Alert archive / Montana / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 25, NWS Missoula, MT

June 28, 1993Broadwater County, Lewis and Clark County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 28, 1993, 1:32 PM MDT for Broadwater County, Lewis and Clark County, Montana. It was in force for 43 min.

The area

The counties it named.

The facts

Issued
Jun 28, 1993, 1:32 PM MDT (19:32 UTC)
Expired
Jun 28, 1993, 2:15 PM MDT
In force
43 min
Issued by
NWS Missoula, MT
Area
Whole counties

Counties Broadwater County, MT, Lewis and Clark County, MT

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 7.5 hours before the alert went out and 130 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 12:00Z on 1993-06-28Temperature 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 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 12:00Z on 1993-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.193958Sfc1 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
1037 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
150 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 12:48 PM MDTSevere Thunderstorm WarningMSOLewis and Clark42 min
Jun 28, 1:04 PM MDTSevere Thunderstorm WarningMSOLewis and Clark26 min
Jun 28, 1:48 PM MDTSevere Thunderstorm WarningMSOBroadwater, Jefferson42 min

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.