Alert archive / Washington / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 10, NWS Spokane, WA

June 23, 2012Garfield County, Whitman County, Washington

NWS Spokane, WA issued this severe thunderstorm warning at Jun 23, 2012, 3:05 PM PDT for Garfield County, Whitman County, Washington. It was in force for 55 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 23, 2012, 3:05 PM PDT (22:05 UTC)
Expired: Jun 23, 2012, 4:00 PM PDT
In force: 55 min
Issued by: NWS Spokane, WA
Area: Storm-based polygon

Counties Garfield County, WA, Whitman County, WA

The radar

The Spokane radar (KOTX), 118 km from the middle of the area, began a volume at 22:05 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.

What was reported inside it

Time	Report	Where	Remark
Jun 23, 3:15 PM PDT	HAIL 0.88	13 Nw Pomeroy, WA	PUBLIC REPORT
Jun 23, 3:24 PM PDT	HAIL 0.5	12 Sse La Crosse, WA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 10.1 hours before the alert went out and 156 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 779 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

325 
WUUS56 KOTX 232205
SVROTX
WAC023-075-232300-
/O.NEW.KOTX.SV.W.0010.120623T2205Z-120623T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPOKANE WA
305 PM PDT SAT JUN 23 2012

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL WHITMAN COUNTY IN EASTERN WASHINGTON...
  NORTHWESTERN GARFIELD COUNTY IN SOUTHEAST WASHINGTON...

* UNTIL 400 PM PDT

* AT 257 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
  SOUTHWEST OF DODGE...OR 34 MILES NORTHEAST OF WALLA WALLA...AND
  MOVING NORTHEAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  DODGE...HAY...LA CROSSE...MAYVIEW...DUSTY...WINONA...ENDICOTT...
  EWEN...DIAMOND...COLFAX AND ALBION

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

DAMAGING WINDS UP TO 60 MPH WERE REPORTED IN WAITSBURG WITH THIS 
STORM. THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND STAY AWAY 
FROM WINDOWS!

HAIL UP TO HALF DOLLARS IN DIAMETER HAS BEEN REPORTED IN WAITSBURG
WITH THIS STORM. IF YOU ARE IN THE PATH OF THE STORM...TAKE 
IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.

&&

LAT...LON 4646 11775 4646 11786 4648 11787 4661 11787
      4658 11789 4658 11801 4659 11802 4720 11787
      4683 11703 4681 11704 4643 11771
TIME...MOT...LOC 2203Z 214DEG 29KT 4649 11786

$$

SB

3 follow-up statements

931 
WWUS56 KOTX 232229
SVSOTX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
329 PM PDT SAT JUN 23 2012

WAC023-075-232300-
/O.CON.KOTX.SV.W.0010.000000T0000Z-120623T2300Z/
WHITMAN WA-GARFIELD WA-
329 PM PDT SAT JUN 23 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM PDT
FOR NORTHWESTERN GARFIELD AND CENTRAL WHITMAN COUNTIES...

AT 327 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE 
HAIL...AND DAMAGING WINDS NEAR 60 MPH.  THIS STORM WAS LOCATED 10 
MILES EAST OF HAY...OR 26 MILES WEST OF PULLMAN...MOVING NORTHEAST 
AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LA
CROSSE...DUSTY...WINONA...ENDICOTT...EWEN...DIAMOND...COLFAX AND
ALBION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!

&&

LAT...LON 4658 11777 4663 11793 4720 11787 4681 11705
      4675 11715
TIME...MOT...LOC 2229Z 214DEG 29KT 4666 11769

$$

SB

607 
WWUS56 KOTX 232248
SVSOTX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
348 PM PDT SAT JUN 23 2012

WAC023-232258-
/O.CAN.KOTX.SV.W.0010.000000T0000Z-120623T2300Z/
GARFIELD WA-
348 PM PDT SAT JUN 23 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN GARFIELD COUNTY
IS CANCELLED...

LAT...LON 4671 11768 4675 11790 4720 11787 4685 11714
      4682 11725
TIME...MOT...LOC 2248Z 214DEG 29KT 4679 11756

$$

WAC075-232300-
/O.CON.KOTX.SV.W.0010.000000T0000Z-120623T2300Z/
WHITMAN WA-
348 PM PDT SAT JUN 23 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM PDT
FOR CENTRAL WHITMAN COUNTY...

AT 344 PM PDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF 
PRODUCING NICKEL TO QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS 
OF 45 MPH.  THIS STORM WAS LOCATED NEAR DUSTY...OR 20 MILES WEST OF 
PULLMAN...MOVING NORTHEAST AT 35 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WINONA...ENDICOTT...EWEN...DIAMOND AND COLFAX.

LAT...LON 4671 11768 4675 11790 4720 11787 4685 11714
      4682 11725
TIME...MOT...LOC 2248Z 214DEG 29KT 4679 11756

$$

SB

823 
WWUS56 KOTX 232255
SVSOTX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
355 PM PDT SAT JUN 23 2012

WAC075-232305-
/O.EXP.KOTX.SV.W.0010.000000T0000Z-120623T2300Z/
WHITMAN WA-
355 PM PDT SAT JUN 23 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL WHITMAN COUNTY WILL
EXPIRE AT 400 PM PDT...

DOPPLER RADAR INDICATED THE STORM WAS NO LONGER SEVERE AND THE
WARNING WAS ALLOWED TO EXPIRE. 

LAT...LON 4671 11768 4675 11790 4720 11787 4685 11714
      4682 11725
TIME...MOT...LOC 2255Z 214DEG 29KT 4684 11751

$$

SB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 9:11 PM PDT	Areal Flood Advisory	OTX	Ferry, Pend Oreille, Stevens	3 hr
Jun 23, 9:08 AM PDT	Severe Thunderstorm Warning	OTX	Pend Oreille, Stevens	36 min
Jun 23, 9:11 AM PDT	Severe Thunderstorm Warning	OTX	Pend Oreille, Stevens	49 min
Jun 23, 10:10 AM PDT	Severe Thunderstorm Warning	OTX	Pend Oreille, Stevens	26 min
Jun 23, 11:09 AM PDT	Areal Flood Advisory	OTX	Pend Oreille	4 hr
Jun 23, 2:14 PM PDT	Special Weather Statement	OTX	Grant	46 min

Nearby

Severe Thunderstorm Warnings in Washington, 2012 Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.