Alert archive / Indiana / Tornado Warnings in 2013

Tornado Warning 10, NWS Indianapolis, IN

May 21, 2013Hendricks County, Indiana

NWS Indianapolis, IN issued this tornado warning at May 21, 2013, 2:55 AM EDT for Hendricks County, Indiana. It was in force for 35 min. 2 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: May 21, 2013, 2:55 AM EDT (06:55 UTC)
Expired: May 21, 2013, 3:30 AM EDT
In force: 35 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Hendricks County, IN

The radar

The Indianapolis radar (KIND), 18 km from the middle of the area, began a volume at 06:57 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
May 21, 3:00 AM EDT	TSTM WND DMG	3 W Plainfield, IN	TREES DOWNED NEAR CARTERSBURG
May 21, 3:00 AM EDT	TSTM WND DMG	7 S Danville, IN	TREES DOWN IN HAZELWOOD.

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
May 20, 11:56 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 6.9 hours before the alert went out and 190 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: 1540 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1320 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 6.7

Open this sounding in Storm Lab

The text

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

550 
WFUS53 KIND 210655
TORIND
INC063-210730-
/O.NEW.KIND.TO.W.0010.130521T0655Z-130521T0730Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
255 AM EDT TUE MAY 21 2013

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN HENDRICKS COUNTY IN CENTRAL INDIANA...

* UNTIL 330 AM EDT

* AT 253 AM EDT...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
  A TORNADO WAS LOCATED ALONG A LINE EXTENDING FROM 7 MILES SOUTH OF
  DANVILLE TO 10 MILES WEST OF MOORESVILLE...AND MOVING EAST AT 35
  MPH.

  HAZARD...DEVELOPING TORNADO.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...MOBILE HOMES WILL BE HEAVILY DAMAGED OR DESTROYED.
           SIGNIFICANT DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL
           OCCUR. FLYING DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS.
           EXTENSIVE TREE DAMAGE IS LIKELY.

* LOCATIONS IMPACTED INCLUDE...
  PLAINFIELD.

THIS INCLUDES INTERSTATE 70 BETWEEN MILE MARKERS 59 AND 68.

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.

&&

LAT...LON 3968 8657 3973 8633 3963 8634 3963 8646
      3961 8647 3961 8657
TIME...MOT...LOC 0655Z 268DEG 32KT 3967 8653 3961 8653

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

SMF

1 follow-up statement

028 
WWUS53 KIND 210708
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
308 AM EDT TUE MAY 21 2013

INC063-210718-
/O.CAN.KIND.TO.W.0010.000000T0000Z-130521T0730Z/
HENDRICKS IN-
308 AM EDT TUE MAY 21 2013

...THE TORNADO WARNING FOR SOUTHEASTERN HENDRICKS COUNTY IS
CANCELLED...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN
EFFECT FOR THE AREA.  HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH
THESE THUNDERSTORMS.

LAT...LON 3968 8657 3973 8633 3963 8634 3963 8646
      3961 8647 3961 8657
TIME...MOT...LOC 0708Z 268DEG 32KT 3967 8638 3961 8638

$$

SMF

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 2:00 AM EDT	Special Weather Statement	IND	Clay, Fountain, Montgomery, Owen, Parke, Putnam and 3 more	45 min
May 21, 2:30 AM EDT	Special Weather Statement	IND	Daviess, Greene, Martin	45 min
May 21, 2:39 AM EDT	Severe Thunderstorm Warning	IND	Boone, Carroll, Clinton, Hendricks, Montgomery, Morgan and 3 more	51 min
May 21, 2:45 AM EDT	Severe Thunderstorm Warning	IND	Daviess, Greene, Lawrence, Martin, Monroe, Morgan and 1 more	45 min
May 21, 3:00 AM EDT	Severe Thunderstorm Warning	IND	Boone, Carroll, Clinton, Hamilton, Hendricks, Howard and 4 more	45 min
May 21, 3:49 AM EDT	Severe Thunderstorm Warning	IND	Delaware, Henry, Madison	41 min
May 21, 3:57 AM EDT	Severe Thunderstorm Warning	IND	Decatur, Henry, Jennings, Rush	48 min
May 21, 4:17 AM EDT	Severe Thunderstorm Warning	IND	Randolph	43 min

Nearby

Tornado Warnings in Indiana, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.