Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 78, NWS Indianapolis, IN

April 22, 2011Brown County, Johnson County, Monroe County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 22, 2011, 11:37 PM EDT for Brown County, Johnson County, Monroe County, Indiana. It was in force for 23 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: Apr 22, 2011, 11:37 PM EDT (03:37 UTC)
Expired: Apr 23, 2011, 12:00 AM EDT
In force: 23 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Brown County, IN, Johnson County, IN, Monroe County, IN

The radar

The Indianapolis radar (KIND), 48 km from the middle of the area, began a volume at 03:39 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 nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 3.6 hours before the alert went out and 213 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: 342 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 492 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 351 m²/s²
0-3 km storm-relative helicity: 346 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

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

758 
WUUS53 KIND 230337
SVRIND
INC013-081-105-230400-
/O.NEW.KIND.SV.W.0078.110423T0337Z-110423T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1137 PM EDT FRI APR 22 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BROWN COUNTY IN SOUTH CENTRAL INDIANA...
  SOUTHWESTERN JOHNSON COUNTY IN CENTRAL INDIANA...
  MONROE COUNTY IN SOUTH CENTRAL INDIANA...

* UNTIL MIDNIGHT EDT

* AT 1134 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR BLOOMINGTON...AND MOVING EAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  UNIONVILLE AND WOODVILLE HILLS AROUND 1145 PM EDT...
  LAKE LEMON AND YELLOWWOOD LAKE AROUND 1150 PM EDT...
  HELMSBURG...BEANBLOSSOM AND NASHVILLE AROUND 1155 PM EDT...
  SPEARSVILLE AND PEOGA AROUND MIDNIGHT 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.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 3925 8669 3933 8639 3933 8626 3938 8626
      3944 8609 3920 8610 3906 8660
TIME...MOT...LOC 0337Z 251DEG 40KT 3920 8653
WIND...HAIL <50MPH 1.00IN

$$
JH

1 follow-up statement

894 
WWUS53 KIND 230350
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1150 PM EDT FRI APR 22 2011

INC105-230400-
/O.CAN.KIND.SV.W.0078.000000T0000Z-110423T0400Z/
MONROE-
1150 PM EDT FRI APR 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR MONROE COUNTY IS CANCELLED...

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

LAT...LON 3930 8638 3933 8639 3933 8626 3938 8626
      3944 8609 3920 8610 3912 8638
TIME...MOT...LOC 0350Z 251DEG 40KT 3925 8630

$$

INC013-081-230400-
/O.CON.KIND.SV.W.0078.000000T0000Z-110423T0400Z/
BROWN-JOHNSON-
1150 PM EDT FRI APR 22 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN BROWN
AND SOUTHWESTERN JOHNSON COUNTIES UNTIL MIDNIGHT EDT...

AT 1148 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 5 MILES NORTHWEST OF NASHVILLE...OR 12 MILES
NORTHEAST OF BLOOMINGTON...MOVING EAST AT 45 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  NASHVILLE AND BEANBLOSSOM AROUND 1155 PM EDT...
  SPEARSVILLE...PEOGA...PRINCES LAKES AND GNAW BONE AROUND MIDNIGHT
  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.

PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS IF YOU ARE IN
THE PATH OF THIS STORM. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 3930 8638 3933 8639 3933 8626 3938 8626
      3944 8609 3920 8610 3912 8638
TIME...MOT...LOC 0350Z 251DEG 40KT 3925 8630
WIND...HAIL <50MPH 1.00IN

$$
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 23, 12:01 AM EDT	Severe Thunderstorm Warning	IND	Delaware, Madison	29 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.