Alert archive / Montana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 21, NWS Glasgow, MT

June 8, 2000Petroleum County, Montana

NWS Glasgow, MT issued this severe thunderstorm warning at Jun 8, 2000, 9:46 PM MDT for Petroleum County, Montana. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 8, 2000, 9:46 PM MDT (03:46 UTC)
Expired
Jun 8, 2000, 10:45 PM MDT
In force
59 min
Issued by
NWS Glasgow, MT
Area
Whole counties

County Petroleum County, MT

The radar

The Billings radar (KBLX), 143 km from the middle of the area, began a volume at 03:46 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 8, 6:45 PM MDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 3.8 hours before the alert went out and 174 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, Glasgow Intl Airport, MT at 00:00Z on 2000-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 833 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, Glasgow Intl Airport, MT at 00:00Z on 2000-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 353 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
833 J/kg
Mixed-layer CIN
-392 J/kg
Mixed-layer LCL
1283 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
353 m²/s²
0-3 km storm-relative helicity
344 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS55 KGGW 090347
SVRGGW
MTC069-090445-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
946 PM MDT THU JUN 8 2000

THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PETROLEUM COUNTY IN NORTHEAST MONTANA

* UNTIL 1045 PM MDT

* AT 938 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER CENTRAL PETROLEUM COUNTY...OR ABOUT 13
  MILES NORTH OF WINNETT...MOVING NORTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN OVER...
  RURAL PETROLEUM COUNTY

VERY LARGE HAIL IS POSSIBLE WITH THIS STORM. IF YOU ARE IN THE PATH
OF THE STORM...SEEK SHELTER INDOORS.

PROTON

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 6:12 PM MDTSevere Thunderstorm WarningGGWPrairie63 min
Jun 8, 6:21 PM MDTSevere Thunderstorm WarningGGWGarfield54 min
Jun 8, 6:40 PM MDTSevere Thunderstorm WarningGGWMcCone65 min
Jun 8, 7:11 PM MDTSevere Thunderstorm WarningGGWPetroleum64 min
Jun 8, 7:22 PM MDTSevere Thunderstorm WarningGGWDawson, Prairie68 min
Jun 8, 7:38 PM MDTSevere Thunderstorm WarningGGWGarfield67 min
Jun 8, 8:19 PM MDTTornado WarningGGWGarfield56 min
Jun 8, 8:26 PM MDTSevere Thunderstorm WarningGGWPhillips64 min
Jun 8, 8:59 PM MDTSevere Thunderstorm WarningGGWValley61 min
Jun 8, 9:14 PM MDTSevere Thunderstorm WarningGGWGarfield61 min
Jun 8, 9:39 PM MDTSevere Thunderstorm WarningGGWMcCone66 min
Jun 8, 10:03 PM MDTSevere Thunderstorm WarningGGWValley57 min
Jun 8, 10:19 PM MDTSevere Thunderstorm WarningGGWGarfield56 min
Jun 8, 11:00 PM MDTSevere Thunderstorm WarningGGWPhillips60 min
Jun 8, 11:07 PM MDTSevere Thunderstorm WarningGGWValley53 min
Jun 9, 1:19 AM MDTSevere Thunderstorm WarningGGWValley56 min
Jun 9, 12:56 PM MDTSevere Thunderstorm WarningGGWRoosevelt64 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; radar from the NEXRAD Level II archive.