Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 208, NWS Indianapolis, IN

August 9, 2012Clinton County, Montgomery County, Tippecanoe County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 9, 2012, 7:58 PM EDT for Clinton County, Montgomery County, Tippecanoe County, Indiana. It was in force for 32 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: Aug 9, 2012, 7:58 PM EDT (23:58 UTC)
Expired: Aug 9, 2012, 8:30 PM EDT
In force: 32 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

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

The radar

The Indianapolis radar (KIND), 79 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

Time	Report	Where	Remark
Aug 9, 8:07 PM EDT	TSTM WND DMG	5 Nne Linden, IN	TREES DOWN ON POWERLINES AT 933 E CR 1050 S. TIME ESTIMATED FROM RADAR.
Aug 9, 8:10 PM EDT	HAIL 1.25	4 N Linden, IN	HAIL LARGER THAN QUARTERS ACCUMULATED TO 1.5 INCHES DEEP REPORTED IN ROMNEY. TIME ESTIMATED FROM RADAR.
Aug 9, 8:21 PM EDT	HAIL 0.7	8 Se Lafayette, IN	DIME SIZE HAIL AT 600 S AND 600 E.
Aug 9, 8:24 PM EDT	TSTM WND DMG	Dayton, IN	TREES AND TREE LIMBS DOWN. ONE TREE WAS DOWN ON A GARAGE. TIME ESTIMATED...BASED ON RADAR.

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
Aug 9, 5:02 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 12.0 hours before the alert went out and 158 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: 396 J/kg
Mixed-layer CIN: -236 J/kg
Mixed-layer LCL: 1480 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 88 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.

179 
WUUS53 KIND 092358
SVRIND
INC023-107-157-100030-
/O.NEW.KIND.SV.W.0208.120809T2358Z-120810T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
758 PM EDT THU AUG 9 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN CLINTON COUNTY IN CENTRAL INDIANA...
  NORTHWESTERN MONTGOMERY COUNTY IN WEST CENTRAL INDIANA...
  SOUTHERN TIPPECANOE COUNTY IN WEST CENTRAL INDIANA...

* UNTIL 830 PM EDT

* AT 756 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. 
  THIS STORM WAS LOCATED 12 MILES SOUTH OF LAFAYETTE...AND MOVING
  EAST AT 25 MPH.

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

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 155 AND 169.

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.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN INDIANAPOLIS.

&&

LAT...LON 4043 8668 4036 8657 4024 8655 4016 8699
      4027 8703
TIME...MOT...LOC 2358Z 250DEG 24KT 4025 8692
WIND...HAIL <50MPH 1.50IN

$$

MRD/MK

1 follow-up statement

894 
WWUS53 KIND 100011
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
811 PM EDT THU AUG 9 2012

INC107-100021-
/O.CAN.KIND.SV.W.0208.000000T0000Z-120810T0030Z/
MONTGOMERY-
811 PM EDT THU AUG 9 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN MONTGOMERY 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 4036 8657 4024 8655 4021 8681 4022 8688
      4026 8692 4031 8693 4043 8668
TIME...MOT...LOC 0011Z 237DEG 26KT 4029 8682

$$

INC023-157-100030-
/O.CON.KIND.SV.W.0208.000000T0000Z-120810T0030Z/
CLINTON-TIPPECANOE-
811 PM EDT THU AUG 9 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN
CLINTON AND SOUTHEASTERN TIPPECANOE COUNTIES UNTIL 830 PM EDT...

AT 810 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. 
THIS STORM WAS LOCATED 9 MILES SOUTH OF LAFAYETTE...MOVING NORTHEAST
AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  CLARKS HILL...DAYTON AND MULBERRY.

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.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN INDIANAPOLIS.

&&

LAT...LON 4036 8657 4024 8655 4021 8681 4022 8688
      4026 8692 4031 8693 4043 8668
TIME...MOT...LOC 0011Z 237DEG 26KT 4029 8682
WIND...HAIL <50MPH 1.50IN

$$

MRD/MK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 9:26 PM EDT	Severe Thunderstorm Warning	IND	Johnson, Marion, Shelby	33 min
Aug 8, 9:58 PM EDT	Areal Flood Advisory	IND	Hendricks, Marion	3 hr
Aug 8, 10:46 PM EDT	Special Weather Statement	IND	Rush	44 min
Aug 9, 2:11 AM EDT	Special Weather Statement	IND	Montgomery	34 min
Aug 9, 2:14 AM EDT	Special Weather Statement	IND	Vermillion	31 min
Aug 9, 2:27 AM EDT	Areal Flood Advisory	IND	Boone, Fountain, Montgomery, Parke, Putnam, Vermillion	3 hr
Aug 9, 2:46 AM EDT	Special Weather Statement	IND	Parke, Vermillion	44 min
Aug 9, 2:59 AM EDT	Severe Thunderstorm Warning	IND	Fountain, Parke, Vermillion	46 min
Aug 9, 3:33 AM EDT	Special Weather Statement	IND	Hamilton	42 min
Aug 9, 3:49 AM EDT	Areal Flood Warning	IND	Fountain, Montgomery, Parke, Vermillion	5 hr
Aug 9, 3:55 AM EDT	Special Weather Statement	IND	Hendricks, Parke, Putnam	50 min
Aug 9, 4:10 AM EDT	Special Weather Statement	IND	Owen	50 min
Aug 9, 4:27 AM EDT	Areal Flood Advisory	IND	Hamilton, Hendricks, Marion	4 hr
Aug 9, 4:42 AM EDT	Special Weather Statement	IND	Hendricks, Marion	48 min
Aug 9, 6:33 PM EDT	Special Weather Statement	IND	Fountain	27 min
Aug 9, 6:46 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Parke	44 min
Aug 9, 7:02 PM EDT	Tornado Warning	IND	Fountain, Montgomery, Parke, Putnam	28 min
Aug 9, 7:18 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Tippecanoe	42 min
Aug 9, 7:27 PM EDT	Severe Thunderstorm Warning	IND	Montgomery, Putnam	33 min
Aug 9, 7:56 PM EDT	Severe Thunderstorm Warning	IND	Boone, Hendricks, Montgomery, Putnam	34 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.