Alert archive / Ohio / Tornado Warnings in 2018

Tornado Warning 4, NWS Cleveland, OH

September 20, 2018Geauga County, Trumbull County, Ohio

NWS Cleveland, OH issued this tornado warning at Sep 20, 2018, 2:43 PM EDT for Geauga County, Trumbull County, Ohio. It was in force for 47 min. 3 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: Sep 20, 2018, 2:43 PM EDT (18:43 UTC)
Expired: Sep 20, 2018, 3:30 PM EDT
In force: 47 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Geauga County, OH, Trumbull County, OH

The radar

The Cleveland radar (KCLE), 76 km from the middle of the area, began a volume at 18:46 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
Sep 20, 2:51 PM EDT	TSTM WND DMG	2 Nnw West Farmington, OH	NUMEROUS TREES DOWN BY THUNDERSTORM WINDS. POSSIBLE TORNADO. TIME ESTIMATED.
Sep 20, 2:54 PM EDT	TSTM WND DMG	1 E West Farmington, OH	TREE DOWN BY THUNDERSTORM WINDS
Sep 20, 3:30 PM EDT	TSTM WND DMG	2 N Champion Heights, OH	SEVERAL TREES DOWN BY THUNDERSTORM WINDS IN CHAMPION

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 12:00Z, 6.7 hours before the alert went out and 133 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: 1093 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 61 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

156 
WFUS51 KCLE 201843
TORCLE
OHC055-155-201930-
/O.NEW.KCLE.TO.W.0004.180920T1843Z-180920T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Cleveland OH
243 PM EDT THU SEP 20 2018

The National Weather Service in Cleveland has issued a

* Tornado Warning for...
  Western Trumbull County in northeastern Ohio...
  Southeastern Geauga County in northeastern Ohio...

* Until 330 PM EDT.
    
* At 243 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Middlefield, or 14 miles southeast of Chardon,
  moving southeast at 25 mph.

  HAZARD...Tornado and quarter size hail.

  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.

* This dangerous storm will be near...
  West Farmington around 255 PM EDT.
  North Bloomfield around 300 PM EDT.
  Bristolville around 305 PM EDT.
  Leavittsburg around 315 PM EDT.
  Warren around 320 PM EDT.
  Cortland around 330 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Parkman, Howland Center, Bolindale, Johnston, Mecca and Champion
Heights.

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.

&&

LAT...LON 4152 8100 4150 8100 4150 8089 4145 8063
      4120 8077 4133 8101 4135 8101 4135 8104
      4139 8111 4153 8103
TIME...MOT...LOC 1843Z 292DEG 20KT 4143 8102 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

King

1 follow-up statement

435 
WWUS51 KCLE 201911
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
311 PM EDT THU SEP 20 2018

OHC055-201920-
/O.CAN.KCLE.TO.W.0004.000000T0000Z-180920T1930Z/
Geauga OH-
311 PM EDT THU SEP 20 2018

...THE TORNADO WARNING FOR SOUTHEASTERN GEAUGA COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 4145 8090 4136 8068 4120 8077 4132 8098
      4134 8099 4137 8098 4145 8096
TIME...MOT...LOC 1910Z 301DEG 15KT 4136 8091 

$$

OHC155-201930-
/O.CON.KCLE.TO.W.0004.000000T0000Z-180920T1930Z/
Trumbull OH-
311 PM EDT THU SEP 20 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM EDT FOR WESTERN
TRUMBULL COUNTY...
    
At 310 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Bristolville, or 9 miles northwest of Warren, moving
southeast at 15 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Radar indicated rotation. Also damage to structures has 
         been reported in Geauga county.

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.

This dangerous storm will be near...
  Bristolville around 315 PM EDT.
  Warren, Cortland and Leavittsburg around 330 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Champion Heights, Howland Center and Bolindale.

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.

&&

LAT...LON 4145 8090 4136 8068 4120 8077 4132 8098
      4134 8099 4137 8098 4145 8096
TIME...MOT...LOC 1910Z 301DEG 15KT 4136 8091 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

King

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 20, 2:17 PM EDT	Tornado Warning	CLE	Ashtabula, Geauga, Trumbull	28 min
Sep 20, 2:26 PM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga, Lorain, Medina, Summit	49 min
Sep 20, 3:28 PM EDT	Severe Thunderstorm Warning	CLE	Trumbull	26 min
Sep 20, 4:01 PM EDT	Small Craft Advisory	CLE		47 hr
Sep 20, 7:18 PM EDT	Special Weather Statement	CLE	Lucas	57 min

Nearby

Tornado Warnings in Ohio, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.