Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 85, NWS Indianapolis, IN

April 1, 2012Hancock County, Marion County, Shelby County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 1, 2012, 10:45 PM EDT for Hancock County, Marion County, Shelby County, Indiana. It was in force for 30 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, 10:45 PM EDT (02:45 UTC)
Expired: Apr 1, 2012, 11:15 PM EDT
In force: 30 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

Counties Hancock County, IN, Marion County, IN, Shelby County, IN

The radar

The Indianapolis radar (KIND), 37 km from the middle of the area, began a volume at 02:48 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
Apr 1, 10:48 PM EDT	HAIL 1	10 E Indianapolis, IN	HAIL WAS COVERING GROUND TO A ONE QUARTER INCH DEPTH
Apr 1, 10:50 PM EDT	HAIL 1.75	New Palestine, IN
Apr 1, 10:52 PM EDT	HAIL 1.5	New Palestine, 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, 2.8 hours before the alert went out and 179 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.

493 
WUUS53 KIND 020245
SVRIND
INC059-097-145-020315-
/O.NEW.KIND.SV.W.0085.120402T0245Z-120402T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1045 PM EDT SUN APR 1 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN HANCOCK COUNTY IN CENTRAL INDIANA...
  SOUTHEASTERN MARION COUNTY IN CENTRAL INDIANA...
  NORTHERN SHELBY COUNTY IN CENTRAL INDIANA...

* UNTIL 1115 PM EDT

* AT 1043 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. 
  THIS STORM WAS LOCATED 7 MILES SOUTH OF LAWRENCE...OR 10 MILES EAST
  OF INDIANAPOLIS...AND MOVING SOUTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SHELBYVILLE...
  GREENFIELD...
  SPRING LAKE...
  NEW PALESTINE...
  MORRISTOWN...
  FAIRLAND...
  BOGGSTOWN...
  WALDRON...

THIS INCLUDES INTERSTATE 70 BETWEEN MILE MARKERS 92 AND 102.

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 93 AND 123.

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.

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

&&

LAT...LON 3945 8590 3955 8596 3964 8595 3964 8601
      3978 8609 3985 8580 3959 8563 3945 8563
TIME...MOT...LOC 0245Z 329DEG 29KT 3975 8595
WIND...HAIL <50MPH 1.50IN

$$

AB/RYAN

2 follow-up statements

256 
WWUS53 KIND 020255
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1055 PM EDT SUN APR 1 2012

INC097-020304-
/O.CAN.KIND.SV.W.0085.000000T0000Z-120402T0315Z/
MARION-
1055 PM EDT SUN APR 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MARION 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 3945 8563 3945 8590 3955 8596 3963 8595
      3976 8595 3977 8575 3976 8574 3959 8563
TIME...MOT...LOC 0254Z 329DEG 29KT 3968 8591

$$

INC059-145-020315-
/O.CON.KIND.SV.W.0085.000000T0000Z-120402T0315Z/
HANCOCK-SHELBY-
1055 PM EDT SUN APR 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
HANCOCK AND NORTHERN SHELBY COUNTIES UNTIL 1115 PM EDT...

AT 1052 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 9 MILES EAST OF BEECH GROVE...OR 13 MILES SOUTHEAST
OF INDIANAPOLIS...MOVING SOUTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  SHELBYVILLE...MORRISTOWN...FAIRLAND...BOGGSTOWN AND WALDRON.

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 3945 8563 3945 8590 3955 8596 3963 8595
      3976 8595 3977 8575 3976 8574 3959 8563
TIME...MOT...LOC 0254Z 329DEG 29KT 3968 8591
WIND...HAIL <50MPH 1.00IN

$$

RYAN

613 
WWUS53 KIND 020306
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1106 PM EDT SUN APR 1 2012

INC059-020316-
/O.CAN.KIND.SV.W.0085.000000T0000Z-120402T0315Z/
HANCOCK-
1106 PM EDT SUN APR 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN HANCOCK 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 3945 8563 3945 8590 3955 8596 3969 8595
      3970 8577 3970 8570 3959 8563
TIME...MOT...LOC 0306Z 329DEG 29KT 3959 8586

$$

INC145-020315-
/O.CON.KIND.SV.W.0085.000000T0000Z-120402T0315Z/
SHELBY-
1106 PM EDT SUN APR 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
SHELBY COUNTY UNTIL 1115 PM EDT...

AT 1102 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 9 MILES NORTHWEST OF SHELBYVILLE...MOVING SOUTHEAST
AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  SHELBYVILLE AND WALDRON.

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 3945 8563 3945 8590 3955 8596 3969 8595
      3970 8577 3970 8570 3959 8563
TIME...MOT...LOC 0306Z 329DEG 29KT 3959 8586
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, 10:14 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Henry, Rush	31 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, 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.