Alert archive / Montana / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 24, NWS Billings, MT

May 23, 2018Custer County, Montana

NWS Billings, MT issued this severe thunderstorm warning at May 23, 2018, 5:18 PM MDT for Custer County, Montana. It was in force for 57 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 23, 2018, 5:18 PM MDT (23:18 UTC)
Expired
May 23, 2018, 6:15 PM MDT
In force
57 min
Issued by
NWS Billings, MT
Area
Storm-based polygon
Hail
1.25 in
Wind
70.0 mph

County Custer County, MT

The radar

The Glasgow radar (KGGW), 231 km from the middle of the area, began a volume at 23:22 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 23, 3:28 PM MDT, 1 hour 50 minutes earlier.

Area forecast discussion, May 23, 3:28 PM MDT, 1 hour 50 minutes before
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Hazardous weather outlook, May 23, 3:17 AM MDT, 14 hours 1 minute before
Hazardous Weather Outlook
National Weather Service Billings MT
317 AM MDT Wed May 23 2018

MTZ030>041-056>058-064>068-WYZ098-099-231030-
Treasure-Northern Rosebud-Custer-Fallon-Northern Stillwater-
Yellowstone-Powder River-Carter-Southern Big Horn-Eastern Carbon-
Northern Park-Northern Sweet Grass-Red Lodge Foothills-
Northern Big Horn-Southern Rosebud-Paradise Valley-Livingston Area-
Beartooth Foothills-Absaroka/Beartooth Mountains-Crazy Mountains-
Northeast Bighorn Mountains-Sheridan Foothills-
317 AM MDT Wed May 23 2018

This Hazardous Weather Outlook is for portions of south central
Montana...southeast Montana and north central Wyoming.

* WHAT...Showers and thunderstorms, with potential for heavy
  rainfall and a few severe thunderstorms.

* WHERE...Southern Montana and northern Wyoming.

* WHEN...Today.

* ADDITIONAL DETAILS...A few severe thunderstorms capable of
  producing large hail and strong winds are possible from Hysham to
  Lame Deer eastward this afternoon and evening.

* ADDITIONAL HAZARD CONCERNS...Showers and thunderstorms will
  produce areas of heavy rainfall. Some rivers and streams could
  see aggressive rises from this rainfall. Localized low land
  flooding is possible as well.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Hazardous Weather Outlook is issued when hazardous weather could
impact the region within the next week. Be sure to stay tuned for
future updates as locations, timing, and impacts could change.
Begin preparations to mitigate any impacts that could result from
the hazardous weather.

&&

In the hours before

Special weather statement, May 23, 3:31 PM MDT, 1 hour 47 minutes before
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Special weather statement, May 23, 3:35 PM MDT, 1 hour 43 minutes before
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Special weather statement, May 23, 3:58 PM MDT, 1 hour 20 minutes before
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Local storm report, May 23, 4:34 PM MDT, 44 minutes before
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Special weather statement, May 23, 4:52 PM MDT, 26 minutes before
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Special weather statement, May 23, 5:06 PM MDT, 12 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 22, 6:07 PM MDTSpecial Weather StatementBYZYellowstone38 min
May 22, 6:07 PM MDTSevere Thunderstorm WarningBYZCarter38 min
May 22, 6:18 PM MDTSevere Thunderstorm WarningBYZStillwater43 min
May 22, 7:49 PM MDTSevere Thunderstorm WarningBYZStillwater41 min
May 22, 8:43 PM MDTAreal Flood AdvisoryBYZYellowstone3 hr
May 22, 8:51 PM MDTSevere Thunderstorm WarningBYZCarbon54 min
May 22, 9:13 PM MDTAreal Flood AdvisoryBYZCarbon, Stillwater3 hr
May 22, 10:31 PM MDTFlash Flood WarningBYZCarbon6 hr
May 23, 5:00 AM MDTAreal Flood AdvisoryBYZCarbon, Stillwater, Yellowstone7 hr
May 23, 7:55 AM MDTAreal Flood WarningBYZCarbon, Stillwater, Sweet Grass6 hr
May 23, 11:09 AM MDTRiver Flood WarningBYZPark5 days
May 23, 11:45 AM MDTRiver Flood WarningBYZSweet Grass5 days
May 23, 12:14 PM MDTRiver Flood WatchBYZStillwater, Yellowstone3 days
May 23, 12:44 PM MDTAreal Flood WarningBYZCarbon, Stillwater, Sweet Grass6 hr
May 23, 1:25 PM MDTSpecial Weather StatementBYZYellowstone50 min
May 23, 2:52 PM MDTSpecial Weather StatementBYZRosebud38 min
May 23, 3:31 PM MDTSpecial Weather StatementBYZYellowstone44 min
May 23, 3:35 PM MDTSpecial Weather StatementBYZRosebud40 min
May 23, 3:45 PM MDTSevere Thunderstorm WarningBYZRosebud60 min
May 23, 3:49 PM MDTSevere Thunderstorm WarningBYZYellowstone56 min
May 23, 3:58 PM MDTSpecial Weather StatementBYZYellowstone47 min
May 23, 4:03 PM MDTSevere Thunderstorm WarningBYZRosebud57 min
May 23, 4:12 PM MDTSevere Thunderstorm WarningBYZYellowstone48 min
May 23, 4:29 PM MDTSevere Thunderstorm WarningBYZYellowstone61 min
May 23, 4:42 PM MDTSevere Thunderstorm WarningBYZBig Horn63 min
May 23, 4:52 PM MDTSpecial Weather StatementBYZCuster38 min
May 23, 5:06 PM MDTSpecial Weather StatementBYZPowder River39 min
May 23, 5:31 PM MDTSpecial Weather StatementBYZTreasure44 min
May 23, 5:54 PM MDTSpecial Weather StatementBYZCarter51 min

Nearby

Severe Thunderstorm Warnings in Montana, 2018Every 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.