Alert archive / Michigan / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 516

June 23, 200416 counties in Michigan; 15 counties in Wisconsin

The Storm Prediction Center issued this severe thunderstorm watch at Jun 23, 2004, 7:40 PM EDT for 16 counties in Michigan; 15 counties in Wisconsin. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 23, 2004, 7:40 PM EDT (23:40 UTC)
Expired
Jun 24, 2004, 1:00 AM EDT
In force
5 hr
Issued by
the Storm Prediction Center
All 31 counties

Antrim County, MI, Benzie County, MI, Clare County, MI, Grand Traverse County, MI, Isabella County, MI, Kalkaska County, MI, Lake County, MI, Leelanau County, MI, Manistee County, MI, Mason County, MI, Mecosta County, MI, Missaukee County, MI, Newaygo County, MI, Oceana County, MI, Osceola County, MI, Wexford County, MI, Brown County, WI, Calumet County, WI, Door County, WI, Fond du Lac County, WI, Green Lake County, WI, Kewaunee County, WI, Langlade County, WI, Manitowoc County, WI, Menominee County, WI, Oconto County, WI, Outagamie County, WI, Shawano County, WI, Sheboygan County, WI, Waupaca County, WI, Winnebago County, WI

The radar

The Green Bay radar (KGRB), 59 km from the middle of the area, began a volume at 23:42 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

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

IssuedProductOfficeCountiesLasted
Jun 23, 8:49 PM EDTSevere Thunderstorm WarningGRBWaupaca56 min
Jun 23, 9:02 PM EDTTornado WarningGRBWaupaca28 min
Jun 23, 9:12 PM EDTTornado WarningMKXGreen Lake33 min
Jun 23, 9:31 PM EDTTornado WarningMKXDodge, Fond du Lac59 min
Jun 23, 9:33 PM EDTTornado WarningGRBOutagamie42 min
Jun 23, 9:48 PM EDTSevere Thunderstorm WarningGRBWinnebago42 min
Jun 23, 9:59 PM EDTTornado WarningGRBCalumet31 min
Jun 23, 10:09 PM EDTSevere Thunderstorm WarningMKXOzaukee, Sheboygan, Washington36 min
Jun 23, 10:14 PM EDTTornado WarningGRBBrown, Outagamie46 min
Jun 23, 10:29 PM EDTTornado WarningGRBManitowoc31 min
Jun 23, 10:35 PM EDTTornado WarningMKXOzaukee, Sheboygan25 min
Jun 23, 11:42 PM EDTSevere Thunderstorm WarningGRRNewaygo33 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.7 hours before the alert went out and 59 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, Green Bay/Straub, WI at 12:00Z on 2004-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Green Bay/Straub, WI at 12:00Z on 2004-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1093 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
147 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 23, 12:23 PM EDTMesoscale DiscussionSPCAllegan, Antrim, Barry, Berrien, Calhoun, Cass and 34 more2 hr
Jun 23, 6:00 PM EDTSevere Thunderstorm WatchSPCAllegan, Barry, Branch, Calhoun, Cass, Clinton and 25 more6 hr
Jun 23, 11:17 AM EDTMesoscale DiscussionSPCAshland, Barron, Bayfield, Burnett, Douglas, Dunn and 4 more118 min
Jun 23, 4:45 PM EDTMesoscale DiscussionSPCAdams, Buffalo, Columbia, Crawford, Dane, Dodge and 26 more90 min
Jun 23, 5:05 PM EDTSevere Thunderstorm WatchSPCAdams, Barron, Buffalo, Chippewa, Clark, Dunn and 17 more5 hr
Jun 23, 7:34 PM EDTMesoscale DiscussionSPCAdams, Calumet, Columbia, Dodge, Fond du Lac, Green Lake and 14 more116 min

Nearby

Severe Thunderstorm Watches in Michigan, 2004Severe Thunderstorm Watches in Wisconsin, 2004Every severe thunderstorm watch in 2004

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.