Alert archive / Montana / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 8, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jun 30, 1998, 5:12 PM MDT for Meagher County, Montana. It was in force for 48 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 30, 1998, 5:12 PM MDT (23:12 UTC)
- Expired
- Jun 30, 1998, 6:00 PM MDT
- In force
- 48 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties
County Meagher County, MT
The nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 11.2 hours before the alert went out and 98 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
- -201 J/kg
- Mixed-layer LCL
- 1172 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -48 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
475 WUUS1 KGTF 302314 RRA SVRGTF MTC059-010000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 512 PM MDT TUE JUN 30 1998 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN MEAGHER COUNTY IN CENTRAL MONTANA * UNTIL 600 PM MDT * AT 510 PM MDT... DOPPLER RADAR AT GREAT FALLS INDICATED A SEVERE THUNDERSTORM 41 MILES NORTHWEST OF WHITE SULPHUR SPRINGS OR 26 MILES NORTHWEST OF FT LOGAN MOVING EAST AT 25 MPH. * THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS.
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 2:15 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 60 min |
| Jun 30, 4:23 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Lewis and Clark | 57 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; the sounding from the Mesonet's radiosonde archive.