Alert archive / Oregon / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 7, NWS Pendleton, OR

August 1, 2014Union County, Oregon

NWS Pendleton, OR issued this severe thunderstorm warning at Aug 1, 2014, 5:33 PM PDT for Union County, Oregon. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 1, 2014, 5:33 PM PDT (00:33 UTC)
Expired: Aug 1, 2014, 6:30 PM PDT
In force: 57 min
Issued by: NWS Pendleton, OR
Area: Storm-based polygon

County Union County, OR

The radar

The Pendleton radar (KPDT), 78 km from the middle of the area, began a volume at 00:35 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

Boise Airport, ID (KBOI), launched 00:00Z, 0.6 hours before the alert went out and 241 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: 246 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 3442 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 4 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pendleton, OR wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 1, 5:00 PM PDT, 33 minutes earlier.

Area forecast discussion, Aug 1, 5:00 PM PDT, 33 minutes before

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In the hours before

Special weather statement, Aug 1, 4:29 PM PDT, 1 hour 4 minutes before

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Special weather statement, Aug 1, 4:51 PM PDT, 42 minutes before

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Special weather statement, Aug 1, 5:20 PM PDT, 13 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 5:20 PM PDT	Special Weather Statement	PDT	Union	25 min
Aug 1, 6:20 PM PDT	Special Weather Statement	PDT	Union	25 min
Aug 1, 7:23 PM PDT	Special Weather Statement	PDT	Union	37 min
Aug 1, 8:01 PM PDT	Special Weather Statement	PDT	Crook	29 min
Aug 1, 8:37 PM PDT	Special Weather Statement	PDT	Crook	38 min
Aug 1, 8:56 PM PDT	Special Weather Statement	PDT	Grant	34 min
Aug 2, 2:34 PM PDT	Special Weather Statement	PDT	Wallowa	56 min
Aug 2, 3:22 PM PDT	Special Weather Statement	PDT	Umatilla	38 min
Aug 2, 4:09 PM PDT	Special Weather Statement	PDT	Wallowa	36 min
Aug 2, 4:23 PM PDT	Special Weather Statement	PDT	Umatilla	52 min
Aug 2, 4:03 PM PDT	Special Weather Statement	PDT	Kittitas	27 min

Nearby

Severe Thunderstorm Warnings in Oregon, 2014 Every severe thunderstorm warning in 2014

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.