Alert archive / Oregon / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 5, NWS Pendleton, OR

June 26, 2019Gilliam County, Morrow County, Oregon

NWS Pendleton, OR issued this severe thunderstorm warning at Jun 26, 2019, 4:18 PM PDT for Gilliam County, Morrow County, Oregon. It was in force for 42 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: Jun 26, 2019, 4:18 PM PDT (23:18 UTC)
Expired: Jun 26, 2019, 5:00 PM PDT
In force: 42 min
Issued by: NWS Pendleton, OR
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Gilliam County, OR, Morrow County, OR

The radar

The Pendleton radar (KPDT), 88 km from the middle of the area, began a volume at 23:21 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jun 26, 12:26 PM PDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 11.3 hours before the alert went out and 370 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: 1831 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 49 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 Jun 26, 1:28 PM PDT, 2 hours 50 minutes earlier.

Area forecast discussion, Jun 26, 1:28 PM PDT, 2 hours 50 minutes before

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In the hours before

Special weather statement, Jun 26, 3:07 PM PDT, 1 hour 11 minutes before

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Local storm report, Jun 26, 3:24 PM PDT, 54 minutes before

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Special weather statement, Jun 26, 3:56 PM PDT, 22 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
Jun 26, 3:29 AM PDT	Red Flag Warning	PDT		21 hr
Jun 26, 3:07 PM PDT	Special Weather Statement	PDT	Sherman	23 min
Jun 26, 3:56 PM PDT	Special Weather Statement	PDT	Gilliam	34 min

Nearby

Severe Thunderstorm Warnings in Oregon, 2019 Every severe thunderstorm warning in 2019

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.