Alert archive / Washington / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 13, NWS Pendleton, OR

July 14, 2012Benton County, Klickitat County, Washington; Gilliam County, Morrow County, Oregon

NWS Pendleton, OR issued this severe thunderstorm warning at Jul 14, 2012, 7:07 PM PDT for Benton County, Klickitat County, Washington; Gilliam County, Morrow County, Oregon. It was in force for 34 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: Jul 14, 2012, 7:07 PM PDT (02:07 UTC)
Expired: Jul 14, 2012, 7:41 PM PDT
In force: 34 min
Issued by: NWS Pendleton, OR
Area: Storm-based polygon

Counties Gilliam County, OR, Morrow County, OR, Benton County, WA, Klickitat County, WA

The radar

The Pendleton radar (KPDT), 84 km from the middle of the area, began a volume at 02:07 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

Salem/Mcnary, OR (KSLE), launched 00:00Z, 2.1 hours before the alert went out and 263 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: 2044 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 36 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.

705 
WUUS56 KPDT 150207
SVRPDT
ORC021-049-WAC005-039-150300-
/O.NEW.KPDT.SV.W.0013.120715T0207Z-120715T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PENDLETON OR
707 PM PDT SAT JUL 14 2012

THE NATIONAL WEATHER SERVICE IN PENDLETON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL KLICKITAT COUNTY IN CENTRAL WASHINGTON...
  EXTREME NORTH CENTRAL GILLIAM COUNTY IN NORTH CENTRAL OREGON...
  NORTHWESTERN MORROW COUNTY IN NORTHEAST OREGON...
  EXTREME SOUTHWESTERN BENTON COUNTY IN SOUTH CENTRAL WASHINGTON...

* UNTIL 800 PM PDT

* AT 703 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM PRODUCING QUARTER SIZE HAIL.  THIS STORM WAS
  LOCATED NEAR ALDERDALE...OR 20 MILES WEST OF UMATILLA CHEMICAL
  DEPOT (MORROW COUNTY)...AND MOVING EAST AT 5 MPH.

* THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL
  AREAS OF THE INDICATED COUNTIES.

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.

LAT...LON 4595 11972 4567 11984 4577 12015 4595 12009
TIME...MOT...LOC 0206Z 282DEG 3KT 4584 11999

$$

GP

1 follow-up statement

045 
WWUS56 KPDT 150241
SVSPDT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PENDLETON OR
741 PM PDT SAT JUL 14 2012

ORC021-049-WAC005-039-150249-
/O.CAN.KPDT.SV.W.0013.000000T0000Z-120715T0300Z/
BENTON WA-MORROW OR-KLICKITAT WA-GILLIAM OR-
741 PM PDT SAT JUL 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTH CENTRAL
GILLIAM...EAST CENTRAL KLICKITAT...NORTHWESTERN MORROW AND
SOUTHWESTERN BENTON COUNTIES IS CANCELLED...

THE STORM THAT WAS BEING WARNED ON HAS WEAKENED TO BELOW SEVERE 
LEVELS. THEREFORE THE SEVERE THUNDERSTORM WARNING IS CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM PDT
SATURDAY EVENING FOR NORTHEASTERN OREGON AND SOUTHEASTERN WASHINGTON.

LAT...LON 4595 11972 4567 11984 4577 12015 4595 12009
TIME...MOT...LOC 0239Z 282DEG 3KT 4583 11995

$$

GP

The office that day

Everything else NWS Pendleton, OR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 14, 5:08 PM PDT	Special Weather Statement	PDT	Yakima	82 min
Jul 14, 6:46 PM PDT	Special Weather Statement	PDT	Kittitas	59 min
Jul 15, 12:42 PM PDT	Wind Advisory	PDT	Klickitat	7 hr
Jul 15, 3:15 PM PDT	Red Flag Warning	PDT	Clark, Cowlitz, Skamania	41 hr
Jul 14, 5:22 PM PDT	Special Weather Statement	PDT	Jefferson	83 min
Jul 14, 6:54 PM PDT	Special Weather Statement	PDT	Grant	66 min
Jul 14, 7:49 PM PDT	Special Weather Statement	PDT	Jefferson	56 min
Jul 14, 8:05 PM PDT	Special Weather Statement	PDT	Grant	55 min
Jul 14, 10:12 PM PDT	Special Weather Statement	PDT	Union	63 min

Nearby

Severe Thunderstorm Warnings in Washington, 2012 Severe Thunderstorm Warnings in Oregon, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.