Alert archive / Washington / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 3, NWS Spokane, WA

June 4, 2012Asotin County, Garfield County, Whitman County, Washington

NWS Spokane, WA issued this severe thunderstorm warning at Jun 4, 2012, 3:23 PM PDT for Asotin County, Garfield County, Whitman County, Washington. It was in force for 51 min. 1 report 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 4, 2012, 3:23 PM PDT (22:23 UTC)
Expired: Jun 4, 2012, 4:14 PM PDT
In force: 51 min
Issued by: NWS Spokane, WA
Area: Storm-based polygon

Counties Asotin County, WA, Garfield County, WA, Whitman County, WA

The radar

The Pendleton radar (KPDT), 124 km from the middle of the area, began a volume at 22:25 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 4, 3:43 PM PDT	HAIL 1	14 Se Pomeroy, WA

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 4, 12:46 PM PDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 10.4 hours before the alert went out and 176 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: 5 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 663 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 112 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.

982 
WUUS56 KOTX 042223
SVROTX
WAC003-023-075-042330-
/O.NEW.KOTX.SV.W.0003.120604T2223Z-120604T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPOKANE WA
323 PM PDT MON JUN 4 2012

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A

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

* UNTIL 430 PM PDT

* AT 316 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 12
  MILES SOUTH OF PEOLA...OR 29 MILES SOUTHWEST OF CLARKSTON...AND
  MOVING NORTHEAST AT 30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  PEOLA...POMEROY AND MAYVIEW

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME ROTATION WITHIN THIS STORM. WHILE 
NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO 
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY 
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT PDT
TUESDAY MORNING FOR THE PANHANDLE AND NORTH CENTRAL IDAHO AND EASTERN
WASHINGTON.

&&

LAT...LON 4612 11762 4633 11762 4634 11767 4683 11772
      4646 11706 4604 11743
TIME...MOT...LOC 2223Z 210DEG 27KT 4618 11747

$$

JW

2 follow-up statements

589 
WWUS56 KOTX 042245
SVSOTX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
345 PM PDT MON JUN 4 2012

WAC003-023-075-042330-
/O.CON.KOTX.SV.W.0003.000000T0000Z-120604T2330Z/
WHITMAN WA-GARFIELD WA-ASOTIN WA-
345 PM PDT MON JUN 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM PDT
FOR NORTHWESTERN ASOTIN...NORTHERN GARFIELD AND SOUTHEASTERN WHITMAN
COUNTIES...

AT 335 PM PDT...THE PUBLIC REPORTED A SEVERE THUNDERSTORM PRODUCING 
QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS 
STORM WAS LOCATED NEAR PEOLA...OR 20 MILES WEST OF 
CLARKSTON...MOVING NORTHEAST AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO POMEROY
AND MAYVIEW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT PDT
TUESDAY MORNING FOR THE PANHANDLE AND NORTH CENTRAL IDAHO AND EASTERN
WASHINGTON.

&&

LAT...LON 4625 11739 4628 11755 4633 11762 4634 11767
      4683 11772 4646 11706
TIME...MOT...LOC 2244Z 210DEG 27KT 4637 11738

$$

JW

401 
WWUS56 KOTX 042314
SVSOTX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
414 PM PDT MON JUN 4 2012

WAC003-023-075-042324-
/O.CAN.KOTX.SV.W.0003.000000T0000Z-120604T2330Z/
WHITMAN WA-GARFIELD WA-ASOTIN WA-
414 PM PDT MON JUN 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ASOTIN...NORTHERN
GARFIELD AND SOUTHEASTERN WHITMAN COUNTIES IS CANCELLED...

THE SEVERE THUNDERSTORM THAT RESULTED IN QUARTER INCH HAIL SOUTHEAST 
OF POMEROY HAS EXITED THE WARNED AREA.  THUS THE SEVERE THUNDERSTORM 
WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT PDT
TUESDAY MORNING FOR THE PANHANDLE AND NORTH CENTRAL IDAHO AND EASTERN
WASHINGTON.

LAT...LON 4625 11739 4628 11755 4633 11762 4634 11767
      4683 11772 4646 11706
TIME...MOT...LOC 2314Z 210DEG 27KT 4651 11719

$$

JW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 1:34 PM PDT	Flash Flood Watch	OTX	Adams, Asotin, Douglas, Ferry, Garfield, Lincoln and 5 more	14 hr

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.