Alert archive / Michigan / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 21, NWS Indianapolis, IN

March 27, 1991Berrien County, Michigan

NWS Indianapolis, IN issued this severe thunderstorm warning at Mar 27, 1991, 6:04 PM EST for Berrien County, Michigan. It was in force for 26 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
Mar 27, 1991, 6:04 PM EST (23:04 UTC)
Expired
Mar 27, 1991, 6:30 PM EST
In force
26 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Berrien County, MI

What was reported inside it

TimeReportWhereRemark
Mar 27, 6:35 PM ESTThunderstorm Wind 70Berrien, MI
Mar 27, 6:40 PM ESTHail 1.75Berrien, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Detroit, MI (KFNT), launched 12:00Z, 11.1 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, Detroit, MI at 12:00Z on 1991-03-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 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 1991-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -48 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
16 J/kg
Mixed-layer CIN
-223 J/kg
Mixed-layer LCL
1101 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
118 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 Indianapolis, IN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 27, 3:45 AM ESTSevere Thunderstorm WarningINDBerrien30 min
Mar 27, 6:28 PM ESTSevere Thunderstorm WarningINDBerrien32 min
Mar 27, 6:45 PM ESTSevere Thunderstorm WarningINDCass30 min

Nearby

Severe Thunderstorm Warnings in Michigan, 1991Every severe thunderstorm warning in 1991

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.