Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 55, NWS Indianapolis, IN

March 23, 2012Hancock County, Shelby County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Mar 23, 2012, 9:39 PM EDT for Hancock County, Shelby County, Indiana. It was in force for 36 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, 9:39 PM EDT (01:39 UTC)
Expired: Mar 23, 2012, 10:15 PM EDT
In force: 36 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Hancock County, IN, Shelby County, IN

The radar

The Indianapolis radar (KIND), 51 km from the middle of the area, began a volume at 01:43 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, 9:53 PM EDT	HAIL 0.5	Greenfield, IN	HAIL HAS BEEN FALLING FOR 10 MINUTES AND CONTINUES TO FALL AT 2203 EDT.
Mar 23, 9:56 PM EDT	HAIL 0.5	Morristown, IN
Mar 23, 10:03 PM EDT	HAIL 0.5	Greenfield, IN

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, 1.7 hours before the alert went out and 166 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.

608 
WUUS53 KIND 240139
SVRIND
INC059-145-240215-
/O.NEW.KIND.SV.W.0055.120324T0139Z-120324T0215Z/

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

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN HANCOCK COUNTY IN CENTRAL INDIANA...
  NORTHERN SHELBY COUNTY IN CENTRAL INDIANA...

* UNTIL 1015 PM EDT

* AT 938 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED 9 MILES SOUTH OF GREENFIELD...OR 10 MILES NORTH
  OF SHELBYVILLE...AND MOVING NORTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GREENFIELD...
  MORRISTOWN...
  SPRING LAKE...

THIS INCLUDES INTERSTATE 70 BETWEEN MILE MARKERS 98 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 3978 8561 3978 8563 3971 8563 3969 8564
      3960 8576 3967 8595 3985 8588 3985 8560
      3982 8560
TIME...MOT...LOC 0140Z 213DEG 24KT 3968 8580
WIND...HAIL <50MPH 1.00IN

$$

PUMA

2 follow-up statements

467 
WWUS53 KIND 240152
SVSIND

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

INC145-240200-
/O.CAN.KIND.SV.W.0055.000000T0000Z-120324T0215Z/
SHELBY-
952 PM EDT FRI MAR 23 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN SHELBY COUNTY IS
CANCELLED...

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

LAT...LON 3978 8561 3978 8563 3970 8563 3971 8591
      3985 8588 3985 8560 3982 8560
TIME...MOT...LOC 0150Z 213DEG 24KT 3974 8575

$$

INC059-240215-
/O.CON.KIND.SV.W.0055.000000T0000Z-120324T0215Z/
HANCOCK-
952 PM EDT FRI MAR 23 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
HANCOCK COUNTY UNTIL 1015 PM EDT...

AT 947 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 5 MILES SOUTH OF GREENFIELD...OR 14 MILES NORTH OF
SHELBYVILLE...MOVING NORTHEAST AT 30 MPH.

THIS STORM IS A HAIL PRODUCER. MOTORISTS REPORT THAT THIS STORM HAS 
PRODUCED 4 INCHES OF ACCUMULATION OF PEA SIZE HAIL ON INTERSTATE 74 
IN SHELBY COUNTY.

LOCATIONS IMPACTED INCLUDE...
  GREENFIELD.

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 3978 8561 3978 8563 3970 8563 3971 8591
      3985 8588 3985 8560 3982 8560
TIME...MOT...LOC 0150Z 213DEG 24KT 3974 8575
WIND...HAIL <50MPH 1.00IN

$$

PUMA

091 
WWUS53 KIND 240205
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1005 PM EDT FRI MAR 23 2012

INC059-240215-
/O.CON.KIND.SV.W.0055.000000T0000Z-120324T0215Z/
HANCOCK-
1005 PM EDT FRI MAR 23 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
HANCOCK COUNTY UNTIL 1015 PM EDT...

AT 1001 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED NEAR GREENFIELD...OR 18 MILES NORTH OF
SHELBYVILLE...MOVING NORTHEAST AT 30 MPH.

IN ADDITION...AT 1003 PM EDT...HALF INCH SIZE HAIL WAS REPORTED IN 
GREENFIELD WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EASTERN HANCOCK COUNTY.

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 3978 8561 3978 8563 3970 8563 3971 8591
      3985 8588 3985 8560 3982 8560
TIME...MOT...LOC 0205Z 213DEG 24KT 3981 8570
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, 9:12 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, 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.