Alert archive / Ohio / Tornado Warnings in 2018

Tornado Warning 3, NWS Cleveland, OH

September 20, 2018Ashtabula County, Geauga County, Trumbull County, Ohio

NWS Cleveland, OH issued this tornado warning at Sep 20, 2018, 2:17 PM EDT for Ashtabula County, Geauga County, Trumbull County, Ohio. It was in force for 28 min. 9 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, 2:17 PM EDT (18:17 UTC)
Expired
Sep 20, 2018, 2:45 PM EDT
In force
28 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Ashtabula County, OH, Geauga County, OH, Trumbull County, OH

The radar

The Cleveland radar (KCLE), 76 km from the middle of the area, began a volume at 18:19 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

TimeReportWhereRemark
Sep 20, 2:23 PM EDTTSTM WND DMG3 Nnw Middlefield, OHNUMEROUS TREES DOWN ON PRINSTON RD.
Sep 20, 2:25 PM EDTTSTM WND DMG1 N Middlefield, OHBUILDING UNDER CONSTRUCTION WAS DESTROYED. POSSIBLE TORNADO.
Sep 20, 2:25 PM EDTTSTM WND DMGMiddlefield, OHNUMEROUS TREES DOWN IN TOWN.
Sep 20, 2:27 PM EDTTSTM WND DMG2 Ne Middlefield, OHNUMEROUS TREES AND POWER LINES DOWN NAUVOO RD.
Sep 20, 2:27 PM EDTTSTM WND DMG3 E Middlefield, OHA ROOF OF A MOBILE HOME, INTERSECTION OF KINSMAN RD AND BUNDYSBURG RD. POSSIBLE TORNADO.
Sep 20, 2:27 PM EDTTSTM WND DMGMiddlefield, OHA ROOF OF A STRUCTURE ON KINSMAN ROAD. TREES AND WIRES DOWN ON NAUVOO ROAD. POSSIBLE TORNADO.
Sep 20, 2:41 PM EDTTSTM WND DMG5 N West Farmington, OHTREE DOWN BY THUNDERSTORM WINDS IN MESOPOTAMIA.
Sep 20, 2:51 PM EDTTSTM WND DMG2 Nnw West Farmington, OHNUMEROUS TREES DOWN BY THUNDERSTORM WINDS. POSSIBLE TORNADO. TIME ESTIMATED.
Sep 20, 2:54 PM EDTTSTM WND DMG1 E West Farmington, OHTREE DOWN BY THUNDERSTORM WINDS

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, 6.3 hours before the alert went out and 132 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, Pittsburgh, PA at 12:00Z on 2018-09-20Temperature 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, Pittsburgh, PA at 12:00Z on 2018-09-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 square meters per square second.193958Sfc1 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
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.

468 
WFUS51 KCLE 201817
TORCLE
OHC007-055-155-201845-
/O.NEW.KCLE.TO.W.0003.180920T1817Z-180920T1845Z/

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

The National Weather Service in Cleveland has issued a

* Tornado Warning for...
  Northwestern Trumbull County in northeastern Ohio...
  Southeastern Geauga County in northeastern Ohio...
  Southwestern Ashtabula County in northeastern Ohio...

* Until 245 PM EDT.
    
* At 217 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Burton, or near 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...
  Middlefield around 230 PM EDT.
  North Bloomfield, West Farmington and Bristolville around 245 PM 
  EDT.

Other locations impacted by this tornadic thunderstorm include
Parkman, Huntsburg, Mecca, Champion Heights, Aquilla, Claridon and
Howland Center.

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 4148 8064 4123 8078 4133 8100 4135 8101
      4135 8106 4145 8129 4161 8119
TIME...MOT...LOC 1817Z 293DEG 21KT 4150 8115 

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

$$

King
2 follow-up statements
718 
WWUS51 KCLE 201836
SVSCLE

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

OHC007-201844-
/O.CAN.KCLE.TO.W.0003.000000T0000Z-180920T1845Z/
Ashtabula OH-
236 PM EDT THU SEP 20 2018

...THE TORNADO WARNING FOR SOUTHWESTERN ASHTABULA COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning will move 
south of the region. Therefore, the warning has been cancelled.

LAT...LON 4156 8100 4150 8100 4150 8076 4129 8090
      4133 8100 4135 8101 4135 8106 4142 8116
      4157 8107
TIME...MOT...LOC 1834Z 294DEG 18KT 4147 8106 

$$

OHC055-155-201845-
/O.CON.KCLE.TO.W.0003.000000T0000Z-180920T1845Z/
Trumbull OH-Geauga OH-
236 PM EDT THU SEP 20 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM EDT FOR
NORTHWESTERN TRUMBULL AND SOUTHEASTERN GEAUGA COUNTIES...
    
At 234 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Middlefield, or 11 miles southeast of Chardon,
moving southeast at 20 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...
  North Bloomfield and West Farmington around 245 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Parkman and Huntsburg.

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 4156 8100 4150 8100 4150 8076 4129 8090
      4133 8100 4135 8101 4135 8106 4142 8116
      4157 8107
TIME...MOT...LOC 1834Z 294DEG 18KT 4147 8106 

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

$$

King
734 
WWUS51 KCLE 201837
SVSCLE

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

OHC055-155-201845-
/O.CON.KCLE.TO.W.0003.000000T0000Z-180920T1845Z/
Trumbull OH-Geauga OH-
237 PM EDT THU SEP 20 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM EDT FOR
NORTHWESTERN TRUMBULL AND SOUTHEASTERN GEAUGA COUNTIES...
    
At 236 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Middlefield, or 11 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...
  North Bloomfield, West Farmington and Bristolville around 245 PM 
  EDT.

Other locations impacted by this tornadic thunderstorm include
Parkman and Huntsburg.

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 4156 8100 4150 8100 4150 8076 4129 8090
      4133 8100 4135 8101 4135 8106 4142 8116
      4157 8107
TIME...MOT...LOC 1836Z 293DEG 21KT 4146 8104 

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

$$

LaPlante

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 20, 2:26 PM EDTSevere Thunderstorm WarningCLECuyahoga, Lorain, Medina, Summit49 min
Sep 20, 2:43 PM EDTTornado WarningCLEGeauga, Trumbull47 min
Sep 20, 3:28 PM EDTSevere Thunderstorm WarningCLETrumbull26 min
Sep 20, 4:01 PM EDTSmall Craft AdvisoryCLE47 hr
Sep 20, 7:18 PM EDTSpecial Weather StatementCLELucas57 min

Nearby

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