Alert archive / Montana / Tornado Warnings in 1992
Tornado Warning 1, NWS Great Falls, MT
NWS Great Falls, MT issued this tornado warning at Jun 26, 1992, 4:18 PM MDT for Chouteau County, Montana. It was in force for 57 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
- Jun 26, 1992, 4:18 PM MDT (22:18 UTC)
- Expired
- Jun 26, 1992, 5:15 PM MDT
- In force
- 57 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties
County Chouteau County, MT
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 26, 5:00 PM MDT | Tornado F0 | Chouteau, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Great Falls, MT (KGTF), launched 12:00Z, 10.3 hours before the alert went out and 79 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
- 281 J/kg
- Mixed-layer CIN
- -137 J/kg
- Mixed-layer LCL
- 1710 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 44 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 262225 COR TORGTF MTC013-015-262315- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 418 PM MDT FRI JUN 26 1992 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 515 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTH CENTRAL MONTANA ...WESTERN CHOUTEAU COUNTY A WEATHER SPOTTER IN WESTERN CHOUTEAU COUNTY REPORTED A TORNADO ON THE GROUND AROUND 4 PM. THE THUNDERSTORM PRODUCING THIS TORNADO IS MOVING SLOWLY TOWARD THE SOUTHEAST. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS... OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS.
What forecasters said that day
The local office's own words before this tornado 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 26, 11:54 AM MDT, 4 hours 24 minutes before
MTZ004-252000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HELENA MT NOON MDT FRI JUN 26 1992 ..STRONG THUNDERSTORMS ARE FORMING OVER SOUTHWEST MONTANA... AT NOON PM MDT...WEATHER RADAR WAS INDICATING A STRONG THUNDERSTORM FORMING ALONG THE CONTINENTAL DIVIDE IN NORTH CENTRAL LEWIS AND CLARK COUNTY OF SOUTHWEST MONTANA. THIS THUNDERSTORM WAS NORTH OF ROGERS PASS JUST ALONG THE EAST SIDE OF THE SCAPEGOAT WILDERNESS AREA OF THE HELENA NATIONAL FOREST. ANOTHER THUNDERSTORM HAD FORMED JUST SOUTH OF RIMINI ALONG THE SOUTHERN TIP OF LEWIS AND CLARK COUNTY IN SOUTHWEST MONTANA. THIS THUNDERSTORM WAS NEAR RED MOUNTAIN IN THE HELENA NATIONAL FOREST AS WELL. BOTH THUNDERSTORMS WERE PRODUCING VERY DANGEROUS LIGHTNING STRIKES. PERSONS OUTDOORS SHOULD SEEK SHELTER IMMEDIATELY FROM THE DEADLY LIGHTNING. < THUNDERSTORMS WILL CONTINUE TO FORM THIS AFTERNOON ACROSS SOUTHWEST MONTANA. THE THUNDERSTORMS MAY PRODUCE VERY HEAVY RAINFALL DUE TO THE SLOW MOVEMENT OF THE STORMS AND THE HEAVY MOISTURE IN THE ATMOSPHERE. ADDITIONALLY STORMS MAY PRODUCE HAIL AND STRONG GUSTY WINDS. PERSONS NEAR THE CITY OF RIMINI AND ALSO NORTH OF ROGERS PASS ...BOTH IN LEWIS AND CLARK COUNTY OF SOUTHWEST MONTANA...SHOULD BE AWARE OF POSSIBLE STREAM FLOODING OR PONDING OF WATER ON ROADWAYS. MHOON
Special weather statement, Jun 26, 2:09 PM MDT, 2 hours 9 minutes before
MTZ004-252200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HELENA MT 2:00 PM MDT FRI JUN 26 1992 ..THUNDERSTORMS CONTINUE TO FORM OVER SOUTHWEST MONTANA... AT 2 PM MDT...WEATHER RADAR WAS INDICATING AREAS OF SCATTERED THUNDERSTORMS ACROSS SOUTHWEST MONTANA. THUNDERSTORMS WERE SCATTERED IN AREA ALONG THE CONTINETAL DIVIDE FROM NEAR HEART BUTTE...WHICH IS NEAR THE BORDER OF THE BLACKFOOT INDIAN RESERVATION...SOUTH ALONG THE DIVIDE TO JUST NORTH OF BOULDER IN JEFFERSON COUNTY...IN THE ELKHORN MOUNTAINS OF THE HELENA NATIONAL FOREST. ALL THUNDERSTORMS WERE PRODUCING VERY DANGEROUS LIGHTNING STRIKES. PERSONS OUTDOORS SHOULD SEEK SHELTER IMMEDIATELY FROM THE DEADLY LIGHTNING. THE THUNDERSTORMS WERE MOVING VERY SLOWLY. ANY RAINFALL WITH THUNDERSTORMS COULD BE HEAVY IN ONE AREA BECAUSE OF THE SLOW MOVEMENT OF THE STORMS. STORMS MAY DEVELOP TO BECOME STRONG ENOUGH TO PRODUCE EITHER HAIL OR STRONG GUSTY WINDS LATER THIS AFTERNOO:N. SCATTERED THUNDERSTORMS WILL CONTINUE TO FORM THIS AFTERNOON ACROSS SOUTHWEST MONTANA. MHOON
Special weather statement, Jun 26, 3:53 PM MDT, 25 minutes before
MTZ003-262300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 345 PM MDT FRI JUN 26 1992 A WEATHER OBSERVER 30 MILES NORTHEAST OF GREAT FALLS IN WESTERN CHOUTEAU COUNTY REPORTED A VERY STRONG THUNDERSTORM AROUND 330 PM MDT. THE STORM PRODUCED VERY HEAVY RAINFALL AND MARBLE SIZE HAIL. RADAR INDICATES THAT THIS THUNDERSTORM IS MOVING VERY SLOWLY TO THE SOUTHEAST AT AROUND 10 MPH. THIS STORM WILL CONTINUE TO PRODUCE HEAVY RAINFZALL FOR THE NEXT FEW HOURS WHICH COULD CAUSE SOME LOCAL FLOODING OF ROADWAYS. IF DRIVING INTO ANY OF THE THUNDERSTORMS THIS AFTERNOON BE PREPARED FOR LOW VISIBILITY DUE TO THE HEAVY RAINFALL. SIMS
Nearby
Tornado Warnings in Montana, 1992Every tornado warning in 1992Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.