Alert archive / Montana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 61, NWS Billings, MT

July 6, 2000Treasure County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Jul 6, 2000, 8:05 PM MDT for Treasure County, Montana. It was in force for 25 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
Jul 6, 2000, 8:05 PM MDT (02:05 UTC)
Expired
Jul 6, 2000, 8:30 PM MDT
In force
25 min
Issued by
NWS Billings, MT
Area
Whole counties

County Treasure County, MT

The radar

The Billings radar (KBLX), 110 km from the middle of the area, began a volume at 02:04 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 nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 2.1 hours before the alert went out and 229 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 2000-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2166 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, Glasgow Intl Airport, MT at 00:00Z on 2000-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 square meters per square second.1939587897117136Sfc1 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
2166 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1124 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
-85 m²/s²
Significant tornado parameter
-0.7
Supercell composite
-3.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.