Alert archive / Indiana / Tornado Warnings in 2012

Tornado Warning 25, NWS Indianapolis, IN

September 7, 2012Hendricks County, Montgomery County, Putnam County, Indiana

NWS Indianapolis, IN issued this tornado warning at Sep 7, 2012, 7:59 PM EDT for Hendricks County, Montgomery County, Putnam County, Indiana. It was in force for 46 min. 4 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
Sep 7, 2012, 7:59 PM EDT (23:59 UTC)
Expired
Sep 7, 2012, 8:45 PM EDT
In force
46 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon

Counties Hendricks County, IN, Montgomery County, IN, Putnam County, IN

The radar

The Indianapolis radar (KIND), 39 km from the middle of the area, began a volume at 00:00 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
Sep 7, 8:20 PM EDTTSTM WND DMG2 E Danville, INBARN ROOD BLOWN OFF AT 7448 W US36
Sep 7, 8:25 PM EDTHAIL 0.254 N Danville, INLOCATED AT 7100 N SR 39...HEAVY RAIN
Sep 7, 8:34 PM EDTTSTM WND DMG2 E Danville, INBARN ROOD BLOWN OFF AT 7448 W US36
Sep 7, 8:39 PM EDTHAIL 0.252 W Brownsburg, 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.

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

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 12.0 hours before the alert went out and 167 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, Lincoln, IL at 12:00Z on 2012-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 367 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, Lincoln, IL at 12:00Z on 2012-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 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
367 J/kg
Mixed-layer CIN
-412 J/kg
Mixed-layer LCL
1436 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
102 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.

175 
WFUS53 KIND 072359
TORIND
INC063-107-133-080045-
/O.NEW.KIND.TO.W.0025.120907T2359Z-120908T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
759 PM EDT FRI SEP 7 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN HENDRICKS COUNTY IN CENTRAL INDIANA...
  SOUTHEASTERN MONTGOMERY COUNTY IN WEST CENTRAL INDIANA...
  NORTHEASTERN PUTNAM COUNTY IN WEST CENTRAL INDIANA...

* UNTIL 845 PM EDT

* AT 755 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 12 MILES SOUTH OF CRAWFORDSVILLE...AND MOVING
  EAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DANVILLE...
  BROWNSBURG...
  PLAINFIELD...
  NORTH SALEM...
  LIZTON...
  PITTSBORO...
  AVON...

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 55 AND 69.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3995 8687 3994 8669 3992 8669 3992 8633
      3968 8634 3985 8690
TIME...MOT...LOC 0000Z 283DEG 21KT 3988 8678

$$

KOCH
3 follow-up statements
678 
WWUS53 KIND 080016 RRA
SVSIND

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

INC107-133-080026-
/O.CAN.KIND.TO.W.0025.000000T0000Z-120908T0045Z/
MONTGOMERY-PUTNAM-
816 PM EDT FRI SEP 7 2012

...THE TORNADO WARNING FOR SOUTHEASTERN MONTGOMERY AND NORTHEASTERN
PUTNAM COUNTIES IS CANCELLED...

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

LAT...LON 3992 8633 3968 8634 3979 8668 3992 8669
TIME...MOT...LOC 0016Z 287DEG 21KT 3983 8664

$$

INC063-080045-
/O.CON.KIND.TO.W.0025.000000T0000Z-120908T0045Z/
HENDRICKS-
816 PM EDT FRI SEP 7 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN HENDRICKS COUNTY
UNTIL 845 PM EDT...

AT 814 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 9 MILES NORTHWEST OF DANVILLE...OR 20 MILES
SOUTHEAST OF CRAWFORDSVILLE...MOVING EAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  DANVILLE...BROWNSBURG...PLAINFIELD...LIZTON...PITTSBORO AND AVON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3992 8633 3968 8634 3979 8668 3992 8669
TIME...MOT...LOC 0016Z 287DEG 21KT 3983 8664

$$

KOCH
264 
WWUS53 KIND 080027
SVSIND

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

INC063-080045-
/O.CON.KIND.TO.W.0025.000000T0000Z-120908T0045Z/
HENDRICKS-
827 PM EDT FRI SEP 7 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN HENDRICKS COUNTY
UNTIL 845 PM EDT...

AT 824 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR DANVILLE...OR 20 MILES WEST OF INDIANAPOLIS...
MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  BROWNSBURG...PLAINFIELD AND AVON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3990 8657 3992 8633 3968 8634 3977 8661
TIME...MOT...LOC 0027Z 286DEG 26KT 3980 8649

$$

KOCH
565 
WWUS53 KIND 080053
SVSIND

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

INC063-080103-
/O.EXP.KIND.TO.W.0025.000000T0000Z-120908T0045Z/
HENDRICKS-
853 PM EDT FRI SEP 7 2012

...THE TORNADO WARNING FOR NORTHERN HENDRICKS COUNTY HAS EXPIRED...

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

LAT...LON 3990 8657 3992 8633 3968 8634 3977 8661
TIME...MOT...LOC 0027Z 286DEG 26KT 3980 8649

$$

KOCH

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 11:42 AM EDTSpecial Weather StatementINDHoward48 min
Sep 7, 12:06 PM EDTSpecial Weather StatementINDTipton39 min
Sep 7, 12:22 PM EDTSevere Thunderstorm WarningINDDelaware, Howard, Madison, Tipton38 min
Sep 7, 12:52 PM EDTSevere Thunderstorm WarningINDDelaware, Hamilton, Henry, Madison53 min
Sep 7, 1:12 PM EDTSevere Thunderstorm WarningINDDelaware, Henry, Madison, Randolph48 min
Sep 7, 1:38 PM EDTSevere Thunderstorm WarningINDHancock, Henry, Madison52 min
Sep 7, 3:49 PM EDTSevere Thunderstorm WarningINDFountain, Parke, Vermillion41 min
Sep 7, 4:48 PM EDTSevere Thunderstorm WarningINDParke, Putnam24 min
Sep 7, 7:18 PM EDTTornado WarningINDBoone, Clinton, Montgomery, Tippecanoe42 min
Sep 7, 7:40 PM EDTSevere Thunderstorm WarningINDClay, Sullivan, Vigo35 min

Nearby

Tornado Warnings in Indiana, 2012Every tornado warning in 2012Tornadoes 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.