Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 89, NWS Indianapolis, IN

April 27, 2011Decatur County, Jennings County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 27, 2011, 1:10 AM EDT for Decatur County, Jennings County, Indiana. It was in force for 50 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 27, 2011, 1:10 AM EDT (05:10 UTC)
Expired: Apr 27, 2011, 2:00 AM EDT
In force: 50 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Decatur County, IN, Jennings County, IN

The radar

The Indianapolis radar (KIND), 102 km from the middle of the area, began a volume at 05:12 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 5.2 hours before the alert went out and 158 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: 781 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 622 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 255 m²/s²
0-3 km storm-relative helicity: 275 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

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

192 
WUUS53 KIND 270510
SVRIND
INC031-079-270600-
/O.NEW.KIND.SV.W.0089.110427T0510Z-110427T0600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
110 AM EDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN DECATUR COUNTY IN CENTRAL INDIANA...
  JENNINGS COUNTY IN SOUTHEAST INDIANA...

* UNTIL 200 AM EDT

* AT 107 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
  SOUTH OF VERNON...OR 14 MILES SOUTHEAST OF SEYMOUR...AND MOVING
  NORTH AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  VERNON AROUND 120 AM EDT...
  NORTH VERNON AND COUNTRY SQUIRE LAKES AROUND 125 AM EDT...
  BUTLERVILLE AROUND 130 AM EDT...
  NEBRASKA AROUND 135 AM EDT...
  WESTPORT AROUND 145 AM EDT...
  LETTS AROUND 150 AM EDT...
  MILLHOUSEN AROUND 155 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 3919 8545 3900 8545 3891 8549 3891 8554
      3889 8555 3888 8558 3885 8559 3885 8562
      3883 8562 3881 8565 3881 8569 3883 8578
      3927 8566 3927 8531 3926 8531
TIME...MOT...LOC 0511Z 200DEG 29KT 3890 8563
WIND...HAIL 60MPH 1.00IN

$$

KOCH

2 follow-up statements

265 
WWUS53 KIND 270528
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
128 AM EDT WED APR 27 2011

INC031-079-270600-
/O.CON.KIND.SV.W.0089.000000T0000Z-110427T0600Z/
DECATUR-JENNINGS-
128 AM EDT WED APR 27 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR JENNINGS AND
SOUTHERN DECATUR COUNTIES UNTIL 200 AM EDT...

AT 125 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 NEAR
VERNON...OR 17 MILES EAST OF SEYMOUR...MOVING NORTH AT 35 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  NEBRASKA AROUND 135 AM EDT...
  WESTPORT AROUND 145 AM EDT...
  LETTS AROUND 150 AM EDT...
  MILLHOUSEN AROUND 155 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 3919 8545 3900 8545 3891 8549 3891 8554
      3889 8555 3888 8558 3885 8559 3885 8562
      3883 8562 3881 8565 3881 8569 3883 8578
      3927 8566 3927 8531 3926 8531
TIME...MOT...LOC 0528Z 200DEG 29KT 3903 8557
WIND...HAIL 60MPH 1.00IN

$$

KOCH

839 
WWUS53 KIND 270558
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
158 AM EDT WED APR 27 2011

INC031-079-270608-
/O.EXP.KIND.SV.W.0089.000000T0000Z-110427T0600Z/
DECATUR-JENNINGS-
158 AM EDT WED APR 27 2011

...THE SEVERE THUNDERSTORM WARNING FOR JENNINGS AND SOUTHERN DECATUR
COUNTIES WILL EXPIRE AT 200 AM EDT/100 AM CDT/...

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

LAT...LON 3919 8545 3900 8545 3891 8549 3891 8554
      3889 8555 3888 8558 3885 8559 3885 8562
      3883 8562 3881 8565 3881 8569 3883 8578
      3927 8566 3927 8531 3926 8531
TIME...MOT...LOC 0558Z 200DEG 29KT 3926 8546

$$

KOCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 8:26 PM EDT	Severe Thunderstorm Warning	IND	Carroll	34 min
Apr 26, 9:21 PM EDT	Severe Thunderstorm Warning	IND	Fountain, Montgomery, Parke	39 min
Apr 26, 9:34 PM EDT	Severe Thunderstorm Warning	IND	Carroll, Clinton, Howard, Tippecanoe	41 min
Apr 26, 11:35 PM EDT	Flash Flood Warning	IND	Daviess, Greene, Knox, Lawrence, Martin, Monroe and 1 more	5 hr
Apr 26, 11:42 PM EDT	Severe Thunderstorm Warning	IND	Daviess, Greene, Knox, Sullivan	24 min
Apr 27, 12:48 AM EDT	Flash Flood Warning	IND	Bartholomew, Brown, Decatur, Jackson, Jennings	5 hr
Apr 27, 2:06 AM EDT	Special Weather Statement	IND	Clinton, Howard, Tipton	39 min
Apr 27, 5:32 AM EDT	Areal Flood Warning	IND	Bartholomew, Jackson, Jennings	30 hr
Apr 27, 7:04 PM EDT	Severe Thunderstorm Warning	IND	Boone, Hendricks, Marion	41 min
Apr 27, 7:05 PM EDT	Tornado Warning	IND	Boone, Hendricks, Marion	40 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.