Alert archive / Indiana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 39, NWS Louisville, KY

February 18, 2000Perry County, Indiana

NWS Louisville, KY issued this severe thunderstorm warning at Feb 18, 2000, 4:01 PM EST for Perry County, Indiana. It was in force for 29 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: Feb 18, 2000, 4:01 PM EST (21:01 UTC)
Expired: Feb 18, 2000, 4:30 PM EST
In force: 29 min
Issued by: NWS Louisville, KY
Area: Whole counties

County Perry County, IN

What was reported inside it

Time	Report	Where	Remark
Feb 18, 4:10 PM EST	Hail 0.75	Tell City, IN

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

Nashville Metro, TN (KBNA), launched 12:00Z, 9.0 hours before the alert went out and 217 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: 4 J/kg
Mixed-layer CIN: -162 J/kg
Mixed-layer LCL: 608 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 541 m²/s²
0-3 km storm-relative helicity: 683 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSDF 182102
SVRSDF
INC123-182130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
401 PM EST FRI FEB 18 2000

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PERRY COUNTY IN SOUTH CENTRAL INDIANA

* UNTIL 430 PM EST (430 PM EST)

* AT 400 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM ON THE SPENCER/PERRY COUNTY LINE...OR 50 MILES
  WEST OF LOUISVILLE... MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  GATCHEL AND LILLY DALE BY 415 PM EST

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS!

.END,/VLD

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 18, 4:12 PM EST	Severe Thunderstorm Warning	LMK	Crawford, Harrison	33 min
Feb 18, 5:17 PM EST	Severe Thunderstorm Warning	LMK	Harrison	33 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2000 Every severe thunderstorm warning in 2000

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.