Alert archive / Kentucky / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 85, NWS Jackson, KY

August 20, 2019Martin County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Aug 20, 2019, 6:54 PM EDT for Martin County, Kentucky. It was in force for 21 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: Aug 20, 2019, 6:54 PM EDT (22:54 UTC)
Expired: Aug 20, 2019, 7:15 PM EDT
In force: 21 min
Issued by: NWS Jackson, KY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Martin County, KY

The radar

The Jackson,KY radar (KJKL), 74 km from the middle of the area, began a volume at 22:55 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, 10.9 hours before the alert went out and 213 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: 1577 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 1197 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 32 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 Aug 20, 4:32 PM EDT, 2 hours 22 minutes earlier.

Area forecast discussion, Aug 20, 4:32 PM EDT, 2 hours 22 minutes before

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Hazardous weather outlook, Aug 20, 4:04 PM EDT, 2 hours 50 minutes before

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In the hours before

Special weather statement, Aug 20, 5:58 PM EDT, 56 minutes before

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Local storm report, Aug 20, 6:02 PM EDT, 52 minutes before

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Local storm report, Aug 20, 6:04 PM EDT, 50 minutes before

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Special weather statement, Aug 20, 6:15 PM EDT, 39 minutes before

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Special weather statement, Aug 20, 6:24 PM EDT, 30 minutes before

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Local storm report, Aug 20, 6:25 PM EDT, 29 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
Aug 20, 4:35 PM EDT	Special Weather Statement	JKL	Harlan	25 min
Aug 20, 4:42 PM EDT	Special Weather Statement	JKL	Knott	18 min
Aug 20, 4:53 PM EDT	Special Weather Statement	JKL	Estill	22 min
Aug 20, 4:59 PM EDT	Severe Thunderstorm Warning	JKL	Estill	31 min
Aug 20, 5:26 PM EDT	Special Weather Statement	JKL	Perry	19 min
Aug 20, 5:58 PM EDT	Special Weather Statement	JKL	Perry	17 min
Aug 20, 6:15 PM EDT	Special Weather Statement	JKL	Floyd	15 min
Aug 20, 6:24 PM EDT	Special Weather Statement	JKL	Owsley	36 min
Aug 20, 6:30 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt	30 min
Aug 20, 6:41 PM EDT	Severe Thunderstorm Warning	JKL	Breathitt, Perry	19 min
Aug 20, 6:58 PM EDT	Special Weather Statement	JKL	Perry	32 min
Aug 20, 7:05 PM EDT	Special Weather Statement	JKL	Clay	25 min
Aug 20, 7:26 PM EDT	Special Weather Statement	JKL	Bell	19 min
Aug 20, 7:27 PM EDT	Special Weather Statement	JKL	Bell	18 min
Aug 20, 7:33 PM EDT	Severe Thunderstorm Warning	JKL	Bell, Knox	27 min
Aug 20, 7:57 PM EDT	Special Weather Statement	JKL	Harlan	18 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2019 Every severe thunderstorm warning in 2019

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.