Alert archive / Indiana / Tornado Warnings in 2012

Tornado Warning 90, NWS Louisville, KY

May 1, 2012Washington County, Indiana

NWS Louisville, KY issued this tornado warning at May 1, 2012, 5:24 PM EDT for Washington County, Indiana. 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 outline as issued.

The facts

Issued: May 1, 2012, 5:24 PM EDT (21:24 UTC)
Expired: May 1, 2012, 5:45 PM EDT
In force: 21 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon

County Washington County, IN

The radar

The Louisville radar (KLVX), 90 km from the middle of the area, began a volume at 21:27 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 watch it was issued in

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

Issued	Product	Office	Lasted
May 1, 3:01 PM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.4 hours before the alert went out and 221 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: 15 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 516 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 93 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.

107 
WFUS53 KLMK 012124
TORLMK
INC175-012145-
/O.NEW.KLMK.TO.W.0090.120501T2124Z-120501T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LOUISVILLE KY
524 PM EDT TUE MAY 1 2012

THE NATIONAL WEATHER SERVICE IN LOUISVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN WASHINGTON COUNTY IN SOUTH CENTRAL INDIANA...

* UNTIL 545 PM EDT...

* AT 518 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 7 MILES WEST OF MOUNT CARMEL...MOVING NORTHEAST
  AT 40 MPH.

* THIS TORNADIC STORM WILL ALSO IMPACT...
  MCKINLEY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A VEHICLE OR OUTDOORS...MOVE TO
THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING
DEBRIS.

&&

LAT...LON 3877 8604 3876 8601 3877 8599 3877 8596
      3870 8631 3873 8631 3874 8630 3876 8629
      3878 8626 3877 8624 3878 8619 3877 8613
      3879 8608
TIME...MOT...LOC 2122Z 245DEG 35KT 3872 8633

$$

TWF

1 follow-up statement

579 
WWUS53 KLMK 012140
SVSLMK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LOUISVILLE KY
540 PM EDT TUE MAY 1 2012

INC175-012145-
/O.CON.KLMK.TO.W.0090.000000T0000Z-120501T2145Z/
WASHINGTON IN-
540 PM EDT TUE MAY 1 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM EDT FOR NORTHERN
WASHINGTON COUNTY...

AT 536 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH ROTATION. THIS DANGEROUS STORM WAS LOCATED 
OVER NORTHERN WASHINGTON COUNTY...MOVING NORTHEAST AT 40 MPH.

* THIS DANGEROUS STORM WILL ALSO IMPACT...

  MAINLY RURAL AREAS OF NORTHERN WASHINGTON COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A VEHICLE OR OUTDOORS...MOVE TO
THE CLOSEST SUBSTANTIAL SHELTER.

&&

LAT...LON 3876 8602 3877 8599 3872 8619 3877 8622
      3878 8618 3877 8613 3879 8610 3879 8608
TIME...MOT...LOC 2139Z 245DEG 35KT 3876 8612

$$

TWF

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 3:40 PM EDT	Special Weather Statement	LMK	Harrison	35 min
May 1, 4:01 PM EDT	Special Weather Statement	LMK	Clark	29 min
May 1, 4:05 PM EDT	Severe Thunderstorm Warning	LMK	Clark, Jefferson, Scott	25 min
May 1, 4:13 PM EDT	Special Weather Statement	LMK	Clark, Floyd	17 min
May 1, 4:32 PM EDT	Special Weather Statement	LMK	Scott	28 min
May 1, 4:34 PM EDT	Severe Thunderstorm Warning	LMK	Clark, Jefferson	26 min
May 1, 5:16 PM EDT	Special Weather Statement	LMK	Jefferson	29 min
May 1, 5:56 PM EDT	Severe Thunderstorm Warning	LMK	Scott, Washington	34 min
May 1, 6:13 PM EDT	Severe Thunderstorm Warning	LMK	Jefferson	47 min
May 1, 6:40 PM EDT	Severe Thunderstorm Warning	LMK	Jefferson	35 min

Nearby

Tornado Warnings in Indiana, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.