Alert archive / Kentucky / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 76, NWS Jackson, KY

July 18, 2013Jackson County, Rockcastle County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Jul 18, 2013, 7:17 PM EDT for Jackson County, Rockcastle County, Kentucky. It was in force for 28 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, 7:17 PM EDT (23:17 UTC)
Expired
Jul 18, 2013, 7:45 PM EDT
In force
28 min
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Jackson County, KY, Rockcastle County, KY

The radar

The Jackson,KY radar (KJKL), 78 km from the middle of the area, began a volume at 23:19 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, 11.3 hours before the alert went out and 229 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

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 Jackson, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 18, 3:57 PM EDT, 3 hours 20 minutes earlier.

Area forecast discussion, Jul 18, 3:57 PM EDT, 3 hours 20 minutes before
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Hazardous weather outlook, Jul 18, 11:51 AM EDT, 7 hours 26 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON KY
1151 AM EDT THU JUL 18 2013

KYZ044-050>052-058>060-068-069-079-080-083>088-104-106>120-191100-
FLEMING-MONTGOMERY-BATH-ROWAN-ESTILL-POWELL-MENIFEE-ROCKCASTLE-
JACKSON-PULASKI-LAUREL-WAYNE-MCCREARY-WHITLEY-KNOX-BELL-HARLAN-
ELLIOTT-MORGAN-JOHNSON-WOLFE-MAGOFFIN-FLOYD-LEE-BREATHITT-KNOTT-
OWSLEY-PERRY-CLAY-LESLIE-LETCHER-MARTIN-PIKE-
INCLUDING THE CITIES OF...FLEMINGSBURG...MOUNT STERLING...
OWINGSVILLE...MOREHEAD...IRVINE...STANTON...FRENCHBURG...
MOUNT VERNON...MCKEE...SOMERSET...LONDON...MONTICELLO...
WHITLEY CITY...CORBIN...WILLIAMSBURG...BARBOURVILLE...MIDDLESBORO...
PINEVILLE...HARLAN...SANDY HOOK...WEST LIBERTY...PAINTSVILLE...
CAMPTON...SALYERSVILLE...PRESTONSBURG...BEATTYVILLE...JACKSON...
HINDMAN...BOONEVILLE...HAZARD...MANCHESTER...HYDEN...WHITESBURG...
INEZ...PIKEVILLE
1151 AM EDT THU JUL 18 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN KENTUCKY.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THUNDERSTORMS WILL BE POSSIBLE. SOME OF THESE MAY BECOME
STRONG...ESPECIALLY DURING THE AFTERNOON AND EVENING. THEY MAY
CONTAIN FREQUENT CLOUD TO GROUND LIGHTNING...TORRENTIAL
RAINFALL...GUSTY WINDS...AS WELL AS ISOLATED OCCURRENCES OF SMALL
HAIL.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

THUNDERSTORMS WILL BE POSSIBLE THROUGHOUT THE PERIOD. SOME OF THESE
MAY BECOME STRONG...ESPECIALLY DURING THE AFTERNOON AND EVENING
HOURS. THEY MAY CONTAIN FREQUENT CLOUD TO GROUND LIGHTNING...TORRENTIAL
RAINFALL...GUSTY WINDS...AS WELL AS ISOLATED OCCURRENCES OF SMALL
HAIL.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ENCOURAGED TO REPORT ANY OCCURRENCES OF HAIL OR DAMAGING
WIND.

GEOGERIAN/HAL

In the hours before

Special weather statement, Jul 18, 3:24 PM EDT, 3 hours 53 minutes before
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Local storm report, Jul 18, 3:40 PM EDT, 3 hours 37 minutes before
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Special weather statement, Jul 18, 4:23 PM EDT, 2 hours 54 minutes before
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Special weather statement, Jul 18, 4:24 PM EDT, 2 hours 53 minutes before
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Special weather statement, Jul 18, 5:46 PM EDT, 1 hour 31 minutes before
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Special weather statement, Jul 18, 6:59 PM EDT, 18 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 8:23 PM EDTAreal Flood AdvisoryJKLPike6 hr
Jul 17, 8:30 PM EDTSevere Thunderstorm WarningJKLLetcher, Pike45 min
Jul 17, 8:38 PM EDTFlash Flood WarningJKLPike6 hr
Jul 18, 1:49 PM EDTAreal Flood AdvisoryJKLBell, Harlan, Knox, Leslie2 hr
Jul 18, 2:26 PM EDTFlash Flood WarningJKLBell, Knox3 hr
Jul 18, 2:45 PM EDTFlash Flood WarningJKLBell, Harlan, Leslie3 hr
Jul 18, 3:17 PM EDTAreal Flood AdvisoryJKLKnox, Whitley3 hr
Jul 18, 4:39 PM EDTAreal Flood AdvisoryJKLMcCreary6 hr
Jul 18, 4:40 PM EDTSevere Thunderstorm WarningJKLMcCreary, Wayne50 min
Jul 18, 5:13 PM EDTSevere Thunderstorm WarningJKLPulaski32 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.