Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 52, NWS Indianapolis, IN

March 23, 20124 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Mar 23, 2012, 8:43 PM EDT for 4 counties in Indiana. It was in force for 32 min. 2 reports 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: Mar 23, 2012, 8:43 PM EDT (00:43 UTC)
Expired: Mar 23, 2012, 9:15 PM EDT
In force: 32 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Bartholomew County, IN, Brown County, IN, Jackson County, IN, Johnson County, IN

The radar

The Indianapolis radar (KIND), 65 km from the middle of the area, began a volume at 00:47 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
Mar 23, 8:44 PM EDT	HAIL 0.5	Nashville, IN
Mar 23, 8:46 PM EDT	HAIL 0.5	Nashville, IN	HAIL ACCUMULATION IS 1 INCH DEEP

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Mar 23, 6:25 PM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.7 hours before the alert went out and 215 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: 672 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 552 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

224 
WUUS53 KIND 240043
SVRIND
INC005-013-071-081-240115-
/O.NEW.KIND.SV.W.0052.120324T0043Z-120324T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
843 PM EDT FRI MAR 23 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN BARTHOLOMEW COUNTY IN CENTRAL INDIANA...
  BROWN COUNTY IN SOUTH CENTRAL INDIANA...
  NORTHWESTERN JACKSON COUNTY IN SOUTH CENTRAL INDIANA...
  SOUTHWESTERN JOHNSON COUNTY IN CENTRAL INDIANA...

* UNTIL 915 PM EDT

* AT 837 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR NASHVILLE...OR 15 MILES EAST OF
  BLOOMINGTON...AND MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NASHVILLE...
  GNAW BONE...
  HELMSBURG...
  BEANBLOSSOM...
  SPEARSVILLE...
  PEOGA...
  PRINCES LAKES...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 3899 8628 3899 8632 3905 8632 3905 8634
      3911 8637 3934 8626 3934 8625 3938 8625
      3935 8598 3896 8622 3893 8628
TIME...MOT...LOC 0043Z 203DEG 27KT 3917 8621
WIND...HAIL <50MPH 1.00IN

$$

PUMA

2 follow-up statements

245 
WWUS53 KIND 240100
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
900 PM EDT FRI MAR 23 2012

INC071-240111-
/O.CAN.KIND.SV.W.0052.000000T0000Z-120324T0115Z/
JACKSON-
900 PM EDT FRI MAR 23 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN JACKSON COUNTY IS
CANCELLED...

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

LAT...LON 3935 8598 3920 8609 3924 8630 3930 8628
      3934 8626 3934 8625 3938 8625
TIME...MOT...LOC 0101Z 210DEG 26KT 3928 8614

$$

INC005-013-081-240115-
/O.CON.KIND.SV.W.0052.000000T0000Z-120324T0115Z/
BARTHOLOMEW-BROWN-JOHNSON-
900 PM EDT FRI MAR 23 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
BROWN...NORTHWESTERN BARTHOLOMEW AND SOUTHWESTERN JOHNSON COUNTIES
UNTIL 915 PM EDT...

AT 856 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 5 MILES NORTHEAST OF NASHVILLE...OR 14 MILES WEST
OF COLUMBUS...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  SPEARSVILLE...PEOGA AND PRINCES LAKES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 3935 8598 3920 8609 3924 8630 3930 8628
      3934 8626 3934 8625 3938 8625
TIME...MOT...LOC 0101Z 210DEG 26KT 3928 8614
WIND...HAIL <50MPH 1.00IN

$$

PUMA

443 
WWUS53 KIND 240113
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
913 PM EDT FRI MAR 23 2012

INC005-013-081-240123-
/O.EXP.KIND.SV.W.0052.000000T0000Z-120324T0115Z/
BARTHOLOMEW-BROWN-JOHNSON-
913 PM EDT FRI MAR 23 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BROWN...NORTHWESTERN
BARTHOLOMEW AND SOUTHWESTERN JOHNSON COUNTIES WILL EXPIRE AT 915 PM
EDT/815 PM CDT/...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

LAT...LON 3935 8598 3920 8609 3924 8630 3930 8628
      3934 8626 3934 8625 3938 8625
TIME...MOT...LOC 0113Z 210DEG 26KT 3935 8608

$$

PUMA

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 23, 8:10 PM EDT	Severe Thunderstorm Warning	IND	Brown, Johnson, Morgan	50 min
Mar 23, 8:20 PM EDT	Severe Thunderstorm Warning	IND	Brown, Jackson, Lawrence, Monroe	40 min
Mar 23, 8:41 PM EDT	Severe Thunderstorm Warning	IND	Johnson, Shelby	34 min
Mar 23, 9:07 PM EDT	Areal Flood Advisory	IND	Johnson	3 hr
Mar 23, 9:08 PM EDT	Severe Thunderstorm Warning	IND	Decatur, Jennings	52 min
Mar 23, 9:12 PM EDT	Severe Thunderstorm Warning	IND	Johnson, Shelby	33 min
Mar 23, 9:26 PM EDT	Areal Flood Advisory	IND	Shelby	8 hr
Mar 23, 9:39 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Shelby	36 min
Mar 23, 10:05 PM EDT	Areal Flood Advisory	IND	Hancock	4 hr
Mar 23, 10:13 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Hancock, Henry, Madison, Rush	47 min
Mar 23, 10:28 PM EDT	Areal Flood Advisory	IND	Decatur, Jennings	4 hr
Mar 23, 11:00 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Henry	60 min
Mar 24, 12:57 AM EDT	Areal Flood Advisory	IND	Johnson	4 hr
Mar 24, 2:29 AM EDT	Areal Flood Advisory	IND	Decatur, Jennings	3 hr
Mar 24, 5:57 PM EDT	River Flood Warning	IND	Jackson, Lawrence, Washington	66 hr
Mar 24, 7:59 PM EDT	River Flood Warning	IND	Jackson, Lawrence, Washington	5 days

Nearby

Severe Thunderstorm Warnings in Indiana, 2012 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.