Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 307, NWS Indianapolis, IN

August 24, 20116 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 24, 2011, 11:49 PM EDT for 6 counties in Indiana. It was in force for 41 min. 2 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 24, 2011, 11:49 PM EDT (03:49 UTC)
Expired: Aug 25, 2011, 12:30 AM EDT
In force: 41 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Hamilton County, IN, Hancock County, IN, Henry County, IN, Madison County, IN, Marion County, IN, Rush County, IN

The radar

The Indianapolis radar (KIND), 81 km from the middle of the area, began a volume at 03:49 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 24, 11:51 PM EDT	TSTM WND GST 58	Mccordsville, IN
Aug 24, 11:51 PM EDT	HAIL 0.5	Mccordsville, 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.

Issued	Product	Office	Lasted
Aug 24, 7:08 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 24, 9:18 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 3.8 hours before the alert went out and 143 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: 3854 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1316 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 184 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 15.7

Open this sounding in Storm Lab

The text

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

680 
WUUS53 KIND 250349
SVRIND
INC057-059-065-095-097-139-250430-
/O.NEW.KIND.SV.W.0307.110825T0349Z-110825T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1149 PM EDT WED AUG 24 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN HAMILTON COUNTY IN CENTRAL INDIANA...
  NORTHERN HANCOCK COUNTY IN CENTRAL INDIANA...
  HENRY COUNTY IN EAST CENTRAL INDIANA...
  SOUTHERN MADISON COUNTY IN CENTRAL INDIANA...
  NORTHEASTERN MARION COUNTY IN CENTRAL INDIANA...
  NORTHERN RUSH COUNTY IN CENTRAL INDIANA...

* UNTIL 1230 AM EDT

* AT 1145 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 6 MILES
  EAST OF FISHERS...OR 15 MILES SOUTHWEST OF ANDERSON...AND MOVING
  EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  INGALLS AND PENDLETON AROUND 1155 PM EDT...
  MARKLEVILLE...SHIRLEY AND WILKINSON AROUND 1205 AM EDT...
  CADIZ...KENNARD AND KNIGHTSTOWN AROUND 1210 AM EDT...
  GREENSBORO...SULPHUR SPRINGS...SPICELAND AND DUNREITH AROUND 1215
  AM EDT...
  NEW CASTLE...MOUNT SUMMIT AND LEWISVILLE AROUND 1220 AM EDT...

THIS INCLUDES INTERSTATE 69 BETWEEN MILE MARKERS 5 AND 29.

THIS INCLUDES INTERSTATE 70 BETWEEN MILE MARKERS 98 AND 133.

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 THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3987 8521 3979 8521 3979 8522 3978 8530
      3972 8530 3985 8604 4009 8598 4003 8522
      4000 8522 4000 8519 3988 8520
TIME...MOT...LOC 0350Z 274DEG 44KT 3996 8584
WIND...HAIL 60MPH 1.00IN

$$
JH

3 follow-up statements

014 
WWUS53 KIND 250404
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1204 AM EDT THU AUG 25 2011

INC057-097-250413-
/O.CAN.KIND.SV.W.0307.000000T0000Z-110825T0430Z/
HAMILTON-MARION-
1204 AM EDT THU AUG 25 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HAMILTON AND
NORTHEASTERN MARION COUNTIES IS CANCELLED...

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

LAT...LON 3987 8521 3979 8521 3979 8522 3978 8530
      3972 8530 3982 8586 4008 8582 4003 8522
      4000 8522 4000 8519 3988 8520
TIME...MOT...LOC 0403Z 274DEG 44KT 3995 8566

$$

INC059-065-095-139-250430-
/O.CON.KIND.SV.W.0307.000000T0000Z-110825T0430Z/
HANCOCK-HENRY-MADISON-RUSH-
1204 AM EDT THU AUG 25 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
HANCOCK...HENRY...SOUTHERN MADISON AND NORTHERN RUSH COUNTIES UNTIL
1230 AM EDT...

AT 1158 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 10 MILES
SOUTH OF ANDERSON...MOVING EAST AT 50 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  KENNARD...SHIRLEY AND KNIGHTSTOWN AROUND 1210 AM EDT...
  CADIZ...GREENSBORO...SULPHUR SPRINGS AND SPICELAND AROUND 1215 AM
  EDT...
  NEW CASTLE...MOUNT SUMMIT AND MAYS AROUND 1220 AM EDT...
  SUMMIT LAKE STATE PARK...STRAUGHN AND LEWISVILLE AROUND 1225 AM
  EDT...
  MOORELAND AROUND 1230 AM EDT...

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 THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3987 8521 3979 8521 3979 8522 3978 8530
      3972 8530 3982 8586 4008 8582 4003 8522
      4000 8522 4000 8519 3988 8520
TIME...MOT...LOC 0403Z 274DEG 44KT 3995 8566
WIND...HAIL 60MPH 1.00IN

$$
JH

212 
WWUS53 KIND 250420
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1220 AM EDT THU AUG 25 2011

INC095-250430-
/O.CAN.KIND.SV.W.0307.000000T0000Z-110825T0430Z/
MADISON-
1220 AM EDT THU AUG 25 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MADISON COUNTY IS
CANCELLED...

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

LAT...LON 3987 8521 3979 8521 3979 8522 3978 8530
      3972 8530 3979 8567 3989 8564 3998 8523
      4000 8522 4000 8519 3988 8520
TIME...MOT...LOC 0420Z 274DEG 44KT 3978 8557

$$

INC059-065-139-250430-
/O.CON.KIND.SV.W.0307.000000T0000Z-110825T0430Z/
HANCOCK-HENRY-RUSH-
1220 AM EDT THU AUG 25 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
HANCOCK...SOUTHERN HENRY AND NORTHERN RUSH COUNTIES UNTIL 1230 AM
EDT...

AT 1216 AM 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
EAST OF GREENFIELD...OR 20 MILES NORTHEAST OF SHELBYVILLE...MOVING
EAST AT 50 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  KNIGHTSTOWN AND GREENSBORO AROUND 1225 AM EDT...
  MAYS...DUNREITH...LEWISVILLE AND SPICELAND AROUND 1230 AM EDT...

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 THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 3987 8521 3979 8521 3979 8522 3978 8530
      3972 8530 3979 8567 3989 8564 3998 8523
      4000 8522 4000 8519 3988 8520
TIME...MOT...LOC 0420Z 274DEG 44KT 3978 8557
WIND...HAIL 60MPH 1.00IN

$$
JH

402 
WWUS53 KIND 250426
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1226 AM EDT THU AUG 25 2011

INC059-065-139-250436-
/O.EXP.KIND.SV.W.0307.000000T0000Z-110825T0430Z/
HANCOCK-HENRY-RUSH-
1226 AM EDT THU AUG 25 2011

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL HANCOCK...
SOUTHERN HENRY AND NORTHERN RUSH COUNTIES WILL EXPIRE AT 1230 AM
EDT/1130 PM CDT/...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3987 8521 3979 8521 3979 8522 3978 8530
      3972 8530 3979 8567 3989 8564 3998 8523
      4000 8522 4000 8519 3988 8520
TIME...MOT...LOC 0426Z 274DEG 44KT 3977 8547

$$
JH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 24, 8:10 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Parke, Vermillion, Warren	35 min
Aug 24, 8:15 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Tippecanoe, Warren	30 min
Aug 24, 8:33 PM EDT	Severe Thunderstorm Warning	IND	Carroll, Clinton, Tippecanoe	42 min
Aug 24, 8:43 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Parke, Putnam, Vermillion	47 min
Aug 24, 9:25 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Parke, Putnam, Vermillion	50 min
Aug 24, 10:08 PM EDT	Severe Thunderstorm Warning	IND	Boone, Hendricks, Montgomery, Putnam	27 min
Aug 25, 1:12 AM EDT	Severe Thunderstorm Warning	IND	Decatur, Rush	18 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2011 Every severe thunderstorm warning in 2011

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.