Alert archive / Montana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 72, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Aug 28, 1997, 8:06 PM MDT for Judith Basin County, Meagher County, Montana. It was in force for 54 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
- Aug 28, 1997, 8:06 PM MDT (02:06 UTC)
- Expired
- Aug 28, 1997, 9:00 PM MDT
- In force
- 54 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties
Counties Judith Basin County, MT, Meagher County, MT
The radar
The Great Falls radar (KTFX), 94 km from the middle of the area, began a volume at 02:06 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 |
|---|---|---|---|
| Aug 28, 8:30 PM MDT | Hail 1.5 | Hobson, 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, 2.1 hours before the alert went out and 71 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
- 52 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 3129 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
648 WUUS1 KGTF 290209 RRA SVRGTF MTC045-059-290300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 806 PM MDT THU AUG 28 1997 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 900 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN CENTRAL MONTANA ...SOUTHWESTERN JUDITH BASIN COUNTY IN SOUTHWEST MONTANA ...NORTHEASTERN MEAGHER COUNTY AT 800 PM...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM MOVING ACROSS NORTHEASTERN MEAGHER COUNTY. THIS STORM MAY PRODUCE LARGE HAIL...GUSTY WINDS AND BRIEF HEAVY RAIN. IT WAS MOVING TO THE NORTHEAST AT 35 TO 40 MPH AND SHOULD MOVE INTO SOUTHWESTERN JUDITH BASIN COUNTY WITHIN THE NEXT HALF HOUR.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Aug 28, 3:00 PM MDT, 5 hours 6 minutes before
MTZALL-290500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 300 PM MDT THU AUG 28 1997 ...LABOR DAY WEEKEND FORECAST FOR MONTANA... .SUNDAY AND LABOR DAY...SCATTERED...MAINLY AFTERNOON AND EVENING... ...SHOWERS AND THUNDERSTORMS. LOWS IN THE 40S WEST TO THE 50S EAST. HIGHS IN THE 70S AND LOWER 80S WEST...85 TO 95 EAST.
Special weather statement, Aug 28, 3:06 PM MDT, 5 hours before
MTZALL-290500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 300 PM MDT THU AUG 28 1997 ...LABOR DAY WEEKEND FORECAST FOR MONTANA... .SUNDAY AND LABOR DAY...SCATTERED...MAINLY AFTERNOON AND EVENING... ...SHOWERS AND THUNDERSTORMS. LOWS IN THE 40S WEST TO THE 50S EAST. HIGHS IN THE 70S AND LOWER 80S WEST...85 TO 95 EAST.
Local storm report, Aug 28, 3:55 PM MDT, 4 hours 11 minutes before
PRELIMINARY LOCAL STORM REPORT NATIONAL WEATHER SERVICE GREAT FALLS MT 350 PM MDT THU AUG 28 1997 TIME(MDT) ......CITY LOCATION...... MT ...EVENT............. DATE(MDT) ......COUNTY LOCATION.... ...REMARKS........... 530 PM WINDAM MT 1.00 INCH HAIL 08/27/97 JUDITH BASIN
Local storm report, Aug 28, 3:56 PM MDT, 4 hours 10 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION FOR LOCATION NATIONAL WEATHER SERVICE GREAT FALLS MT 356 PM MDT THU AUG 28 1997 TIME(MDT) ......CITY LOCATION...... MT ...EVENT............. DATE(MDT) ......COUNTY LOCATION.... ...REMARKS........... 530 PM WINDHAM MT 1.00 INCH HAIL 08/27/97 JUDITH BASIN
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 6:50 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau | 40 min |
| Aug 28, 9:40 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 50 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.