Alert archive / Indiana / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 665

July 7, 20034 states

The Storm Prediction Center issued this severe thunderstorm watch at Jul 7, 2003, 8:45 AM CDT for 4 states. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Jul 7, 2003, 8:45 AM CDT (13:45 UTC)
Expired
Jul 7, 2003, 1:00 PM CDT
In force
4 hr
Issued by
the Storm Prediction Center
All 70 counties

Champaign County, IL, Cook County, IL, DeWitt County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kankakee County, IL, Livingston County, IL, Logan County, IL, McLean County, IL, Vermilion County, IL, Will County, IL, Adams County, IN, Allen County, IN, Benton County, IN, Blackford County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Grant County, IN, Howard County, IN, Huntington County, IN, Jasper County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Madison County, IN, Marshall County, IN, Miami County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Tippecanoe County, IN, Tipton County, IN, Wabash County, IN, Warren County, IN, Wells County, IN, White County, IN, Whitley County, IN, Allegan County, MI, Barry County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Eaton County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Kalamazoo County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Oakland County, MI, Saint Joseph County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI, Defiance County, OH, Fulton County, OH, Paulding County, OH, Williams County, OH

The radar

The Northern Indiana radar (KIWX), 107 km from the middle of the area, began a volume at 13:45 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

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

IssuedProductOfficeCountiesLasted
Jul 7, 9:00 AM CDTSevere Thunderstorm WarningLOTKankakee, Will45 min
Jul 7, 9:05 AM CDTSevere Thunderstorm WarningLOTLaSalle, Livingston25 min
Jul 7, 9:13 AM CDTSevere Thunderstorm WarningLOTPorter47 min
Jul 7, 9:23 AM CDTSevere Thunderstorm WarningIWXLaPorte52 min
Jul 7, 9:27 AM CDTSevere Thunderstorm WarningLOTLivingston48 min
Jul 7, 9:33 AM CDTSevere Thunderstorm WarningLOTJasper, Newton42 min
Jul 7, 9:45 AM CDTSevere Thunderstorm WarningGRRVan Buren45 min
Jul 7, 9:58 AM CDTSevere Thunderstorm WarningIWXSaint Joseph62 min
Jul 7, 10:05 AM CDTSevere Thunderstorm WarningGRRAllegan55 min
Jul 7, 10:08 AM CDTSevere Thunderstorm WarningIWXMarshall, Starke52 min
Jul 7, 10:17 AM CDTSevere Thunderstorm WarningIWXFulton, Pulaski58 min
Jul 7, 10:25 AM CDTSevere Thunderstorm WarningIWXElkhart50 min
Jul 7, 10:28 AM CDTSevere Thunderstorm WarningIWXKosciusko47 min
Jul 7, 10:34 AM CDTSevere Thunderstorm WarningGRRKalamazoo56 min
Jul 7, 10:50 AM CDTSevere Thunderstorm WarningIWXCass, Miami55 min
Jul 7, 10:51 AM CDTSevere Thunderstorm WarningIWXLaGrange, Noble39 min
Jul 7, 11:00 AM CDTSevere Thunderstorm WarningIWXWhitley45 min
Jul 7, 11:10 AM CDTSevere Thunderstorm WarningIWXDeKalb, Steuben80 min
Jul 7, 11:22 AM CDTSevere Thunderstorm WarningIWXAllen53 min
Jul 7, 11:33 AM CDTSevere Thunderstorm WarningIWXDefiance, Williams72 min
Jul 7, 11:52 AM CDTSevere Thunderstorm WarningIWXPaulding53 min
Jul 7, 12:10 PM CDTSevere Thunderstorm WarningDTXLenawee65 min
Jul 7, 12:10 PM CDTSevere Thunderstorm WarningIWXFulton50 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

Lincoln, IL (KILX), launched 12:00Z, 1.8 hours before the alert went out and 179 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, Lincoln, IL at 12:00Z on 2003-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1626 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, Lincoln, IL at 12:00Z on 2003-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 square meters per square second.1939Sfc1 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
1626 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1135 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
113 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 6, 8:46 PM CDTMesoscale DiscussionSPCBoone, Cook, DeKalb, DuPage, Ford, Grundy and 10 more59 min
Jul 7, 1:25 AM CDTMesoscale DiscussionSPCJo Daviess, Stephenson, Winnebago95 min
Jul 7, 2:40 AM CDTSevere Thunderstorm WatchSPCJo Daviess4 hr
Jul 7, 4:22 AM CDTMesoscale DiscussionSPCJo Daviess, Stephenson83 min
Jul 7, 6:23 AM CDTMesoscale DiscussionSPCBureau, Carroll, DeKalb, Grundy, Henry, Kendall and 9 more97 min
Jul 7, 8:30 AM CDTMesoscale DiscussionSPCChampaign, DeWitt, Douglas, Ford, Grundy, Iroquois and 13 more60 min
Jul 7, 10:14 AM CDTMesoscale DiscussionSPCChampaign, DeWitt, Ford, Iroquois, McLean, Piatt and 1 more61 min
Jul 7, 12:14 PM CDTMesoscale DiscussionSPCBond, Brown, Cass, Champaign, Christian, Clark and 42 more61 min
Jul 7, 2:35 PM CDTMesoscale DiscussionSPCBoone, Jo Daviess, McHenry, Stephenson, Winnebago115 min
Jul 7, 3:35 PM CDTSevere Thunderstorm WatchSPCRock Island5 hr
Jul 7, 4:34 PM CDTMesoscale DiscussionSPCIroquois, Kankakee, Vermilion, Will56 min
Jul 6, 11:10 PM CDTSevere Thunderstorm WatchSPCBartholomew, Boone, Brown, Clinton, Dearborn, Decatur and 21 more3 hr
Jul 6, 11:51 PM CDTMesoscale DiscussionSPCBartholomew, Boone, Brown, Clinton, Dearborn, Decatur and 21 more114 min
Jul 7, 11:30 AM CDTSevere Thunderstorm WatchSPCFayette, Henry, Jay, Randolph, Rush, Union and 1 more6 hr
Jul 7, 5:30 PM CDTTornado WatchSPCAdams, Allen, Blackford, Carroll, Cass, Clinton and 28 more6 hr
Jul 7, 12:54 PM CDTMesoscale DiscussionSPCDickinson, Iron66 min
Jul 7, 4:42 PM CDTMesoscale DiscussionSPCChippewa, Luce, Mackinac, Schoolcraft3 hr
Jul 7, 1:56 PM CDTMesoscale DiscussionSPCAshland, Belmont, Carroll, Champaign, Clark, Columbiana and 42 more94 min
Jul 7, 2:10 PM CDTSevere Thunderstorm WatchSPCAthens, Belmont, Carroll, Columbiana, Guernsey, Harrison and 12 more6 hr
Jul 7, 5:52 PM CDTMesoscale DiscussionSPCAthens, Belmont, Carroll, Columbiana, Gallia, Geauga and 15 more53 min

Nearby

Severe Thunderstorm Watches in Indiana, 2003Severe Thunderstorm Watches in Michigan, 2003Severe Thunderstorm Watches in Illinois, 2003Every severe thunderstorm watch in 2003

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.