Alert archive / Montana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 2, NWS Missoula, MT

June 7, 2000Powell County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 7, 2000, 11:53 PM MDT for Powell County, Montana. It was in force for 37 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 7, 2000, 11:53 PM MDT (05:53 UTC)
Expired
Jun 8, 2000, 12:30 AM MDT
In force
37 min
Issued by
NWS Missoula, MT
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Powell County, MT

The nearest sounding before it

Great_falls, MT (KTFX), launched 00:00Z, 5.9 hours before the alert went out and 180 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 2000-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 945 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 00:00Z on 2000-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 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
945 J/kg
Mixed-layer CIN
-104 J/kg
Mixed-layer LCL
2275 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
278 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.9

Open this sounding in Storm Lab

The text

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

709 
WUUS55 KMSO 080554
SVRMSO
MTC077-080630-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
1153 PM MDT WED JUN 7 2000

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL POWELL COUNTY IN WEST CENTRAL MONTANA

* UNTIL 1230 AM MDT

* AT 1153 PM MDT...RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES   
SOUTH OF OVANDO...MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN OVER REMOTE AREAS.

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.

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


LAT...LON 4697 11336 4681 11322 4715 11222 4738 11241

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 3:41 PM MDTSevere Thunderstorm WarningMSOFlathead49 min
Jun 8, 4:17 PM MDTSevere Thunderstorm WarningMSOFlathead43 min

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.