Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 156, NWS Indianapolis, IN

July 19, 2012Clinton County, Montgomery County, Tippecanoe County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 19, 2012, 5:59 PM EDT for Clinton County, Montgomery County, Tippecanoe 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: Jul 19, 2012, 5:59 PM EDT (21:59 UTC)
Expired: Jul 19, 2012, 6:30 PM EDT
In force: 31 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Clinton County, IN, Montgomery County, IN, Tippecanoe County, IN

The radar

The Indianapolis radar (KIND), 78 km from the middle of the area, began a volume at 22:02 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
Jul 19, 6:03 PM EDT	HAIL 0.25	Lafayette, IN	LOCATED AT CR 300 S AND OLD US231 S
Jul 19, 6:10 PM EDT	HAIL 0.25	2 Se Lafayette, IN	LOCATED ON SOUTH 9TH STREET
Jul 19, 6:26 PM EDT	TSTM WND DMG	3 Ne Clarks Hill, IN	SMALLER TREE DOWN... TIME APPROXIMATED

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
Jul 19, 4:11 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.0 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: 1080 J/kg
Mixed-layer CIN: -228 J/kg
Mixed-layer LCL: 1472 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 111 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.

670 
WUUS53 KIND 192159
SVRIND
INC023-107-157-192230-
/O.NEW.KIND.SV.W.0156.120719T2159Z-120719T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
559 PM EDT THU JUL 19 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN CLINTON COUNTY IN CENTRAL INDIANA...
  NORTHEASTERN MONTGOMERY COUNTY IN WEST CENTRAL INDIANA...
  TIPPECANOE COUNTY IN WEST CENTRAL INDIANA...

* UNTIL 630 PM EDT

* AT 558 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
  LAFAYETTE...AND MOVING SOUTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DAYTON...
  MULBERRY...
  CLARKS HILL...
  COLFAX...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 156 AND 175.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 4050 8695 4033 8655 4018 8668 4018 8669
      4016 8669 4013 8672 4035 8707
TIME...MOT...LOC 2200Z 301DEG 22KT 4037 8688
WIND...HAIL 60MPH 1.00IN

$$

50

1 follow-up statement

625 
WWUS53 KIND 192217
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
617 PM EDT THU JUL 19 2012

INC023-107-157-192230-
/O.CON.KIND.SV.W.0156.000000T0000Z-120719T2230Z/
CLINTON-MONTGOMERY-TIPPECANOE-
617 PM EDT THU JUL 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
CLINTON...NORTHEASTERN MONTGOMERY AND SOUTHEASTERN TIPPECANOE
COUNTIES UNTIL 630 PM EDT...

AT 612 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 7 MILES
SOUTHEAST OF LAFAYETTE...MOVING SOUTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  MULBERRY AND CLARKS HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 4033 8655 4018 8668 4018 8669 4016 8669
      4013 8672 4031 8693 4045 8685
TIME...MOT...LOC 2217Z 301DEG 22KT 4032 8676
WIND...HAIL 60MPH 1.00IN

$$

50

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 3:19 AM EDT	Heat Advisory	IND	Bartholomew, Brown, Clay, Daviess, Decatur, Greene and 9 more	17 hr
Jul 19, 3:33 PM EDT	Special Weather Statement	IND	Lawrence	27 min
Jul 19, 3:58 PM EDT	Special Weather Statement	IND	Monroe	32 min
Jul 19, 4:13 PM EDT	Special Weather Statement	IND	Jackson	32 min
Jul 19, 4:28 PM EDT	Severe Thunderstorm Warning	IND	Jackson, Lawrence	47 min
Jul 19, 4:40 PM EDT	Special Weather Statement	IND	Daviess	50 min
Jul 19, 4:54 PM EDT	Special Weather Statement	IND	Jennings	36 min
Jul 19, 5:23 PM EDT	Special Weather Statement	IND	Tippecanoe	37 min
Jul 19, 5:50 PM EDT	Special Weather Statement	IND	Fountain	25 min
Jul 19, 6:16 PM EDT	Special Weather Statement	IND	Parke	29 min
Jul 19, 6:29 PM EDT	Severe Thunderstorm Warning	IND	Hendricks, Montgomery, Putnam	31 min
Jul 19, 6:32 PM EDT	Severe Thunderstorm Warning	IND	Boone, Clinton	28 min
Jul 19, 7:17 PM EDT	Special Weather Statement	IND	Hamilton	28 min
Jul 19, 7:48 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Marion, Rush, Shelby	27 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.