Alert archive / Kentucky / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 31, NWS Jackson, KY

April 25, 20154 counties in Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Apr 25, 2015, 10:44 PM EDT for 4 counties in Kentucky. It was in force for 46 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 25, 2015, 10:44 PM EDT (02:44 UTC)
Expired
Apr 25, 2015, 11:30 PM EDT
In force
46 min
Issued by
NWS Jackson, KY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Knott County, KY, Leslie County, KY, Letcher County, KY, Perry County, KY

The radar

The Jackson,KY radar (KJKL), 47 km from the middle of the area, began a volume at 02:45 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 25, 5:57 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.7 hours before the alert went out and 255 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 2015-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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 2015-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 152 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
522 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
152 m²/s²
0-3 km storm-relative helicity
199 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 Apr 25, 10:43 PM EDT, 1 minute earlier.

Area forecast discussion, Apr 25, 10:43 PM EDT, 1 minute before
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Hazardous weather outlook, Apr 25, 10:38 PM EDT, 6 minutes before
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In the hours before

Local storm report, Apr 25, 9:27 PM EDT, 1 hour 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON KY
927 PM EDT SAT APR 25 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0835 PM     HAIL             2 NW BEATTYVILLE        37.60N 83.73W
04/25/2015  M1.00 INCH       LEE                KY   TRAINED SPOTTER

&&

JP
Local storm report, Apr 25, 9:35 PM EDT, 1 hour 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON KY
935 PM EDT SAT APR 25 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0933 PM     HAIL             2 SE WHITESBURG         37.10N 82.80W
04/25/2015  E0.88 INCH       LETCHER            KY   CO-OP OBSERVER

&&

JP
Local storm report, Apr 25, 9:50 PM EDT, 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON KY
950 PM EDT SAT APR 25 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0937 PM     HAIL             KRYPTON                 37.31N 83.34W
04/25/2015  M1.00 INCH       PERRY              KY   PUBLIC

&&

JP
Local storm report, Apr 25, 9:51 PM EDT, 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON KY
951 PM EDT SAT APR 25 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0945 PM     HAIL             HAZARD                  37.25N 83.20W
04/25/2015  E0.75 INCH       PERRY              KY   TRAINED SPOTTER

&&

KAS
Local storm report, Apr 25, 10:00 PM EDT, 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON KY
1000 PM EDT SAT APR 25 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0945 PM     HAIL             3 NNW AVAWAM            37.25N 83.30W
04/25/2015  M1.25 INCH       PERRY              KY   PUBLIC

&&

JP
Special weather statement, Apr 25, 10:24 PM EDT, 20 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 25, 8:01 PM EDTSevere Thunderstorm WarningJKLEstill, Jackson, Lee, Owsley, Rockcastle59 min
Apr 25, 8:03 PM EDTSpecial Weather StatementJKLLetcher27 min
Apr 25, 8:07 PM EDTTornado WarningJKLJackson, Rockcastle23 min
Apr 25, 8:16 PM EDTSpecial Weather StatementJKLKnott, Perry44 min
Apr 25, 8:28 PM EDTTornado WarningJKLJackson, Owsley, Rockcastle32 min
Apr 25, 8:31 PM EDTSevere Thunderstorm WarningJKLBreathitt, Lee, Owsley, Perry, Wolfe59 min
Apr 25, 8:36 PM EDTSpecial Weather StatementJKLPike39 min
Apr 25, 8:45 PM EDTSevere Thunderstorm WarningJKLBreathitt, Clay, Jackson, Lee, Leslie, Owsley and 1 more60 min
Apr 25, 8:51 PM EDTSpecial Weather StatementJKLPike39 min
Apr 25, 8:58 PM EDTTornado WarningJKLClay, Jackson, Owsley, Perry32 min
Apr 25, 8:59 PM EDTAreal Flood AdvisoryJKLBreathitt, Estill, Jackson, Lee, Owsley, Rockcastle3 hr
Apr 25, 9:02 PM EDTSevere Thunderstorm WarningJKLClay, Estill, Jackson, Lee, Owsley, Rockcastle58 min
Apr 25, 9:36 PM EDTSevere Thunderstorm WarningJKLBreathitt, Knott, Leslie, Letcher, Perry, Pike69 min
Apr 25, 9:56 PM EDTSevere Thunderstorm WarningJKLLaurel, McCreary, Pulaski, Wayne, Whitley55 min
Apr 25, 10:00 PM EDTSevere Thunderstorm WarningJKLBreathitt, Clay, Leslie, Owsley, Perry30 min
Apr 25, 10:02 PM EDTSevere Thunderstorm WarningJKLLaurel, McCreary, Pulaski, Wayne, Whitley58 min
Apr 25, 10:19 PM EDTAreal Flood AdvisoryJKLBreathitt, Knott, Leslie, Letcher, Perry, Pike3 hr
Apr 25, 10:24 PM EDTSpecial Weather StatementJKLBell, McCreary, Whitley81 min
Apr 25, 10:42 PM EDTSevere Thunderstorm WarningJKLBell, Clay, Harlan, Knox, Laurel, Leslie and 2 more78 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2015Every severe thunderstorm warning in 2015

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.