Alert archive / Michigan / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 20, NWS Grand Rapids, MI

April 26, 1994Clinton County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Apr 26, 1994, 10:54 PM EDT for Clinton County, Michigan. It was in force for 36 min.

The area

The counties it named.

The facts

Issued
Apr 26, 1994, 10:54 PM EDT (02:54 UTC)
Expired
Apr 26, 1994, 11:30 PM EDT
In force
36 min
Issued by
NWS Grand Rapids, MI
Area
Whole counties

County Clinton County, MI

The nearest sounding before it

Detroit, MI (KFNT), launched 00:00Z, 2.9 hours before the alert went out and 99 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, Detroit, MI at 00:00Z on 1994-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 513 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, Detroit, MI at 00:00Z on 1994-04-27The 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
513 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
2058 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
187 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 Grand Rapids, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 26, 9:00 PM EDTSevere Thunderstorm WarningGRRAllegan45 min
Apr 26, 9:38 PM EDTSevere Thunderstorm WarningGRRMontcalm37 min
Apr 26, 9:45 PM EDTSevere Thunderstorm WarningGRRAllegan, Kent45 min
Apr 26, 9:59 PM EDTSevere Thunderstorm WarningGRRIsabella31 min
Apr 26, 10:12 PM EDTSevere Thunderstorm WarningGRRMontcalm33 min
Apr 26, 10:18 PM EDTSevere Thunderstorm WarningGRRIsabella27 min
Apr 26, 10:56 PM EDTSevere Thunderstorm WarningGRRKalamazoo34 min
Apr 26, 11:18 PM EDTSevere Thunderstorm WarningGRRVan Buren32 min
Apr 26, 11:18 PM EDTSevere Thunderstorm WarningGRRCalhoun, Eaton27 min
Apr 27, 12:06 AM EDTSevere Thunderstorm WarningGRRKalamazoo54 min
Apr 27, 12:19 AM EDTSevere Thunderstorm WarningGRRIngham26 min

Nearby

Severe Thunderstorm Warnings in Michigan, 1994Every severe thunderstorm warning in 1994

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.