Alert archive / Montana / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 29, NWS Billings, MT

May 31, 2014Rosebud County, Montana

NWS Billings, MT issued this severe thunderstorm warning at May 31, 2014, 2:45 PM MDT for Rosebud County, Montana. It was in force for 60 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 31, 2014, 2:45 PM MDT (20:45 UTC)
Expired: May 31, 2014, 3:45 PM MDT
In force: 60 min
Issued by: NWS Billings, MT
Area: Storm-based polygon

County Rosebud County, MT

The radar

The Billings radar (KBLX), 151 km from the middle of the area, began a volume at 20:46 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 31, 2:22 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 8.8 hours before the alert went out and 221 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2972 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 141 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 May 31, 8:56 AM MDT, 5 hours 49 minutes earlier.

Area forecast discussion, May 31, 8:56 AM MDT, 5 hours 49 minutes before

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Hazardous weather outlook, May 31, 6:11 AM MDT, 8 hours 34 minutes before

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In the hours before

Special weather statement, May 31, 2:37 PM MDT, 8 minutes before

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Special weather statement, May 31, 2:42 PM MDT, 3 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 31, 2:37 PM MDT	Special Weather Statement	BYZ		38 min
May 31, 3:05 PM MDT	Special Weather Statement	BYZ	Carbon	40 min
May 31, 3:36 PM MDT	Special Weather Statement	BYZ		39 min
May 31, 3:38 PM MDT	Special Weather Statement	BYZ		52 min
May 31, 3:44 PM MDT	Special Weather Statement	BYZ	Carbon	46 min
May 31, 4:03 PM MDT	Special Weather Statement	BYZ	Stillwater	42 min
May 31, 4:07 PM MDT	Severe Thunderstorm Warning	BYZ	Custer, Rosebud	53 min
May 31, 4:20 PM MDT	Tornado Warning	BYZ	Custer, Rosebud	25 min
May 31, 4:37 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Rosebud	53 min
May 31, 4:44 PM MDT	Tornado Warning	BYZ	Rosebud	31 min
May 31, 5:07 PM MDT	Special Weather Statement	BYZ	Big Horn	38 min
May 31, 5:12 PM MDT	Severe Thunderstorm Warning	BYZ	Custer, Powder River, Rosebud	63 min
May 31, 5:16 PM MDT	Severe Thunderstorm Warning	BYZ	Rosebud	59 min
May 31, 5:26 PM MDT	Special Weather Statement	BYZ	Big Horn	34 min
May 31, 5:29 PM MDT	Tornado Warning	BYZ	Custer, Rosebud	31 min
May 31, 5:38 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn	37 min
May 31, 2:42 PM MDT	Special Weather Statement	BYZ	Sheridan	48 min
May 31, 2:56 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	49 min
May 31, 3:51 PM MDT	Special Weather Statement	BYZ	Sheridan	39 min
May 31, 4:00 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	45 min
May 31, 4:22 PM MDT	Special Weather Statement	BYZ	Sheridan	38 min
May 31, 4:39 PM MDT	Flash Flood Warning	BYZ	Sheridan	6 hr
May 31, 5:29 PM MDT	Special Weather Statement	BYZ	Sheridan	31 min

Nearby

Severe Thunderstorm Warnings in Montana, 2014 Every severe thunderstorm warning in 2014

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.