Alert archive / Ohio / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 13, NWS Cleveland, OH

May 15, 2018Mahoning County, Portage County, Stark County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at May 15, 2018, 10:27 AM EDT for Mahoning County, Portage County, Stark County, Ohio. It was in force for 48 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
May 15, 2018, 10:27 AM EDT (14:27 UTC)
Expired
May 15, 2018, 11:15 AM EDT
In force
48 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

Counties Mahoning County, OH, Portage County, OH, Stark County, OH

The radar

The Pittsburgh radar (KPBZ), 78 km from the middle of the area, began a volume at 14:29 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 nearest sounding before it

Pittsburgh, PA (KAGC), launched 12:00Z, 2.5 hours before the alert went out and 94 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 2018-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 856 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2018-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 112 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
856 J/kg
Mixed-layer CIN
-79 J/kg
Mixed-layer LCL
1232 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
112 m²/s²
0-3 km storm-relative helicity
185 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.4

Open this sounding in Storm Lab

The text

As transmitted.

741 
WUUS51 KCLE 151427
SVRCLE
OHC099-133-151-151515-
/O.NEW.KCLE.SV.W.0013.180515T1427Z-180515T1515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cleveland OH
1027 AM EDT TUE MAY 15 2018

The National Weather Service in Cleveland has issued a

* Severe Thunderstorm Warning for...
  Southeastern Portage County in northeastern Ohio...
  Mahoning County in northeastern Ohio...
  Northeastern Stark County in northeastern Ohio...

* Until 1115 AM EDT

* At 1027 AM EDT, severe thunderstorms were located along a line
  extending from near Alliance to near Louisville to Canton, moving
  east at 60 mph.

  HAZARD...60 mph wind gusts and nickel size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to trees and power lines. 

* Locations impacted include...
  Canton, Youngstown, Salem, Columbiana, Boardman, Massillon,
  Alliance, Louisville, Campbell, Canfield, Sebring, Austintown,
  Struthers, Poland, Ellsworth, New Middletown, East Canton,
  Lowellville, Beloit and Deerfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4075 8152 4085 8126 4101 8124 4110 8052
      4090 8052 4090 8082 4093 8083 4093 8089
      4090 8090 4090 8108 4080 8109
TIME...MOT...LOC 1427Z 260DEG 53KT 4095 8116 4087 8117 4080 8135 

HAIL...0.88IN
WIND...60MPH
 
$$

Mullen
2 follow-up statements
421 
WWUS51 KCLE 151450
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
1050 AM EDT TUE MAY 15 2018

OHC133-151459-
/O.CAN.KCLE.SV.W.0013.000000T0000Z-180515T1515Z/
Portage OH-
1050 AM EDT TUE MAY 15 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PORTAGE COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4077 8137 4085 8126 4099 8106 4099 8100
      4104 8099 4110 8052 4090 8052 4090 8082
      4093 8083 4093 8089 4090 8090 4090 8108
      4080 8109
TIME...MOT...LOC 1449Z 258DEG 43KT 4095 8087 4091 8090 4077 8127 

$$

OHC099-151-151515-
/O.CON.KCLE.SV.W.0013.000000T0000Z-180515T1515Z/
Mahoning OH-Stark OH-
1050 AM EDT TUE MAY 15 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM EDT
FOR MAHONING AND EAST CENTRAL STARK COUNTIES...

At 1049 AM EDT, severe thunderstorms were located along a line
extending from 7 miles southwest of Canfield to near Salem to near
Louisville, moving east at 50 mph.

HAZARD...60 mph wind gusts and penny size hail. 

SOURCE...Radar indicated. 

IMPACT...Expect damage to trees and power lines. 

Locations impacted include...
Youngstown, Salem, Columbiana, Boardman, Alliance, Louisville,
Campbell, Canfield, Sebring, Austintown, Struthers, Poland,
Ellsworth, New Middletown, East Canton, Lowellville, Beloit, Berlin
Center, Maple Ridge and Maximo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4077 8137 4085 8126 4099 8106 4099 8100
      4104 8099 4110 8052 4090 8052 4090 8082
      4093 8083 4093 8089 4090 8090 4090 8108
      4080 8109
TIME...MOT...LOC 1449Z 258DEG 43KT 4095 8087 4091 8090 4077 8127 

HAIL...0.75IN
WIND...60MPH
 
$$

Mullen
673 
WWUS51 KCLE 151514
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
1114 AM EDT TUE MAY 15 2018

OHC099-151-151523-
/O.EXP.KCLE.SV.W.0013.000000T0000Z-180515T1515Z/
Mahoning OH-Stark OH-
1114 AM EDT TUE MAY 15 2018

...THE SEVERE THUNDERSTORM WARNING FOR MAHONING AND EAST CENTRAL
STARK COUNTIES WILL EXPIRE AT 1115 AM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore the warning will be allowed to expire.

LAT...LON 4077 8137 4085 8126 4099 8106 4099 8100
      4104 8099 4110 8052 4090 8052 4090 8082
      4093 8083 4093 8089 4090 8090 4090 8108
      4080 8109
TIME...MOT...LOC 1513Z 260DEG 53KT 4101 8040 4097 8043 4083 8081 

$$

Mullen

The office that day

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

IssuedProductOfficeCountiesLasted
May 14, 11:30 PM EDTSevere Thunderstorm WarningCLEWood47 min
May 15, 12:23 AM EDTSpecial Weather StatementCLESandusky, Seneca37 min
May 15, 1:02 AM EDTSpecial Weather StatementCLESeneca58 min
May 15, 1:56 AM EDTSpecial Marine WarningCLE64 min
May 15, 3:21 AM EDTSpecial Marine WarningCLE51 min
May 15, 8:01 AM EDTSpecial Weather StatementCLEMedina44 min
May 15, 8:07 AM EDTSpecial Weather StatementCLEMarion38 min
May 15, 9:30 AM EDTSpecial Weather StatementCLEStark, Wayne45 min
May 15, 10:10 AM EDTSpecial Weather StatementCLEStark35 min
May 15, 10:45 AM EDTSpecial Weather StatementCLETrumbull15 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2018Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.