Alert archive / Montana / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 6, NWS Billings, MT

June 1, 2015Carter County, Custer County, Powder River County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Jun 1, 2015, 9:52 PM MDT for Carter County, Custer County, Powder River County, Montana. It was in force for 23 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, 2015, 9:52 PM MDT (03:52 UTC)
Expired: Jun 1, 2015, 10:15 PM MDT
In force: 23 min
Issued by: NWS Billings, MT
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Carter County, MT, Custer County, MT, Powder River County, MT

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 3.9 hours before the alert went out and 368 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 200 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 1974 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 156 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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, 9:06 PM MDT, 46 minutes earlier.

Area forecast discussion, Jun 1, 9:06 PM MDT, 46 minutes before

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Hazardous weather outlook, Jun 1, 9:12 PM MDT, 40 minutes before

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In the hours before

Local storm report, Jun 1, 8:50 PM MDT, 1 hour 2 minutes before

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Special weather statement, Jun 1, 9:27 PM MDT, 25 minutes before

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Special weather statement, Jun 1, 9:33 PM MDT, 19 minutes before

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Local storm report, Jun 1, 9:34 PM MDT, 18 minutes before

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Local storm report, Jun 1, 9:37 PM MDT, 15 minutes before

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Local storm report, Jun 1, 9:50 PM MDT, 2 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
Jun 1, 6:08 PM MDT	Flash Flood Warning	BYZ	Yellowstone	3 hr
Jun 1, 6:29 PM MDT	Severe Thunderstorm Warning	BYZ	Wheatland	22 min
Jun 1, 6:45 PM MDT	Special Weather Statement	BYZ	Stillwater	60 min
Jun 1, 7:12 PM MDT	Special Weather Statement	BYZ	Big Horn	33 min
Jun 1, 7:51 PM MDT	Special Weather Statement	BYZ	Treasure	39 min
Jun 1, 8:28 PM MDT	Special Weather Statement	BYZ	Powder River, Rosebud, Treasure	62 min
Jun 1, 9:27 PM MDT	Special Weather Statement	BYZ	Custer, Powder River, Rosebud, Treasure	63 min
Jun 1, 9:33 PM MDT	Special Weather Statement	BYZ	Big Horn	42 min
Jun 1, 10:02 PM MDT	Areal Flood Advisory	BYZ	Big Horn	3 hr
Jun 1, 10:30 PM MDT	Special Weather Statement	BYZ	Carter, Custer, Fallon	60 min
Jun 1, 11:24 PM MDT	Special Weather Statement	BYZ	Fallon	66 min
Jun 2, 12:52 PM MDT	Special Weather Statement	BYZ	Stillwater	23 min
Jun 2, 1:33 PM MDT	Special Weather Statement	BYZ	Yellowstone	42 min
Jun 2, 2:20 PM MDT	Special Weather Statement	BYZ	Yellowstone	55 min
Jun 2, 3:08 PM MDT	Special Weather Statement	BYZ	Big Horn	67 min
Jun 2, 4:13 PM MDT	Special Weather Statement	BYZ	Big Horn	62 min
Jun 2, 5:11 PM MDT	Special Weather Statement	BYZ	Golden Valley	64 min
Jun 2, 5:33 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Rosebud	57 min
Jun 1, 7:14 PM MDT	Special Weather Statement	BYZ	Sheridan	61 min

Nearby

Severe Thunderstorm Warnings in Montana, 2015 Every severe thunderstorm warning in 2015

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.