Alert archive / Montana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 9, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jun 4, 1997, 7:14 PM MDT for Pondera County, Teton County, Toole County, Montana. It was in force for 61 min. 2 reports 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 4, 1997, 7:14 PM MDT (01:14 UTC)
- Expired
- Jun 4, 1997, 8:15 PM MDT
- In force
- 61 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties
Counties Pondera County, MT, Teton County, MT, Toole County, MT
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 4, 7:25 PM MDT | Hail 0.75 | Dutton, MT | |
| Jun 4, 8:10 PM MDT | Thunderstorm Wind 51 | Conrad, 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
Great_falls, MT (KTFX), launched 00:00Z, 1.2 hours before the alert went out and 139 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
- 799 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 2114 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 208 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KGTF 050116 RRA SVRGTF MTC073-099-101-050215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 714 PM MDT WED JUN 4 1997 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 815 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH MONTANA ...CENTRAL AND EASTERN PONDERA COUNTY...EASTERN TETON COUNTY ...SOUTHERN TOOLE COUNTY AT 715PM MDT RADAR INDICATED A SEVERE THUNDERSTORM NEAR DUTTON AND WEST OF COLLINS IN EASTERN TETON COUNTY MOVING NORTH NORTHEAST AT 30 MPH. THESE STORMS HAVE A HISTORY OF GOLF BALL SIZE HAIL. ANOTHER STORM WAS LOCATED OVER NORTH CENTRAL PONDERA MOVING NORTH NORTHEAST AT 30 MPH. LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS THUNDERSTORM. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLpE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. &
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 6:07 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 68 min |
| Jun 4, 6:11 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 64 min |
| Jun 4, 7:53 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 37 min |
| Jun 4, 8:01 PM MDT | Severe Thunderstorm Warning | TFX | Toole | 44 min |
| Jun 4, 8:36 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 54 min |
| Jun 5, 12:15 AM MDT | Severe Thunderstorm Warning | TFX | Judith Basin | 45 min |
| Jun 5, 3:49 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Meagher | 56 min |
Nearby
Severe Thunderstorm Warnings in Montana, 1997Every severe thunderstorm warning in 1997
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.