Alert archive / Ohio / Tornado Warnings in 2020

Tornado Warning 13, NWS Wilmington, OH

May 18, 2020Franklin County, Madison County, Pickaway County, Ohio

NWS Wilmington, OH issued this tornado warning at May 18, 2020, 4:36 PM EDT for Franklin County, Madison County, Pickaway County, Ohio. It was in force for 24 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 18, 2020, 4:36 PM EDT (20:36 UTC)
Expired: May 18, 2020, 5:00 PM EDT
In force: 24 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Franklin County, OH, Madison County, OH, Pickaway County, OH

The radar

The Cincinnati radar (KILN), 61 km from the middle of the area, began a volume at 20:37 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 18, 4:49 PM EDT	TORNADO 0	1 Ssw Lilly Chapel, OH	EF0 TORNADO CONFIRMED WITH ESTIMATED WINDS OF 85 MPH. DAMAGE TO A BARN IN LILLY CHAPEL.
May 18, 4:56 PM EDT	TORNADO	1 Ssw Lilly Chapel, OH

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 18, 2:18 PM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.6 hours before the alert went out and 59 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: 230 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 1122 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 171 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

630 
WFUS51 KILN 182036
TORILN
OHC049-097-129-182100-
/O.NEW.KILN.TO.W.0013.200518T2036Z-200518T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Wilmington OH
436 PM EDT Mon May 18 2020

The National Weather Service in Wilmington has issued a

* Tornado Warning for...
  Southwestern Franklin County in central Ohio...
  Northwestern Pickaway County in central Ohio...
  Southeastern Madison County in central Ohio...

* Until 500 PM EDT.
    
* At 436 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Mount Sterling, moving northeast at 20 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Columbus, Grove City, Jefferson, West Jefferson, Mount Sterling,
  Lake Darby, Urbancrest, Harrisburg, Orient, Chenoweth, Derby, Lilly
  Chapel, Georgesville, Darbydale, Big Plain and Wrightsville.

This includes the following Interstates...
 I-70 in Ohio between mile markers 82 and 85.
 I-71 in Ohio between mile markers 79 and 101.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 3967 8322 3968 8326 3969 8325 3970 8326
      3970 8331 3973 8342 4000 8332 3988 8301
TIME...MOT...LOC 2036Z 206DEG 17KT 3974 8331 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

ch

1 follow-up statement

655 
WWUS51 KILN 182051
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
451 PM EDT Mon May 18 2020

OHC049-097-129-182100-
/O.CON.KILN.TO.W.0013.000000T0000Z-200518T2100Z/
Franklin OH-Pickaway OH-Madison OH-
451 PM EDT Mon May 18 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR
SOUTHWESTERN FRANKLIN...NORTHWESTERN PICKAWAY AND EAST CENTRAL
MADISON COUNTIES...
    
At 450 PM EDT, a severe thunderstorm capable of producing a tornado
was located 7 miles northeast of Mount Sterling, moving northeast at
25 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Columbus, Grove City, Jefferson, West Jefferson, Lake Darby,
Urbancrest, Harrisburg, Orient, Derby, Lilly Chapel, Georgesville,
Darbydale, Big Plain and Wrightsville.

This includes the following Interstates...
 I-70 in Ohio between mile markers 82 and 84.
 I-71 in Ohio between mile markers 87 and 101.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 3974 8317 3982 8338 4000 8332 3999 8331
      3989 8303
TIME...MOT...LOC 2050Z 212DEG 23KT 3981 8321 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

ch

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 11:27 AM EDT	Special Weather Statement	ILN	Miami	33 min
May 18, 11:50 AM EDT	Special Weather Statement	ILN	Logan	25 min
May 18, 12:12 PM EDT	Special Weather Statement	ILN	Auglaize, Hardin, Logan	33 min
May 18, 2:54 PM EDT	Special Weather Statement	ILN	Adams	36 min
May 18, 3:11 PM EDT	Special Weather Statement	ILN	Brown	34 min
May 18, 3:28 PM EDT	Special Weather Statement	ILN	Adams	32 min
May 18, 3:57 PM EDT	Special Weather Statement	ILN	Highland	33 min
May 18, 4:20 PM EDT	Special Weather Statement	ILN	Fayette	25 min
May 18, 4:25 PM EDT	Special Weather Statement	ILN	Fayette	35 min
May 18, 4:55 PM EDT	Tornado Warning	ILN	Franklin, Madison	21 min
May 18, 5:19 PM EDT	Special Weather Statement	ILN	Delaware	26 min
May 18, 5:51 PM EDT	Areal Flood Advisory	ILN	Auglaize, Champaign, Clark, Greene, Hardin, Logan	6 hr
May 18, 7:31 PM EDT	Areal Flood Advisory	ILN	Brown	4 hr
May 18, 7:42 PM EDT	Areal Flood Advisory	ILN	Delaware, Franklin, Licking	2 hr
May 18, 7:57 PM EDT	River Flood Warning	ILN	Hamilton	8 hr

Nearby

Tornado Warnings in Ohio, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.