Alert archive / Montana / Tornado Warnings in 1993

Tornado Warning 7, NWS Glasgow, MT

August 16, 1993Roosevelt County, Montana

NWS Glasgow, MT issued this tornado warning at Aug 16, 1993, 9:31 PM MDT for Roosevelt County, Montana. It was in force for 29 min.

The area

The counties it named.

The facts

Issued
Aug 16, 1993, 9:31 PM MDT (03:31 UTC)
Expired
Aug 16, 1993, 10:00 PM MDT
In force
29 min
Issued by
NWS Glasgow, MT
Area
Whole counties

County Roosevelt County, MT

The nearest sounding before it

Great_falls, MT (KTFX), launched 00:00Z, 3.5 hours before the alert went out and 427 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 1993-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 19 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 1993-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -47 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
19 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1136 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-47 m²/s²
0-3 km storm-relative helicity
-43 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 Glasgow, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 16, 6:56 PM MDTSevere Thunderstorm WarningGGWGarfield64 min
Aug 16, 7:25 PM MDTSevere Thunderstorm WarningGGWMcCone65 min
Aug 16, 7:42 PM MDTSevere Thunderstorm WarningGGWValley63 min
Aug 16, 8:08 PM MDTSevere Thunderstorm WarningGGWValley67 min
Aug 16, 9:24 PM MDTSevere Thunderstorm WarningGGWValley66 min
Aug 16, 9:35 PM MDTSevere Thunderstorm WarningGGWRichland55 min

Nearby

Tornado Warnings in Montana, 1993Every tornado warning in 1993Tornadoes 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.