Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 217, NWS Indianapolis, IN

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

NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 9, 2012, 9:06 PM EDT for Carroll County, Clinton County, Tippecanoe County, Indiana. It was in force for 39 min. 1 report 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, 9:06 PM EDT (01:06 UTC)
Expired: Aug 9, 2012, 9:45 PM EDT
In force: 39 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Carroll County, IN, Clinton County, IN, Tippecanoe County, IN

The radar

The Indianapolis radar (KIND), 103 km from the middle of the area, began a volume at 01:05 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, 9:12 PM EDT	HAIL 1.75	6 Sw Flora, IN	REPORTED NEAR RADNOR.

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, 8:40 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.1 hours before the alert went out and 165 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: 680 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 1397 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

941 
WUUS53 KIND 100106
SVRIND
INC015-023-157-100145-
/O.NEW.KIND.SV.W.0217.120810T0106Z-120810T0145Z/

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

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN CARROLL COUNTY IN NORTH CENTRAL INDIANA...
  NORTHWESTERN CLINTON COUNTY IN CENTRAL INDIANA...
  NORTHEASTERN TIPPECANOE COUNTY IN WEST CENTRAL INDIANA...

* UNTIL 945 PM EDT

* AT 905 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
  BROOKSTON...OR 10 MILES SOUTHWEST OF MONTICELLO...AND MOVING
  SOUTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DELPHI...
  YEOMAN...
  BATTLE GROUND...
  ROSSVILLE...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 178 AND 184.

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 4061 8658 4055 8665 4044 8654 4033 8663
      4056 8697 4057 8697 4057 8678 4066 8678
      4067 8676 4069 8676
TIME...MOT...LOC 0106Z 307DEG 23KT 4062 8688
WIND...HAIL 60MPH 1.00IN

$$

MRD/MK

2 follow-up statements

426 
WWUS53 KIND 100125
SVSIND

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

INC015-023-157-100145-
/O.CON.KIND.SV.W.0217.000000T0000Z-120810T0145Z/
CARROLL-CLINTON-TIPPECANOE-
925 PM EDT THU AUG 9 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
CLINTON...SOUTHWESTERN CARROLL AND NORTHEASTERN TIPPECANOE COUNTIES
UNTIL 945 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 5 MILES
SOUTHWEST OF DELPHI...OR 11 MILES NORTHEAST OF LAFAYETTE...MOVING
SOUTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  DELPHI AND ROSSVILLE.

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 4061 8658 4055 8665 4044 8654 4033 8663
      4056 8697 4057 8697 4057 8678 4066 8678
      4067 8676 4069 8676
TIME...MOT...LOC 0125Z 307DEG 23KT 4055 8675
WIND...HAIL 60MPH 1.00IN

$$

KOCH

273 
WWUS53 KIND 100144
SVSIND

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

INC015-023-157-100155-
/O.EXP.KIND.SV.W.0217.000000T0000Z-120810T0145Z/
CARROLL-CLINTON-TIPPECANOE-
944 PM EDT THU AUG 9 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CLINTON...
SOUTHWESTERN CARROLL AND NORTHEASTERN TIPPECANOE COUNTIES HAS
EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

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

LAT...LON 4061 8658 4055 8665 4044 8654 4033 8663
      4056 8697 4057 8697 4057 8678 4066 8678
      4067 8676 4069 8676
TIME...MOT...LOC 0145Z 307DEG 23KT 4047 8662

$$

KOCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 8:24 PM EDT	Severe Thunderstorm Warning	IND	Decatur, Rush	36 min
Aug 9, 8:28 PM EDT	Severe Thunderstorm Warning	IND	Boone, Hendricks	32 min
Aug 9, 8:30 PM EDT	Severe Thunderstorm Warning	IND	Carroll, Clinton, Tippecanoe	30 min
Aug 9, 8:48 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Tippecanoe, Warren	42 min
Aug 9, 8:52 PM EDT	Severe Thunderstorm Warning	IND	Clay, Morgan, Owen, Parke, Putnam	38 min
Aug 9, 8:55 PM EDT	Severe Thunderstorm Warning	IND	Hendricks, Marion	35 min
Aug 9, 8:58 PM EDT	Severe Thunderstorm Warning	IND	Carroll, Howard	47 min
Aug 9, 9:00 PM EDT	Severe Thunderstorm Warning	IND	Decatur, Rush	14 min
Aug 9, 9:26 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Tippecanoe, Warren	49 min
Aug 9, 9:28 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Hendricks, Johnson, Marion, Morgan, Shelby	47 min
Aug 9, 9:58 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Brown, Johnson, Monroe, Morgan, Shelby	62 min
Aug 9, 10:16 PM EDT	Severe Thunderstorm Warning	IND	Boone, Clinton, Montgomery, Tippecanoe	29 min
Aug 9, 10:21 PM EDT	Tornado Warning	IND	Johnson, Shelby	26 min
Aug 9, 10:32 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Rush, Shelby	43 min
Aug 9, 10:53 PM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Decatur, Rush, Shelby	49 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.