Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 65, NWS Indianapolis, IN

April 19, 20114 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 19, 2011, 10:45 PM EDT for 4 counties in Indiana. It was in force for 45 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 19, 2011, 10:45 PM EDT (02:45 UTC)
Expired: Apr 19, 2011, 11:30 PM EDT
In force: 45 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Delaware County, IN, Henry County, IN, Madison County, IN, Randolph County, IN

The radar

The Indianapolis radar (KIND), 104 km from the middle of the area, began a volume at 02:45 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 19, 11:02 PM EDT	TSTM WND GST 57	Muncie, 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
Apr 19, 7:46 PM EDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.8 hours before the alert went out and 144 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: 1686 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 1003 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 387 m²/s²
0-3 km storm-relative helicity: 474 m²/s²
Significant tornado parameter: 4.3
Supercell composite: 18.7

Open this sounding in Storm Lab

The text

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

555 
WUUS53 KIND 200245
SVRIND
INC035-065-095-135-200330-
/O.NEW.KIND.SV.W.0065.110420T0245Z-110420T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1045 PM EDT TUE APR 19 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

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

* UNTIL 1130 PM EDT

* AT 1045 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM FAIRMOUNT TO 7 MILES EAST OF
  FISHERS...AND MOVING EAST AT 50 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  DALEVILLE AND CHESTERFIELD AROUND 1055 PM EDT...
  BALL STATE UNIVERSITY...YORKTOWN...MIDDLETOWN AND MARKLEVILLE
  AROUND 1100 PM EDT...
  CONVERSE AND MUNCIE AROUND 1105 PM EDT...
  PRAIRIE CREEK RESERVOIR...SULPHUR SPRINGS...SPRINGPORT AND SELMA
  AROUND 1110 PM EDT...
  SUMMIT LAKE STATE PARK AND PARKER CITY AROUND 1115 PM EDT...
  RIDGEVILLE AROUND 1120 PM EDT...

THIS INCLUDES INTERSTATE 69 BETWEEN MILE MARKERS 15 AND 52.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

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 4001 8482 4001 8520 3994 8520 3996 8586
      4040 8570 4040 8522 4032 8520 4032 8480
TIME...MOT...LOC 0246Z 275DEG 45KT 4038 8556 3994 8587
WIND...HAIL 60MPH 1.00IN

$$

50

1 follow-up statement

136 
WWUS53 KIND 200316
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1116 PM EDT TUE APR 19 2011

INC035-065-095-135-200330-
/O.CON.KIND.SV.W.0065.000000T0000Z-110420T0330Z/
DELAWARE-HENRY-MADISON-RANDOLPH-
1116 PM EDT TUE APR 19 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
HENRY...RANDOLPH...DELAWARE AND SOUTHEASTERN MADISON COUNTIES UNTIL
1130 PM EDT...

AT 1112 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 REDKEY TO 7 MILES WEST OF NEW CASTLE...MOVING EAST AT 50 MPH.
PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

SEVERE THUNDERSTORMS WILL BE NEAR...
  RIDGEVILLE...MODOC AND LOSANTVILLE AROUND 1125 PM EDT...
  WINCHESTER...SARATOGA AND SALEM AROUND 1130 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

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 4001 8482 4001 8520 3994 8520 3996 8570
      4038 8557 4040 8522 4032 8520 4032 8480
TIME...MOT...LOC 0316Z 275DEG 45KT 4035 8511 3991 8542
WIND...HAIL 60MPH 0.75IN

$$

50

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 8:54 PM EDT	Tornado Warning	IND	Fountain, Parke, Vermillion, Warren	51 min
Apr 19, 9:16 PM EDT	Tornado Warning	IND	Clay, Owen, Putnam, Vigo	59 min
Apr 19, 9:31 PM EDT	Tornado Warning	IND	Boone, Carroll, Clinton, Hendricks, Montgomery, Putnam and 1 more	44 min
Apr 19, 9:40 PM EDT	Severe Thunderstorm Warning	IND	Carroll	50 min
Apr 19, 9:55 PM EDT	Areal Flood Warning	IND	Clay, Parke, Vigo	15 hr
Apr 19, 10:07 PM EDT	Tornado Warning	IND	Boone, Clinton, Hamilton, Howard, Madison, Tipton	38 min
Apr 19, 10:13 PM EDT	Severe Thunderstorm Warning	IND	Clay, Owen, Putnam, Vigo	47 min
Apr 19, 10:15 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Hendricks, Marion, Shelby	45 min
Apr 19, 10:34 PM EDT	Flash Flood Warning	IND	Clay, Vigo	6 hr
Apr 19, 10:53 PM EDT	Severe Thunderstorm Warning	IND	Clay, Morgan, Owen, Putnam, Sullivan, Vigo	37 min
Apr 19, 10:59 PM EDT	Severe Thunderstorm Warning	IND	Clay, Daviess, Greene, Knox, Martin, Owen and 1 more	61 min
Apr 19, 11:00 PM EDT	Severe Thunderstorm Warning	IND	Hancock, Henry, Rush, Shelby	45 min
Apr 19, 11:01 PM EDT	Flash Flood Warning	IND	Hendricks, Morgan, Putnam	6 hr
Apr 19, 11:30 PM EDT	Severe Thunderstorm Warning	IND	Clay, Morgan, Owen, Putnam	45 min
Apr 19, 11:30 PM EDT	Severe Thunderstorm Warning	IND	Delaware, Henry, Randolph	45 min
Apr 19, 11:40 PM EDT	Flash Flood Warning	IND	Hamilton, Hancock, Hendricks, Johnson, Madison, Marion and 1 more	6 hr
Apr 19, 11:44 PM EDT	Severe Thunderstorm Warning	IND	Brown, Greene, Jackson, Lawrence, Martin, Monroe and 2 more	31 min
Apr 19, 11:54 PM EDT	Severe Thunderstorm Warning	IND	Hendricks, Marion	31 min
Apr 20, 12:13 AM EDT	Severe Thunderstorm Warning	IND	Johnson, Shelby	34 min
Apr 20, 12:16 AM EDT	Severe Thunderstorm Warning	IND	Bartholomew, Brown, Decatur, Jackson, Jennings	44 min
Apr 20, 12:21 AM EDT	Flash Flood Warning	IND	Bartholomew, Brown, Jackson, Jennings, Johnson, Lawrence and 3 more	4 hr
Apr 20, 12:25 AM EDT	Severe Thunderstorm Warning	IND	Decatur, Rush	40 min
Apr 20, 7:31 AM EDT	Areal Flood Warning	IND	Clay, Parke, Vigo	24 hr

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.