Alert archive / Indiana / Tornado Warnings in 2011

Tornado Warning 20, NWS Indianapolis, IN

April 23, 20114 counties in Indiana

NWS Indianapolis, IN issued this tornado warning at Apr 23, 2011, 12:52 AM EDT for 4 counties in Indiana. It was in force for 23 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 23, 2011, 12:52 AM EDT (04:52 UTC)
Expired: Apr 23, 2011, 1:15 AM EDT
In force: 23 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon

Counties Brown County, IN, Jackson County, IN, Lawrence County, IN, Monroe County, IN

The radar

The Indianapolis radar (KIND), 80 km from the middle of the area, began a volume at 04:53 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 4.9 hours before the alert went out and 227 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: 565 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 265 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

877 
WFUS53 KIND 230452
TORIND
INC013-071-093-105-230515-
/O.NEW.KIND.TO.W.0020.110423T0452Z-110423T0515Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1252 AM EDT SAT APR 23 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN BROWN COUNTY IN SOUTH CENTRAL INDIANA...
  NORTHWESTERN JACKSON COUNTY IN SOUTH CENTRAL INDIANA...
  NORTHERN LAWRENCE COUNTY IN SOUTH CENTRAL INDIANA...
  SOUTHERN MONROE COUNTY IN SOUTH CENTRAL INDIANA...

* UNTIL 115 AM EDT

* AT 1248 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 11 MILES SOUTH OF BLOOMINGTON...AND MOVING EAST
  AT 45 MPH.

* THIS DANGEROUS STORM WILL BE NEAR...
  BARTLETTSVILLE AROUND 100 AM EDT...
  CHARLES DEAM WILDERNESS AND HELTONVILLE AROUND 105 AM EDT...
  NORMAN...ELKINSVILLE AND STORY AROUND 110 AM EDT...
  KURTZ...FREETOWN AND SPURGEONS CORNER AROUND 115 AM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 3892 8667 3911 8665 3911 8610 3903 8609
      3886 8609
TIME...MOT...LOC 0452Z 274DEG 40KT 3902 8653

$$
JH

1 follow-up statement

309 
WWUS53 KIND 230508
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
108 AM EDT SAT APR 23 2011

INC105-230518-
/O.CAN.KIND.TO.W.0020.000000T0000Z-110423T0515Z/
MONROE-
108 AM EDT SAT APR 23 2011

...THE TORNADO WARNING FOR SOUTHERN MONROE COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3893 8633 3899 8635 3900 8633 3904 8633
      3905 8636 3911 8637 3911 8610 3903 8609
      3893 8608
TIME...MOT...LOC 0508Z 266DEG 45KT 3907 8624

$$

INC013-071-093-230515-
/O.CON.KIND.TO.W.0020.000000T0000Z-110423T0515Z/
BROWN-JACKSON-LAWRENCE-
108 AM EDT SAT APR 23 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN LAWRENCE...
NORTHWESTERN JACKSON AND SOUTHERN BROWN COUNTIES UNTIL 115 AM EDT...

AT 107 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 10 MILES SOUTH OF NASHVILLE...OR 16 MILES SOUTHEAST
OF BLOOMINGTON...MOVING EAST AT 50 MPH.

THIS DANGEROUS STORM WILL BE NEAR...
  SPURGEONS CORNER AND FREETOWN AROUND 115 AM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 3893 8633 3899 8635 3900 8633 3904 8633
      3905 8636 3911 8637 3911 8610 3903 8609
      3893 8608
TIME...MOT...LOC 0508Z 266DEG 45KT 3907 8624

$$
JH

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 22, 8:37 PM EDT	River Flood Warning	IND	Shelby	7 days
Apr 22, 8:37 PM EDT	River Flood Warning	IND	Clay, Greene	8 days
Apr 22, 11:00 PM EDT	Special Weather Statement	IND	Daviess	30 min
Apr 22, 11:33 PM EDT	Special Weather Statement	IND	Brown, Monroe	27 min
Apr 22, 11:37 PM EDT	Severe Thunderstorm Warning	IND	Brown, Johnson, Monroe	23 min
Apr 23, 12:01 AM EDT	Severe Thunderstorm Warning	IND	Delaware, Madison	29 min
Apr 23, 12:17 AM EDT	Areal Flood Warning	IND	Daviess, Greene, Knox, Martin, Sullivan	6 hr
Apr 23, 12:37 AM EDT	Severe Thunderstorm Warning	IND	Brown, Greene, Lawrence, Monroe	23 min
Apr 23, 12:48 AM EDT	Severe Thunderstorm Warning	IND	Delaware, Henry, Randolph	27 min
Apr 23, 1:14 AM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Brown, Decatur, Jackson, Jennings	31 min
Apr 23, 1:33 AM EDT	Tornado Warning	IND	Bartholomew, Jackson, Jennings	42 min
Apr 23, 1:47 AM EDT	Severe Thunderstorm Warning	IND	Decatur	28 min
Apr 23, 6:48 AM EDT	Areal Flood Warning	IND	Jackson, Jennings	6 hr
Apr 23, 11:25 AM EDT	River Flood Warning	IND	Carroll, Tippecanoe, White	6 hr
Apr 23, 12:22 PM EDT	Areal Flood Warning	IND	Daviess, Knox, Lawrence, Martin	6 hr
Apr 23, 1:08 PM EDT	Areal Flood Warning	IND	Jackson, Jennings	6 hr
Apr 23, 1:27 PM EDT	Flash Flood Watch	IND	Bartholomew, Boone, Brown, Carroll, Clay, Clinton and 33 more	5 days

Nearby

Tornado Warnings in Indiana, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.