Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 49, NWS Indianapolis, IN

April 9, 2011Daviess County, Knox County, Sullivan County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 9, 2011, 9:06 AM EDT for Daviess County, Knox County, Sullivan County, Indiana. It was in force for 39 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 9, 2011, 9:06 AM EDT (13:06 UTC)
Expired: Apr 9, 2011, 9:45 AM EDT
In force: 39 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Daviess County, IN, Knox County, IN, Sullivan County, IN

The radar

The Evansville,IN radar (KVWX), 50 km from the middle of the area, began a volume at 13:07 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, 9:51 AM EDT	TSTM WND DMG	Monroe City, IN	TREE DOWN ON HOUSE IN BLUE JEANS CENTER.

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

Lincoln, IL (KILX), launched 12:00Z, 1.1 hours before the alert went out and 189 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: 1370 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 151 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.

438 
WUUS53 KIND 091306
SVRIND
INC027-083-153-091345-
/O.NEW.KIND.SV.W.0049.110409T1306Z-110409T1345Z/

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

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL DAVIESS COUNTY IN SOUTHWEST INDIANA...
  KNOX COUNTY IN SOUTHWEST INDIANA...
  SOUTH CENTRAL SULLIVAN COUNTY IN SOUTHWEST INDIANA...

* UNTIL 945 AM EDT/845 AM CDT/

* AT 806 AM CDT...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 FLAT ROCK TO 10 MILES SOUTHWEST
  OF MOUNT CARMEL...AND MOVING NORTHEAST AT 45 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  OAKTOWN AND CARLISLE AROUND 925 AM EDT...
  VINCENNES UNIVERSITY AND VINCENNES AROUND 930 AM EDT...
  DECKER AND BRUCEVILLE AROUND 935 AM EDT...
  FREELANDVILLE AND BICKNELL AROUND 940 AM EDT...
  MONROE CITY...EDWARDSPORT AND WHEATLAND AROUND 945 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 3851 8766 3855 8768 3860 8763 3864 8763
      3874 8751 3886 8756 3896 8754 3899 8759
      3905 8758 3895 8733 3892 8735 3882 8723
      3853 8726 3851 8731 3854 8737 3851 8738
      3853 8740 3853 8748 3849 8750 3846 8774
TIME...MOT...LOC 1306Z 246DEG 40KT 3890 8766 3834 8793
WIND...HAIL 60MPH 1.00IN

$$

PUMA

2 follow-up statements

245 
WWUS53 KIND 091321
SVSIND

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

INC027-083-153-091345-
/O.CON.KIND.SV.W.0049.000000T0000Z-110409T1345Z/
DAVIESS-KNOX-SULLIVAN-
921 AM EDT SAT APR 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
DAVIESS...KNOX AND SOUTH CENTRAL SULLIVAN COUNTIES UNTIL 945 AM
EDT/845 AM CDT/...

AT 919 AM EDT/819 AM CDT/...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 9 MILES NORTHEAST OF
RUSSELLVILLE TO 5 MILES WEST OF PRINCETON...MOVING EAST AT 45 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  BICKNELL AROUND 930 AM EDT...
  WHEATLAND...MONROE CITY AND EDWARDSPORT AROUND 935 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 3851 8766 3855 8768 3860 8763 3864 8763
      3874 8751 3886 8756 3896 8754 3899 8759
      3905 8758 3895 8733 3892 8735 3882 8723
      3853 8726 3851 8731 3854 8737 3851 8738
      3853 8740 3853 8748 3849 8750 3846 8774
TIME...MOT...LOC 1321Z 254DEG 39KT 3890 8736 3835 8764
WIND...HAIL 60MPH 1.00IN

$$

PUMA

474 
WWUS53 KIND 091334
SVSIND

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

INC027-083-153-091345-
/O.CON.KIND.SV.W.0049.000000T0000Z-110409T1345Z/
DAVIESS-KNOX-SULLIVAN-
934 AM EDT SAT APR 9 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
DAVIESS...CENTRAL KNOX AND SOUTH CENTRAL SULLIVAN COUNTIES UNTIL 945
AM EDT...

AT 928 AM EDT/828 AM CDT/...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 10 MILES SOUTHWEST OF LINTON
TO PRINCETON...MOVING EAST AT 45 MPH.

SEVERE THUNDERSTORMS WILL AFFECT MAINLY RURAL AREAS OF CENTRAL
KNOX...SOUTH CENTRAL SULLIVAN AND WEST CENTRAL DAVIESS COUNTIES.

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 3849 8750 3898 8747 3895 8733 3892 8735
      3882 8723 3853 8726 3851 8731 3854 8737
      3851 8738 3853 8740 3853 8748
TIME...MOT...LOC 1333Z 254DEG 39KT 3893 8720 3838 8748
WIND...HAIL 60MPH 1.00IN

$$

PUMA

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, 9:09 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, 10:21 AM EDT	Severe Thunderstorm Warning	IND	Jackson, Lawrence	39 min
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.