Alert archive / Kentucky / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 27, NWS Jackson, KY

August 21, 1990Bell County, Harlan County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Aug 21, 1990, 8:33 PM EDT for Bell County, Harlan County, Kentucky. It was in force for 27 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Aug 21, 1990, 8:33 PM EDT (00:33 UTC)
Expired: Aug 21, 1990, 9:00 PM EDT
In force: 27 min
Issued by: NWS Jackson, KY
Area: Whole counties

Counties Bell County, KY, Harlan County, KY

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
Aug 21, 8:45 PM EDT	Thunderstorm Wind 0	Bell, KY

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Huntington/Tri S, WV (KHTS), launched 00:00Z, 0.6 hours before the alert went out and 194 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: 1687 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 826 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, Aug 21, 2:57 PM EDT, 5 hours 36 minutes before

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Special weather statement, Aug 21, 3:51 PM EDT, 4 hours 42 minutes before

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Special weather statement, Aug 21, 4:58 PM EDT, 3 hours 35 minutes before

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Special weather statement, Aug 21, 7:49 PM EDT, 44 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 22, 5:28 AM EDT	Flash Flood Warning	JKL	Meigs	2 hr
Aug 22, 6:39 AM EDT	Flash Flood Warning	JKL	Gallia	2 hr
Aug 22, 1:58 PM EDT	Flash Flood Warning	JKL	Wayne	4 hr

Nearby

Severe Thunderstorm Warnings in Kentucky, 1990 Every severe thunderstorm warning in 1990

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.