Alert archive / Michigan / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 2, NWS Grand Rapids, MI

April 20, 1993Barry County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Apr 20, 1993, 9:29 AM EDT for Barry County, Michigan. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Apr 20, 1993, 9:29 AM EDT (13:29 UTC)
Expired
Apr 20, 1993, 10:25 AM EDT
In force
56 min
Issued by
NWS Grand Rapids, MI
Area
Whole counties

County Barry County, MI

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 12:00Z, 1.5 hours before the alert went out and 314 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, Dayton/James M C, OH at 12:00Z on 1993-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 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, Dayton/James M C, OH at 12:00Z on 1993-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 square meters per square second.1939Sfc1 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
4 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1258 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
9 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 Grand Rapids, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 20, 9:29 AM EDTSevere Thunderstorm WarningGRRKalamazoo41 min
Apr 20, 9:43 AM EDTSevere Thunderstorm WarningGRREaton52 min

Nearby

Severe Thunderstorm Warnings in Michigan, 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.