Alert archive / Michigan / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 73, NWS Grand Rapids, MI

August 19, 1994Montcalm County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 19, 1994, 9:32 PM EDT for Montcalm County, Michigan. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Aug 19, 1994, 9:32 PM EDT (01:32 UTC)
Expired
Aug 19, 1994, 10:30 PM EDT
In force
58 min
Issued by
NWS Grand Rapids, MI
Area
Whole counties

County Montcalm County, MI

The nearest sounding before it

Detroit, MI (KFNT), launched 00:00Z, 1.5 hours before the alert went out and 155 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 1994-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1388 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 1994-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 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
1388 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
1124 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

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
Aug 19, 8:37 PM EDTSevere Thunderstorm WarningGRROttawa68 min
Aug 19, 9:02 PM EDTSevere Thunderstorm WarningGRRKent58 min
Aug 19, 10:30 PM EDTSevere Thunderstorm WarningGRRMontcalm30 min
Aug 20, 11:30 AM EDTSevere Thunderstorm WarningGRRIonia45 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.