Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 54, NWS Indianapolis, IN

March 23, 2012Johnson County, Shelby County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Mar 23, 2012, 9:12 PM EDT for Johnson County, Shelby County, Indiana. It was in force for 33 min. 3 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, 9:12 PM EDT (01:12 UTC)
Expired: Mar 23, 2012, 9:45 PM EDT
In force: 33 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Johnson County, IN, Shelby County, IN

The radar

The Indianapolis radar (KIND), 36 km from the middle of the area, began a volume at 01:15 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, 9:25 PM EDT	HAIL 1	Fairland, IN
Mar 23, 9:26 PM EDT	HAIL 0.25	5 Nw Fairland, IN
Mar 23, 9:46 PM EDT	HAIL 0.25	5 Ne Boggstown, IN	HAIL 6 INCHES IN DEPTH

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, 1.2 hours before the alert went out and 180 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.

567 
WUUS53 KIND 240112
SVRIND
INC081-145-240145-
/O.NEW.KIND.SV.W.0054.120324T0112Z-120324T0145Z/

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

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN JOHNSON COUNTY IN CENTRAL INDIANA...
  NORTHERN SHELBY COUNTY IN CENTRAL INDIANA...

* UNTIL 945 PM EDT

* AT 910 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED 7 MILES EAST OF FRANKLIN...OR 8 MILES WEST OF
  SHELBYVILLE...AND MOVING NORTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BOGGSTOWN...
  FAIRLAND...
  MORRISTOWN...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 90 AND 93.

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 101 AND 112.

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 3944 8592 3951 8606 3964 8597 3964 8595
      3967 8595 3970 8593 3970 8564 3969 8563
TIME...MOT...LOC 0112Z 210DEG 22KT 3951 8592
WIND...HAIL <50MPH 1.00IN

$$

PUMA

2 follow-up statements

367 
WWUS53 KIND 240125
SVSIND

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

INC081-240135-
/O.CAN.KIND.SV.W.0054.000000T0000Z-120324T0145Z/
JOHNSON-
925 PM EDT FRI MAR 23 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JOHNSON COUNTY IS
CANCELLED...

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

LAT...LON 3952 8585 3957 8595 3967 8595 3970 8593
      3970 8564 3969 8563
TIME...MOT...LOC 0125Z 217DEG 22KT 3958 8588

$$

INC145-240145-
/O.CON.KIND.SV.W.0054.000000T0000Z-120324T0145Z/
SHELBY-
925 PM EDT FRI MAR 23 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
SHELBY COUNTY UNTIL 945 PM EDT...

AT 924 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 7 MILES NORTHWEST OF SHELBYVILLE...MOVING NORTHEAST
AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  FAIRLAND AND MORRISTOWN.

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.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3952 8585 3957 8595 3967 8595 3970 8593
      3970 8564 3969 8563
TIME...MOT...LOC 0125Z 217DEG 22KT 3958 8588
WIND...HAIL <50MPH 1.00IN

$$

PUMA

841 
WWUS53 KIND 240138
SVSIND

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

INC145-240145-
/O.CON.KIND.SV.W.0054.000000T0000Z-120324T0145Z/
SHELBY-
938 PM EDT FRI MAR 23 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
SHELBY COUNTY UNTIL 945 PM EDT...

AT 933 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 7 MILES NORTHWEST OF SHELBYVILLE...MOVING NORTHEAST
AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  MORRISTOWN.

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.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3952 8585 3957 8595 3967 8595 3970 8593
      3970 8564 3969 8563
TIME...MOT...LOC 0138Z 217DEG 22KT 3964 8582
WIND...HAIL <50MPH 1.00IN

$$

KOCH

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, 8:43 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Brown, Jackson, Johnson	32 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, 9:26 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.