Alert archive / Ohio / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 92, NWS Cleveland, OH

August 12, 2021Portage County, Summit County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Aug 12, 2021, 4:09 PM EDT for Portage County, Summit County, Ohio. It was in force for 51 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: Aug 12, 2021, 4:09 PM EDT (20:09 UTC)
Expired: Aug 12, 2021, 5:00 PM EDT
In force: 51 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Portage County, OH, Summit County, OH

The radar

The Cleveland radar (KCLE), 54 km from the middle of the area, began a volume at 20:08 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
Aug 12, 4:11 PM EDT	TSTM WND DMG	3 Sw Silver Lake, OH	TREE DOWN ON GARAGE.
Aug 12, 4:14 PM EDT	TSTM WND DMG	2 Sw Munroe Falls, OH	LARGE LIMB DOWN.

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
Aug 12, 3:48 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 8.2 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-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: 1075 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 890 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted.

897 
WUUS51 KCLE 122009
SVRCLE
OHC133-153-122100-
/O.NEW.KCLE.SV.W.0092.210812T2009Z-210812T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cleveland OH
409 PM EDT Thu Aug 12 2021

The National Weather Service in Cleveland has issued a

* Severe Thunderstorm Warning for...
  Southwestern Portage County in northeastern Ohio...
  Central Summit County in northeastern Ohio...

* Until 500 PM EDT.

* At 409 PM EDT, a severe thunderstorm was located over Akron, moving
  east at 20 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Expect damage to 
           trees and power lines.

* Locations impacted include...
  Akron, Ravenna, Cuyahoga Falls, Kent, Barberton, Tallmadge,
  Mogadore, Stow, Norton, Brimfield, Fairlawn, Randolph, Munroe
  Falls, Lakemore, Atwater, Edinburg, Silver Lake, Brady Lake,
  Portage Lakes and Montrose-Ghent.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4102 8169 4116 8161 4120 8112 4099 8110
      4099 8122
TIME...MOT...LOC 2009Z 263DEG 18KT 4108 8153 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Kahn

1 follow-up statement

955 
WWUS51 KCLE 122036
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
436 PM EDT Thu Aug 12 2021

OHC133-153-122100-
/O.CON.KCLE.SV.W.0092.000000T0000Z-210812T2100Z/
Portage OH-Summit OH-
436 PM EDT Thu Aug 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR SOUTHWESTERN PORTAGE AND EAST CENTRAL SUMMIT COUNTIES...

At 436 PM EDT, a severe thunderstorm was located near Kent, or 7
miles southwest of Ravenna, moving east at 20 mph.

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

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Expect damage to 
         trees and power lines.

Locations impacted include...
Akron, Ravenna, Kent, Barberton, Tallmadge, Mogadore, Stow,
Brimfield, Randolph, Munroe Falls, Lakemore, Atwater, Edinburg, Brady
Lake and Portage Lakes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4102 8160 4118 8138 4120 8112 4099 8110
      4099 8122
TIME...MOT...LOC 2036Z 263DEG 18KT 4110 8135 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Kahn

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 12, 4:14 AM EDT	Heat Advisory	CLE	Ashland, Crawford, Cuyahoga, Erie, Hancock, Holmes and 19 more	15 hr
Aug 12, 4:56 AM EDT	Special Marine Warning	CLE		64 min
Aug 12, 5:12 AM EDT	Special Marine Warning	CLE		33 min
Aug 12, 7:33 AM EDT	Special Marine Warning	CLE		87 min
Aug 12, 8:21 AM EDT	Special Weather Statement	CLE	Medina	39 min
Aug 12, 8:59 AM EDT	Special Marine Warning	CLE		71 min
Aug 12, 9:03 AM EDT	Special Weather Statement	CLE	Ashtabula, Lake	42 min
Aug 12, 10:15 AM EDT	Special Weather Statement	CLE	Cuyahoga, Geauga, Portage	45 min
Aug 12, 10:23 AM EDT	Areal Flood Advisory	CLE	Cuyahoga	2 hr
Aug 12, 10:28 AM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Cuyahoga, Geauga, Portage, Summit, Trumbull	47 min
Aug 12, 11:01 AM EDT	Severe Thunderstorm Warning Considerable damage threat	CLE	Ashtabula, Trumbull	40 min
Aug 12, 3:29 PM EDT	Special Weather Statement	CLE	Portage, Trumbull	46 min
Aug 12, 3:37 PM EDT	Special Weather Statement	CLE	Geauga	53 min
Aug 12, 3:42 PM EDT	Severe Thunderstorm Warning	CLE	Geauga, Portage, Summit	48 min
Aug 12, 3:54 PM EDT	Special Weather Statement	CLE	Mahoning	51 min
Aug 12, 4:00 PM EDT	Special Weather Statement	CLE	Summit	45 min
Aug 12, 4:27 PM EDT	Severe Thunderstorm Warning	CLE	Geauga, Portage, Summit, Trumbull	63 min
Aug 12, 4:52 PM EDT	Severe Thunderstorm Warning	CLE	Mahoning, Portage	68 min
Aug 12, 6:11 PM EDT	Special Weather Statement	CLE	Morrow, Richland	64 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2021 Every severe thunderstorm warning in 2021

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.