Alert archive / Montana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 8, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jun 4, 1997, 6:11 PM MDT for Pondera County, Teton County, Montana. It was in force for 64 min. 4 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, 6:11 PM MDT (00:11 UTC)
- Expired
- Jun 4, 1997, 7:15 PM MDT
- In force
- 64 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties
Counties Pondera County, MT, Teton County, MT
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 4, 6:42 PM MDT | Hail 0.75 | Choteau, MT | |
| Jun 4, 6:55 PM MDT | Hail 0.75 | Choteau, MT | |
| Jun 4, 6:57 PM MDT | Hail 1.25 | Choteau, MT | |
| Jun 4, 7:25 PM MDT | Hail 0.75 | Dutton, 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, 0.2 hours before the alert went out and 138 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.
279 WUUS1 KGTF 050017 RRA SVRGTF MTC073-099-050115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 611 PM MDT WED JUN 4 1997 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 715 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH MONTANA ...CENTRAL PONDERA COUNTY...WESTERN TETON COUNTY AT 610PM MST RADAR INDICATED SEVERE THUNDERSTORMS 10 MILES NORTHWEST OF CHOTEAU WITH ANOTHER NEAR AUGUSTA...MOVING NORTH NORTHEAST AT 25 MPH. THESE STORMS HAVE A HISTORY OF LARGE HAIL. DAMAGING WINDS WERE ALSO LIKELY. THE NORTHERN STORM WILL MOVE THROUGH THE VALIER AREA IN THE NEXT O 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 POSSIBLE 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, 7:14 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton, Toole | 61 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.