Alert archive / Montana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 86, NWS Billings, MT

June 29, 2001Carter County, Powder River County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Jun 29, 2001, 2:15 AM MDT for Carter County, Powder River County, Montana. It was in force for 60 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 29, 2001, 2:15 AM MDT (08:15 UTC)
Expired
Jun 29, 2001, 3:15 AM MDT
In force
60 min
Issued by
NWS Billings, MT
Area
Whole counties

Counties Carter County, MT, Powder River County, MT

The radar

The Rapid City radar (KUDX), 231 km from the middle of the area, began a volume at 08:18 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 was reported inside it

TimeReportWhereRemark
Jun 29, 2:30 AM MDTHail 0.88Broadus, MT

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 8.3 hours before the alert went out and 328 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, Glasgow Intl Airport, MT at 00:00Z on 2001-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 148 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Glasgow Intl Airport, MT at 00:00Z on 2001-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
148 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
2160 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 29, 2:00 AM MDT, 15 minutes earlier.

Area forecast discussion, Jun 29, 2:00 AM MDT, 15 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 6:09 PM MDTSevere Thunderstorm WarningBYZRosebud66 min
Jun 28, 6:18 PM MDTSevere Thunderstorm WarningBYZYellowstone57 min
Jun 28, 6:45 PM MDTSevere Thunderstorm WarningBYZWheatland60 min
Jun 28, 7:08 PM MDTTornado WarningBYZWheatland37 min
Jun 28, 7:13 PM MDTSevere Thunderstorm WarningBYZGolden Valley62 min
Jun 28, 7:17 PM MDTSevere Thunderstorm WarningBYZTreasure58 min
Jun 28, 7:34 PM MDTTornado WarningBYZGolden Valley26 min
Jun 28, 8:03 PM MDTSevere Thunderstorm WarningBYZMusselshell57 min
Jun 28, 8:11 PM MDTSevere Thunderstorm WarningBYZRosebud59 min
Jun 28, 8:21 PM MDTSevere Thunderstorm WarningBYZWheatland54 min
Jun 28, 9:10 PM MDTSevere Thunderstorm WarningBYZRosebud50 min
Jun 28, 9:18 PM MDTSevere Thunderstorm WarningBYZGolden Valley27 min
Jun 28, 9:41 PM MDTSevere Thunderstorm WarningBYZTreasure, Yellowstone64 min
Jun 28, 9:52 PM MDTSevere Thunderstorm WarningBYZCuster58 min
Jun 28, 10:28 PM MDTSevere Thunderstorm WarningBYZMusselshell32 min
Jun 28, 10:32 PM MDTTornado WarningBYZRosebud, Treasure58 min
Jun 28, 11:00 PM MDTSevere Thunderstorm WarningBYZBig Horn60 min
Jun 28, 11:29 PM MDTTornado WarningBYZRosebud46 min
Jun 28, 11:44 PM MDTSevere Thunderstorm WarningBYZRosebud46 min
Jun 29, 12:00 AM MDTSevere Thunderstorm WarningBYZCuster60 min
Jun 29, 12:16 AM MDTSevere Thunderstorm WarningBYZRosebud74 min
Jun 29, 12:58 AM MDTSevere Thunderstorm WarningBYZCuster62 min
Jun 29, 1:10 AM MDTSevere Thunderstorm WarningBYZTreasure60 min
Jun 29, 1:26 AM MDTSevere Thunderstorm WarningBYZPowder River49 min
Jun 29, 1:30 AM MDTSevere Thunderstorm WarningBYZRosebud60 min
Jun 29, 1:59 AM MDTSevere Thunderstorm WarningBYZCuster61 min
Jun 29, 2:58 AM MDTSevere Thunderstorm WarningBYZCuster62 min
Jun 29, 3:14 AM MDTSevere Thunderstorm WarningBYZCarter46 min
Jun 29, 4:34 AM MDTSevere Thunderstorm WarningBYZCarter, Fallon56 min

Nearby

Severe Thunderstorm Warnings in Montana, 2001Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.