Alert archive / Kentucky / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 221

April 30, 19974 states

The Storm Prediction Center issued this severe thunderstorm watch at Apr 30, 1997, 6:30 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 30, 1997, 6:30 PM CDT (23:30 UTC)
Expired
May 1, 1997, 12:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 61 counties

Gallatin County, IL, Hardin County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Saline County, IL, Williamson County, IL, Crawford County, IN, Floyd County, IN, Harrison County, IN, Perry County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Adair County, KY, Allen County, KY, Barren County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Christian County, KY, Crittenden County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Graves County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Hopkins County, KY, Jefferson County, KY, Larue County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Metcalfe County, KY, Monroe County, KY, Muhlenberg County, KY, Ohio County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Warren County, KY, Webster County, KY, Henry County, TN, Houston County, TN, Montgomery County, TN, Robertson County, TN, Stewart County, TN, Weakley County, TN

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 30, 6:51 PM CDTSevere Thunderstorm WarningPAHLivingston, Marshall39 min
Apr 30, 7:02 PM CDTSevere Thunderstorm WarningPAHGallatin43 min
Apr 30, 7:28 PM CDTSevere Thunderstorm WarningPAHVanderburgh47 min
Apr 30, 7:33 PM CDTFlash Flood WarningPAHGraves, Lyon, McCracken, Marshall57 min
Apr 30, 7:38 PM CDTSevere Thunderstorm WarningPAHLyon, Marshall37 min
Apr 30, 7:40 PM CDTSevere Thunderstorm WarningPAHWarrick50 min
Apr 30, 7:47 PM CDTSevere Thunderstorm WarningPAHGraves43 min
Apr 30, 8:05 PM CDTSevere Thunderstorm WarningPAHSpencer40 min
Apr 30, 8:07 PM CDTSevere Thunderstorm WarningMEGWeakley33 min
Apr 30, 8:17 PM CDTSevere Thunderstorm WarningLMKCrawford, Orange43 min
Apr 30, 8:19 PM CDTSevere Thunderstorm WarningLMKOhio41 min
Apr 30, 8:25 PM CDTSevere Thunderstorm WarningLMKPerry35 min
Apr 30, 8:27 PM CDTSevere Thunderstorm WarningMEGHenry48 min
Apr 30, 8:32 PM CDTSevere Thunderstorm WarningPAHCalloway43 min
Apr 30, 8:39 PM CDTTornado WarningLMKCrawford, Perry21 min
Apr 30, 8:49 PM CDTSevere Thunderstorm WarningPAHChristian56 min
Apr 30, 8:53 PM CDTSevere Thunderstorm WarningOHXStewart37 min
Apr 30, 8:57 PM CDTSevere Thunderstorm WarningLMKHarrison, Washington33 min
Apr 30, 9:02 PM CDTSevere Thunderstorm WarningLMKClark, Floyd43 min
Apr 30, 9:13 PM CDTSevere Thunderstorm WarningLMKGrayson32 min
Apr 30, 9:16 PM CDTSevere Thunderstorm WarningOHXMontgomery44 min
Apr 30, 9:28 PM CDTSevere Thunderstorm WarningLMKHardin32 min
Apr 30, 9:33 PM CDTSevere Thunderstorm WarningPAHTodd57 min
Apr 30, 9:37 PM CDTSevere Thunderstorm WarningLMKLogan38 min
Apr 30, 9:48 PM CDTSevere Thunderstorm WarningLMKLarue, Nelson42 min
Apr 30, 10:08 PM CDTSevere Thunderstorm WarningLMKSimpson, Warren37 min
Apr 30, 10:19 PM CDTTornado WarningLMKWarren26 min
Apr 30, 10:30 PM CDTSevere Thunderstorm WarningOHXRobertson30 min
Apr 30, 10:33 PM CDTSevere Thunderstorm WarningLMKAllen, Barren42 min
Apr 30, 11:07 PM CDTSevere Thunderstorm WarningLMKMonroe38 min

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.5 hours before the alert went out and 320 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 1997-04-30Temperature 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, Lincoln, IL at 12:00Z on 1997-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 115 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
1130 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
115 m²/s²
0-3 km storm-relative helicity
166 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 30, 12:30 PM CDTTornado WatchSPCAdams, Brown, Bureau, Carroll, Cass, DeKalb and 28 more7 hr
Apr 30, 2:30 PM CDTTornado WatchSPCBond, Christian, Clark, Clay, Clinton, Coles and 20 more7 hr
Apr 30, 3:30 PM CDTTornado WatchSPCChampaign, Cook, DuPage, Ford, Grundy, Iroquois and 8 more6 hr
Apr 30, 5:30 PM CDTTornado WatchSPCClark, Coles, Crawford, Cumberland, Douglas, Edgar and 6 more6 hr

Nearby

Severe Thunderstorm Watches in Kentucky, 1997Severe Thunderstorm Watches in Indiana, 1997Severe Thunderstorm Watches in Illinois, 1997Every severe thunderstorm watch in 1997

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.