Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 79, NWS Indianapolis, IN

April 23, 2011Delaware County, Madison County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 23, 2011, 12:01 AM EDT for Delaware County, Madison County, Indiana. It was in force for 29 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: Apr 23, 2011, 12:01 AM EDT (04:01 UTC)
Expired: Apr 23, 2011, 12:30 AM EDT
In force: 29 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Delaware County, IN, Madison County, IN

The radar

The Indianapolis radar (KIND), 100 km from the middle of the area, began a volume at 04:02 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
Apr 23, 12:13 AM EDT	HAIL 1.25	Summitville, IN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 4.0 hours before the alert went out and 171 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 565 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 265 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

The text

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

576 
WUUS53 KIND 230401
SVRIND
INC035-095-230430-
/O.NEW.KIND.SV.W.0079.110423T0401Z-110423T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1201 AM EDT SAT APR 23 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN DELAWARE COUNTY IN EAST CENTRAL INDIANA...
  NORTHERN MADISON COUNTY IN CENTRAL INDIANA...

* 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 NEAR
  ELWOOD...OR 12 MILES NORTHWEST OF ANDERSON...AND MOVING NORTHEAST
  AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SUMMITVILLE AROUND 1210 AM EDT...
  GASTON AROUND 1215 AM EDT...
  MATTHEWS AROUND 1220 AM EDT...
  EATON AROUND 1225 AM EDT...
  CONVERSE AROUND 1230 AM EDT...

THIS INCLUDES INTERSTATE 69 BETWEEN MILE MARKERS 39 AND 52.

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.

&&

LAT...LON 4031 8521 4009 8586 4034 8586 4040 8569
      4040 8522 4039 8521 4038 8521
TIME...MOT...LOC 0401Z 246DEG 45KT 4027 8575
WIND...HAIL 60MPH 1.00IN

$$
JH

2 follow-up statements

633 
WWUS53 KIND 230419
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1219 AM EDT SAT APR 23 2011

INC095-230428-
/O.CAN.KIND.SV.W.0079.000000T0000Z-110423T0430Z/
MADISON-
1219 AM EDT SAT APR 23 2011

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

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.  AROUND 1210 AM EDT QUARTER TO HALF DOLLAR SIZE HAIL WAS 
REPORTED IN SUMMITVILLE IN NORTHEAST MADISON COUNTY.

&&

LAT...LON 4031 8521 4019 8556 4030 8558 4039 8557
      4040 8529 4040 8522 4038 8521
TIME...MOT...LOC 0418Z 257DEG 60KT 4035 8540

$$

INC035-230430-
/O.CON.KIND.SV.W.0079.000000T0000Z-110423T0430Z/
DELAWARE-
1219 AM EDT SAT APR 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
DELAWARE COUNTY 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 8 MILES
SOUTHWEST OF HARTFORD CITY...MOVING EAST AT 70 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  CONVERSE AROUND 1225 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.

&&

LAT...LON 4031 8521 4019 8556 4030 8558 4039 8557
      4040 8529 4040 8522 4038 8521
TIME...MOT...LOC 0418Z 257DEG 60KT 4035 8540
WIND...HAIL 60MPH 1.00IN

$$
JH

468 
WWUS53 KIND 230429
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1229 AM EDT SAT APR 23 2011

INC035-230439-
/O.EXP.KIND.SV.W.0079.000000T0000Z-110423T0430Z/
DELAWARE-
1229 AM EDT SAT APR 23 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN DELAWARE COUNTY WILL
EXPIRE AT 1230 AM EDT/1130 PM CDT/...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.  HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM 
IN EXTREME NORTHEAST DELAWARE COUNTY.

&&

LAT...LON 4031 8521 4019 8556 4030 8558 4039 8557
      4040 8529 4040 8522 4038 8521
TIME...MOT...LOC 0429Z 257DEG 60KT 4039 8516

$$
JH

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 22, 8:37 PM EDT	River Flood Warning	IND	Shelby	7 days
Apr 22, 8:37 PM EDT	River Flood Warning	IND	Clay, Greene	8 days
Apr 22, 11:00 PM EDT	Special Weather Statement	IND	Daviess	30 min
Apr 22, 11:33 PM EDT	Special Weather Statement	IND	Brown, Monroe	27 min
Apr 22, 11:37 PM EDT	Severe Thunderstorm Warning	IND	Brown, Johnson, Monroe	23 min
Apr 23, 12:17 AM EDT	Areal Flood Warning	IND	Daviess, Greene, Knox, Martin, Sullivan	6 hr
Apr 23, 12:37 AM EDT	Severe Thunderstorm Warning	IND	Brown, Greene, Lawrence, Monroe	23 min
Apr 23, 12:48 AM EDT	Severe Thunderstorm Warning	IND	Delaware, Henry, Randolph	27 min
Apr 23, 12:52 AM EDT	Tornado Warning	IND	Brown, Jackson, Lawrence, Monroe	23 min
Apr 23, 1:14 AM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Brown, Decatur, Jackson, Jennings	31 min
Apr 23, 1:33 AM EDT	Tornado Warning	IND	Bartholomew, Jackson, Jennings	42 min
Apr 23, 1:47 AM EDT	Severe Thunderstorm Warning	IND	Decatur	28 min
Apr 23, 6:48 AM EDT	Areal Flood Warning	IND	Jackson, Jennings	6 hr
Apr 23, 11:25 AM EDT	River Flood Warning	IND	Carroll, Tippecanoe, White	6 hr
Apr 23, 12:22 PM EDT	Areal Flood Warning	IND	Daviess, Knox, Lawrence, Martin	6 hr
Apr 23, 1:08 PM EDT	Areal Flood Warning	IND	Jackson, Jennings	6 hr
Apr 23, 1:27 PM EDT	Flash Flood Watch	IND	Bartholomew, Boone, Brown, Carroll, Clay, Clinton and 33 more	5 days

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.