Alert archive / Montana / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 9, NWS Missoula, MT

June 18, 1995Missoula County, Powell County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 18, 1995, 3:17 PM MDT for Missoula County, Powell County, Montana. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
Jun 18, 1995, 3:17 PM MDT (21:17 UTC)
Expired
Jun 18, 1995, 4:00 PM MDT
In force
43 min
Issued by
NWS Missoula, MT
Area
Whole counties

Counties Missoula County, MT, Powell County, MT

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 9.3 hours before the alert went out and 221 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 1995-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1995-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -76 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1130 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
-76 m²/s²
0-3 km storm-relative helicity
-110 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 KMSO 182116 RRA
SVRMSO
MTC063-077-182215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
317 PM MDT SUN JUN 18 1995
 
THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  415 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...S...
 
IN WEST CENTRAL MONTANA
 
   ...EASTERN MISSOULA COUNTY...WESTERN POWELL COUNTY
 
MISSOULA DOPPLER WAETHER RADAR INDICATED A SEVERE THUNDERSTORM WEST OF
GARNET. THE STORM IS MOVING TO THE NORTHEAST AT 20 MPH. IT IS EXPECTED
TO BE IN THE VICINITY OF COTTONWOOD IN POWELL COUNTY AROUND 4PM.
 
 
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.

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.