Alert archive / Kentucky / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 2, NWS Jackson, KY

February 20, 2002Knott County, Kentucky

NWS Jackson, KY issued this severe thunderstorm warning at Feb 20, 2002, 6:58 PM EST for Knott County, Kentucky. It was in force for 32 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Feb 20, 2002, 6:58 PM EST (23:58 UTC)
Expired: Feb 20, 2002, 7:30 PM EST
In force: 32 min
Issued by: NWS Jackson, KY
Area: Counties, with a storm outline in the text

County Knott County, KY

The radar

The Jackson,KY radar (KJKL), 45 km from the middle of the area, began a volume at 00:03 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.

What was reported inside it

Time	Report	Where	Remark
Feb 20, 7:29 PM EST	Hail 0.75	Leburn, 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 12.0 hours before the alert went out and 242 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 948 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 543 m²/s²
0-3 km storm-relative helicity: 583 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KJKL 202358
SVRJKL
KYC119-210030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON KY
658 PM EST WED FEB 20 2002

THE NATIONAL WEATHER SERVICE IN JACKSON KY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KNOTT COUNTY

* UNTIL 730 PM EST

* AT 658 PM EST...RADAR INDICATED A SEVERE THUNDERSTORM OVER
  RITCHIE...OR ABOUT 6 MILES WEST OF HINDMAN...MOVING EAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LEBURN AROUND 705 PM EST
  LARKSLANE AROUND 710 PM EST
  DEMO AROUND 715 PM EST

HAIL UP TO THE SIZE OF NICKELS POSSIBLE WITH THIS STORM.

IF YOU ARE IN OR NEAR THE PATH OF THIS STORM...MOVE TO A SUBSTANTIAL
SHELTER UNTIL THE STORM PASSES.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE JACKSON WEATHER SERVICE FORECAST
OFFICE.

LAT...LON 3731 8275 3724 8311 3741 8312 3747 8294
          3746 8284 3742 8284 3742 8280 3739 8276

$$
GREIF

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 20, 6:49 PM EST	Severe Thunderstorm Warning	JKL	Perry	26 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2002 Every severe thunderstorm warning in 2002

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; radar from the NEXRAD Level II archive.