Alert archive / Montana / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 22, NWS Missoula, MT

July 10, 1995Powell County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jul 10, 1995, 1:35 PM MDT for Powell County, Montana. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Jul 10, 1995, 1:35 PM MDT (19:35 UTC)
Expired
Jul 10, 1995, 2:15 PM MDT
In force
40 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, 7.6 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 101935 RRA
SVRMSO
MTC077-102015-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
135 PM MDT MON JUL 10 1995
 
THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  215 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...                     ...
 
IN WEST CENTRAL MONTANA
 
   ...SOUTHERN POWELL COUNTY
 
AT 1:35 MISSOULA DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM ENTERING
SOUTHERN POWELL COUNTY. THIS STORM IS 15 MILES SOUTHWEST OF DEER LODGE
MOVING NORTHEAST AT 25 MILES AN HOUR.
 
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...ABND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
 
WHITMORE/NWSO MSO

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

Local storm report, Jul 10, 7:55 AM MDT, 5 hours 40 minutes before
MTZ001-101500-

LOCAL STORM REPORT...UPDATED
NATIONAL WEATHER SERVICE KALISPELL MT
755 AM MDT MON JUL 10 1995

TIME(MDT)  .....CITY LOCATION.....STATE  ...EVENT/REMARKS...
           .....COUNTY LOCATION....

655 PM     LINCOLN                MT     DOWNED POWER LINES AND
           LIBBY (NE)                    LARGE TREES AND ROOFS BLOWN
                                         OFF OF HOMES.

840 PM     FLATHEAD               MT     OUTDOOR SOUND STAGE AND
           BIG MTN SKI RESORT            LARGE TENT BLEW OVER
           NORTH OF WHITEFISH

UNKN       FLATHEAD               MT    MANY TREES DOWN IN NORTH FORK
           POLEBRIDGE AREA              AREA OF GLACIER NATIONAL PARK.

UNKN       LINCOLN                MT    SEVERAL LARGE TREES DOWN,
FORTINE                      STILL CHECKING DAMAGE

UNKN       LINCOLN                MT    NUMEROUS POWER OUTAGES WITH
           EUREKA                       CREWS WORKING THROUGH THE
                                        NIGHT.  MANY LARGE TREE LIMBS
                                        AND SOME LARGE TREES DOWN.
                                        NO REPORT OF PERSONAL DAMAGE.

END/CCC

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, 2:19 PM MDTSevere Thunderstorm WarningMSOPowell26 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.