Alert archive / Montana / Severe Thunderstorm Warnings in 1995
Severe Thunderstorm Warning 63, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jul 11, 1995, 3:56 PM MDT for Petroleum County, Montana. It was in force for 64 min.
The area
The counties it named.
The facts
- Issued
- Jul 11, 1995, 3:56 PM MDT (21:56 UTC)
- Expired
- Jul 11, 1995, 5:00 PM MDT
- In force
- 64 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties
County Petroleum County, MT
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 9.9 hours before the alert went out and 174 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
- 21 J/kg
- Mixed-layer CIN
- -354 J/kg
- Mixed-layer LCL
- 1534 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 68 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 112157 SVRGTF MTC069-112300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 356 PM MDT TUE JUL 11 1995 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 500 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTH CENTRAL MONTANA ...PETROLEUM COUNTY THE GREAT FALLS NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES A VERY STRONG THUNDERSTORM 35 MILES EAST OF LEWISTOWN MOVING TOWARDS THE EAST-NORTHEAST AT ABOUT 354 MPH. IT SHOULD BE ENTERING PETROLEUM COUNTY VERY SOON. 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, Jul 11, 11:01 AM MDT, 4 hours 55 minutes before
MTZ001-111800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 1101 AM MDT TUE JUL 11 1995 ...THUNDERSTORMS CONTINUE ACROSS NORTHWEST MONTANA...EAST OF THE CONTINENTAL DIVIDE... AT 11:00 AM...DOPPLER WEATHER RADAR IN GREAT FALLS INDICATE SEVERAL THUNDERSTORMS MOVING ACROSS NORTHERN LEWIS AND CLARK...TETON...PONDERA AND EASTERN TOOLE COUNTIES...THESE THUNDERSTORMS WERE MOVING RAPIDLY TO THE NORTHEAST AT 45 MPH. THE STRONGEST THUNDERSTORM WAS IN THE CHOTEAU AREA. A WEATHER SPOTTER REPORTED HEAVY RAIN AND FREQUENT LIGHTNING. THUNDERSTORMS WILL CONTINUE THROUGH EARLY THIS AFTERNOON. SOME MAY CONTAIN BRIEF HEAVY RAIN...SMALL HAIL...GUSTY WINDS AND FREQUENT LIGHTNING. WILLIAMSON DC &
Special weather statement, Jul 11, 11:02 AM MDT, 4 hours 54 minutes before
MTZ001-111800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 1101 AM MDT TUE JUL 11 1995 ...THUNDERSTORMS CONTINUE ACROSS NORTHWEST MONTANA...EAST OF THE CONTINENTAL DIVIDE... AT 11:00 AM...DOPPLER WEATHER RADAR IN GREAT FALLS INDICATE SEVERAL THUNDERSTORMS MOVING ACROSS NORTHERN LEWIS AND CLARK...TETON...PONDERA AND EASTERN TOOLE COUNTIES...THESE THUNDERSTORMS WERE MOVING RAPIDLY TO THE NORTHEAST AT 45 MPH. THE STRONGEST THUNDERSTORM WAS IN THE CHOTEAU AREA. A WEATHER SPOTTER REPORTED HEAVY RAIN AND FREQUENT LIGHTNING. THUNDERSTORMS WILL CONTINUE THROUGH EARLY THIS AFTERNOON. SOME MAY CONTAIN BRIEF HEAVY RAIN...SMALL HAIL...GUSTY WINDS AND FREQUENT LIGHTNING. WILLIAMSON DC &
Local storm report, Jul 11, 12:00 PM MDT, 3 hours 56 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS, MT
1200 PM MDT TUE JUL 11 1995
DELAYED REPORT FROM JUL 11 1995
0615PM 8 NE MOCCASIN(KOLIN) MT GOLF BALL AND LARGER HAIL
JUDITH BASIN BROKE WINDOWS/TREES DOWN/
70-80 PERCENT CROP LOSS.Local storm report, Jul 11, 12:05 PM MDT, 3 hours 51 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS, MT
1200 PM MDT TUE JUL 11 1995
DELAYED REPORT FROM JUL 11 1995
0615PM 8 NE MOCCASIN(KOLIN) MT GOLF BALL AND LARGER HAIL
JUDITH BASIN BROKE WINDOWS/TREES DOWN/
70-80 PERCENT CROP LOSS.Special weather statement, Jul 11, 12:06 PM MDT, 3 hours 50 minutes before
MTZ003-004-005-111915- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 1206 PM MDT TUE JUL 11 1995 ...THUNDERSTORMS CONTINUE OVER NORTH CENTRAL MONTANA... AT 1205 PM...DOPPLER RADAR IN GREAT FALLS INDICATED THUNDERSTORMS CONTINUING OVER CENTRAL TETON THROUGH EASTERN LIBERTY COUNTIES. THE STRONGEST STORM IN THIS AREA WAS JUST SOUTH OF CHESTER. THESE STORMS WILL AFFECT AREAS FROM WESTERN HILL COUNTY...THROUGH THE SHELBY...CHESTER...AND CONRAD AREAS THROUGH 1 PM. ANOTHER STORM WAS NORTHWEST OF DEER LODGE. THIS STORM WILL MOVE TO THE AUGUSTA AREA BY 1 PM. ALL THE STORMS WERE MOVING NORTHEAST AT 45 MPH. THUNDERSTORMS WILL CONTINUE TO DEVELOP AND MOVE ACROSS THE AREA THIS AFTERNOON. SOME WILL CONTAIN BRIEF HEAVY RAIN...HAIL...GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING. DB
Special weather statement, Jul 11, 12:07 PM MDT, 3 hours 49 minutes before
MTZ003-004-005-111915- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 1206 PM MDT TUE JUL 11 1995 ...THUNDERSTORMS CONTINUE OVER NORTH CENTRAL MONTANA... AT 1205 PM...DOPPLER RADAR IN GREAT FALLS INDICATED THUNDERSTORMS CONTINUING OVER CENTRAL TETON THROUGH EASTERN LIBERTY COUNTIES. THE STRONGEST STORM IN THIS AREA WAS JUST SOUTH OF CHESTER. THESE STORMS WILL AFFECT AREAS FROM WESTERN HILL COUNTY...THROUGH THE SHELBY...CHESTER...AND CONRAD AREAS THROUGH 1 PM. ANOTHER STORM WAS NORTHWEST OF DEER LODGE. THIS STORM WILL MOVE TO THE AUGUSTA AREA BY 1 PM. ALL THE STORMS WERE MOVING NORTHEAST AT 45 MPH. THUNDERSTORMS WILL CONTINUE TO DEVELOP AND MOVE ACROSS THE AREA THIS AFTERNOON. SOME WILL CONTAIN BRIEF HEAVY RAIN...HAIL...GUSTY WINDS AND FREQUENT DANGEROUS LIGHTNING. DB
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 6:35 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Fergus, Judith Basin | 55 min |
| Jul 11, 1:35 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 55 min |
| Jul 11, 2:03 PM MDT | Tornado Warning | TFX | Cascade | 27 min |
| Jul 11, 2:35 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Judith Basin | 55 min |
| Jul 11, 3:04 PM MDT | Severe Thunderstorm Warning | TFX | Meagher | 56 min |
| Jul 11, 3:15 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Fergus | 60 min |
| Jul 11, 3:28 PM MDT | Tornado Warning | TFX | Meagher | 32 min |
| Jul 11, 3:38 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Judith Basin | 82 min |
| Jul 11, 3:52 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater, Meagher | 68 min |
| Jul 11, 4:36 PM MDT | Severe Thunderstorm Warning | TFX | Blaine | 54 min |
| Jul 11, 4:53 PM MDT | Severe Thunderstorm Warning | TFX | Judith Basin | 46 min |
| Jul 11, 4:53 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 67 min |
| Jul 11, 5:28 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 62 min |
Nearby
Severe Thunderstorm Warnings in Montana, 1995Every severe thunderstorm warning in 1995
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.