Alert archive / Montana / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 12, NWS Billings, MT

May 21, 2018Golden Valley County, Musselshell County, Montana

NWS Billings, MT issued this severe thunderstorm warning at May 21, 2018, 6:57 PM MDT for Golden Valley County, Musselshell County, Montana. It was in force for 33 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: May 21, 2018, 6:57 PM MDT (00:57 UTC)
Expired: May 21, 2018, 7:30 PM MDT
In force: 33 min
Issued by: NWS Billings, MT
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Golden Valley County, MT, Musselshell County, MT

The radar

The Billings radar (KBLX), 67 km from the middle of the area, began a volume at 00:57 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.

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 Billings, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at May 21, 2:38 PM MDT, 4 hours 19 minutes earlier.

Area forecast discussion, May 21, 2:38 PM MDT, 4 hours 19 minutes before

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Hazardous weather outlook, May 21, 2:41 PM MDT, 4 hours 16 minutes before

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In the hours before

Special weather statement, May 21, 4:57 PM MDT, 2 hours before

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Special weather statement, May 21, 5:28 PM MDT, 1 hour 29 minutes before

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Special weather statement, May 21, 5:30 PM MDT, 1 hour 27 minutes before

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Special weather statement, May 21, 6:49 PM MDT, 8 minutes before

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The office that day

Everything else NWS Billings, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 21, 6:49 PM MDT	Special Weather Statement	BYZ	Musselshell	41 min
May 21, 8:11 PM MDT	Special Weather Statement	BYZ	Musselshell	49 min
May 21, 9:27 PM MDT	Special Weather Statement	BYZ	Treasure	63 min
May 22, 11:27 AM MDT	River Flood Warning	BYZ	Carbon	14 days
May 22, 11:27 AM MDT	River Flood Warning	BYZ	Carbon	14 days
May 22, 12:40 PM MDT	Flood Watch	BYZ	Big Horn, Carbon, Golden Valley, Musselshell, Park, Stillwater and 3 more	35 hr
May 22, 4:37 PM MDT	Severe Thunderstorm Warning	BYZ	Sweet Grass	38 min
May 22, 5:33 PM MDT	Special Weather Statement	BYZ	Carter	42 min

Nearby

Severe Thunderstorm Warnings in Montana, 2018 Every severe thunderstorm warning in 2018

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.