Alert archive / Ohio / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 33, NWS Cleveland, OH

June 30, 20214 counties in Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Jun 30, 2021, 2:55 PM EDT for 4 counties in Ohio. It was in force for 50 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: Jun 30, 2021, 2:55 PM EDT (18:55 UTC)
Expired: Jun 30, 2021, 3:45 PM EDT
In force: 50 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Crawford County, OH, Huron County, OH, Richland County, OH, Seneca County, OH

The radar

The Cleveland radar (KCLE), 74 km from the middle of the area, began a volume at 18:57 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
Jun 30, 3:07 PM EDT	TSTM WND DMG	Greenwich, OH	HURON COUNTY SHERIFF REPORTS A TREE DOWN ON TOWNSEND STREET IN GREENWICH.

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

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 6.9 hours before the alert went out and 191 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: 599 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 649 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

911 
WUUS51 KCLE 301855
SVRCLE
OHC033-077-139-147-301945-
/O.NEW.KCLE.SV.W.0033.210630T1855Z-210630T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cleveland OH
255 PM EDT Wed Jun 30 2021

The National Weather Service in Cleveland has issued a

* Severe Thunderstorm Warning for...
  Northern Richland County in north central Ohio...
  Huron County in north central Ohio...
  Eastern Seneca County in northwestern Ohio...
  Northern Crawford County in north central Ohio...

* Until 345 PM EDT.

* At 255 PM EDT, severe thunderstorms were located along a line
  extending from near Bellevue to near Bloomville, moving east at 40
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Norwalk, Shelby, Willard, New London, Plymouth, Wakeman, New
  Washington, Bloomville, Chatfield, Greenwich, Monroeville, Attica,
  North Fairfield, Flat Rock, Shenandoah and Olivesburg.

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 4124 8296 4128 8235 4107 8234 4106 8244
      4088 8241 4094 8308
TIME...MOT...LOC 1855Z 269DEG 33KT 4124 8291 4101 8298 

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

Greenawalt

2 follow-up statements

965 
WWUS51 KCLE 301919
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
319 PM EDT Wed Jun 30 2021

OHC033-147-301928-
/O.CAN.KCLE.SV.W.0033.000000T0000Z-210630T1945Z/
Seneca OH-Crawford OH-
319 PM EDT Wed Jun 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN SENECA AND NORTHERN
CRAWFORD COUNTIES IS CANCELLED...

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

LAT...LON 4100 8273 4100 8279 4125 8276 4127 8250
      4128 8235 4107 8234 4106 8244 4093 8242
TIME...MOT...LOC 1918Z 266DEG 33KT 4124 8269 4104 8274 

$$

OHC077-139-301945-
/O.CON.KCLE.SV.W.0033.000000T0000Z-210630T1945Z/
Richland OH-Huron OH-
319 PM EDT Wed Jun 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR NORTH CENTRAL RICHLAND AND HURON COUNTIES...

At 318 PM EDT, severe thunderstorms were located along a line
extending from near Norwalk to Willard, moving east at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Norwalk, Willard, New London, Plymouth, Wakeman, Greenwich,
Monroeville and North Fairfield.

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 4100 8273 4100 8279 4125 8276 4127 8250
      4128 8235 4107 8234 4106 8244 4093 8242
TIME...MOT...LOC 1918Z 266DEG 33KT 4124 8269 4104 8274 

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

Greenawalt

618 
WWUS51 KCLE 301942
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
342 PM EDT Wed Jun 30 2021

OHC077-139-301951-
/O.EXP.KCLE.SV.W.0033.000000T0000Z-210630T1945Z/
Richland OH-Huron OH-
342 PM EDT Wed Jun 30 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL RICHLAND AND
HURON COUNTIES WILL EXPIRE AT 345 PM EDT...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will 
be allowed to expire.  However, heavy rain is still possible with 
these thunderstorms.

LAT...LON 4100 8273 4100 8279 4125 8276 4127 8250
      4128 8235 4107 8234 4106 8244 4093 8242
TIME...MOT...LOC 1941Z 269DEG 33KT 4124 8243 4104 8248 

$$

Greenawalt

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 10:29 PM EDT	Special Weather Statement	CLE	Holmes	31 min
Jun 30, 1:50 PM EDT	Special Weather Statement	CLE	Wood	40 min
Jun 30, 2:29 PM EDT	Special Weather Statement	CLE	Huron, Sandusky, Seneca	61 min
Jun 30, 3:14 PM EDT	Areal Flood Advisory	CLE	Crawford, Huron, Seneca	5 hr
Jun 30, 3:24 PM EDT	Special Weather Statement	CLE	Ashland	36 min
Jun 30, 3:40 PM EDT	Special Weather Statement	CLE	Lorain	35 min
Jun 30, 4:23 PM EDT	Special Weather Statement	CLE	Mahoning	52 min
Jun 30, 4:34 PM EDT	Special Weather Statement	CLE	Stark	56 min
Jun 30, 4:43 PM EDT	Areal Flood Advisory	CLE	Mahoning, Portage, Trumbull	3 hr
Jun 30, 4:49 PM EDT	Special Weather Statement	CLE	Mahoning	41 min
Jun 30, 4:51 PM EDT	Areal Flood Advisory	CLE	Stark, Summit	3 hr

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.