Alert archive / Indiana / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 247

May 7, 200218 counties in Illinois; 37 counties in Indiana; 32 counties in Kentucky

The Storm Prediction Center issued this severe thunderstorm watch at May 7, 2002, 3:45 AM CDT for 18 counties in Illinois; 37 counties in Indiana; 32 counties in Kentucky. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 7, 2002, 3:45 AM CDT (08:45 UTC)
Expired
May 7, 2002, 9:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 87 counties

Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Edwards County, IL, Effingham County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jasper County, IL, Lawrence County, IL, Richland County, IL, Saline County, IL, Shelby County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Bartholomew County, IN, Brown County, IN, Clark County, IN, Clay County, IN, Crawford County, IN, Daviess County, IN, Dearborn County, IN, Decatur County, IN, Dubois County, IN, Floyd County, IN, Franklin County, IN, Gibson County, IN, Greene County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Ohio County, IN, Orange County, IN, Owen County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Ripley County, IN, Scott County, IN, Spencer County, IN, Sullivan County, IN, Switzerland County, IN, Vanderburgh County, IN, Vigo County, IN, Warrick County, IN, Washington County, IN, Anderson County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Carroll County, KY, Casey County, KY, Daviess County, KY, Franklin County, KY, Gallatin County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Henderson County, KY, Henry County, KY, Jefferson County, KY, Larue County, KY, Marion County, KY, McLean County, KY, Meade County, KY, Mercer County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Union County, KY, Washington County, KY, Webster County, KY, Woodford County, KY

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 7, 4:02 AM CDTFlash Flood WarningILXCrawford, Effingham, Jasper7 hr
May 7, 4:05 AM CDTSevere Thunderstorm WarningINDVigo25 min
May 7, 5:00 AM CDTFlash Flood WarningINDMorgan24 hr
May 7, 5:00 AM CDTFlash Flood WarningINDMorgan2 hr
May 7, 5:01 AM CDTFlash Flood WarningINDMorgan29 min
May 7, 5:02 AM CDTFlash Flood WarningINDMorgan3 hr
May 7, 5:14 AM CDTFlash Flood WarningINDClay, Owen2 hr
May 7, 5:14 AM CDTFlash Flood WarningINDClay, Owen61 min
May 7, 5:21 AM CDTFlash Flood WarningINDVigo114 min
May 7, 5:21 AM CDTFlash Flood WarningINDVigo54 min
May 7, 5:29 AM CDTFlash Flood WarningINDMorgan3 hr
May 7, 5:36 AM CDTFlash Flood WarningINDBartholomew, Brown, Decatur, Monroe114 min
May 7, 5:38 AM CDTFlash Flood WarningINDBartholomew, Brown, Decatur, Monroe3 hr
May 7, 6:27 AM CDTFlash Flood WarningILNDearborn, Franklin, Ripley2 hr
May 7, 6:29 AM CDTFlash Flood WarningILNDearborn, Franklin, Ripley3 hr
May 7, 7:16 AM CDTFlash Flood WarningINDClay, Owen, Vigo59 min
May 7, 7:17 AM CDTFlash Flood WarningINDClay, Owen, Vigo118 min
May 7, 7:40 AM CDTFlash Flood WarningINDJohnson, Marion, Morgan, Rush, Shelby65 min
May 7, 7:41 AM CDTFlash Flood WarningINDJohnson, Marion, Morgan, Rush, Shelby2 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 8.8 hours before the alert went out and 202 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 00:00Z on 2002-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 854 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 00:00Z on 2002-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 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
854 J/kg
Mixed-layer CIN
-111 J/kg
Mixed-layer LCL
913 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 7, 12:45 AM CDTSevere Thunderstorm WatchSPCBond, Calhoun, Christian, Clinton, Fayette, Greene and 9 more5 hr
May 7, 3:00 AM CDTSevere Thunderstorm WatchSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 13 more5 hr

Nearby

Severe Thunderstorm Watches in Indiana, 2002Severe Thunderstorm Watches in Kentucky, 2002Severe Thunderstorm Watches in Illinois, 2002Every severe thunderstorm watch in 2002

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.