Alert archive / Montana / Tornado Warnings in 2002
Tornado Warning 9, NWS Great Falls, MT
NWS Great Falls, MT issued this tornado warning at Aug 5, 2002, 6:59 PM MDT for Chouteau County, Montana. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 5, 2002, 6:59 PM MDT (00:59 UTC)
- Expired
- Aug 5, 2002, 7:45 PM MDT
- In force
- 46 min
- Issued by
- NWS Great Falls, MT
- Area
- Counties, with a storm outline in the text
County Chouteau County, MT
The radar
The Great Falls radar (KTFX), 65 km from the middle of the area, began a volume at 00:58 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 |
|---|---|---|---|
| Aug 5, 3:55 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Great_falls, MT (KTFX), launched 00:00Z, 1.0 hours before the alert went out and 74 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
- 568 J/kg
- Mixed-layer CIN
- -156 J/kg
- Mixed-layer LCL
- 1251 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 301 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.7
The text
As transmitted, in the capitals the NWS used until 2016.
124 WFUS55 KTFX 060059 TORTFX MTC015-060145- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 658 PM MDT MON AUG 5 2002 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A * TORNADO WARNING FOR... WEST CENTRAL CHOUTEAU COUNTY IN NORTH CENTRAL MONTANA * UNTIL 745 PM MDT * AT 653 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO OVER THE KNEES...OR ABOUT 31 MILES WEST OF FORT BENTON... MOVING NORTHEAST AT 20 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... RURAL WESTERN CHOUTEAU COUNTY AT 710 PM MDT RURAL NORTHWESTERN CHOUTEAU COUNTY AT 730 PM MDT THIS STORM IS CAPABLE OF PRODUCING HAIL OVER 2 INCHES...AND A TORNADO. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT MONDAY EVENING FOR WESTERN MONTANA. LAT...LON 4807 11142 4785 11138 4799 11055 4813 11087
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 6:07 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 53 min |
| Aug 5, 6:18 PM MDT | Tornado Warning | TFX | Judith Basin | 27 min |
| Aug 5, 6:45 PM MDT | Tornado Warning | TFX | Chouteau | 30 min |
| Aug 5, 6:48 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 57 min |
| Aug 5, 6:51 PM MDT | Severe Thunderstorm Warning | TFX | Pondera | 54 min |
| Aug 5, 7:03 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 57 min |
| Aug 5, 7:27 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 48 min |
| Aug 5, 7:29 PM MDT | Severe Thunderstorm Warning | TFX | Toole | 46 min |
| Aug 5, 7:32 PM MDT | Tornado Warning | TFX | Fergus | 58 min |
| Aug 5, 7:48 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 57 min |
| Aug 5, 7:58 PM MDT | Severe Thunderstorm Warning | TFX | Liberty | 62 min |
| Aug 5, 8:45 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 30 min |
| Aug 5, 9:18 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 57 min |
| Aug 6, 4:57 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 63 min |
| Aug 6, 5:11 PM MDT | Tornado Warning | TFX | Fergus | 64 min |
Nearby
Tornado Warnings in Montana, 2002Every tornado warning in 2002Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.