Alert archive / Montana / Mesoscale Discussions in 2020

Mesoscale Discussion 634

May 18, 20206 counties in Montana

The Storm Prediction Center issued this mesoscale discussion at May 18, 2020, 5:23 PM MDT for 6 counties in Montana. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 18, 2020, 5:23 PM MDT (23:23 UTC)
Expired: May 18, 2020, 7:30 PM MDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 20%

Counties Cascade County, MT, Granite County, MT, Lewis and Clark County, MT, Pondera County, MT, Powell County, MT, Teton County, MT

The radar

The Great Falls radar (KTFX), 44 km from the middle of the area, began a volume at 23:26 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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Nearby

Mesoscale Discussions in Montana, 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.