Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 53, NWS Indianapolis, IN

April 9, 2011Jackson County, Lawrence County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 9, 2011, 10:21 AM EDT for Jackson County, Lawrence County, Indiana. It was in force for 39 min. 3 reports 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 9, 2011, 10:21 AM EDT (14:21 UTC)
Expired: Apr 9, 2011, 11:00 AM EDT
In force: 39 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Jackson County, IN, Lawrence County, IN

The radar

The Louisville radar (KLVX), 96 km from the middle of the area, began a volume at 14:23 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 9, 10:27 AM EDT	HAIL 0.5	Bedford, IN
Apr 9, 10:44 AM EDT	TSTM WND GST 44	Mitchell, IN	REPORT FROM NORTHERN MITCHELL.
Apr 9, 10:44 AM EDT	TSTM WND GST 60	Mitchell, IN	REPORT FROM NORTHERN MITCHELL.

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 9, 8:25 AM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 2.4 hours before the alert went out and 227 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: 589 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 257 m²/s²
0-3 km storm-relative helicity: 257 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

027 
WUUS53 KIND 091421
SVRIND
INC071-093-091500-
/O.NEW.KIND.SV.W.0053.110409T1421Z-110409T1500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1021 AM EDT SAT APR 9 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN JACKSON COUNTY IN SOUTH CENTRAL INDIANA...
  LAWRENCE COUNTY IN SOUTH CENTRAL INDIANA...

* UNTIL 1100 AM EDT

* AT 1019 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 10
  MILES EAST OF SHOALS...OR 13 MILES SOUTHWEST OF BEDFORD...AND
  MOVING EAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MITCHELL AND BEDFORD AROUND 1030 AM EDT...
  SPRING MILL STATE PARK...TUNNELTON AND HELTONVILLE AROUND 1035 AM
  EDT...
  MEDORA AND PLEASANT VIEW AROUND 1050 AM EDT...
  VALLONIA AROUND 1055 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 3888 8670 3898 8602 3875 8599 3876 8605
      3878 8609 3877 8617 3878 8621 3876 8629
      3869 8632 3868 8669
TIME...MOT...LOC 1421Z 267DEG 37KT 3869 8658
WIND...HAIL 60MPH 1.00IN

$$

AB/JP

3 follow-up statements

518 
WWUS53 KIND 091435
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1035 AM EDT SAT APR 9 2011

INC071-093-091500-
/O.CON.KIND.SV.W.0053.000000T0000Z-110409T1500Z/
JACKSON-LAWRENCE-
1035 AM EDT SAT APR 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
LAWRENCE AND WESTERN JACKSON COUNTIES UNTIL 1100 AM EDT...

AT 1033 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 6 MILES
SOUTHEAST OF BEDFORD...MOVING EAST AT 45 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  MEDORA AND PLEASANT VIEW AROUND 1050 AM EDT...
  VALLONIA AROUND 1055 AM EDT...
  BROWNSTOWN AROUND 1100 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 3869 8650 3890 8651 3898 8602 3875 8599
      3876 8605 3878 8609 3877 8617 3878 8621
      3876 8629 3869 8632
TIME...MOT...LOC 1435Z 267DEG 39KT 3880 8640
WIND...HAIL 60MPH 1.00IN

$$

AB/JP

971 
WWUS53 KIND 091448
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1048 AM EDT SAT APR 9 2011

INC093-091458-
/O.CAN.KIND.SV.W.0053.000000T0000Z-110409T1500Z/
LAWRENCE-
1048 AM EDT SAT APR 9 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN LAWRENCE COUNTY IS
CANCELLED...

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

LAT...LON 3876 8605 3878 8609 3877 8617 3878 8621
      3877 8627 3877 8628 3894 8629 3898 8602
      3875 8599
TIME...MOT...LOC 1448Z 264DEG 41KT 3883 8610

$$

INC071-091500-
/O.CON.KIND.SV.W.0053.000000T0000Z-110409T1500Z/
JACKSON-
1048 AM EDT SAT APR 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN
JACKSON COUNTY UNTIL 1100 AM EDT...

AT 1047 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
BROWNSTOWN...OR 15 MILES SOUTHWEST OF SEYMOUR...MOVING EAST AT 45
MPH.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF WESTERN
JACKSON COUNTY.

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 3876 8605 3878 8609 3877 8617 3878 8621
      3877 8627 3877 8628 3894 8629 3898 8602
      3875 8599
TIME...MOT...LOC 1448Z 264DEG 41KT 3883 8610
WIND...HAIL 60MPH 1.00IN

$$

AB/JP

115 
WWUS53 KIND 091456
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
1056 AM EDT SAT APR 9 2011

INC071-091506-
/O.EXP.KIND.SV.W.0053.000000T0000Z-110409T1500Z/
JACKSON-
1056 AM EDT SAT APR 9 2011

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN JACKSON COUNTY WILL
EXPIRE AT 1100 AM EDT/1000 AM CDT/...

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

LAT...LON 3876 8605 3878 8609 3877 8617 3878 8621
      3877 8627 3877 8628 3894 8629 3898 8602
      3875 8599
TIME...MOT...LOC 1456Z 264DEG 41KT 3884 8598

$$

AB/JP

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 8:00 AM EDT	Severe Thunderstorm Warning	IND	Knox, Sullivan	45 min
Apr 9, 8:27 AM EDT	Severe Thunderstorm Warning	IND	Clay, Greene, Sullivan, Vigo	48 min
Apr 9, 9:03 AM EDT	Severe Thunderstorm Warning	IND	Greene, Knox, Sullivan	27 min
Apr 9, 9:06 AM EDT	Severe Thunderstorm Warning	IND	Daviess, Knox, Sullivan	39 min
Apr 9, 9:09 AM EDT	Severe Thunderstorm Warning	IND	Clay, Owen, Putnam, Vigo	51 min
Apr 9, 9:22 AM EDT	Severe Thunderstorm Warning	IND	Greene, Monroe, Owen	38 min
Apr 9, 9:31 AM EDT	Severe Thunderstorm Warning	IND	Daviess, Greene, Knox, Sullivan	44 min
Apr 9, 9:47 AM EDT	Flash Flood Warning	IND	Greene, Owen, Sullivan, Vigo	5 hr
Apr 9, 10:10 AM EDT	Flash Flood Warning	IND	Brown, Daviess, Lawrence, Martin, Monroe	4 hr
Apr 9, 12:00 PM EDT	River Flood Warning	IND	Lawrence, Martin	8 days
Apr 9, 12:00 PM EDT	River Flood Warning	IND	Daviess, Gibson, Knox, Pike	37 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.