Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 82, NWS Indianapolis, IN

April 23, 20115 counties in Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 23, 2011, 1:14 AM EDT for 5 counties in Indiana. It was in force for 31 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, 1:14 AM EDT (05:14 UTC)
Expired
Apr 23, 2011, 1:45 AM EDT
In force
31 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Bartholomew County, IN, Brown County, IN, Decatur County, IN, Jackson County, IN, Jennings County, IN

The radar

The Indianapolis radar (KIND), 82 km from the middle of the area, began a volume at 05:16 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

TimeReportWhereRemark
Apr 23, 1:40 AM EDTTSTM WND DMG1 N Seymour, INTREE UPROOTED AND PORTION OF A ROOF REMOVED AND ROOM DAMAGED ON MURRAY HILL DRIVE BEHIND REDDING ELEMENTARY. RELAYED BY BROADCAST MEDIA. TIME ESTIMATED BASED ON RADAR.

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, 5.2 hours before the alert went out and 193 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 00:00Z on 2011-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 2011-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 147 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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.

371 
WUUS53 KIND 230514
SVRIND
INC005-013-031-071-079-230545-
/O.NEW.KIND.SV.W.0082.110423T0514Z-110423T0545Z/

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

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN BARTHOLOMEW COUNTY IN CENTRAL INDIANA...
  SOUTHEASTERN BROWN COUNTY IN SOUTH CENTRAL INDIANA...
  EXTREME SOUTHWESTERN DECATUR COUNTY IN CENTRAL INDIANA...
  NORTHERN JACKSON COUNTY IN SOUTH CENTRAL INDIANA...
  JENNINGS COUNTY IN SOUTHEAST INDIANA...

* UNTIL 145 AM EDT

* AT 112 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 11
  MILES SOUTH OF NASHVILLE...OR 18 MILES WEST OF SEYMOUR...AND MOVING
  EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WAYMANSVILLE AROUND 120 AM EDT...
  CORTLAND AROUND 125 AM EDT...
  JONESVILLE AND SEYMOUR AROUND 130 AM EDT...
  AZALIA AND ELIZABETHTOWN AROUND 135 AM EDT...
  SCIPIO...HAYDEN AND GRAMMER AROUND 140 AM EDT...
  COUNTRY SQUIRE LAKES...NORTH VERNON AND VERNON AROUND 145 AM EDT...

THIS INCLUDES INTERSTATE 65 BETWEEN MILE MARKERS 46 AND 66.

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.

INTENSE SQUALL LINES CAN OCCASIONALLY PRODUCE BRIEF TORNADOES IN
ADDITION TO WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT
IMMEDIATELY LIKELY...FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON
THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THIS STORM HAS THE
POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

&&

LAT...LON 3895 8629 3900 8630 3918 8627 3917 8545
      3892 8545 3889 8576
TIME...MOT...LOC 0514Z 271DEG 45KT 3904 8617
WIND...HAIL 70MPH 1.00IN

$$
JH
1 follow-up statement
008 
WWUS53 KIND 230528
SVSIND

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

INC013-230538-
/O.CAN.KIND.SV.W.0082.000000T0000Z-110423T0545Z/
BROWN-
128 AM EDT SAT APR 23 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BROWN COUNTY IS
CANCELLED...

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

LAT...LON 3892 8605 3899 8607 3918 8609 3917 8545
      3892 8545 3889 8576
TIME...MOT...LOC 0528Z 271DEG 37KT 3905 8600

$$

INC005-031-071-079-230545-
/O.CON.KIND.SV.W.0082.000000T0000Z-110423T0545Z/
BARTHOLOMEW-DECATUR-JACKSON-JENNINGS-
128 AM EDT SAT APR 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
JACKSON...JENNINGS...SOUTHERN BARTHOLOMEW AND SOUTHWESTERN DECATUR
COUNTIES UNTIL 145 AM EDT...

AT 126 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 10
MILES NORTHWEST OF SEYMOUR...MOVING EAST AT 40 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  JONESVILLE AND SEYMOUR AROUND 135 AM EDT...
  AZALIA AND ELIZABETHTOWN AROUND 140 AM EDT...
  SCIPIO...HAYDEN AND COUNTRY SQUIRE LAKES AROUND 145 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.

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS 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.

&&

LAT...LON 3892 8605 3899 8607 3918 8609 3917 8545
      3892 8545 3889 8576
TIME...MOT...LOC 0528Z 271DEG 37KT 3905 8600
WIND...HAIL 70MPH 1.00IN

$$
JH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 22, 8:37 PM EDTRiver Flood WarningINDShelby7 days
Apr 22, 8:37 PM EDTRiver Flood WarningINDClay, Greene8 days
Apr 22, 11:00 PM EDTSpecial Weather StatementINDDaviess30 min
Apr 22, 11:33 PM EDTSpecial Weather StatementINDBrown, Monroe27 min
Apr 22, 11:37 PM EDTSevere Thunderstorm WarningINDBrown, Johnson, Monroe23 min
Apr 23, 12:01 AM EDTSevere Thunderstorm WarningINDDelaware, Madison29 min
Apr 23, 12:17 AM EDTAreal Flood WarningINDDaviess, Greene, Knox, Martin, Sullivan6 hr
Apr 23, 12:37 AM EDTSevere Thunderstorm WarningINDBrown, Greene, Lawrence, Monroe23 min
Apr 23, 12:48 AM EDTSevere Thunderstorm WarningINDDelaware, Henry, Randolph27 min
Apr 23, 12:52 AM EDTTornado WarningINDBrown, Jackson, Lawrence, Monroe23 min
Apr 23, 1:33 AM EDTTornado WarningINDBartholomew, Jackson, Jennings42 min
Apr 23, 1:47 AM EDTSevere Thunderstorm WarningINDDecatur28 min
Apr 23, 6:48 AM EDTAreal Flood WarningINDJackson, Jennings6 hr
Apr 23, 11:25 AM EDTRiver Flood WarningINDCarroll, Tippecanoe, White6 hr
Apr 23, 12:22 PM EDTAreal Flood WarningINDDaviess, Knox, Lawrence, Martin6 hr
Apr 23, 1:08 PM EDTAreal Flood WarningINDJackson, Jennings6 hr
Apr 23, 1:27 PM EDTFlash Flood WatchINDBartholomew, Boone, Brown, Carroll, Clay, Clinton and 33 more5 days

Nearby

Severe Thunderstorm Warnings in Indiana, 2011Every 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.