Alert archive / Indiana / Tornado Warnings in 2003

Tornado Warning 1, NWS Louisville, KY

April 20, 2003Dubois County, Indiana

NWS Louisville, KY issued this tornado warning at Apr 20, 2003, 4:30 PM EST for Dubois County, Indiana. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 20, 2003, 4:30 PM EST (21:30 UTC)
Expired: Apr 20, 2003, 5:00 PM EST
In force: 30 min
Issued by: NWS Louisville, KY
Area: Counties, with a storm outline in the text

County Dubois County, IN

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 20, 12:20 PM EST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.5 hours before the alert went out and 243 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: 706 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 255 m²/s²
0-3 km storm-relative helicity: 229 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 
WFUS53 KLMK 202130
TORLMK
INC037-202200-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
430 PM EST SUN APR 20 2003

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL DUBOIS COUNTY IN SOUTH CENTRAL INDIANA

* UNTIL 500 PM EST

* AT 429 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER
  HUNTINGBURG...OR ABOUT 43 MILES EAST OF MOUNT CARMEL...MOVING EAST
  AT 40 MPH.

* THE TORNADIC STORM IS EXPECTED TO BE NEAR...
  MALTERSVILLE...BRETZVILLE AROUND 435 PM EST
  ST. ANTHONY AROUND 440 PM EST
  SCHNELLVILLE...KYANA...CELESTINE AROUND 445 PM EST
  MENTOR...BIRDSEYE AROUND 450 PM EST

THIS REPLACES THE SEVERE THUNDERSTORM WARNING PREVIOUSLY ISSUED FOR 
THE WARNED AREA. TAKE COVER IMMEDIATELY

DAMAGING WIND GUSTS ABOVE 70 MPH ARE ALSO LIKELY WITH THIS STORM

LAT...LON 3824 8690 3825 8708 3841 8706 3843 8671
          3825 8669

$$

SMALLCOMB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 4:11 PM EST	Severe Thunderstorm Warning	LMK	Dubois	49 min
Apr 20, 4:31 PM EST	Tornado Warning	LMK	Dubois	29 min
Apr 20, 4:56 PM EST	Severe Thunderstorm Warning	LMK	Crawford, Orange	49 min
Apr 20, 5:21 PM EST	Severe Thunderstorm Warning	LMK	Dubois	24 min
Apr 20, 5:40 PM EST	Severe Thunderstorm Warning	LMK	Crawford, Perry	40 min
Apr 20, 5:50 PM EST	Severe Thunderstorm Warning	LMK	Washington	25 min
Apr 20, 5:59 PM EST	Severe Thunderstorm Warning	LMK	Perry	46 min
Apr 20, 6:00 PM EST	Severe Thunderstorm Warning	LMK	Perry	45 min
Apr 20, 6:05 PM EST	Severe Thunderstorm Warning	LMK	Orange	25 min
Apr 20, 6:15 PM EST	Severe Thunderstorm Warning	LMK	Scott	30 min
Apr 20, 6:59 PM EST	Severe Thunderstorm Warning	LMK	Harrison	46 min

Nearby

Tornado Warnings in Indiana, 2003 Every tornado warning in 2003 Tornadoes in 2003

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.