Alert archive / Montana / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 52, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jul 5, 1998, 5:00 PM MDT for Liberty County, Toole County, Montana. It was in force for 65 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
- Jul 5, 1998, 5:00 PM MDT (23:00 UTC)
- Expired
- Jul 5, 1998, 6:05 PM MDT
- In force
- 65 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties
Counties Liberty County, MT, Toole County, MT
The radar
The Great Falls radar (KTFX), 128 km from the middle of the area, began a volume at 23:03 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 |
|---|---|---|---|
| Jul 5, 5:40 PM MDT | Hail 0.75 | Chester, 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 12:00Z, 11.0 hours before the alert went out and 140 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
- 1987 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
564 WUUS1 KGTF 052304 RRA SVRGTF MTC051-101-060005- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 500 PM MDT SUN JUL 5 1998 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL AND SOUTHERN LIBERTY COUNTY IN NORTH CENTRAL MONTANA SOUTHEASTERN TOOLE COUNTY IN NORTH CENTRAL MONTANA * UNTIL 605 PM MDT * AT 500 PM MDT... DOPPLER RADAR AT GREAT FALLS INDICATED A SEVERE THUNDERSTORM 16 MILES WEST OF CHESTER OR 4 MILES WEST OF LOTHAIR MOVING EAST AT 25 MPH. * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE... LOTHAIR... TIBER DAM AREA AND CHESTER.
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 6:00 PM MDT | Severe Thunderstorm Warning | TFX | Toole | 65 min |
| Jul 4, 6:05 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 65 min |
| Jul 4, 7:05 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Pondera | 60 min |
| Jul 4, 7:12 PM MDT | Severe Thunderstorm Warning | TFX | Toole | 58 min |
| Jul 4, 9:31 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Toole | 64 min |
| Jul 5, 3:45 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 60 min |
| Jul 5, 4:15 PM MDT | Severe Thunderstorm Warning | TFX | Toole | 45 min |
| Jul 5, 4:50 PM MDT | Severe Thunderstorm Warning | TFX | Teton | 60 min |
| Jul 5, 5:37 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau | 63 min |
Nearby
Severe Thunderstorm Warnings in Montana, 1998Every severe thunderstorm warning in 1998
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.