Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 221, NWS Indianapolis, IN

August 9, 20124 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 9, 2012, 10:16 PM EDT for 4 counties in Indiana. It was in force for 29 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: Aug 9, 2012, 10:16 PM EDT (02:16 UTC)
Expired: Aug 9, 2012, 10:45 PM EDT
In force: 29 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

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

The radar

The Indianapolis radar (KIND), 48 km from the middle of the area, began a volume at 02:19 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.

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, 2.3 hours before the alert went out and 163 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.

521 
WUUS53 KIND 100216
SVRIND
INC011-023-107-157-100245-
/O.NEW.KIND.SV.W.0221.120810T0216Z-120810T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1016 PM EDT THU AUG 9 2012

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN BOONE COUNTY IN CENTRAL INDIANA...
  SOUTHWESTERN CLINTON COUNTY IN CENTRAL INDIANA...
  MONTGOMERY COUNTY IN WEST CENTRAL INDIANA...
  SOUTHEASTERN TIPPECANOE COUNTY IN WEST CENTRAL INDIANA...

* UNTIL 1045 PM EDT

* AT 1015 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 13 MILES WEST OF FRANKFORT TO CRAWFORDSVILLE...AND MOVING
  SOUTHEAST AT 30 MPH. NICKEL SIZE HAIL MAY ALSO ACCOMPANY THESE
  DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE...
  LEBANON...
  DARLINGTON...
  COLFAX...
  NEW MARKET...
  THORNTOWN...
  LADOGA...
  NEW ROSS...
  ADVANCE...
  ULEN...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 140 AND 162.

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 30 AND 51.

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 THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4009 8641 3992 8667 3992 8669 3991 8669
      3986 8676 3986 8685 4001 8708 4032 8670
TIME...MOT...LOC 0217Z 304DEG 26KT 4022 8673 4002 8692
WIND...HAIL 60MPH 0.88IN

$$

NIELD

2 follow-up statements

638 
WWUS53 KIND 100226
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1026 PM EDT THU AUG 9 2012

INC011-023-107-157-100245-
/O.CON.KIND.SV.W.0221.000000T0000Z-120810T0245Z/
BOONE-CLINTON-MONTGOMERY-TIPPECANOE-
1026 PM EDT THU AUG 9 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
CLINTON...WESTERN BOONE...MONTGOMERY AND SOUTHEASTERN TIPPECANOE
COUNTIES UNTIL 1045 PM EDT...

AT 1024 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 11 MILES SOUTHWEST OF FRANKFORT TO CRAWFORDSVILLE...MOVING
SOUTHEAST AT 30 MPH. NICKEL SIZE HAIL MAY ALSO ACCOMPANY THESE
DAMAGING WINDS.

LOCATIONS IMPACTED INCLUDE...
  LEBANON...THORNTOWN...LADOGA...NEW ROSS...ADVANCE AND ULEN.

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 THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4009 8641 3992 8667 3992 8669 3991 8669
      3986 8676 3986 8685 4001 8708 4032 8670
TIME...MOT...LOC 0226Z 304DEG 26KT 4018 8666 3998 8685
WIND...HAIL 60MPH 0.88IN

$$

KOCH

565 
WWUS53 KIND 100241
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1041 PM EDT THU AUG 9 2012

INC011-023-107-157-100252-
/O.EXP.KIND.SV.W.0221.000000T0000Z-120810T0245Z/
BOONE-CLINTON-MONTGOMERY-TIPPECANOE-
1041 PM EDT THU AUG 9 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CLINTON...WESTERN
BOONE...MONTGOMERY AND SOUTHEASTERN TIPPECANOE COUNTIES WILL EXPIRE
AT 1045 PM EDT/945 PM CDT/...

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

LAT...LON 4009 8641 3992 8667 3992 8669 3991 8669
      3986 8676 3986 8685 4001 8708 4032 8670
TIME...MOT...LOC 0242Z 304DEG 26KT 4011 8654 3991 8673

$$

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, 9:06 PM EDT	Severe Thunderstorm Warning	IND	Carroll, Clinton, Tippecanoe	39 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, 10:21 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.