Alert archive / Kentucky / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 26, NWS Jackson, KY

May 5, 2018Pulaski County, Wayne County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at May 5, 2018, 5:00 PM EDT for Pulaski County, Wayne County, Kentucky. It was in force for 45 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: May 5, 2018, 5:00 PM EDT (21:00 UTC)
Expired: May 5, 2018, 5:45 PM EDT
In force: 45 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Pulaski County, KY, Wayne County, KY

The radar

The Jackson,KY radar (KJKL), 142 km from the middle of the area, began a volume at 21:03 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

Nashville Metro, TN (KBNA), launched 12:00Z, 9.0 hours before the alert went out and 193 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 277 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 453 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -48 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -0.7

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 May 5, 4:40 PM EDT, 20 minutes earlier.

Area forecast discussion, May 5, 4:40 PM EDT, 20 minutes before

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Hazardous weather outlook, May 5, 3:50 PM EDT, 1 hour 10 minutes before

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In the hours before

Local storm report, May 5, 4:16 PM EDT, 44 minutes before

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Local storm report, May 5, 4:33 PM EDT, 27 minutes before

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Special weather statement, May 5, 4:47 PM EDT, 13 minutes before

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Special weather statement, May 5, 4:53 PM EDT, 7 minutes before

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Special weather statement, May 5, 4:55 PM EDT, 5 minutes before

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Local storm report, May 5, 5:00 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 5:04 AM EDT	Special Weather Statement	JKL	Jackson, Rockcastle	26 min
May 5, 2:50 PM EDT	Special Weather Statement	JKL	Harlan	40 min
May 5, 2:53 PM EDT	Special Weather Statement	JKL	Perry	37 min
May 5, 3:00 PM EDT	Severe Thunderstorm Warning	JKL	Harlan, Leslie	30 min
May 5, 3:10 PM EDT	Special Weather Statement	JKL	Knott	35 min
May 5, 3:53 PM EDT	Severe Thunderstorm Warning	JKL	Floyd, Letcher, Pike	37 min
May 5, 4:12 PM EDT	Severe Thunderstorm Warning	JKL	Wayne	48 min
May 5, 4:30 PM EDT	Severe Thunderstorm Warning	JKL	Pike	46 min
May 5, 4:47 PM EDT	Special Weather Statement	JKL	Pike	43 min
May 5, 4:53 PM EDT	Special Weather Statement	JKL	Pulaski	52 min
May 5, 4:55 PM EDT	Special Weather Statement	JKL	Knox	65 min
May 5, 5:47 PM EDT	Special Weather Statement	JKL	Rockcastle	28 min
May 5, 6:16 PM EDT	Special Weather Statement	JKL	Bell, Jackson, Knox, Laurel, Rockcastle	44 min
May 5, 7:32 PM EDT	Special Weather Statement	JKL	Breathitt	43 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2018 Every severe thunderstorm warning in 2018

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.