Alert archive / Montana / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 23, NWS Missoula, MT

July 10, 1995Powell County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jul 10, 1995, 2:19 PM MDT for Powell County, Montana. It was in force for 26 min.

The area

The counties it named.

The facts

Issued
Jul 10, 1995, 2:19 PM MDT (20:19 UTC)
Expired
Jul 10, 1995, 2:45 PM MDT
In force
26 min
Issued by
NWS Missoula, MT
Area
Whole counties

County Powell County, MT

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 8.3 hours before the alert went out and 189 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 1995-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 40 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 1995-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.1939587897Sfc1 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
40 J/kg
Mixed-layer CIN
-414 J/kg
Mixed-layer LCL
1810 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
12 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 102018 RRA
SVRMSO
MTC077-102045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
219 PM MDT MON JUL 10 1995
 
THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  245 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...                     ...
 
IN WEST CENTRAL MONTANA
 
   ...SOUTHERN POWELL COUNTY
 
AT 215PM MDT MISSOULA DOPPLER WEATHER RADAR CONTIUES TO INDICATE A
SEVERE THUNDERSTORM JUST EAST OF THE CITY OF DEER LODGE. THIS STORM HAS
PRODUCED HAIL AND STRONG WINDS. THIS STORM IS MOVING TO THE NORTEAST AT
25 MILES AN 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 6:30 PM MDTSevere Thunderstorm WarningMSOGranite, Powell25 min
Jul 9, 7:10 PM MDTSevere Thunderstorm WarningMSOLincoln50 min
Jul 9, 11:45 PM MDTSevere Thunderstorm WarningMSOFlathead45 min
Jul 10, 1:35 PM MDTSevere Thunderstorm WarningMSOPowell40 min
Jul 10, 2:44 PM MDTSevere Thunderstorm WarningMSODeer Lodge36 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.