Alert archive / Montana / Tornado Warnings in 1993

Tornado Warning 1, NWS Billings, MT

July 2, 1993Powder River County, Montana

NWS Billings, MT issued this tornado warning at Jul 2, 1993, 8:10 PM MDT for Powder River County, Montana. It was in force for 50 min.

The area

The counties it named.

The facts

Issued
Jul 2, 1993, 8:10 PM MDT (02:10 UTC)
Expired
Jul 2, 1993, 9:00 PM MDT
In force
50 min
Issued by
NWS Billings, MT
Area
Whole counties

County Powder River County, MT

The nearest sounding before it

Rapid City, SD (KRAP), launched 00:00Z, 2.2 hours before the alert went out and 262 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, Rapid City, SD at 00:00Z on 1993-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 659 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, Rapid City, SD at 00:00Z on 1993-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 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
659 J/kg
Mixed-layer CIN
-159 J/kg
Mixed-layer LCL
1616 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
215 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.4

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 Billings, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 2, 10:24 PM MDTTornado WarningBYZRosebud51 min
Jul 3, 1:24 AM MDTSevere Thunderstorm WarningBYZCuster66 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.