Alert archive / Montana / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 1, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at Jun 12, 1992, 5:14 PM MDT for Mineral County, Montana. It was in force for 61 min.
The area
The counties it named.
The facts
- Issued
- Jun 12, 1992, 5:14 PM MDT (23:14 UTC)
- Expired
- Jun 12, 1992, 6:15 PM MDT
- In force
- 61 min
- Issued by
- NWS Missoula, MT
- Area
- Whole counties
County Mineral County, MT
The nearest sounding before it
Spokane Intl Airport, WA (KGEG), launched 12:00Z, 11.2 hours before the alert went out and 196 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
- 0 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 170 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 122316 SVRMSO MTC061-130015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MISSOULA MT ISSUED BY GREAT FALLS MT 514 PM MDT FRI JUN 12 1992 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 615 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION...... IN WEST CENTRAL MONTANA ...CENTRAL MINERAL COUNTY GOLF BALL SIZE HAIL REPORTED BY SHERIFFS OFFICE AT 5:10 P.M. AT SUPERIOR MONTANA. THE STORM IS MOVING NORTH AT 25 MPH. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
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, Jun 12, 3:56 PM MDT, 1 hour 18 minutes before
MT-002-120025- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MISSOULA MT 345 PM MDT FRI JUN 12 1992 AT 330 PM MDT RADAR SHOWED A LARGE AREA OF SHOWERS AND THUNDERSTORMS. THIS AREA WAS 135 MILES WIDE AND EXTENDED FROM GRANGEVILLE IDAHO THROUGH MISSOULA TO NEAR LEWISTOWN MONTANA. THUNDERSTORM MOVEMENT WAS TO THE NORTH AT 25 TO 30 MILES AN HOUR. THE AREA WAS EXPANDING IN SIZE AND SHOWED LITTLE MOVEMENT. SOME OF THESE THUNDERSTORMS CONTAIN STRONG WINDS...LOCALLY HEAVY RAIN AND HAIL. THUNDERSTORM DEVELOPMENT WILL CONTINUE THIS EVENING AND TONIGHT. EXPECT STRONG SHIFTING WINDS UP TO 45 MILES AN HOUR...LOCALLY HEAVY RAIN AND HAIL WITH THESE STORMS UNTIL AROUND MIDNIGHT. SHOWERS WILL CONTINUE ON SATURDAY. BROCK
Special weather statement, Jun 12, 4:40 PM MDT, 34 minutes before
MT-002-120025- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MISSOULA MT 430 PM MDT FRI JUN 12 1992 AT 430 PM MDT RADAR SHOWED A LARGE AREA OF SHOWERS AND THUNDERSTORMS CONTINUED TO RUMBLE THROUGH. MODERATE TO HEAVY RAINFALL WITH FREQUENT CLOUD TO GROUND LIGHTNING STRIKES ACCOMPANIED THESE STORMS. MARBLE SIZE HAIL WAS REPORTED AT 4:30 PM MDT BY AN OBSERVER IN THE RATTLESNAKE AREA OF NORTH MISSOULA. THE STRONGEST STORM WAS 35 MILES WEST OF MISSOULA MOVING NORTH AT 30 MILES AN HOUR. HOWEVER MANY OF THESE STORMS CONTAIN STRONG WINDS... HEAVY RAIN...HAIL AND LIGHTNING. THIS DEVELOPMENT WILL CONTINUE THIS EVENING AND TONIGHT. EXPECT STRONG SHIFTING WINDS UP TO 45 MILES AN HOUR...LOCALLY HEAVY RAIN AND HAIL WITH THESE STORMS UNTIL AROUND MIDNIGHT. SHOWERS WILL CONTINUE ON SATURDAY. BROCK
Special weather statement, Jun 12, 4:44 PM MDT, 30 minutes before
MT-002-120025- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MISSOULA MT 430 PM MDT FRI JUN 12 1992 AT 430 PM MDT RADAR SHOWED A LARGE AREA OF SHOWERS AND THUNDERSTORMS CONTINUED TO RUMBLE THROUGH. THE AREA WAS 150 MILES WIDE AND EXTENDED FROM SPOKANE WASHINGTON TO NEAR LEWISTOWN MONTANA. HEAVY RAIN WITH FREQUENT LIGHTNING STRIKES ACCOMPANIED THESE STORMS. MARBLE SIZE HAIL WAS REPORTED AT 4:30 PM MDT BY AN OBSERVER IN THE RATTLESNAKE AREA OF NORTH MISSOULA. THE STRONGEST STORM WAS 60 MILES WEST OF MISSOULA MOVING NORTH AT 30 MILES AN HOUR. HOWEVER MANY OF THESE STORMS CONTAIN STRONG WINDS... HEAVY RAIN...HAIL AND LIGHTNING. THIS DEVELOPMENT WILL CONTINUE THIS EVENING AND TONIGHT. EXPECT STRONG SHIFTING WINDS UP TO 45 MILES AN HOUR...LOCALLY HEAVY RAIN AND HAIL WITH THESE STORMS UNTIL AROUND MIDNIGHT. SHOWERS WILL CONTINUE ON SATURDAY. BROCK
Nearby
Severe Thunderstorm Warnings in Montana, 1992Every severe thunderstorm warning in 1992
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.