Alert archive / Washington / Tornado Warnings in 2021

Tornado Warning 4, NWS Seattle, WA

November 9, 2021Kitsap County, Washington

NWS Seattle, WA issued this tornado warning at Nov 9, 2021, 11:40 AM PST for Kitsap County, Washington. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Nov 9, 2021, 11:40 AM PST (19:40 UTC)
Expired
Nov 9, 2021, 12:15 PM PST
In force
35 min
Issued by
NWS Seattle, WA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Kitsap County, WA

The radar

The Seattle radar (KATX), 66 km from the middle of the area, began a volume at 19:41 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, 7.7 hours before the alert went out and 137 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 2021-11-09Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Quillayute State, WA at 12:00Z on 2021-11-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 887 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
599 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
887 m²/s²
0-3 km storm-relative helicity
1203 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

902 
WFUS56 KSEW 091940
TORSEW
WAC035-092015-
/O.NEW.KSEW.TO.W.0004.211109T1940Z-211109T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Seattle WA
1140 AM PST Tue Nov 9 2021

The National Weather Service in Seattle has issued a

* Tornado Warning for...
  Central Kitsap County in northwestern Washington...

* Until 1215 PM PST
    
* At 1140 AM PST, a severe thunderstorm capable of producing a
  tornado was located near Seabeck, or 8 miles north of Belfair,
  moving northeast at 30 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught 
           without shelter. Mobile homes will be damaged or 
           destroyed. Damage to roofs, windows, and vehicles will 
           occur.  Tree damage is likely. 

* This dangerous storm will be near...
  Seabeck around 1150 AM PST. 
  Bremerton around 1155 AM PST. 

Other locations impacted by this tornadic thunderstorm include
Tracyton, Silverdale and Erlands Point-Kitsap Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4758 12295 4764 12284 4767 12275 4769 12274
      4773 12267 4770 12263 4765 12262 4763 12259
      4759 12260 4758 12266 4760 12266 4758 12267
      4755 12291
TIME...MOT...LOC 1940Z 245DEG 24KT 4757 12288 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

PULLIN

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 8, 10:15 PM PSTRiver Flood WarningSEWMason46 hr
Nov 9, 12:15 AM PSTGale WarningSEW20 hr
Nov 9, 12:15 AM PSTStorm WarningSEW7 hr
Nov 9, 1:50 AM PSTHigh Wind WarningSEWSan Juan8 hr
Nov 9, 4:04 AM PSTSpecial Weather StatementSEWClallam26 min
Nov 9, 6:29 AM PSTSpecial Weather StatementSEWIsland46 min
Nov 9, 7:17 AM PSTSpecial Weather StatementSEWSkagit, Whatcom28 min
Nov 9, 11:15 AM PSTSpecial Weather StatementSEWGrays Harbor45 min
Nov 9, 11:23 AM PSTSpecial Marine WarningSEW52 min
Nov 9, 11:59 AM PSTTornado WarningSEWKitsap17 min
Nov 9, 12:01 PM PSTSpecial Marine WarningSEW44 min
Nov 9, 12:24 PM PSTSpecial Weather StatementSEWMason51 min
Nov 9, 12:58 PM PSTSpecial Weather StatementSEWClallam32 min
Nov 9, 1:36 PM PSTSpecial Weather StatementSEWKitsap39 min
Nov 9, 1:52 PM PSTSpecial Weather StatementSEWGrays Harbor38 min
Nov 9, 2:00 PM PSTSevere Thunderstorm WarningSEWGrays Harbor, Mason30 min
Nov 9, 2:14 PM PSTSpecial Weather StatementSEWSnohomish46 min
Nov 9, 2:27 PM PSTSevere Thunderstorm WarningSEWMason, Thurston33 min
Nov 9, 2:38 PM PSTSpecial Weather StatementSEWKitsap37 min
Nov 9, 2:41 PM PSTSpecial Marine WarningSEW28 min
Nov 9, 2:50 PM PSTSpecial Weather StatementSEWGrays Harbor25 min

Nearby

Tornado Warnings in Washington, 2021Every tornado warning in 2021Tornadoes in 2021

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.