Alert archive / Ohio / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 76, NWS Cleveland, OH

September 21, 2018Mahoning County, Portage County, Stark County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Sep 21, 2018, 6:00 PM EDT for Mahoning County, Portage County, Stark County, Ohio. It was in force for 30 min. 1 report 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 21, 2018, 6:00 PM EDT (22:00 UTC)
Expired
Sep 21, 2018, 6:30 PM EDT
In force
30 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

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

The radar

The Pittsburgh radar (KPBZ), 81 km from the middle of the area, began a volume at 22:00 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 21, 6:30 PM EDTTSTM WND DMG3 Nnw Canfield, OHTREE DOWN AT OHIO TURNPIKE AND TURNER. TIME RADAR ESTIMATED.

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.

IssuedProductOfficeLasted
Sep 21, 4:32 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 12:00Z, 10.0 hours before the alert went out and 97 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 2018-09-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 391 joules per kilogram.LCLLFCEL10008507005003002001001 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 2018-09-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 142 square meters per square second.19395878Sfc1 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
391 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
999 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
142 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.8

Open this sounding in Storm Lab

The text

As transmitted.

358 
WUUS51 KCLE 212200
SVRCLE
OHC099-133-151-212230-
/O.NEW.KCLE.SV.W.0076.180921T2200Z-180921T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cleveland OH
600 PM EDT FRI SEP 21 2018

The National Weather Service in Cleveland has issued a

* Severe Thunderstorm Warning for...
  Southern Portage County in northeastern Ohio...
  Western Mahoning County in northeastern Ohio...
  Eastern Stark County in northeastern Ohio...

* Until 630 PM EDT.

* At 559 PM EDT, severe thunderstorms were located along a line
  extending from near Hartville to near Waynesburg, moving east at 55
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Canton, Salem, Alliance, Louisville, Canfield, Sebring, Minerva,
  Hartville, Waynesburg, East Sparta, Austintown, Randolph, Atwater,
  Edinburg, Ellsworth, East Canton, Craig Beach, Beloit, Deerfield
  and Limaville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4105 8135 4114 8100 4113 8075 4090 8076
      4090 8082 4093 8083 4093 8089 4090 8090
      4090 8108 4073 8109 4072 8123 4065 8124
      4065 8138
TIME...MOT...LOC 2159Z 257DEG 46KT 4100 8128 4072 8130 

HAIL...<.75IN
WIND...60MPH
 
$$

King
1 follow-up statement
381 
WWUS51 KCLE 212216
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
616 PM EDT FRI SEP 21 2018

OHC099-133-151-212230-
/O.CON.KCLE.SV.W.0076.000000T0000Z-180921T2230Z/
Portage OH-Mahoning OH-Stark OH-
616 PM EDT FRI SEP 21 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR SOUTHEASTERN PORTAGE...WESTERN MAHONING AND EASTERN STARK
COUNTIES...

At 616 PM EDT, severe thunderstorms were located along a line
extending from 7 miles north of Alliance to Minerva, moving east at
40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Canton, Alliance, Louisville, Canfield, Sebring, Minerva, Waynesburg,
East Sparta, Austintown, Ellsworth, East Canton, Craig Beach, Beloit,
Deerfield, North Jackson, Berlin Center, Maple Ridge, Robertsville,
Maximo and Greenford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4094 8116 4114 8099 4113 8075 4090 8076
      4090 8081 4093 8082 4093 8089 4090 8090
      4090 8108 4073 8109 4072 8123 4065 8124
      4065 8138 4082 8137
TIME...MOT...LOC 2216Z 261DEG 36KT 4101 8109 4073 8111 

HAIL...<.75IN
WIND...60MPH
 
$$

King

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 21, 4:02 AM EDTBeach Hazards StatementCLEAshtabula, Cuyahoga, Erie, Lake, Lorain, Lucas and 1 more35 hr
Sep 21, 4:08 PM EDTSpecial Marine WarningCLE85 min
Sep 21, 4:08 PM EDTSpecial Weather StatementCLEAshland, Ashtabula, Cuyahoga, Lake, Marion, Medina and 2 more37 min
Sep 21, 4:13 PM EDTSevere Thunderstorm WarningCLEAshland, Richland47 min
Sep 21, 4:24 PM EDTSevere Thunderstorm WarningCLECuyahoga, Geauga, Lake27 min
Sep 21, 4:36 PM EDTSevere Thunderstorm WarningCLEAshland, Richland39 min
Sep 21, 5:00 PM EDTSpecial Weather StatementCLEGeauga, Mahoning, Medina, Portage, Stark, Summit and 2 more60 min
Sep 21, 5:18 PM EDTSevere Thunderstorm WarningCLEHolmes, Stark, Summit, Wayne42 min
Sep 21, 5:19 PM EDTSevere Thunderstorm WarningCLEHolmes41 min
Sep 21, 5:43 PM EDTSevere Thunderstorm WarningCLEHolmes47 min
Sep 21, 6:27 PM EDTSevere Thunderstorm WarningCLEMahoning17 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.