Alert archive / Washington / Mesoscale Discussions in 2017

Mesoscale Discussion 69

January 18, 2017Gilliam County, Morrow County, Sherman County, Oregon; 7 counties in Washington

The Storm Prediction Center issued this mesoscale discussion at Jan 18, 2017, 4:00 AM PST for Gilliam County, Morrow County, Sherman County, Oregon; 7 counties in Washington. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Jan 18, 2017, 4:00 AM PST (12:00 UTC)
Expired
Jan 18, 2017, 7:00 AM PST
In force
3 hr
Issued by
the Storm Prediction Center

Counties Gilliam County, OR, Morrow County, OR, Sherman County, OR, Benton County, WA, Franklin County, WA, Grant County, WA, Kittitas County, WA, Klickitat County, WA, Walla Walla County, WA, Yakima County, WA

The radar

The Pendleton radar (KPDT), 123 km from the middle of the area, began a volume at 12:02 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 text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 17, 5:47 PM PSTMesoscale DiscussionSPCMorrow, Umatilla6 hr

Nearby

Mesoscale Discussions in Washington, 2017Mesoscale Discussions in Oregon, 2017Every mesoscale discussion in 2017

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.