Alert archive / Michigan / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 690

August 16, 199718 counties in Indiana; 21 counties in Michigan; 11 counties in Ohio

The Storm Prediction Center issued this severe thunderstorm watch at Aug 16, 1997, 1:45 PM EST for 18 counties in Indiana; 21 counties in Michigan; 11 counties in Ohio. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Aug 16, 1997, 1:45 PM EST (18:45 UTC)
Expired
Aug 16, 1997, 8:00 PM EST
In force
6 hr
Issued by
the Storm Prediction Center
All 50 counties

Adams County, IN, Allen County, IN, Blackford County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Grant County, IN, Huntington County, IN, Kosciusko County, IN, LaGrange County, IN, Marshall County, IN, Miami County, IN, Noble County, IN, Saint Joseph County, IN, Steuben County, IN, Wabash County, IN, Wells County, IN, Whitley County, IN, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Eaton County, MI, Genesee County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Kalamazoo County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saint Clair County, MI, Saint Joseph County, MI, Sanilac County, MI, Washtenaw County, MI, Wayne County, MI, Defiance County, OH, Fulton County, OH, Henry County, OH, Lucas County, OH, Ottawa County, OH, Paulding County, OH, Putnam County, OH, Sandusky County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH

Warnings issued inside it

25 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Aug 16, 1:50 PM ESTSevere Thunderstorm WarningDTXMonroe40 min
Aug 16, 1:55 PM ESTSevere Thunderstorm WarningGRRCalhoun50 min
Aug 16, 2:01 PM ESTSevere Thunderstorm WarningGRRSaint Joseph49 min
Aug 16, 2:04 PM ESTSevere Thunderstorm WarningGRRSaint Joseph46 min
Aug 16, 2:18 PM ESTSevere Thunderstorm WarningGRRJackson47 min
Aug 16, 2:23 PM ESTSevere Thunderstorm WarningGRRHillsdale52 min
Aug 16, 2:34 PM ESTSevere Thunderstorm WarningDTXLenawee56 min
Aug 16, 2:55 PM ESTSevere Thunderstorm WarningGRRBerrien, Cass, Saint Joseph45 min
Aug 16, 3:14 PM ESTFlash Flood WarningGRRCass, Saint Joseph3 hr
Aug 16, 3:20 PM ESTSevere Thunderstorm WarningDTXLenawee, Monroe55 min
Aug 16, 3:38 PM ESTSevere Thunderstorm WarningCLEFulton, Lucas67 min
Aug 16, 3:44 PM ESTSevere Thunderstorm WarningLOTSaint Joseph61 min
Aug 16, 3:56 PM ESTSevere Thunderstorm WarningLOTElkhart34 min
Aug 16, 3:57 PM ESTSevere Thunderstorm WarningGRRCass48 min
Aug 16, 5:26 PM ESTSevere Thunderstorm WarningIWXLaGrange, Steuben34 min
Aug 16, 5:32 PM ESTSevere Thunderstorm WarningILNPaulding63 min
Aug 16, 5:39 PM ESTSevere Thunderstorm WarningILNPutnam61 min
Aug 16, 5:54 PM ESTSevere Thunderstorm WarningIWXLaGrange36 min
Aug 16, 6:14 PM ESTSevere Thunderstorm WarningGRRKalamazoo51 min
Aug 16, 6:34 PM ESTSevere Thunderstorm WarningGRRCass, Saint Joseph51 min
Aug 16, 7:01 PM ESTFlash Flood WarningILNPutnam3 hr
Aug 16, 7:08 PM ESTFlash Flood WarningIWXDeKalb97 min
Aug 16, 7:13 PM ESTSevere Thunderstorm WarningGRRBerrien47 min
Aug 16, 7:48 PM ESTSevere Thunderstorm WarningLOTLaPorte, Saint Joseph42 min
Aug 16, 7:59 PM ESTTornado WarningLOTSaint Joseph31 min

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 6.8 hours before the alert went out and 142 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 1997-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2226 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 1997-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 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
2226 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
607 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
135 m²/s²
Significant tornado parameter
0.9
Supercell composite
6.1

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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 16, 5:15 PM ESTSevere Thunderstorm WatchSPCBenton, Carroll, Cass, Clinton, Fulton, Jasper and 10 more6 hr
Aug 15, 8:00 PM ESTTornado WatchSPCAlger, Dickinson, Gogebic, Iron6 hr
Aug 16, 7:15 AM ESTSevere Thunderstorm WatchSPCLenawee, Monroe, Washtenaw, Wayne4 hr
Aug 16, 3:15 PM ESTSevere Thunderstorm WatchSPCAllen, Ashland, Ashtabula, Auglaize, Carroll, Champaign and 38 more6 hr

Nearby

Severe Thunderstorm Watches in Michigan, 1997Severe Thunderstorm Watches in Indiana, 1997Severe Thunderstorm Watches in Ohio, 1997Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive.