Alert archive / Montana / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 92, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Jul 16, 2002, 9:51 PM MDT for Prairie County, Montana. It was in force for 54 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
- Jul 16, 2002, 9:51 PM MDT (03:51 UTC)
- Expired
- Jul 16, 2002, 10:45 PM MDT
- In force
- 54 min
- Issued by
- NWS Glasgow, MT
- Area
- Counties, with a storm outline in the text
County Prairie County, MT
The radar
The Glasgow radar (KGGW), 176 km from the middle of the area, began a volume at 03:52 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 16, 10:00 PM MDT | Thunderstorm Wind 52 M | Terry, MT | 60 mph wind gust reported by spotter 20 miles northwest of Terry. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 16, 5:45 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 3.9 hours before the alert went out and 177 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.
- Mixed-layer CAPE
- 396 J/kg
- Mixed-layer CIN
- -137 J/kg
- Mixed-layer LCL
- 2378 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 6:40 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 65 min |
| Jul 16, 7:47 PM MDT | Severe Thunderstorm Warning | GGW | Petroleum | 13 min |
| Jul 16, 8:30 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 60 min |
| Jul 16, 11:16 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 59 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2002Every severe thunderstorm warning in 2002
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.