIKELY BY LATE TUESDAY...WHERE
A WINTER STORM WARNING IS IN EFFECT.

THE OTHER SIGNIFICANT ISSUE WITH THE FRONT...MAINLY THROUGH THE NEXT
18 HOURS IS THE STRONG WINDS.  THE COAST AND PORTIONS OF THE
NORTHWEST INTERIOR WILL SEE SUSTAINED WINDS IN THE 30S TO MID 40S
WITH GUSTS 55 TO 65 MPH DEPENDING ON LOCATION.  THESE AREAS HAVE A
HIGH WIND WARNING IN EFFECT.  THE REMINDER OF THE AREA IS UNDER A
WIND ADVISORY AS WINDS WILL BE NOT QUITE AS STRONG WITH SUSTAINED
SPEEDS IN THE 15 TO 30 MPH RANGE AND GUSTS INTO THE MID 40S.

EXPECT THE BAROCLINIC ZONE TO WEAKEN WEDNESDAY NIGHT...WITH THE
FOCUS OF THE HEAVIEST PRECIPITATION SHIFTING SOUTH OF THE FORECAST
AREA BY THURSDAY MORNING.  THEN A COLDER SYSTEM WILL BEGIN TO IMPACT
THE REGION THURSDAY AFTERNOON.  IF THIS SYSTEM ENDS UP AS WET AS THE
MODELS ARE ADVERTISING...A WINTER STORM WATCH WILL BE NEEDED FOR THE
MOUNTAINS THURSDAY AFTERNOON AND NIGHT.  CERNIGLIA

.LONG TERM...THE THURSDAY SYSTEM MENTIONED ABOVE WILL MOVE EAST OF
THE CASCADES THURSDAY NIGHT LEAVING BEHIND A BIT OF SHOWER ACTIVITY
IN ITS WAKE.  BEHIND THAT ANOTHER RATHER JUICY SYSTEM BEGINS TO TAKE
AIM AT THE PACIFIC NORTHWEST REGION.  THE WARM FRONT PASSES
NORTHEAST THROUGH THE REGION SATURDAY WITH A PERIOD OF RAIN THEN THE
COLD FRONT SLOWLY MOVES THROUGH ON SUNDAY.  THE MODELS INDICATE THAT
THERE WILL BE A PERIOD OF TIME WHERE THE FRONT WILL BE STALLED...BUT
AT THE MOMENT THIS IS OCCURRING ACROSS VANCOUVER ISLAND.  THIS IS A
GOOD 5 DAYS OUT AND IT WILL NEED TO BE WATCHED CLOSELY AS IT WILL
LIKELY LOOK A BIT DIFFERENT AS WE GET CLOSER.  AFTER A SHORT BREAK
IN THE WEATHER THIS WILL BE FOLLOWED BY ANOTHER COLDER SYSTEM AROUND
NEXT TUESDAY.  WILL BE A BUSY WEEK.  CERNIGLIA

&&

.HYDROLOGY...THERE ARE TWO FRONTAL SYSTEMS PRESENTING A THREAT OF
FLOODING ON WESTERN WASHINGTON RIVERS IN THE SHORT TERM. THE FIRST
SYSTEM WILL MOVE THROUGH THE AREA TONIGHT AND TUESDAY...BRINGING
PRECIPITATION AMOUNTS OF 2 TO 6 INCHES TO THE MOUNTAINS. SOME MODEL
RUNS HAVE SHOWN SLIGHTLY HEAVIER BULLSEYES...BUT THIS RANGE LOOKS
REPRESENTATIVE FOR THE 24 HR EVENT. SNOW LEVELS WILL RISE TO 5000 TO
6000 FT. THE HEAVIEST AMOUNTS WILL BE OVER THE OLYMPIC MOUNTAINS --
ALSO WHERE THE SNOW LEVEL WILL RISE FIRST -- WITH A SECONDARY FOCUS
OVER THE CENTRAL AND SOUTHERN CASCADES AND THE SOUTHWEST PART OF
WESTERN WASHINGTON.

THE SECOND FRONTAL WAVE WILL MOVE THROUGH TUESDAY NIGHT AND
WEDNESDAY...WITH ANOTHER 1 TO 4 INCHES OF PRECIPITATION. THE SNOW
LEVEL WILL BE IN THE 3000 TO 4000 FT RANGE. THERE IS MORE
UNCERTAINTY ABOUT THE FOCUS OF HEAVIEST PRECIPITATION FOR THE SECOND
WAVE...AS MODELS HAVE BEEN SOMEWHAT INCONSISTENT. MOST LIKELY
THOUGH...IT WILL BE SIMILAR TO THE FIRST WAVE.

AT THIS TIME...THE SCENARIO APPEARS TO PRESENT A THREAT OF FLOODING
FOR ONLY THE MOST FLOOD-PRONE RIVERS OF WESTERN WASHINGTON. AND --
WITH THE POSSIBLE EXCEPTION OF THE SKOKOMISH RIVER -- THE FLOODING
THAT DOES OCCUR SHOULD BE RELATIVELY MINOR.

THE FLOOD WATCH AREA HAS BEEN EXPANDED TO INCLUDE LEWIS AND THURSTON
COUNTIES...WHERE MINOR FLOODING IS POSSIBLE ON THE NEWAUKUM AND
CHEHALIS RIVERS. IT ALSO NOW INCLUDES PIERCE...KING AND SNOHOMISH
COUNTIES WITH MINOR FLOODING POSSIBLE ON THE PUYALLUP RIVER NEAR
ORTING...AND THE SNOQUALMIE AND STILLAGUAMISH RIVERS.

THE FLOOD WATCH REMAINS IN EFFECT FOR THE OLYMPIC PENINSULA. THE
SKOKOMISH RIVER WILL MOST LIKELY FLOOD. THE OTHER RIVER OF PRIMARY
CONCERN THERE IS THE ELWHA...IN PART DUE TO UNCERTAINTY IN ITS
BEHAVIOR SINCE THE DAMS THERE HAVE BEEN REMOVED RECENTLY.

FINALLY IT SHOULD BE NOTED THAT A SCENARIO LIKE THIS...WITH
PRECIPITATION ARRIVING IN MULTIPLE SYNOPTIC WAVES...DO LEAVE A
HIGHER DEGREE OF UNCERTAINTY. THE BOTTOM LINE THEN IS STAY TUNED FOR
UPDATES AND REVISIONS TO THE FORECAST. MCDONNAL

&&

.AVIATION...STRONG FRONTAL SYS MOVING SLOWLY THROUGH WRN WA
OVERNIGHT. DEEP MOISTURE AND RAIN WITH STRONG SSW WIND ALF. THE AIR
WILL BE STABLE TONIGHT THEN BECOME SOMEWHAT UNSTABLE BEHIND THE
FRONT TUE MORNING OVER THE NW PTN OF WA...BUT THE FNTL SYS WILL
PROBABLY HANG UP OVER NRN ORE AND THE SRN CASCADES SO WILL REMAIN
MOIST AND STABLE THERE THRU TUE. MAINLY MVFR CIGS AND VISIBILITIES
UNDER THE FRONTAL BAND...THEN IMPROVEMENT IS POSSIBLE NORTH OF A
LINE FROM HQM-SEA BY MIDDAY IF THE FRONTAL BAND SAGS SOUTH OVER
OREGON AND STAYS THERE. SW WINDS WILL RISE TO 50 KT AT 2000 FEET
TNGT WITH THE STRONGEST PART OF THE FRONT...AND THE WINDS AT 5000
FEET WILL REACH SW 75KT. BY MID MORNING THOSE STRONG WINDS
ASSOCIATED WITH THE FRONTAL BAND WILL BE OVER OREGON AND INTO ERN WA
AND MOST OF WRN WA WILL BE NORTH OF THE FRONT WITH MUCH LIGHTER
WINDS ALOFT. SO FOR TONIGHT...THESE STRONG WINDS ALF AND INCREASING
SFC PRES GRADIENT WILL INTERACTING WITH THE TERRAIN WILL CAUSE AREAS
OF WIND SHEAR WITH SFC GUSTS TO 50 KT NEAR THE COAST AND NORTH OF
EVERETT. 19

KSEA...CURRENT TAF LOOKS GOOD. THE FRONTAL BAND WILL SHIFT SOUTHEAST
OF SEATTLE ARND DAYBREAK...BUT RAIN BANDS WILL PROBABLY STILL LIFT
NORTH THROUGH THE METRO AREA AT TIMES.

&&

.MARINE...A 977MB LOW WILL CLIP NRN VANCOUVER ISLAND TONIGHT AND THE
STRONG ASSOCIATED FRONTAL SYSTEM WILL MOVE SLOWLY THROUGH WRN WA
OVERNIGHT. GALE TO STORM FORCE WINDS AND OVER THE COASTAL WATERS
SEAS WILL BUILD TO 20-25 FT LATER TONIGHT THROUGH TUE MORNING. THE
FRONTAL BAND AND STRONG PRESSURE GRADIENTS WILL SHIFT SOUTHEAST OF
THE WA WATERS TUESDAY AND ALTHOUGH A DISTURBANCE MOVES UP ALONG THE
FRONT THE FRONTAL BAND AND STRONG GRADIENTS ARE NOT FORECAST BY THE
NAM AND GFS TO LIFT BACK NORTH OVER WRN WA. SO THE WINDS WILL
DECREASE DRAMATICALLY BEHIND THE FRONT FOR WRN WA ON TUE WHILE
STRONG GRADIENTS STAY OVER THE OREGON COASTAL WATERS. THEN ON THU
ANOTHER STRONG FRONT WILL PUSH THROUGH THE REGION.  19

&&

.AVALANCHE...A STRONGER...WARMER...AND WETTER SYSTEM IS SET TO HIT
THE MOUNTAINS OVERNIGHT THROUGH TUESDAY NIGHT...WITH SIGNIFICANT
WATER AT RISING FREEZING LEVELS AND VERY STRONG WINDS. THIS WEATHER
SHOULD TIP THE BALANCE IN THE CURRENTLY FRAGILE SNOWPACK. EARLY COLD
LOW DENSITY SNOW AND A VARIETY OF WEAK LAYERS SHOULD BE NO MATCH FOR
WHAT'S COMING. WIDESPREAD NATURAL AVALANCHES ARE CERTAIN AND SOME
LARGE AND VERY DANGEROUS SLIDES POSSIBLE...ESPECIALLY IN AREAS NEAR
AND WEST OF THE CREST, THE OLYMPICS, THE VOLCANOES AND THE NORTHEAST
CASCADES ABOVE ABOUT 5000 FEET WHERE A DEEPER EARLY SEASON SNOWPACK
EXISTS. AN AVALANCHE WARNING IS IN EFFECT WITH THE AVALANCHE DANGER
LEVEL EXPECTED TO RISE TO EXTREME...THE HIGHEST LEVEL IN MANY AREAS
OVERNIGHT AND TUESDAY. AVALANCHE TERRAIN SHOULD BE AVOIDED THROUGH
TUESDAY IN THESE AREAS. MORE DETAILS AT NWAC.US
KRAMER

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...HIGH WIND WARNING UNTIL NOON PST TUESDAY
     FOR THE COAST...OLYMPICS...AND NORTHWEST INTERIOR.

     WINTER STORM WARNING ABOVE 3500 FEET UNTIL 6 PM PST TUESDAY
     FOR THE WEST SLOPES OF THE NORTH CASCADES.

     WIND ADVISORIES ARE IN EFFECT FOR THE REST OF THE LOWLANDS
     UNTIL NOON PST TUESDAY.

     WINTER WEATHER ADVISORY ABOVE 4000 FEET UNTIL 6 AM PST TUESDAY
     FOR THE OLYMPICS AND CENTRAL CASCADES.

     FLOOD WATCHES ARE IN EFFECT FOR MUCH OF THE AREA FROM TUESDAY
     MORNING THROUGH LATE WEDNESDAY NIGHT.

PZ...STORM WARNINGS ARE IN EFFECT UNTIL NOON PST TUESDAY FOR THE
     COASTAL WATERS...EAST ENTRANCE TO THE STRAIT OF JUAN DE
     FUCA...AND THE NORTHERN INLAND WATERS.

     GALE WARNINGS ARE IN EFFECT UNTIL NOON PST TUESDAY FOR THE
     REMAINING WATERS.

     SMALL CRAFT ADVISORY FOR ROUGH BAR UNTIL 4 AM PST WEDNESDAY
     FOR THE GRAYS HARBOR BAR.

&&

WWW.WEATHER.GOV/SEATTLE

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

5 high wind, 1 strong wind. Local standard time, as filed.

High Wind, San Juan

When
November 21, 11:16 PM PST to November 22, 3:16 AM PST
Where
San Juan forecast zone
Measured
37 kt (43 mph) measured sustained
Reported by
Mesonet
Coordinates
48.531, -123.025 (the zone’s center; the record gives no point)

Observations on Lopez Island and Decatur Island reached the high wind category of 40 mph sustained and/or gusts of at least 58 mph.

High Wind, Western Whatcom County

When
November 21, 11:30 PM PST to November 22, 4:00 AM PST
Where
Western Whatcom County forecast zone
Measured
41 kt (47 mph) measured sustained
Property damage
$5,000
Reported by
ASOS

Bellingham, Cherry Point, and Ferndale all recorded high wind category winds of 40 mph sustained and/or gust 58 mph. In Birch Bay, the strong winds blew part of the roof off a manufactured home.

High Wind, North Coast

When
November 22, 12:00 AM PST to 2:10 AM PST
Where
North Coast forecast zone
Measured
50 kt (58 mph) measured gust
Reported by
C-MAN Station

Tatoosh Island recorded gusts of 50 KT or higher.

High Wind, Admiralty Inlet Area

When
November 22, 12:54 AM PST to 3:00 AM PST
Where
Admiralty Inlet Area forecast zone
Measured
38 kt (44 mph) measured sustained
Reported by
ASOS

Naval Air Station Whidbey Island (KNUW) recorded 44 mph sustained wind.

Strong Wind, Everett and Vicinity

When
November 22, 3:00 AM PST to 9:00 AM PST
Where
Everett and Vicinity forecast zone
Measured
39 kt (45 mph) measured gust
Property damage
$50,000
Reported by
Newspaper

About 7000 homes lost power in Snohomish county as tree limbs downed power lines.

High Wind, Central Coast

When
November 22, 3:43 AM PST to 5:45 AM PST
Where
Central Coast forecast zone
Measured
39 kt (45 mph) measured sustained
Deaths
1 direct, 0 indirect
Injuries
0 direct, 1 indirect
Property damage
$50,000
Reported by
ASOS

Hoquiam recorded 45 mph sustained wind. A Central Park man was killed by a falling tree when he walked out onto his open air porch. About 10,000 people in Grays Harbor county lost power. Trees were knocked down over roadways and one man was injured when a car he was driving hit a downed tree.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
High Wind, Central Coast2011-11-2274MaleOutside/Open AreasDirect

What these are

High Wind
Sustained non-thunderstorm winds of 40 mph or more for an hour, or gusts of 58 mph or more.
Strong Wind
Non-thunderstorm winds below high wind criteria that nonetheless caused damage or casualties.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Washington in 2011Every state in 2011This day in weather historyWarnings in Washington, November 2011

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 350651, 350649, 350653, 350650, 353128, 350654.