Alert archive / Montana / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 172, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Jul 28, 2001, 5:56 PM MDT for Valley County, Montana. It was in force for 64 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 28, 2001, 5:56 PM MDT (23:56 UTC)
- Expired
- Jul 28, 2001, 7:00 PM MDT
- In force
- 64 min
- Issued by
- NWS Glasgow, MT
- Area
- Whole counties
County Valley County, MT
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 28, 6:51 PM MDT | Thunderstorm Wind 64 M | Glasgow, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 28, 3:00 PM MDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 11.9 hours before the alert went out and 17 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
- 1024 J/kg
- Mixed-layer CIN
- -214 J/kg
- Mixed-layer LCL
- 2081 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 219 m²/s²
- 0-3 km storm-relative helicity
- 284 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 4:44 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 61 min |
| Jul 28, 5:27 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 63 min |
| Jul 28, 5:44 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 61 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.