Alert archive / Montana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 35, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jun 29, 1997, 2:53 PM MDT for Gallatin County, Montana. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 29, 1997, 2:53 PM MDT (20:53 UTC)
- Expired
- Jun 29, 1997, 4:00 PM MDT
- In force
- 67 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties
County Gallatin County, MT
The radar
The Billings radar (KBLX), 202 km from the middle of the area, began a volume at 20:53 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 |
|---|---|---|---|
| Jun 29, 2:30 PM MDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 8.9 hours before the alert went out and 218 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
- 2 J/kg
- Mixed-layer CIN
- -305 J/kg
- Mixed-layer LCL
- 833 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
390 WUUS1 KGTF 292054 RRA SVRGTF MTC031-292200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 253 PM MDT SUN JUN 29 1997 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 400 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST MONTANA ...NORTHWESTERN GALLATIN COUNTY AT 250 PM...GREAT FALLS RADAR INDICATED A SEVERE THUNDERSTORM NEAR WILLOW CREEK...30 MILES NORTHWEST OF BOZEMAN. THIS STORM WAS MOVING NORTHEAST AT 35 MPH. IT WILL MOVE NEAR THE COMMUNITIES OF WILLOW CREEK ...THREE FORKS...TRIDENT AND MANHATTAN OVER THE NEXT HOUR. THIS STORM WILL LIKELY PRODUCE HEAVY RAIN...LARGE HAIL AND STRONG GUSTY WIND. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 6:30 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 60 min |
| Jun 28, 7:30 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 45 min |
| Jun 28, 8:20 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 55 min |
| Jun 28, 8:36 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 54 min |
| Jun 29, 3:30 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Meagher | 60 min |
| Jun 29, 4:39 PM MDT | Tornado Warning | TFX | Judith Basin | 36 min |
| Jun 29, 5:18 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 57 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.