Alert archive / Montana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 6, NWS Missoula, MT

June 30, 2000Deer Lodge County, Granite County, Powell County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 30, 2000, 9:46 PM MDT for Deer Lodge County, Granite County, Powell County, Montana. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jun 30, 2000, 9:46 PM MDT (03:46 UTC)
Expired
Jun 30, 2000, 10:30 PM MDT
In force
44 min
Issued by
NWS Missoula, MT
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Deer Lodge County, MT, Granite County, MT, Powell County, MT

The nearest sounding before it

Great_falls, MT (KTFX), launched 00:00Z, 3.8 hours before the alert went out and 236 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 00:00Z on 2000-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 585 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2000-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 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
585 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
3260 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

Open this sounding in Storm Lab

The text

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

514 
WUUS55 KMSO 010347
SVRMSO
MTC023-039-077-010430-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
946 PM MDT FRI JUN 30 2000

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN DEER LODGE COUNTY IN WEST CENTRAL MONTANA
  SOUTHEASTERN GRANITE COUNTY IN WEST CENTRAL MONTANA
  SOUTHERN POWELL COUNTY IN WEST CENTRAL MONTANA

* UNTIL 1030 PM MDT

* AT 946 PM MDT...RADAR INDICATED A SEVERE THUNDERSTORM 14 MILES
  SOUTHWEST OF WEST VALLEY...OR 17 MILES SOUTHWEST OF ANACONDA...
  MOVING NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  3 MILES NORTHWEST OF WEST VALLEY...7 MILES NORTHWEST OF ANACONDA AT
  1010 PM MDT
  8 MILES WEST OF GALEN AT 1030 PM MDT

LARGE HAIL IS LIKELY WITH THIS SEVERE THUNDERSTORM. DAMAGING STRONG
WINDS IN EXCESS OF 55 MPH ARE POSSIBLE ALONG WITH DEADLY LIGHTNING
AND HEAVY RAINFALL. FOR YOUR PROTECTION...STAY INDOORS AWAY FROM
WINDOWS.


LAT...LON 4604 11340 4592 11320 4638 11257 4655 11287

Nearby

Severe Thunderstorm Warnings in Montana, 2000Every severe thunderstorm warning in 2000

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.