Alert archive / Montana / Tornado Warnings in 2001
Tornado Warning 21, NWS Glasgow, MT
NWS Glasgow, MT issued this tornado warning at Jul 24, 2001, 8:33 PM MDT for McCone County, Montana. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jul 24, 2001, 8:33 PM MDT (02:33 UTC)
- Expired
- Jul 24, 2001, 9:30 PM MDT
- In force
- 57 min
- Issued by
- NWS Glasgow, MT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County McCone County, MT
The radar
The Glasgow radar (KGGW), 69 km from the middle of the area, began a volume at 02:33 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 |
|---|---|---|---|
| Jul 24, 4:15 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 2.6 hours before the alert went out and 69 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
- 873 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 1463 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 210 m²/s²
- 0-3 km storm-relative helicity
- 329 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 7.7
The text
As transmitted, in the capitals the NWS used until 2016.
156 WFUS55 KGGW 250233 TORGGW MTC055-250330- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE GLASGOW MT 833 PM MDT TUE JUL 24 2001 THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A * TORNADO WARNING FOR... NORTHERN MCCONE COUNTY IN NORTHEAST MONTANA * UNTIL 930 PM MDT * AT 833 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 19 MILES WEST OF VIDA...OR ABOUT 21 MILES SOUTHWEST OF WOLF POINT...MOVING SOUTHEAST AT 30 MPH. * THE TORNADO PRODUCING STORM WILL REMAIN OVER... RURAL CENTRAL AND EASTERN MCCONE COUNTY IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING PREVIOUSLY ISSUED FOR THE AREA. LAT...LON 4801 10615 4771 10619 4747 10544 4799 10544 .END 94
The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 6:00 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 60 min |
| Jul 24, 6:23 PM MDT | Tornado Warning | GGW | Valley | 67 min |
| Jul 24, 7:17 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 58 min |
| Jul 24, 7:30 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 60 min |
| Jul 24, 8:12 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 63 min |
| Jul 24, 8:35 PM MDT | Flash Flood Warning | GGW | McCone | 6 hr |
| Jul 24, 8:50 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 55 min |
| Jul 24, 9:33 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 57 min |
| Jul 24, 9:51 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 54 min |
| Jul 24, 9:53 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 67 min |
| Jul 24, 10:05 PM MDT | Flash Flood Warning | GGW | Garfield | 6 hr |
| Jul 24, 10:30 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 60 min |
| Jul 24, 10:44 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 61 min |
| Jul 24, 11:15 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Valley | 60 min |
| Jul 24, 11:16 PM MDT | Flash Flood Warning | GGW | Valley | 6 hr |
| Jul 24, 11:35 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 55 min |
| Jul 24, 11:43 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 62 min |
| Jul 25, 12:01 AM MDT | Severe Thunderstorm Warning | GGW | Richland | 59 min |
| Jul 25, 12:15 AM MDT | Severe Thunderstorm Warning | GGW | Garfield | 60 min |
| Jul 25, 12:40 AM MDT | Flash Flood Warning | GGW | Dawson, Richland | 6 hr |
| Jul 25, 12:44 AM MDT | Severe Thunderstorm Warning | GGW | McCone | 61 min |
| Jul 25, 12:53 AM MDT | Severe Thunderstorm Warning | GGW | Dawson | 67 min |
| Jul 25, 12:58 AM MDT | Severe Thunderstorm Warning | GGW | Richland | 62 min |
| Jul 25, 1:42 AM MDT | Severe Thunderstorm Warning | GGW | McCone | 63 min |
| Jul 25, 2:00 AM MDT | Severe Thunderstorm Warning | GGW | Wibaux | 60 min |
| Jul 25, 2:22 AM MDT | Severe Thunderstorm Warning | GGW | Dawson | 53 min |
| Jul 25, 4:36 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 54 min |
| Jul 25, 4:49 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Wibaux | 56 min |
| Jul 25, 5:43 PM MDT | Tornado Warning | GGW | Wibaux | 62 min |
| Jul 25, 5:45 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 60 min |
Nearby
Tornado Warnings in Montana, 2001Every tornado warning in 2001Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.