Alert archive / Kentucky / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 124, NWS Louisville, KY

July 18, 2013Madison County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Jul 18, 2013, 7:21 PM EDT for Madison County, Kentucky. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 18, 2013, 7:21 PM EDT (23:21 UTC)
Expired
Jul 18, 2013, 8:00 PM EDT
In force
39 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Madison County, KY

The radar

The Jackson,KY radar (KJKL), 86 km from the middle of the area, began a volume at 23:23 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.4 hours before the alert went out and 195 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, Cncnati-Daytn, OH at 12:00Z on 2013-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1579 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, Cncnati-Daytn, OH at 12:00Z on 2013-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -22 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
1579 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
995 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-22 m²/s²
0-3 km storm-relative helicity
-28 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 17, 8:03 PM EDTSpecial Weather StatementLMKCasey22 min
Jul 17, 8:53 PM EDTSpecial Weather StatementLMKSpencer32 min
Jul 17, 8:54 PM EDTSpecial Weather StatementLMKAdair31 min
Jul 18, 12:34 PM EDTSpecial Weather StatementLMKFayette, Jessamine26 min
Jul 18, 1:05 PM EDTAreal Flood AdvisoryLMKFayette3 hr
Jul 18, 1:39 PM EDTSpecial Weather StatementLMKJessamine31 min
Jul 18, 3:06 PM EDTSpecial Weather StatementLMKMeade29 min
Jul 18, 3:25 PM EDTSpecial Weather StatementLMKCumberland45 min
Jul 18, 4:33 PM EDTSpecial Weather StatementLMKJefferson32 min
Jul 18, 5:00 PM EDTSpecial Weather StatementLMKClinton, Russell45 min
Jul 18, 6:20 PM EDTSpecial Weather StatementLMKMarion30 min
Jul 18, 6:26 PM EDTSpecial Weather StatementLMKSpencer29 min
Jul 18, 7:04 PM EDTSpecial Weather StatementLMKGarrard, Lincoln31 min
Jul 18, 7:05 PM EDTSpecial Weather StatementLMKAdair, Green30 min
Jul 18, 7:19 PM EDTSevere Thunderstorm WarningLMKAdair, Green, Taylor31 min
Jul 18, 7:37 PM EDTSpecial Weather StatementLMKGarrard43 min
Jul 18, 7:38 PM EDTSpecial Weather StatementLMKGrayson32 min
Jul 18, 7:49 PM EDTAreal Flood AdvisoryLMKGarrard116 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2013Every severe thunderstorm warning in 2013

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.