Alert archive / Montana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 23, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jun 6, 1997, 5:52 PM MDT for Yellowstone County, Montana. It was in force for 68 min. 1 report 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 6, 1997, 5:52 PM MDT (23:52 UTC)
- Expired
- Jun 6, 1997, 7:00 PM MDT
- In force
- 68 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties
County Yellowstone County, MT
The radar
The Billings radar (KBLX), 27 km from the middle of the area, began a volume at 23:39 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 6, 6:00 PM MDT | Hail 0.75 | Billings, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 6, 2:30 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 11.9 hours before the alert went out and 245 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 986 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KGTF 062351 SVRGTF MTC111-070100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 552 PM MDT FRI JUN 6 1997 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL MONTANA ...YELLOWSTONE COUNTY AT 545 PM...A SEVERE THUNDERSTORM WAS LOCATED 2 MILES SOUTH OF BILLINGS. THIS STORM jWAS MOVING NORTHEAST AT 20 MPH AND WILL AFFECT BILLINGS AND ACTON THROUGH 700 PM. THIS STORM HAS A HISTORY OF PRODUCING DIME SIZE HAIL AND HEAVY RAIN. &
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 6:34 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater | 41 min |
| Jun 6, 2:55 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 50 min |
| Jun 6, 3:45 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 45 min |
| Jun 6, 4:03 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 57 min |
| Jun 6, 4:19 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Judith Basin | 56 min |
| Jun 6, 4:38 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 67 min |
| Jun 6, 5:15 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Chouteau, Fergus | 60 min |
| Jun 6, 5:31 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Judith Basin, Meagher | 59 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; radar from the NEXRAD Level II archive.