Alert archive / Montana / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 369

June 1, 20027 counties in Montana

The Storm Prediction Center issued this severe thunderstorm watch at Jun 1, 2002, 7:00 PM MDT for 7 counties in Montana. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 1, 2002, 7:00 PM MDT (01:00 UTC)
Expired
Jun 2, 2002, 12:00 AM MDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Big Horn County, MT, Carbon County, MT, Park County, MT, Powder River County, MT, Stillwater County, MT, Sweet Grass County, MT, Yellowstone County, MT

The nearest sounding before it

Riverton, WY (KRIW), launched 00:00Z, 1.0 hours before the alert went out and 275 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, Riverton, WY at 00:00Z on 2002-06-02Temperature 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 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 00:00Z on 2002-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -41 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2798 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
-41 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

Nearby

Severe Thunderstorm Watches in Montana, 2002Every severe thunderstorm watch in 2002

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.