Alert archive / Montana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 5, NWS Missoula, MT

June 22, 2000Silver Bow County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 22, 2000, 1:40 PM MDT for Silver Bow County, Montana. It was in force for 50 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 22, 2000, 1:40 PM MDT (19:40 UTC)
Expired
Jun 22, 2000, 2:30 PM MDT
In force
50 min
Issued by
NWS Missoula, MT
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Silver Bow County, MT

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 7.7 hours before the alert went out and 246 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 2000-06-22Temperature 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 2000-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -61 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1365 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
-61 m²/s²
0-3 km storm-relative helicity
156 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.

677 
WUUS55 KMSO 221941
SVRMSO
MTC093-222030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
140 PM MDT THU JUN 22 2000

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN SILVER BOW COUNTY IN SOUTHWEST MONTANA

* UNTIL 230 PM MDT

* AT 140 PM MDT...RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES WEST
  OF DIVIDE...OR 28 MILES SOUTHWEST OF BUTTE...MOVING EAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  OVER DIVIDE AT 145 PM MDT

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

IF YOU ARE CAUGHT OUTSIDE...MOVE TO A STURDY SHELTER OR WELL
PROTECTED AREA.


LAT...LON 4581 11294 4564 11270 4565 11261 4575 11218
          4588 11251

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.