Alert archive / Montana / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 8, NWS Great Falls, MT

June 5, 1995Blaine County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at Jun 5, 1995, 5:38 PM MDT for Blaine County, Montana. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
Jun 5, 1995, 5:38 PM MDT (23:38 UTC)
Expired
Jun 5, 1995, 6:45 PM MDT
In force
67 min
Issued by
NWS Great Falls, MT
Area
Whole counties

County Blaine County, MT

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 11.6 hours before the alert went out and 163 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.

Skew-T log-pSkew-T log-p diagram, Great_falls, MT at 12:00Z on 1995-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 46 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Great_falls, MT at 12:00Z on 1995-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
46 J/kg
Mixed-layer CIN
-169 J/kg
Mixed-layer LCL
1320 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KGTF 052339 RRA
SVRGTF
MTC005-060045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREAT FALLS MT
538 PM MDT MON JUN 5 1995
 
THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  645 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL MONTANA
 
   ...SOUTHWESTERN BLAINE COUNTY
 
AT 540 PM MDT RADAR INDICATED A SEVERE THUNDERSTORM MOVING INTO EXTREME
SOUTHWESTERN BLAINE COUNTY OF NORTH CENTRAL MONTANA. THE STORM WAS
LOCATED ALONG THE BLAINE...CHOTEAU COUNTY LINE 40 MILES SOUTH OF HAVRE.
THIS STORM WAS MOVING NORTH-NORTHEAST AT 20 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.
 
B

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 5, 3:45 PM MDT, 1 hour 53 minutes before
MTZ005-006-052245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
345 PM MDT MON JUN 5 1995

...SEVERE THUNDERSTORM WARNING IN EFFECT UNTIL 400 PM FOR CHOTEAU
COUNTY...
...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 800 PM FOR MUCH
OF CENTRAL MONTANA...

AT 340 PM MDT A LINE OF THUNDERSTORMS CONTINUED OVER A LARGE PART OF
CENTRAL AND NORTH CENTRAL MONTANA. THE LINE EXTENDED FROM BIG SANDY...15
INORTHEAST OF FT BENTON...SOUTHWEST TO JUST SOUTHWEST OF STANFORD IN
JUDITH BASIN COUNTY. THE STORMS WERE MOVING NORTHEAST AT 20 TO 25 MPH.

THESE STORMS ARE HAVE PRODUCED HAIL UP TO THREE QUARTERS OF AN INCH(.75
INCHES) IN DIAMETER...DAMAGING WINDS...PERIODS OF VERY HEAVY RAIN AND DE
LLIGHTNING.

IF YOU ARE IN THE PATH OF THESE STORMS BE PREPARED FOR DANGEROUS
WEATHER CONDITIONS. IF THREATENING WEATHER APPROACHES TAKE COVER
IMMEDIATELY.

HW
Special weather statement, Jun 5, 3:46 PM MDT, 1 hour 52 minutes before
MTZ005-006-052245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
345 PM MDT MON JUN 5 1995

...SEVERE THUNDERSTORM WARNING IN EFFECT UNTIL 400 PM FOR CHOTEAU
COUNTY...
...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 800 PM FOR MUCH
OF CENTRAL MONTANA...

AT 340 PM MDT A LINE OF THUNDERSTORMS CONTINUED OVER A LARGE PART OF
CENTRAL AND NORTH CENTRAL MONTANA. THE LINE EXTENDED FROM BIG SANDY...15
INORTHEAST OF FT BENTON...SOUTHWEST TO JUST SOUTHWEST OF STANFORD IN
JUDITH BASIN COUNTY. THE STORMS WERE MOVING NORTHEAST AT 20 TO 25 MPH.

THESE STORMS ARE HAVE PRODUCED HAIL UP TO THREE QUARTERS OF AN INCH(.75
INCHES) IN DIAMETER...DAMAGING WINDS...PERIODS OF VERY HEAVY RAIN &AND DE
LLIGHTNING.

IF YOU ARE IN THE PATH OF THESE STORMS BE PREPARED FOR DANGEROUS
WEATHER CONDITIONS. IF THREATENING WEATHER APPROACHES TAKE COVER
IMMEDIATELY.

HW
Special weather statement, Jun 5, 3:52 PM MDT, 1 hour 46 minutes before
MTZ005-006-052245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
345 PM MDT MON JUN 5 1995

...SEVERE THUNDERSTORM WARNING IN EFFECT UNTIL 400 PM FOR CHOTEAU
COUNTY...
...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 800 PM FOR MUCH
OF CENTRAL MONTANA...

AT 340 PM MDT A LINE OF THUNDERSTORMS CONTINUED OVER A LARGE PART OF
CENTRAL AND NORTH CENTRAL MONTANA. THE LINE EXTENDED FROM BIG SANDY...15
MILES NORTHEAST OF FT BENTON...SOUTHWEST TO JUST SOUTHWEST OF STANFORD IN
JUDITH BASIN COUNTY. THE STORMS WERE MOVING NORTHEAST AT 20 TO 25 MPH.

THESE STORMS ARE HAVE PRODUCED HAIL UP TO THREE QUARTERS OF AN INCH(.75
INCHES) IN DIAMETER...DAMAGING WINDS...PERIODS OF VERY HEAVY .RAIN AND
DEADLY LIGHTNING.

IF YOU ARE IN THE PATH OF THESE STORMS BE PREPARED FOR DANGEROUS
WEATHER CONDITIONS. IF THREATENING WEATHER APPROACHES TAKE COVER
IMMEDIATELY.

HW
Special weather statement, Jun 5, 4:24 PM MDT, 1 hour 14 minutes before
MTZ006-052330-

SPECIAL WEATHER STATEMENT...CORRECTED TIME
NATIONAL WEATHER SERVICE GREAT FALLS MT
424 PM MDT MON JUN 5 1995

...SEVERE THUNDERSTORM WARNING IN EFFECT UNTIL 500 PM MDT FOR EASTERN
CHOTEAU COUNTY... ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 800 PM
MDT FOR MUCH OF CENTRAL MONTANA...

AT 430 PM MDT STRONG THUNDERSTORMS CONTINUED OVER CENTRAL AND EASTERN
CHOTEAU COUNTY OF NORTH CENTRAL MONTANA. THESE LINE OF THUNDERSTORMS
EXTENDED FROM NEAR HAVRE IN HILL COUNTY...SOUTHEAST TO EXTREME SOUTHEAST
CHOUTEAU COUNTY...SOUTH TO NORTHERN MEAGHER COUNTY.

THE STRONGEST STORM WAS LOCATED IN EXTREME SOUTHERN CHOTEAU
COUNTY...10 MILES SOUTHEAST OF GERALDINE.  THE STORMS WERE MOVING
NORTH-NORTH EAST AT 20 MPH.

THESE STORMS HAVE PRODUCED LARGE HAIL...DAMAGING WINDS...PERIODS OF VERY
HEAVY RAIN AND DEADLY LIGHTNING. IF YOU ARE IN THE PATH OF THESE STORMS
BE PREPARED FOR DANGEROUS WEATHER CONDITIONS. TAKE SHELTER IMMEDIATELY
IF THREATENING WEATHER APPROACHES.

HW
Special weather statement, Jun 5, 4:28 PM MDT, 1 hour 10 minutes before
MTZ006-052330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
424 PM MDT MON JUN 5 1995

...SEVERE THUNDERSTORM WARNING IN EFFECT UNTIL 500 PM MDT FOR EASTERN
CHOTEAU COUNTY... ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 800 PM
MDT FOR MUCH OF CENTRAL MONTANA...

AT 430 PM CDT STRONG THUNDERSTORMS CONTINUED OVER CENTRAL AND EASTERN
CHOTEAU COUNTY OF NORTH CENTRAL MONTANA. THESE LINE OF THUNDERSTORMS
EXTENDED FROM NEAR HAVRE IN HILL COUNTY...SOUTHEAST TO EXTREME SOUTHEAST
CHOUTEAU COUNTY...SOUTH TO NORTHERN MEAGHER COUNTY.

THE STRONGEST STORM WAS LOCATED IN EXTREME SOUTHERN CHOTEAU
COUNTY...10 MILES SOUTHEAST OF GERALDINE.  THE STORMS WERE MOVING
NORTH-NORTH EAST AT 20 MPH.

THESE STORMS HAVE PRODUCED LARGE HAIL...DAMAGING WINDS...PERIODS OF VERY
HEAVY RAIN AND DEADLY LIGHTNING. IF YOU ARE IN THE PATH OF THESE STORMS
BE PREPARED FOR DANGEROUS WEATHER CONDITIONS. TAKE SHELTER IMMEDIATELY
IF THREATENING WEATHER APPROACHES.

HW
Special weather statement, Jun 5, 4:34 PM MDT, 1 hour 4 minutes before
MTZ006-052330-

SPECIAL WEATHER STATEMENT...CORRECTED TIME
NATIONAL WEATHER SERVICE GREAT FALLS MT
424 PM MDT MON JUN 5 1995

...SEVERE THUNDERSTORM WARNING IN EFFECT UNTIL 500 PM MDT FOR EASTERN
CHOTEAU COUNTY... ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 800 PM
MDT FOR MUCH OF CENTRAL MONTANA...

AT 430 PM MDT STRONG THUNDERSTORMS CONTINUED OVER CENTRAL AND EASTERN
CHOTEAU COUNTY OF NORTH CENTRAL MONTANA. THESE LINE OF THUNDERSTORMS
EXTENDED FROM NEAR HAVRE IN HILL COUNTY...SOUTHEAST TO EXTREME SOUTHEAST
CHOUTEAU COUNTY...SOUTH TO NORTHERN MEAGHER COUNTY.

THE STRONGEST STORM WAS LOCATED IN EXTREME SOUTHERN CHOTEAU
COUNTY...10 MILES SOUTHEAST OF GERALDINE.  THE STORMS WERE MOVING
NORTH-NORTH EAST AT 20 MPH.

THESE STORMS HAVE PRODUCED LARGE HAIL...DAMAGING WINDS...PERIODS OF VERY
HEAVY RAIN AND DEADLY LIGHTNING. IF YOU ARE IN THE PATH OF THESE STORMS
BE PREPARED FOR DANGEROUS WEATHER CONDITIONS. TAKE SHELTER IMMEDIATELY
IF 2THREATENING WEATHER APPROACHES.

HW

The office that day

Everything else NWS Great Falls, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 5, 12:35 PM MDTSevere Thunderstorm WarningTFXTeton55 min
Jun 5, 12:46 PM MDTSevere Thunderstorm WarningTFXCascade59 min
Jun 5, 2:53 PM MDTSevere Thunderstorm WarningTFXChouteau67 min
Jun 5, 4:01 PM MDTSevere Thunderstorm WarningTFXChouteau59 min
Jun 5, 4:59 PM MDTSevere Thunderstorm WarningTFXChouteau61 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.