Alert archive / Michigan / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 90, NWS Grand Rapids, MI

August 20, 1996Branch County, Hillsdale County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 20, 1996, 4:06 PM EDT for Branch County, Hillsdale County, Michigan. It was in force for 54 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Aug 20, 1996, 4:06 PM EDT (20:06 UTC)
Expired
Aug 20, 1996, 5:00 PM EDT
In force
54 min
Issued by
NWS Grand Rapids, MI
Area
Whole counties

Counties Branch County, MI, Hillsdale County, MI

What was reported inside it

TimeReportWhereRemark
Aug 20, 4:20 PM EDTThunderstorm WindHodunk, MI
Aug 20, 4:35 PM EDTThunderstorm WindColdwater, MI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 8.1 hours before the alert went out and 146 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 12:00Z on 1996-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1181 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 12:00Z on 1996-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 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
1181 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
824 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
133 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
Aug 19, 8:12 PM EDTTornado WarningGRRClinton63 min
Aug 20, 12:32 AM EDTSevere Thunderstorm WarningGRROsceola28 min
Aug 20, 4:36 AM EDTSevere Thunderstorm WarningGRRMecosta, Montcalm, Newaygo39 min
Aug 20, 1:53 PM EDTSevere Thunderstorm WarningGRRJackson52 min
Aug 20, 2:20 PM EDTSevere Thunderstorm WarningGRRCalhoun25 min

Nearby

Severe Thunderstorm Warnings in Michigan, 1996Every severe thunderstorm warning in 1996

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.