Alert archive / Indiana / Tornado Warnings in 2011

Tornado Warning 30, NWS Indianapolis, IN

May 7, 2011Sullivan County, Vigo County, Indiana

NWS Indianapolis, IN issued this tornado warning at May 7, 2011, 9:10 PM EDT for Sullivan County, Vigo County, Indiana. It was in force for 20 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
May 7, 2011, 9:10 PM EDT (01:10 UTC)
Expired
May 7, 2011, 9:30 PM EDT
In force
20 min
Issued by
NWS Indianapolis, IN
Area
Storm-based polygon

Counties Sullivan County, IN, Vigo County, IN

The radar

The Indianapolis radar (KIND), 111 km from the middle of the area, began a volume at 01:13 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 7, 3:59 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.2 hours before the alert went out and 130 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, Lincoln, IL at 00:00Z on 2011-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2011-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.1939587897Sfc1 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
3086 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
113 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.

740 
WFUS53 KIND 080110
TORIND
INC153-167-080145-
/O.NEW.KIND.TO.W.0030.110508T0110Z-110508T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
910 PM EDT SAT MAY 7 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL SULLIVAN COUNTY IN SOUTHWEST INDIANA...
  SOUTHERN VIGO COUNTY IN WEST CENTRAL INDIANA...

* UNTIL 945 PM EDT/845 PM CDT/

* AT 906 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 9 MILES SOUTHEAST OF DENNISON...OR 9 MILES
  SOUTHWEST OF TERRE HAUTE...AND MOVING SOUTHEAST AT 30 MPH.

* THIS DANGEROUS STORM WILL BE NEAR...
  PIMENTO AROUND 920 PM EDT...
  FAIRBANKS AROUND 925 PM EDT...

THIS INCLUDES INTERSTATE 70 BETWEEN MILE MARKERS 0 AND 8.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 3935 8759 3936 8754 3944 8754 3948 8747
      3935 8725 3934 8726 3919 8756 3932 8761
TIME...MOT...LOC 0110Z 333DEG 24KT 3934 8747

$$

77/TDUD
1 follow-up statement
771 
WWUS53 KIND 080130
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
930 PM EDT SAT MAY 7 2011

INC153-167-080138-
/O.CAN.KIND.TO.W.0030.000000T0000Z-110508T0145Z/
SULLIVAN-VIGO-
930 PM EDT SAT MAY 7 2011

...THE TORNADO WARNING FOR NORTHWESTERN SULLIVAN AND SOUTHERN VIGO 
COUNTIES HAS BEEN REPLACED BY A SEVERE THUNDERSTORM WARNING...

THE STORM HAS WEAKENED.



LAT...LON 3935 8759 3936 8754 3944 8754 3948 8747
      3935 8725 3934 8726 3919 8756 3932 8761
TIME...MOT...LOC 0128Z 333DEG 24KT 3923 8740

$$

77/TDUD

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 8:15 PM EDTSevere Thunderstorm WarningINDClay, Parke, Putnam, Vigo45 min
May 7, 8:23 PM EDTTornado WarningINDClay, Sullivan, Vigo52 min
May 7, 8:33 PM EDTAreal Flood AdvisoryINDClay, Fountain, Parke, Vermillion, Vigo5 hr
May 7, 8:55 PM EDTFlash Flood WarningINDClay, Greene, Owen, Putnam, Sullivan, Vigo6 hr
May 7, 9:02 PM EDTTornado WarningINDClay, Greene, Sullivan, Vigo43 min
May 7, 9:26 PM EDTSevere Thunderstorm WarningINDSullivan, Vigo20 min
May 7, 9:37 PM EDTTornado WarningINDDaviess, Greene, Martin38 min
May 7, 10:12 PM EDTTornado WarningINDGreene, Lawrence, Martin48 min
May 7, 10:45 PM EDTFlash Flood WarningINDDaviess, Greene, Knox, Lawrence, Martin6 hr

Nearby

Tornado Warnings in Indiana, 2011Every tornado warning in 2011Tornadoes 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.