Alert archive / Oregon / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 2, NWS Pendleton, OR

June 15, 2021Umatilla County, Union County, Wallowa County, Oregon

NWS Pendleton, OR issued this severe thunderstorm warning at Jun 15, 2021, 2:10 AM PDT for Umatilla County, Union County, Wallowa County, Oregon. 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: Jun 15, 2021, 2:10 AM PDT (09:10 UTC)
Expired: Jun 15, 2021, 2:45 AM PDT
In force: 35 min
Issued by: NWS Pendleton, OR
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Umatilla County, OR, Union County, OR, Wallowa County, OR

The nearest sounding before it

Boise Airport, ID (KBOI), launched 00:00Z, 9.2 hours before the alert went out and 249 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: 31 J/kg
Mixed-layer CIN: -391 J/kg
Mixed-layer LCL: 3243 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 189 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

510 
WUUS56 KPDT 150910
SVRPDT
ORC059-061-063-150945-
/O.NEW.KPDT.SV.W.0002.210615T0910Z-210615T0945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pendleton OR
210 AM PDT Tue Jun 15 2021

The National Weather Service in Pendleton Oregon has issued a

* Severe Thunderstorm Warning for...
  Northeastern Umatilla County in northeastern Oregon...
  Central Union County in northeastern Oregon...
  Northwestern Wallowa County in northeastern Oregon...

* Until 245 AM PDT.

* At 209 AM PDT, a severe thunderstorm was located 9 miles northeast
  of Spout Springs, or 26 miles southeast of Walla Walla, moving
  north at 40 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  La Grande, Union, Elgin, Island City, Cove, Imbler, Summerville,
  Minam, Tollgate, Spout Springs, Hilgard and Bingham Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4514 11781 4515 11828 4588 11822 4586 11760
TIME...MOT...LOC 0909Z 193DEG 34KT 4582 11789 

HAIL...1.00IN
WIND...60MPH
 
$$

VP

1 follow-up statement

117 
WWUS56 KPDT 150948
SVSPDT

Severe Weather Statement
National Weather Service Pendleton OR
248 AM PDT Tue Jun 15 2021

ORC059-061-063-150957-
/O.EXP.KPDT.SV.W.0002.000000T0000Z-210615T0945Z/
Umatilla OR-Union OR-Wallowa OR-
248 AM PDT Tue Jun 15 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN UMATILLA...
CENTRAL UNION AND NORTHWESTERN WALLOWA COUNTIES HAS EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.

LAT...LON 4514 11781 4515 11828 4588 11822 4586 11760
TIME...MOT...LOC 0947Z 193DEG 34KT 4612 11779 

$$

VP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 12:09 AM PDT	Severe Thunderstorm Warning	PDT	Umatilla	36 min
Jun 15, 12:37 PM PDT	Special Weather Statement	PDT	Umatilla	53 min

Nearby

Severe Thunderstorm Warnings in Oregon, 2021 Every severe thunderstorm warning 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.