Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 240, NWS Indianapolis, IN

September 7, 20124 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Sep 7, 2012, 9:45 PM EDT for 4 counties in Indiana. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 7, 2012, 9:45 PM EDT (01:45 UTC)
Expired
Sep 7, 2012, 10:30 PM EDT
In force
45 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Decatur County, IN, Johnson County, IN, Rush County, IN, Shelby County, IN

The radar

The Indianapolis radar (KIND), 70 km from the middle of the area, began a volume at 01:47 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Sep 7, 4:41 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.8 hours before the alert went out and 153 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 2012-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 531 joules per kilogram.LCLLFCEL10008507005003002001001 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 2012-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.19395878Sfc1 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
531 J/kg
Mixed-layer CIN
-83 J/kg
Mixed-layer LCL
1512 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
195 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

626 
WUUS53 KIND 080145
SVRIND
INC031-081-139-145-080230-
/O.NEW.KIND.SV.W.0240.120908T0145Z-120908T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
945 PM EDT FRI SEP 7 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DECATUR COUNTY IN CENTRAL INDIANA...
  EAST CENTRAL JOHNSON COUNTY IN CENTRAL INDIANA...
  SOUTHERN RUSH COUNTY IN CENTRAL INDIANA...
  SHELBY COUNTY IN CENTRAL INDIANA...

* UNTIL 1030 PM EDT

* AT 943 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR SHELBYVILLE...AND MOVING
  EAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GREENSBURG...
  MORRISTOWN...
  GENEVA...
  WALDRON...
  MANILLA...
  ARLINGTON...
  ST. PAUL...
  BURNEY...
  MILFORD...
  MOSCOW...
  ADAMS...
  MILROY...
  SANDUSKY...
  NEW SALEM...
  CLARKSBURG...
  LAKE SANTEE...
  NEWPOINT...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 84 AND 88.

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 108 AND 144.

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.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3928 8529 3922 8539 3932 8569 3935 8569
      3935 8578 3944 8604 3969 8573 3957 8529
TIME...MOT...LOC 0146Z 286DEG 31KT 3953 8577
WIND...HAIL 60MPH <.75IN

$$

KOCH
3 follow-up statements
298 
WWUS53 KIND 080200
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1000 PM EDT FRI SEP 7 2012

INC031-081-139-145-080230-
/O.CON.KIND.SV.W.0240.000000T0000Z-120908T0230Z/
DECATUR-JOHNSON-RUSH-SHELBY-
1000 PM EDT FRI SEP 7 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR DECATUR...EAST
CENTRAL JOHNSON...SOUTHERN RUSH AND SHELBY COUNTIES UNTIL 1030 PM
EDT...

AT 957 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED 7 MILES EAST OF SHELBYVILLE...MOVING
EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  GREENSBURG...ST. PAUL...BURNEY...MILFORD...MOSCOW...ADAMS...
  MILROY...SANDUSKY...NEW SALEM...CLARKSBURG...LAKE SANTEE AND
  NEWPOINT.

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.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3928 8529 3922 8539 3932 8569 3935 8569
      3935 8578 3944 8604 3969 8573 3957 8529
TIME...MOT...LOC 0200Z 286DEG 31KT 3949 8562
WIND...HAIL 60MPH <.75IN

$$

TDUD
223 
WWUS53 KIND 080215
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1015 PM EDT FRI SEP 7 2012

INC031-081-139-145-080230-
/O.CON.KIND.SV.W.0240.000000T0000Z-120908T0230Z/
DECATUR-JOHNSON-RUSH-SHELBY-
1015 PM EDT FRI SEP 7 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR DECATUR...EAST
CENTRAL JOHNSON...SOUTHERN RUSH AND SHELBY COUNTIES UNTIL 1030 PM
EDT...

AT 1011 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH.  THIS STORM WAS LOCATED 8 MILES NORTH OF GREENSBURG...OR 15
MILES EAST OF SHELBYVILLE...MOVING EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  GREENSBURG...NEW SALEM...CLARKSBURG...LAKE SANTEE AND NEWPOINT.

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.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3928 8529 3922 8539 3932 8569 3935 8569
      3935 8578 3944 8604 3969 8573 3957 8529
TIME...MOT...LOC 0215Z 286DEG 31KT 3945 8546
WIND...HAIL 60MPH <.75IN

$$

TDUD
200 
WWUS53 KIND 080226
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1026 PM EDT FRI SEP 7 2012

INC031-081-139-145-080236-
/O.EXP.KIND.SV.W.0240.000000T0000Z-120908T0230Z/
DECATUR-JOHNSON-RUSH-SHELBY-
1026 PM EDT FRI SEP 7 2012

...THE SEVERE THUNDERSTORM WARNING FOR DECATUR...EAST CENTRAL
JOHNSON...SOUTHERN RUSH AND SHELBY COUNTIES WILL EXPIRE AT 1030 PM
EDT/930 PM CDT/...

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

LAT...LON 3928 8529 3922 8539 3932 8569 3935 8569
      3935 8578 3944 8604 3969 8573 3957 8529
TIME...MOT...LOC 0226Z 286DEG 31KT 3942 8534

$$

TDUD

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 8:26 PM EDTSevere Thunderstorm WarningINDClay, Greene, Knox, Sullivan, Vigo49 min
Sep 7, 8:41 PM EDTSevere Thunderstorm WarningINDBoone, Hamilton, Marion49 min
Sep 7, 9:17 PM EDTAreal Flood AdvisoryINDBoone, Hamilton, Hancock, Johnson, Marion, Morgan3 hr
Sep 7, 10:32 PM EDTAreal Flood AdvisoryINDDaviess, Knox, Lawrence, Martin3 hr
Sep 7, 10:39 PM EDTAreal Flood AdvisoryINDShelby3 hr
Sep 7, 10:48 PM EDTTornado WarningINDBartholomew, Decatur, Jennings13 min
Sep 7, 11:04 PM EDTSevere Thunderstorm WarningINDJackson, Jennings41 min
Sep 8, 12:29 AM EDTAreal Flood AdvisoryINDMarion3 hr
Sep 8, 3:36 AM EDTAreal Flood AdvisoryINDMarion, Morgan4 hr
Sep 8, 7:08 AM EDTAreal Flood AdvisoryINDMarion, Morgan4 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.