Alert archive / Montana / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 8, NWS Great Falls, MT

June 15, 1993Petroleum County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at Jun 15, 1993, 6:36 PM MDT for Petroleum County, Montana. It was in force for 54 min.

The area

The counties it named.

The facts

Issued
Jun 15, 1993, 6:36 PM MDT (00:36 UTC)
Expired
Jun 15, 1993, 7:30 PM MDT
In force
54 min
Issued by
NWS Great Falls, MT
Area
Whole counties

County Petroleum County, MT

The nearest sounding before it

Great Falls, MT (KGTF), launched 00:00Z, 0.6 hours before the alert went out and 233 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 1993-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 94 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 1993-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 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
94 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
1065 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
165 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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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, 1993Every severe thunderstorm warning in 1993

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.