Alert archive / Michigan / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 505

July 4, 20018 counties in Indiana; 15 counties in Michigan; 11 counties in Ohio

The Storm Prediction Center issued this severe thunderstorm watch at Jul 4, 2001, 1:00 PM EST for 8 counties in Indiana; 15 counties in Michigan; 11 counties in Ohio. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jul 4, 2001, 1:00 PM EST (18:00 UTC)
Expired
Jul 4, 2001, 6:00 PM EST
In force
5 hr
Issued by
the Storm Prediction Center
All 34 counties

Allen County, IN, DeKalb County, IN, Fulton County, IN, Kosciusko County, IN, LaGrange County, IN, Noble County, IN, Steuben County, IN, Whitley County, IN, Branch County, MI, Genesee County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saint Clair County, MI, Sanilac County, MI, Washtenaw County, MI, Wayne County, MI, Defiance County, OH, Fulton County, OH, Hancock County, OH, Henry County, OH, Lucas County, OH, Ottawa County, OH, Paulding County, OH, Putnam County, OH, Sandusky County, OH, Williams County, OH, Wood County, OH

The radar

The Detroit radar (KDTX), 79 km from the middle of the area, began a volume at 18:01 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 4, 1:03 PM ESTSevere Thunderstorm WarningDTXLapeer42 min
Jul 4, 1:16 PM ESTSevere Thunderstorm WarningDTXSaint Clair44 min
Jul 4, 1:58 PM ESTSevere Thunderstorm WarningDTXOakland47 min
Jul 4, 2:06 PM ESTSevere Thunderstorm WarningDTXMacomb, Wayne39 min
Jul 4, 2:42 PM ESTSevere Thunderstorm WarningDTXWayne18 min
Jul 4, 3:14 PM ESTTornado WarningIWXCass, Fulton46 min
Jul 4, 5:31 PM ESTSevere Thunderstorm WarningCLEWood14 min
Jul 4, 5:32 PM ESTSevere Thunderstorm WarningCLEHancock43 min

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 6.0 hours before the alert went out and 83 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 2001-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1569 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 2001-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 square meters per square second.1939587897117Sfc1 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
1569 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
486 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.7
Supercell composite
4.8

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.

Nearby

Severe Thunderstorm Watches in Michigan, 2001Severe Thunderstorm Watches in Ohio, 2001Severe Thunderstorm Watches in Indiana, 2001Every severe thunderstorm watch in 2001

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; radar from the NEXRAD Level II archive.