Alert archive / Michigan / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 21, NWS Detroit, MI

June 23, 1997Shiawassee County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jun 23, 1997, 4:43 PM EDT for Shiawassee County, Michigan. It was in force for 62 min. 1 report 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
Jun 23, 1997, 4:43 PM EDT (20:43 UTC)
Expired
Jun 23, 1997, 5:45 PM EDT
In force
62 min
Issued by
NWS Detroit, MI
Area
Whole counties

County Shiawassee County, MI

What was reported inside it

TimeReportWhereRemark
Jun 23, 4:58 PM EDTHail 1.75Laingsburg, 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, 8.7 hours before the alert went out and 64 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 1997-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 11 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 1997-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 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
11 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
1705 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

847 
WUUS01 KDTX 232045 RRA
SVRDTX
MIC155-232145-

BULLETIN - EAS ACTIVATION/IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
443 PM EDT MON JUN 23 1997

*   SEVERE THUNDERSTORM WARNING FOR
    SHIAWASSEE COUNTY - SOUTHEASTERN LOWER MICHIGAN

*   UNTIL 545 PM EDT
 
*   SOME AREAS AFFECTED
    PERRY                         BY 454 PM EDT
    OWOSSO                        BY 510 PM EDT
    HENDERSON                     BY 513 PM EDT
    CORUNNA                       BY 516 PM EDT
    DURAND                        BY 528 PM EDT

*   AT 440 PM EDT...A SEVERE THUNDERSTORM WAS INDICATED BY
    DETROIT/PONTIAC DOPPLER RADAR 9 MILES SOUTHWEST OF OWOSSO MOVING
    NORTHEAST AT 20 MPH.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.  FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS.

Nearby

Severe Thunderstorm Warnings in Michigan, 1997Every severe thunderstorm warning in 1997

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.