Alert archive / Oregon / Mesoscale Discussions in 2020

Mesoscale Discussion 765

May 30, 202013 counties in Oregon; Benton County, Klickitat County, Washington

The Storm Prediction Center issued this mesoscale discussion at May 30, 2020, 11:20 AM PDT for 13 counties in Oregon; Benton County, Klickitat County, Washington. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued: May 30, 2020, 11:20 AM PDT (18:20 UTC)
Expired: May 30, 2020, 1:15 PM PDT
In force: 115 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...severe thunderstorm watch likely
Chance of a watch: 95%

Counties Crook County, OR, Deschutes County, OR, Gilliam County, OR, Grant County, OR, Hood River County, OR, Jefferson County, OR, Klamath County, OR, Lake County, OR, Morrow County, OR, Sherman County, OR, Umatilla County, OR, Wasco County, OR, Wheeler County, OR, Benton County, WA, Klickitat County, WA

The radar

The Pendleton radar (KPDT), 170 km from the middle of the area, began a volume at 18:21 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 236May 30, 11:50 AM PDT

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 11:52 AM PDT	Severe Thunderstorm Watch	SPC	Crook, Deschutes, Gilliam, Grant, Harney, Jefferson and 9 more	7 hr
May 30, 3:13 PM PDT	Mesoscale Discussion	SPC	Gilliam, Morrow, Sherman, Umatilla, Union, Wasco and 1 more	2 hr
May 30, 4:22 PM PDT	Severe Thunderstorm Watch	SPC	Adams, Asotin, Chelan, Douglas, Ferry, Garfield and 7 more	5 hr

Nearby

Mesoscale Discussions in Oregon, 2020 Mesoscale Discussions in Washington, 2020 Every mesoscale discussion in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.