Alert archive / Montana / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 55, NWS Billings, MT

June 1, 2018Big Horn County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Jun 1, 2018, 10:28 AM MDT for Big Horn County, Montana. It was in force for 47 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
Jun 1, 2018, 10:28 AM MDT (16:28 UTC)
Expired
Jun 1, 2018, 11:15 AM MDT
In force
47 min
Issued by
NWS Billings, MT
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Big Horn County, MT

The radar

The Billings radar (KBLX), 99 km from the middle of the area, began a volume at 16:32 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 nearest sounding before it

Riverton, WY (KRIW), launched 12:00Z, 4.5 hours before the alert went out and 272 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Riverton, WY at 12:00Z on 2018-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 12:00Z on 2018-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2523 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Jun 1, 9:29 AM MDT, 59 minutes earlier.

Area forecast discussion, Jun 1, 9:29 AM MDT, 59 minutes before
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Hazardous weather outlook, Jun 1, 4:25 AM MDT, 6 hours 3 minutes before
Hazardous Weather Outlook
National Weather Service Billings MT
425 AM MDT Fri Jun 1 2018

MTZ032-033-036-037-WYZ099-021030-
Custer-Fallon-Powder River-Carter-Sheridan Foothills-
425 AM MDT Fri Jun 1 2018

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

* WHAT...Isolated severe thunderstorms.

* WHEN...Today.

* ADDITIONAL DETAILS...Isolated thunderstorms are expected today.
  Some storms may become capable of large hail, strong wind gusts
  and very heavy rainfall.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be sure to stay tuned for future updates as locations, timing, and
impacts could change.

In the hours before

Local storm report, Jun 1, 8:18 AM MDT, 2 hours 10 minutes before
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Local storm report, Jun 1, 8:50 AM MDT, 1 hour 38 minutes before
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Local storm report, Jun 1, 8:52 AM MDT, 1 hour 36 minutes before
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Local storm report, Jun 1, 9:35 AM MDT, 53 minutes before
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Special weather statement, Jun 1, 9:36 AM MDT, 52 minutes before
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Special weather statement, Jun 1, 10:18 AM MDT, 10 minutes before
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        Please try again in a few minutes.
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The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 6:02 PM MDTSpecial Weather StatementBYZGolden Valley, Sweet Grass43 min
May 31, 6:13 PM MDTSpecial Weather StatementBYZBig Horn47 min
May 31, 6:14 PM MDTSevere Thunderstorm WarningBYZMusselshell61 min
May 31, 6:20 PM MDTSpecial Weather StatementBYZPark40 min
May 31, 6:21 PM MDTSevere Thunderstorm WarningBYZBig Horn54 min
May 31, 6:34 PM MDTAreal Flood WarningBYZGolden Valley, Musselshell, Wheatland9 hr
May 31, 6:46 PM MDTSpecial Weather StatementBYZGolden Valley44 min
May 31, 6:55 PM MDTSpecial Weather StatementBYZPark50 min
May 31, 7:01 PM MDTSevere Thunderstorm WarningBYZBig Horn, Rosebud42 min
May 31, 7:03 PM MDTSevere Thunderstorm WarningBYZGolden Valley, Musselshell42 min
May 31, 7:10 PM MDTSevere Thunderstorm WarningBYZMusselshell, Rosebud65 min
May 31, 7:27 PM MDTSevere Thunderstorm WarningBYZMusselshell46 min
May 31, 7:37 PM MDTSpecial Weather StatementBYZCarter38 min
May 31, 7:45 PM MDTSpecial Weather StatementBYZ30 min
May 31, 8:16 PM MDTSpecial Weather StatementBYZCarter29 min
May 31, 8:27 PM MDTSpecial Weather StatementBYZMusselshell48 min
May 31, 8:41 PM MDTSevere Thunderstorm WarningBYZMusselshell, Rosebud64 min
May 31, 8:45 PM MDTSpecial Weather StatementBYZCarter45 min
May 31, 8:51 PM MDTSevere Thunderstorm WarningBYZCarter, Custer54 min
May 31, 9:19 PM MDTSpecial Weather StatementBYZTreasure41 min
May 31, 9:36 PM MDTSpecial Weather StatementBYZ39 min
May 31, 9:48 PM MDTSpecial Weather StatementBYZFallon42 min
May 31, 9:55 PM MDTSevere Thunderstorm WarningBYZBig Horn50 min
May 31, 10:42 PM MDTSpecial Weather StatementBYZMusselshell48 min
May 31, 10:50 PM MDTSpecial Weather StatementBYZTreasure40 min
May 31, 10:54 PM MDTSpecial Weather StatementBYZYellowstone36 min
May 31, 11:19 PM MDTAreal Flood WarningBYZYellowstone75 min
May 31, 11:33 PM MDTSpecial Weather StatementBYZYellowstone42 min
May 31, 11:39 PM MDTSpecial Weather StatementBYZTreasure36 min
May 31, 11:51 PM MDTSpecial Weather StatementBYZMusselshell39 min
Jun 1, 12:24 AM MDTSpecial Weather StatementBYZRosebud51 min
Jun 1, 12:27 AM MDTSpecial Weather StatementBYZMusselshell48 min
Jun 1, 12:49 AM MDTSpecial Weather StatementBYZTreasure41 min
Jun 1, 1:54 AM MDTSpecial Weather StatementBYZCuster51 min
Jun 1, 7:41 AM MDTAreal Flood AdvisoryBYZYellowstone3 hr
Jun 1, 8:08 AM MDTSpecial Weather StatementBYZYellowstone22 min
Jun 1, 9:36 AM MDTSpecial Weather StatementBYZYellowstone39 min
Jun 1, 10:18 AM MDTSpecial Weather StatementBYZBig Horn42 min
Jun 1, 11:00 AM MDTSpecial Weather StatementBYZBig Horn45 min
Jun 1, 11:01 AM MDTSpecial Weather StatementBYZStillwater44 min
Jun 1, 11:09 AM MDTSpecial Weather StatementBYZBig Horn51 min
Jun 1, 11:14 AM MDTSevere Thunderstorm WarningBYZBig Horn, Rosebud, Treasure61 min
Jun 1, 11:43 AM MDTSpecial Weather StatementBYZBig Horn62 min
Jun 1, 12:08 PM MDTSevere Thunderstorm WarningBYZRosebud67 min
Jun 1, 12:23 PM MDTSpecial Weather StatementBYZRosebud37 min
Jun 1, 12:36 PM MDTSpecial Weather StatementBYZ39 min
Jun 1, 12:53 PM MDTSevere Thunderstorm WarningBYZPowder River67 min
Jun 1, 1:01 PM MDTSevere Thunderstorm WarningBYZCuster, Rosebud44 min
Jun 1, 1:44 PM MDTSpecial Weather StatementBYZ46 min
Jun 1, 1:55 PM MDTSpecial Weather StatementBYZPowder River50 min
Jun 1, 3:10 PM MDTSpecial Weather StatementBYZCarter50 min
Jun 1, 3:20 PM MDTAreal Flood WarningBYZRosebud24 hr
Jun 1, 10:51 AM MDTSpecial Weather StatementBYZSheridan39 min
Jun 1, 1:04 PM MDTSpecial Weather StatementBYZSheridan41 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.