Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 82, NWS Indianapolis, IN

April 1, 2012Hancock County, Henry County, Rush County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 1, 2012, 10:14 PM EDT for Hancock County, Henry County, Rush County, Indiana. It was in force for 31 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: Apr 1, 2012, 10:14 PM EDT (02:14 UTC)
Expired: Apr 1, 2012, 10:45 PM EDT
In force: 31 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Hancock County, IN, Henry County, IN, Rush County, IN

The radar

The Indianapolis radar (KIND), 61 km from the middle of the area, began a volume at 02:15 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
Apr 1, 10:20 PM EDT	HAIL 0.88	4 Ese Greenfield, IN
Apr 1, 10:25 PM EDT	HAIL 1.5	2 E Greenfield, IN
Apr 1, 10:43 PM EDT	HAIL 1.5	10 Nnw Arlington, 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
Apr 1, 10:03 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.2 hours before the alert went out and 155 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: 663 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 943 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 267 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 6.4

Open this sounding in Storm Lab

The text

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

317 
WUUS53 KIND 020214
SVRIND
INC059-065-139-020245-
/O.NEW.KIND.SV.W.0082.120402T0214Z-120402T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1014 PM EDT SUN APR 1 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN HANCOCK COUNTY IN CENTRAL INDIANA...
  SOUTHWESTERN HENRY COUNTY IN EAST CENTRAL INDIANA...
  RUSH COUNTY IN CENTRAL INDIANA...

* UNTIL 1045 PM EDT

* AT 1011 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
  THUNDERSTORM PRODUCING QUARTER SIZE HAIL.  THIS STORM WAS LOCATED 7
  MILES NORTHEAST OF GREENFIELD...OR 16 MILES SOUTH OF ANDERSON...AND
  MOVING SOUTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RUSHVILLE...
  SHIRLEY...
  KNIGHTSTOWN...
  CARTHAGE...
  MAYS...
  ARLINGTON...

THIS INCLUDES INTERSTATE 70 BETWEEN MILE MARKERS 105 AND 118.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3952 8551 3968 8564 3969 8563 3970 8565
      3988 8581 3995 8571 3995 8561 3967 8529
      3965 8530
TIME...MOT...LOC 0214Z 321DEG 27KT 3985 8566
WIND...HAIL <50MPH 1.00IN

$$

AB/RYAN

2 follow-up statements

305 
WWUS53 KIND 020230
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1030 PM EDT SUN APR 1 2012

INC059-065-139-020245-
/O.CON.KIND.SV.W.0082.000000T0000Z-120402T0245Z/
HANCOCK-HENRY-RUSH-
1030 PM EDT SUN APR 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
HANCOCK...SOUTHWESTERN HENRY AND RUSH COUNTIES UNTIL 1045 PM EDT...

AT 1029 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM PRODUCING QUARTER SIZE HAIL.  THIS STORM WAS LOCATED 9
MILES EAST OF GREENFIELD...OR 18 MILES NORTHEAST OF SHELBYVILLE...
MOVING SOUTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  RUSHVILLE...CARTHAGE...MAYS AND ARLINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN INDIANAPOLIS.

&&

LAT...LON 3952 8551 3968 8564 3969 8563 3971 8566
      3983 8577 3988 8554 3967 8529 3965 8530
TIME...MOT...LOC 0230Z 322DEG 27KT 3975 8560
WIND...HAIL <50MPH 1.00IN

$$

RYAN

455 
WWUS53 KIND 020236
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1036 PM EDT SUN APR 1 2012

INC065-020246-
/O.CAN.KIND.SV.W.0082.000000T0000Z-120402T0245Z/
HENRY-
1036 PM EDT SUN APR 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN HENRY COUNTY IS
CANCELLED...

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

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN INDIANAPOLIS.

LAT...LON 3952 8551 3968 8564 3969 8563 3972 8567
      3978 8572 3980 8559 3979 8559 3979 8555
      3965 8536 3963 8535
TIME...MOT...LOC 0236Z 322DEG 27KT 3971 8558

$$

INC059-139-020245-
/O.CON.KIND.SV.W.0082.000000T0000Z-120402T0245Z/
HANCOCK-RUSH-
1036 PM EDT SUN APR 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
HANCOCK AND RUSH COUNTIES UNTIL 1045 PM EDT...

AT 1034 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM PRODUCING QUARTER SIZE HAIL.  THIS STORM WAS LOCATED 10
MILES SOUTHEAST OF GREENFIELD...OR 17 MILES NORTHEAST OF
SHELBYVILLE...MOVING SOUTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  RUSHVILLE AND ARLINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN INDIANAPOLIS.

&&

LAT...LON 3952 8551 3968 8564 3969 8563 3972 8567
      3978 8572 3980 8559 3979 8559 3979 8555
      3965 8536 3963 8535
TIME...MOT...LOC 0236Z 322DEG 27KT 3971 8558
WIND...HAIL <50MPH 1.00IN

$$

RYAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 1, 9:28 PM EDT	Special Weather Statement	IND	Delaware	47 min
Apr 1, 9:32 PM EDT	Special Weather Statement	IND	Hamilton	43 min
Apr 1, 9:42 PM EDT	Severe Thunderstorm Warning	IND	Hamilton, Hancock, Henry, Madison	33 min
Apr 1, 9:52 PM EDT	Severe Thunderstorm Warning	IND	Boone, Hamilton, Marion	23 min
Apr 1, 10:16 PM EDT	Severe Thunderstorm Warning	IND	Hamilton, Hancock, Marion, Shelby	29 min
Apr 1, 10:44 PM EDT	Severe Thunderstorm Warning	IND	Rush	31 min
Apr 1, 10:45 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Marion, Shelby	30 min
Apr 1, 11:09 PM EDT	Severe Thunderstorm Warning	IND	Decatur, Rush	36 min
Apr 1, 11:14 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Decatur, Shelby	46 min

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.