Alert archive / Ohio / Tornado Warnings in 2011

Tornado Warning 61, NWS Wilmington, OH

August 7, 2011Champaign County, Madison County, Union County, Ohio

NWS Wilmington, OH issued this tornado warning at Aug 7, 2011, 4:24 PM EDT for Champaign County, Madison County, Union County, Ohio. It was in force for 13 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: Aug 7, 2011, 4:24 PM EDT (20:24 UTC)
Expired: Aug 7, 2011, 4:37 PM EDT
In force: 13 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon

Counties Champaign County, OH, Madison County, OH, Union County, OH

The radar

The Cincinnati radar (KILN), 87 km from the middle of the area, began a volume at 20:26 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.

Issued	Product	Office	Lasted
Aug 7, 1:11 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.4 hours before the alert went out and 86 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: 1233 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 540 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: -20 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

826 
WFUS51 KILN 072024
TORILN
OHC021-097-159-072100-
/O.NEW.KILN.TO.W.0061.110807T2024Z-110807T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
424 PM EDT SUN AUG 7 2011

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN MADISON COUNTY IN CENTRAL OHIO...
  SOUTHERN UNION COUNTY IN CENTRAL OHIO...
  EASTERN CHAMPAIGN COUNTY IN WEST CENTRAL OHIO...

* UNTIL 500 PM EDT.

* AT 422 PM EDT...RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
  URBANA...MOVING EAST AT 40 MPH. IN ADDITION TO THE TORNADO...THIS
  STORM IS CAPABLE OF PRODUCING DESTRUCTIVE STRAIGHT LINE WINDS.

* LOCATIONS IMPACTED INCLUDE...
  NORTH LEWISBURG...
  MECHANICSBURG...

IN ADDITION...KENNARD...MINGO...CABLE...MUTUAL...WOODSTOCK...STATE
ROUTE 4 AT STATE ROUTE 161...MILFORD CENTER AND ROSEDALE ARE NEAR THE
PATH OF THIS DANGEROUS THUNDERSTORM.

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.

PLEASE REPORT TORNADOES...FUNNEL CLOUDS...STRONG WINDS OR HAIL TO THE
NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...877-633-6772...WHEN
YOU CAN DO SO SAFELY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT SUNDAY
EVENING FOR SOUTHEASTERN INDIANA AND SOUTHWESTERN OHIO.

&&

LAT...LON 4024 8378 4025 8377 4024 8373 4020 8336
      4001 8339 4012 8384 4025 8380 4025 8379
TIME...MOT...LOC 2024Z 278DEG 37KT 4014 8375

$$


BINAU

1 follow-up statement

193 
WWUS51 KILN 072037
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
437 PM EDT SUN AUG 7 2011

OHC021-097-159-072046-
/O.CAN.KILN.TO.W.0061.000000T0000Z-110807T2100Z/
CHAMPAIGN OH-MADISON OH-UNION OH-
437 PM EDT SUN AUG 7 2011

...THE TORNADO WARNING FOR SOUTHERN UNION AND NORTHERN MADISON
COUNTIES IN CENTRAL OHIO...AND EASTERN CHAMPAIGN COUNTY IN WEST
CENTRAL OHIO HAS BEEN CANCELLED...

THE STRONG ROTATION ON RADAR HAS WEAKENED CONSIDERABLY...THEREFORE 
THE TORNADO WARNING HAS BEEN CANCELLED.

GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS STORM.

PLEASE REPORT PREVIOUS TORNADOES...WIND DAMAGE OR HAIL TO THE
NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...877-633-6772.

A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR PARTS OF THE 
AREA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM EDT

LAT...LON 4024 8378 4025 8377 4024 8373 4020 8336
      4001 8339 4012 8384 4025 8380 4025 8379
TIME...MOT...LOC 2036Z 278DEG 37KT 4012 8359

$$


BINAU

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 7, 12:34 AM EDT	Areal Flood Advisory	ILN	Hardin	116 min
Aug 7, 5:28 AM EDT	Special Weather Statement	ILN	Hamilton	32 min
Aug 7, 5:29 AM EDT	Areal Flood Advisory	ILN	Hamilton	4 hr
Aug 7, 6:18 AM EDT	Areal Flood Advisory	ILN	Brown, Clermont, Hamilton	3 hr
Aug 7, 7:24 AM EDT	Special Weather Statement	ILN	Pike	51 min
Aug 7, 7:37 AM EDT	Special Weather Statement	ILN	Scioto	38 min
Aug 7, 7:46 AM EDT	Areal Flood Advisory	ILN	Highland, Pike	2 hr
Aug 7, 2:59 PM EDT	Severe Thunderstorm Warning	ILN	Auglaize, Darke, Mercer, Shelby	61 min
Aug 7, 3:22 PM EDT	Severe Thunderstorm Warning	ILN	Darke, Miami	53 min
Aug 7, 3:26 PM EDT	Severe Thunderstorm Warning	ILN	Auglaize, Shelby	64 min
Aug 7, 3:43 PM EDT	Severe Thunderstorm Warning	ILN	Champaign, Clark, Miami	47 min
Aug 7, 3:57 PM EDT	Severe Thunderstorm Warning	ILN	Champaign, Hardin, Logan	48 min
Aug 7, 4:06 PM EDT	Severe Thunderstorm Warning	ILN	Franklin, Madison	54 min
Aug 7, 4:21 PM EDT	Severe Thunderstorm Warning	ILN	Clark, Greene, Miami, Montgomery, Preble	39 min
Aug 7, 4:38 PM EDT	Severe Thunderstorm Warning	ILN	Champaign, Hardin, Logan, Madison, Union	33 min
Aug 7, 4:58 PM EDT	Areal Flood Advisory	ILN	Franklin, Madison	2 hr
Aug 7, 5:06 PM EDT	Special Weather Statement	ILN	Delaware, Franklin, Licking	54 min
Aug 7, 5:24 PM EDT	Special Weather Statement	ILN	Fayette, Pickaway	66 min
Aug 7, 5:28 PM EDT	Special Weather Statement	ILN	Butler, Hamilton, Warren	62 min
Aug 7, 5:32 PM EDT	Severe Thunderstorm Warning	ILN	Fairfield	10 min
Aug 7, 6:03 PM EDT	Special Weather Statement	ILN	Fairfield, Hocking	42 min
Aug 7, 7:10 PM EDT	Special Weather Statement	ILN	Adams, Brown, Pike, Scioto	65 min

Nearby

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