Alert archive / Michigan / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 668

July 24, 200540 counties in Michigan

The Storm Prediction Center issued this severe thunderstorm watch at Jul 24, 2005, 3:40 AM EDT for 40 counties in Michigan. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jul 24, 2005, 3:40 AM EDT (07:40 UTC)
Expired
Jul 24, 2005, 10:12 AM EDT
In force
7 hr
Issued by
the Storm Prediction Center
All 40 counties

Alcona County, MI, Alpena County, MI, Antrim County, MI, Arenac County, MI, Bay County, MI, Benzie County, MI, Charlevoix County, MI, Cheboygan County, MI, Chippewa County, MI, Clare County, MI, Crawford County, MI, Delta County, MI, Emmet County, MI, Gladwin County, MI, Grand Traverse County, MI, Gratiot County, MI, Iosco County, MI, Isabella County, MI, Kalkaska County, MI, Lake County, MI, Leelanau County, MI, Mackinac County, MI, Manistee County, MI, Mason County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Montcalm County, MI, Montmorency County, MI, Newaygo County, MI, Ogemaw County, MI, Osceola County, MI, Oscoda County, MI, Otsego County, MI, Presque Isle County, MI, Roscommon County, MI, Saginaw County, MI, Schoolcraft County, MI, Tuscola County, MI, Wexford County, MI

The radar

The NCL Michigan radar (KAPX), 55 km from the middle of the area, began a volume at 07:41 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

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

IssuedProductOfficeCountiesLasted
Jul 24, 3:57 AM EDTSevere Thunderstorm WarningGRRMason63 min
Jul 24, 4:02 AM EDTSevere Thunderstorm WarningAPXManistee58 min
Jul 24, 4:40 AM EDTFlash Flood WarningAPXManistee2 hr
Jul 24, 4:44 AM EDTSevere Thunderstorm WarningGRRLake46 min
Jul 24, 4:50 AM EDTFlash Flood WarningGRRMason3 hr
Jul 24, 5:01 AM EDTSevere Thunderstorm WarningGRRMason30 min
Jul 24, 5:09 AM EDTFlash Flood WarningGRRLake, Osceola3 hr
Jul 24, 5:28 AM EDTSevere Thunderstorm WarningGRRLake47 min
Jul 24, 5:56 AM EDTSevere Thunderstorm WarningGRRMecosta, Newaygo64 min
Jul 24, 6:32 AM EDTSevere Thunderstorm WarningGRRGratiot, Isabella, Montcalm58 min
Jul 24, 6:38 AM EDTSevere Thunderstorm WarningAPXCrawford, Kalkaska47 min
Jul 24, 6:43 AM EDTFlash Flood WarningAPXManistee3 hr
Jul 24, 7:07 AM EDTSevere Thunderstorm WarningAPXRoscommon38 min
Jul 24, 8:17 AM EDTFlash Flood WarningGRRLake, Osceola3 hr
Jul 24, 8:26 AM EDTSevere Thunderstorm WarningAPXGladwin41 min
Jul 24, 8:30 AM EDTSevere Thunderstorm WarningDTXBay, Midland60 min
Jul 24, 8:49 AM EDTSevere Thunderstorm WarningDTXHuron, Saginaw, Tuscola71 min
Jul 24, 8:55 AM EDTSevere Thunderstorm WarningGRRIsabella, Mecosta, Montcalm51 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 00:00Z, 7.7 hours before the alert went out and 224 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 00:00Z on 2005-07-24Temperature 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 00:00Z on 2005-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 225 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1000 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
225 m²/s²
0-3 km storm-relative helicity
293 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
Jul 24, 12:02 AM EDTMesoscale DiscussionSPCAntrim, Baraga, Benzie, Charlevoix, Cheboygan, Clare and 23 more118 min
Jul 24, 12:35 AM EDTSevere Thunderstorm WatchSPCBaraga, Delta, Dickinson, Gogebic, Iron, Marquette and 2 more6 hr
Jul 24, 2:57 AM EDTMesoscale DiscussionSPCAntrim, Benzie, Clare, Delta, Dickinson, Gladwin and 25 more2 hr
Jul 24, 5:59 AM EDTMesoscale DiscussionSPCAntrim, Arenac, Barry, Bay, Benzie, Branch and 45 more91 min
Jul 24, 8:30 AM EDTSevere Thunderstorm WatchSPCBarry, Branch, Calhoun, Clinton, Eaton, Genesee and 14 more4 hr
Jul 24, 10:22 AM EDTMesoscale DiscussionSPCArenac, Bay, Genesee, Gladwin, Gratiot, Huron and 15 more53 min
Jul 24, 4:46 PM EDTMesoscale DiscussionSPCArenac, Barry, Bay, Branch, Calhoun, Clinton and 25 more119 min

Nearby

Severe Thunderstorm Watches in Michigan, 2005Every severe thunderstorm watch in 2005

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.