Alert archive / Montana / Tornado Warnings in 1989
Tornado Warning 1, NWS Great Falls, MT
NWS Great Falls, MT issued this tornado warning at Jun 15, 1989, 5:13 PM MDT for Cascade County, Montana. It was in force for 62 min.
The area
The counties it named.
The facts
- Issued
- Jun 15, 1989, 5:13 PM MDT (23:13 UTC)
- Expired
- Jun 15, 1989, 6:15 PM MDT
- In force
- 62 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties
County Cascade County, MT
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Great Falls, MT (KGTF), launched 12:00Z, 11.2 hours before the alert went out and 19 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
- 1681 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 146 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 152315
TORGTF
MTC013-160015-
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREAT FALLS MT
513 PM MDT THU JUN 15 1989
THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 615 PM MDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN NORTHWEST MONTANA
...SOUTHERN CASCADE...INCLUDING THE TOWN OF CASCADE AND
HARDY.
AT 5PM LAW ENFORCEMENT PERSONNEL REPORTED A LARGE FUNNEL CLOUD NEAR
THE GATES OF THE MOUNTAINS. THE THUNDERSTORM ASSOCIATED WITH THIS
FUNNEL WAS MOVING TO THE NORTHEAST NEAR 30 MPH.
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 15, 1:09 PM MDT, 4 hours 4 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS, MT 108 PM MDT THU JUN 15 1989 ...WET WEATHER TONIGHT INTO FRIDAY WESTERN HALF OF THE STATE... A MOIST PACIFIC WEATHER SYSTEM IS BEGINNNING TO MOVE INTO WESTERN MONTANA THIS AFTERNOON. BRIEF HEAVY SHOWERS HAVE BEEN REPORTED ALONG THE IDAHO MONTANA BORDER. AS THE WEATHER SYSTEM MOVES FURTHER INTO MONTANA TONIGHT INTO FRIDAY HEAVY SHOWERS ALONG WITH SOME STRONG THUNDERSTORMS COULD DEVELOP IN THE WESTERN HALF OF THE STATE. BECAUSE OF THE POSSIBLITY OF HEAVY PRECIPITATION AND WITH THE GROUND SATURATED IN THE GLACIER PARK AREAS...SOME SMALL STREAM FLOODING IS POSSIBLE ON FRIDAY...MAINLY IN THE GLACIER PARK AREAS EAST OF THE CONTINENTAL DIVIDE. SHOWER ACTIVITY SHOULD DECREASE DURING FRIDAY OVER THE WESTERN HALF OF THE STATE BUT STRONG THUNDERSTORMS MAY DEVELOP IN THE EXTREME EASTERN PART OF MONTANA. OLSEN
Nearby
Tornado Warnings in Montana, 1989Every tornado warning in 1989Tornadoes in 1989
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.