Alert archive / Montana / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 9, NWS Great Falls, MT

June 6, 1995Blaine County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at Jun 6, 1995, 3:29 PM MDT for Blaine County, Montana. It was in force for 61 min.

The area

The counties it named.

The facts

Issued: Jun 6, 1995, 3:29 PM MDT (21:29 UTC)
Expired: Jun 6, 1995, 4:30 PM MDT
In force: 61 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, 9.5 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 547 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 82 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 062128 RRA
SVRGTF
MTC005-062230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREAT FALLS MT
329 PM MDT TUE JUN 6 1995
 
THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL MONTANA
 
   ...NORTHERN BLAINE COUNTY
 
AT 329 PM MDT RADAR INDICATED A SEVERE THUNDERSTORM OVER NORTHERN BLAINE
COUNTY OF NORTH CENTRAL MONTANA...3 MILES SOUTH OF HARLEM. THE STORM WAS
MOVING WEST AT 15 MPH AND WILL AFFECT COMMUNITIES OF CHINOOK AND ZURICH
DURING THE NEXT HOUR.
 
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.
 
 
 
HW

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 6, 10:32 AM MDT, 4 hours 57 minutes before

MTZ003-005-006-061730-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1033 AM MDT TUE JUN 6 1995

...THUNDERSTORMS WITH HEAVY RAIN CONTINUE OVER NORTH CENTRAL MONTANA...

AT 1032AM...WEATHER RADAR INDICATED A LARGE AREA OF SHOWERS AND
THUNDERSTORMS OVER CENTRAL AND NORTHERN MONTANA.  THE STRONGEST
THUNDERSTORMS WERE JUST SOUTH OF THE CANADIAN BORDER BETWEEN HAVRE AND
CUT BANK.  THEY WERE MOVING TO THE WEST NORTHWEST AROUND 25 MPH.

THESE STORMS WILL LIKELY PRODUCE BRIEF PERIODS OF HEAVY RAIN...GUSTY
WINDS TO 45 MPH AND SMALL HAIL.

THIS IS PART OF A LARGER AREA OF STEADY RAINFALL OVER CENTRAL MONTANA.
THE LARGER AREA WAS GENERALLY NORTH OF THE MISSOURI RIVER FROM GREAT
FALLS TO LEWISTOWN.  THIS TOO WAS MOVING TO THE WEST NORTHWEST AROUND 25
MPH.  HEAVY RAIN HAS FALLEN ACROSS MANY LOCATIONS OF CENTRAL AND
NORTHERN MONTANA.  FLOOD WARNINGS ARE IN EFFECT FOR MANY LOCATIONS.

THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER CENTRAL MONTANA.  COOL AIR
OVER WESTERN MONTANA IS CLASHING WITH WARM AND UNSTABLE AIR OVER EAST
MONTANA.  THUNDERSTORMS WILL DEVELOP IN AN AREA FROM EAST OF LEWISTOWN
TO HAVRE AND MOVE SLOWLY TO THE NORTHWEST.  SOME OF THESE WILL CONTAIN
HAIL AND GUSTY WINDS.

BEWARE OF FLOODED ROADWAYS...DO NOT DRIVE ACROSS FLOODED ROADS IF YOU
ARE UNSURE OF THE DEPTH OF THE WATER.  WITH THE SLOW MOVEMENT OF TODAYS
STORMS...FLOODING WILL CONTINUE TO BE A RISK.

REMEMBER LIGHTNING IS THE MOST DEADLY ELEMENT OF A THUNDERSTORM.  IF
CAUGHT OUTDOORS...MOVE TO A PLACE OF SAFETY.

DWB

Special weather statement, Jun 6, 10:33 AM MDT, 4 hours 56 minutes before

MTZ003-005-006-061730-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1033 AM MDT TUE JUN 6 1995

...THUNDERSTORMS WITH HEAVY RAIN CONTINUE OVER NORTH CENTRAL MONTANA...

AT 1032AM...WEATHER RADAR INDICATED A LARGE AREA OF SHOWERS AND
THUNDERSTORMS OVER CENTRAL AND NORTHERN MONTANA.  THE STRONGEST
THUNDERSTORMS WERE JUST SOUTH OF THE CANADIAN BORDER BETWEEN HAVRE AND
CUT BANK.  THEY WERE MOVING TO THE WEST NORTHWEST AROUND 25 MPH.

THESE STORMS WILL LIKELY PRODUCE BRIEF PERIODS OF HEAVY RAIN...GUSTY
WINDS TO 45 MPH AND SMALL HAIL.

THIS IS PART OF A LARGER AREA OF STEADY RAINFALL OVER CENTRAL MONTANA.
THE LARGER AREA WAS GENERALLY NORTH OF THE MISSOURI RIVER FROM GREAT
FALLS TO LEWISTOWN.  THIS TOO WAS MOVING TO THE WEST NORTHWEST AROUND 25
MPH.  HEAVY RAIN HAS FALLEN ACROSS MANY LOCATIONS OF CENTRAL AND
NORTHERN MONTANA.  FLOOD WARNINGS ARE IN EFFECT FOR MANY LOCATIONS.

THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER CENTRAL MONTANA.  COOL AIR
OVER WESTERN MONTANA IS CLASHING WITH WARM AND UNSTABLE AIR OVER EAST
MONTANA.  THUNDERSTORMS WILL DEVELOP IN AN AREA FROM EAST OF LEWISTOWN
TO HAVRE AND MOVE SLOWLY TO THE NORTHWEST.  SOME OF THESE WILL CONTAIN
HAIL AND GUSTY WINDS.

BEWARE OF FLOODED ROADWAYS...DO NOT DRIVE ACROSS FLOODED ROADS IF YOU
ARE UNSURE OF THE DEPTH OF THE WATER.  WITH THE SLOW MOVEMENT OF TODAYS
STORMS...FLOODING WILL CONTINUE TO BE A RISK.

REMEMBER LIGHTNING IS THE MOST DEADLY ELEMENT OF A THUNDERSTORM.  IF
CAUGHT OUTDOORS...MOVE TO A PLACE OF SAFETY.

DWB

Local storm report, Jun 6, 10:48 AM MDT, 4 hours 41 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS, MT
1048 AM MDT TUE JUN 06 1995

DATE/TIME       LOCATION/EVENT

05/1100         TIMES ESTIMATED FAIRFIELD REPORTED TREE IN PARK KNOCKED
   1300         DOWN...PLUS BRANCHES...FARMER WEST OF FAIRFIELD HAD IRRIGATION
                PIPES AND WHEELS DAMAGED.
05/1430         GOLF BALL SIZE HAIL PLUS ROOF DAMAGE AT FORT BENTON
   1500

END

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Local storm report, Jun 6, 10:53 AM MDT, 4 hours 36 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS, MT
1048 AM MDT TUE JUN 06 1995

DATE/TIME       LOCATION/EVENT

05/1100         TIMES ESTIMATED FAIRFIELD REPORTED TREE IN PARK KNOCKED
   1300         DOWN...PLUS BRANCHES...FARMER WEST OF FAIRFIELD HAD IRRIGATION
                PIPES AND WHEELS DAMAGED.
05/1430         GOLF BALL SIZE HAIL PLUS ROOF DAMAGE AT FORT BENTON
   1500

END

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 5:05 AM MDT	Flash Flood Warning	TFX	Beaverhead, Madison	12 hr
Jun 6, 5:05 AM MDT	Flash Flood Warning	TFX	Broadwater, Gallatin, Jefferson, Lewis and Clark	12 hr
Jun 6, 5:05 AM MDT	Flash Flood Warning	TFX	Carbon, Park, Stillwater	12 hr
Jun 6, 5:05 AM MDT	Flash Flood Warning	TFX	Cascade, Teton	12 hr
Jun 6, 5:05 AM MDT	Flash Flood Warning	TFX	Sweet Grass	12 hr

Nearby

Severe Thunderstorm Warnings in Montana, 1995 Every 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.