Alert archive / Kentucky / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 32, NWS Louisville, KY

April 24, 20108 counties in Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Apr 24, 2010, 8:27 PM EDT for 8 counties in Kentucky. It was in force for 48 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
Apr 24, 2010, 8:27 PM EDT (00:27 UTC)
Expired
Apr 24, 2010, 9:15 PM EDT
In force
48 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Hail
0.5 in
Wind
60.0 mph

Counties Boyle County, KY, Clark County, KY, Fayette County, KY, Garrard County, KY, Jessamine County, KY, Lincoln County, KY, Madison County, KY, Mercer County, KY

The radar

The Jackson,KY radar (KJKL), 111 km from the middle of the area, began a volume at 00:29 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 24, 7:15 PM EDTTornado WatchSPC8 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.5 hours before the alert went out and 196 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 00:00Z on 2010-04-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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 00:00Z on 2010-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.1939587897Sfc1 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
2 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
893 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
-10 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Louisville, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 24, 7:41 PM EDT, 46 minutes earlier.

Area forecast discussion, Apr 24, 7:41 PM EDT, 46 minutes before
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Hazardous weather outlook, Apr 24, 3:15 PM EDT, 5 hours 12 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOUISVILLE KY
315 PM EDT SAT APR 24 2010

INZ076>079-083-084-089>092-KYZ023>043-045>049-053>057-061>067-
070>078-081-082-250400-
ORANGE IN-WASHINGTON IN-SCOTT IN-JEFFERSON IN-DUBOIS IN-
CRAWFORD IN-PERRY IN-HARRISON IN-FLOYD IN-CLARK IN-HANCOCK KY-
BRECKINRIDGE KY-MEADE KY-OHIO KY-GRAYSON KY-HARDIN KY-BULLITT KY-
JEFFERSON KY-OLDHAM KY-TRIMBLE KY-HENRY KY-SHELBY KY-FRANKLIN KY-
SCOTT KY-HARRISON KY-SPENCER KY-ANDERSON KY-WOODFORD KY-
FAYETTE KY-BOURBON KY-NICHOLAS KY-NELSON KY-WASHINGTON KY-
MERCER KY-JESSAMINE KY-CLARK KY-LARUE KY-MARION KY-BOYLE KY-
GARRARD KY-MADISON KY-BUTLER KY-EDMONSON KY-HART KY-GREEN KY-
TAYLOR KY-CASEY KY-LINCOLN KY-LOGAN KY-WARREN KY-SIMPSON KY-
ALLEN KY-BARREN KY-MONROE KY-METCALFE KY-ADAIR KY-RUSSELL KY-
CUMBERLAND KY-CLINTON KY-
315 PM EDT SAT APR 24 2010 /215 PM CDT SAT APR 24 2010/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
INDIANA AND CENTRAL KENTUCKY.

.DAY ONE...TONIGHT.

SHOWERS AND STORMS ARE EXPECTED TO CONTINUE ACROSS THE REGION THIS
EVENING. THESE STORMS ARE IN ASSOCIATION WITH A DEVELOPING
VIGOROUS LOW PRESSURE SYSTEM EXPECTED TO MOVE NORTH ACROSS THE
MISSISSIPPI RIVER VALLEY. MULTIPLE LINES OF STORMS ARE EXPECTED TO
BRING THE POTENTIAL FOR DAMAGING WINDS AS WELL AS STRONG
TORNADOES...LARGE HAIL...AND FREQUENT CLOUD TO GROUND LIGHTNING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

A COLD FRONT WILL SAG SOUTH ACROSS THE OHIO RIVER DURING THE LATE
AFTERNOON HOURS ON SUNDAY. SCATTERED THUNDERSTORMS OVER SOUTHERN
INDIANA DURING THE AFTERNOON WILL MOVE SOUTHEAST ACROSS NORTH
CENTRAL KENTUCKY BE EARLY EVENING. THESE SHOWERS AND STORMS MAY
BRING GUSTY WINDS AND SMALL HAIL TO LOCATIONS UNDER SOME OF THE
STRONGEST CELLS.

ANOTHER COLD FRONT WILL APPROACH THE REGION FRIDAY...BRINGING A
SLIGHT CHANCE FOR THUNDERSTORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD MONITOR THE WEATHER SITUATION THIS EVENING AND CALL
IN REPORTS AS NECESSARY.

RJS/JBS

In the hours before

Local storm report, Apr 24, 8:02 PM EDT, 25 minutes before
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Local storm report, Apr 24, 8:06 PM EDT, 21 minutes before
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Local storm report, Apr 24, 8:08 PM EDT, 19 minutes before
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Local storm report, Apr 24, 8:13 PM EDT, 14 minutes before
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Local storm report, Apr 24, 8:15 PM EDT, 12 minutes before
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Local storm report, Apr 24, 8:24 PM EDT, 3 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 24, 8:00 PM EDTSpecial Weather StatementLMKAllen, Warren30 min
Apr 24, 8:22 PM EDTAreal Flood AdvisoryLMKBarren, Butler, Edmonson, Green, Hart, Warren3 hr
Apr 24, 9:11 PM EDTAreal Flood AdvisoryLMKBoyle, Clark, Fayette, Garrard, Jessamine, Madison and 3 more3 hr
Apr 24, 9:56 PM EDTSpecial Weather StatementLMKAdair, Clinton, Cumberland, Monroe, Russell34 min
Apr 24, 10:23 PM EDTSevere Thunderstorm WarningLMKAdair, Casey, Clinton, Cumberland, Russell22 min
Apr 24, 10:40 PM EDTSpecial Weather StatementLMKClinton35 min
Apr 24, 10:52 PM EDTSevere Thunderstorm WarningLMKClinton, Cumberland, Russell23 min
Apr 24, 11:13 PM EDTTornado WarningLMKClinton17 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2010Every severe thunderstorm warning in 2010

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.