Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 202, NWS Indianapolis, IN

August 8, 2012Johnson County, Marion County, Shelby County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 8, 2012, 9:26 PM EDT for Johnson County, Marion 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
Aug 8, 2012, 9:26 PM EDT (01:26 UTC)
Expired
Aug 8, 2012, 9:59 PM EDT
In force
33 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Johnson County, IN, Marion County, IN, Shelby County, IN

The radar

The Indianapolis radar (KIND), 33 km from the middle of the area, began a volume at 01:29 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

TimeReportWhereRemark
Aug 8, 9:29 PM EDTHAIL 0.88Greenwood, IN
Aug 8, 9:29 PM EDTHAIL 1Greenwood, INREPORTED VIA MEDIA FACEBOOK PAGE.
Aug 8, 9:33 PM EDTHAIL 1Greenwood, INQUARTER SIZE HAIL AT GREENWOOD MALL. REPORTED VIA MEDIA FACEBOOK PAGE.

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

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.4 hours before the alert went out and 182 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 00:00Z on 2012-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 571 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2012-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
571 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
2252 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

548 
WUUS53 KIND 090126
SVRIND
INC081-097-145-090215-
/O.NEW.KIND.SV.W.0202.120809T0126Z-120809T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
926 PM EDT WED AUG 8 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN JOHNSON COUNTY IN CENTRAL INDIANA...
  SOUTHEASTERN MARION COUNTY IN CENTRAL INDIANA...
  NORTHWESTERN SHELBY COUNTY IN CENTRAL INDIANA...

* UNTIL 1015 PM EDT

* AT 924 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  GREENWOOD...OR 11 MILES SOUTH OF INDIANAPOLIS...AND MOVING EAST AT
  15 MPH.

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

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 97 AND 106.

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 99 AND 113.

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 3967 8575 3952 8576 3959 8615 3971 8612
TIME...MOT...LOC 0126Z 276DEG 14KT 3962 8608
WIND...HAIL 60MPH 1.00IN

$$

KOCH
2 follow-up statements
678 
WWUS53 KIND 090143
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
943 PM EDT WED AUG 8 2012

INC081-097-145-090215-
/O.CON.KIND.SV.W.0202.000000T0000Z-120809T0215Z/
JOHNSON-MARION-SHELBY-
943 PM EDT WED AUG 8 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
JOHNSON...SOUTHEASTERN MARION AND NORTHWESTERN SHELBY COUNTIES UNTIL
1015 PM EDT...

AT 938 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
EAST OF GREENWOOD...OR 13 MILES SOUTHEAST OF INDIANAPOLIS...MOVING
EAST AT 15 MPH.

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

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 3967 8575 3952 8576 3959 8615 3971 8612
TIME...MOT...LOC 0143Z 276DEG 14KT 3961 8599
WIND...HAIL 60MPH 1.00IN

$$

KOCH
109 
WWUS53 KIND 090159
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
959 PM EDT WED AUG 8 2012

INC081-097-145-090209-
/O.CAN.KIND.SV.W.0202.000000T0000Z-120809T0215Z/
JOHNSON-MARION-SHELBY-
959 PM EDT WED AUG 8 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JOHNSON...
SOUTHEASTERN MARION AND NORTHWESTERN SHELBY COUNTIES IS CANCELLED...

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

LAT...LON 3967 8575 3952 8576 3959 8615 3971 8612
TIME...MOT...LOC 0159Z 276DEG 14KT 3960 8591

$$

NIELD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 9:58 PM EDTAreal Flood AdvisoryINDHendricks, Marion3 hr
Aug 8, 10:46 PM EDTSpecial Weather StatementINDRush44 min
Aug 9, 2:11 AM EDTSpecial Weather StatementINDMontgomery34 min
Aug 9, 2:14 AM EDTSpecial Weather StatementINDVermillion31 min
Aug 9, 2:27 AM EDTAreal Flood AdvisoryINDBoone, Fountain, Montgomery, Parke, Putnam, Vermillion3 hr
Aug 9, 2:46 AM EDTSpecial Weather StatementINDParke, Vermillion44 min
Aug 9, 2:59 AM EDTSevere Thunderstorm WarningINDFountain, Parke, Vermillion46 min
Aug 9, 3:33 AM EDTSpecial Weather StatementINDHamilton42 min
Aug 9, 3:49 AM EDTAreal Flood WarningINDFountain, Montgomery, Parke, Vermillion5 hr
Aug 9, 3:55 AM EDTSpecial Weather StatementINDHendricks, Parke, Putnam50 min
Aug 9, 4:10 AM EDTSpecial Weather StatementINDOwen50 min
Aug 9, 4:27 AM EDTAreal Flood AdvisoryINDHamilton, Hendricks, Marion4 hr
Aug 9, 4:42 AM EDTSpecial Weather StatementINDHendricks, Marion48 min
Aug 9, 6:33 PM EDTSpecial Weather StatementINDFountain27 min
Aug 9, 6:46 PM EDTSevere Thunderstorm WarningINDFountain, Montgomery, Parke44 min
Aug 9, 7:02 PM EDTTornado WarningINDFountain, Montgomery, Parke, Putnam28 min
Aug 9, 7:18 PM EDTSevere Thunderstorm WarningINDFountain, Montgomery, Tippecanoe42 min
Aug 9, 7:27 PM EDTSevere Thunderstorm WarningINDMontgomery, Putnam33 min
Aug 9, 7:56 PM EDTSevere Thunderstorm WarningINDBoone, Hendricks, Montgomery, Putnam34 min
Aug 9, 7:58 PM EDTSevere Thunderstorm WarningINDClinton, Montgomery, Tippecanoe32 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2012Every 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.