Alert archive / Ohio / Tornado Warnings in 2009

Tornado Warning 11, NWS Cleveland, OH

August 20, 2009Stark County, Ohio

NWS Cleveland, OH issued this tornado warning at Aug 20, 2009, 6:56 PM EDT for Stark County, Ohio. It was in force for 29 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: Aug 20, 2009, 6:56 PM EDT (22:56 UTC)
Expired: Aug 20, 2009, 7:25 PM EDT
In force: 29 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon

County Stark County, OH

The radar

The Cleveland radar (KCLE), 75 km from the middle of the area, began a volume at 22:57 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.

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 20, 2:41 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 10.9 hours before the alert went out and 115 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: 778 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 608 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS51 KCLE 202256
TORCLE
OHC151-202345-
/O.NEW.KCLE.TO.W.0011.090820T2256Z-090820T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
656 PM EDT THU AUG 20 2009

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN STARK COUNTY IN NORTHEAST OHIO

* UNTIL 745 PM EDT

* AT 655 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR CANTON...AND MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GREENTOWN...
  LOUISVILLE...
  HARTVILLE...
  EAST CANTON...
  UNIONTOWN...
  LIMAVILLE...
  ALLIANCE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. IF NO
BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE
BUILDING IN AN INTERIOR HALLWAY OR CLOSET.

&&

PLEASE REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE. 1-877-633-6772. WHEN YOU CAN DO SO SAFELY.

LAT...LON 4080 8109 4076 8144 4086 8149 4091 8146
      4092 8141 4099 8141 4098 8109
TIME...MOT...LOC 2256Z 241DEG 41KT 4083 8143

$$

LEINS

1 follow-up statement

000 
WWUS51 KCLE 202325
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
725 PM EDT THU AUG 20 2009

OHC151-202327-
/O.CAN.KCLE.TO.W.0011.000000T0000Z-090820T2345Z/
STARK OH-
725 PM EDT THU AUG 20 2009

...THE TORNADO WARNING FOR NORTHEASTERN STARK COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR NORTHEAST OHIO AND NORTHWEST PENNSYLVANIA.

LAT...LON 4080 8109 4076 8144 4086 8149 4091 8146
      4092 8141 4099 8141 4098 8109
TIME...MOT...LOC 2317Z 241DEG 41KT 4093 8114

$$

MITCHELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 8:04 PM EDT	Severe Thunderstorm Warning	CLE	Erie, Huron, Lorain	35 min
Aug 19, 8:10 PM EDT	Special Marine Warning	CLE		85 min
Aug 19, 9:51 PM EDT	Flash Flood Warning	CLE	Marion, Morrow	4 hr
Aug 20, 9:16 AM EDT	Small Craft Advisory	CLE		36 hr
Aug 20, 2:31 PM EDT	Special Marine Warning	CLE		89 min
Aug 20, 2:54 PM EDT	Severe Thunderstorm Warning	CLE	Wyandot	26 min
Aug 20, 3:05 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Seneca	55 min
Aug 20, 3:18 PM EDT	Special Marine Warning	CLE		87 min
Aug 20, 3:35 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	40 min
Aug 20, 3:40 PM EDT	Special Marine Warning	CLE		2 hr
Aug 20, 4:09 PM EDT	Severe Thunderstorm Warning	CLE	Marion, Morrow	51 min
Aug 20, 4:16 PM EDT	Severe Thunderstorm Warning	CLE	Huron, Richland	44 min
Aug 20, 4:21 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	39 min
Aug 20, 4:33 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Richland	57 min
Aug 20, 4:35 PM EDT	Severe Thunderstorm Warning	CLE	Lorain	25 min
Aug 20, 4:38 PM EDT	Tornado Warning	CLE	Lorain	18 min
Aug 20, 4:46 PM EDT	Special Marine Warning	CLE		29 min
Aug 20, 4:46 PM EDT	Severe Thunderstorm Warning	CLE	Lorain	44 min
Aug 20, 5:06 PM EDT	Severe Thunderstorm Warning	CLE	Knox	54 min
Aug 20, 5:14 PM EDT	Severe Thunderstorm Warning	CLE	Medina	61 min
Aug 20, 5:38 PM EDT	Special Marine Warning	CLE		112 min
Aug 20, 5:42 PM EDT	Severe Thunderstorm Warning	CLE	Wayne	48 min
Aug 20, 5:47 PM EDT	Severe Thunderstorm Warning	CLE	Summit	43 min
Aug 20, 5:52 PM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga	38 min
Aug 20, 6:00 PM EDT	Severe Thunderstorm Warning	CLE	Geauga, Lake, Portage	60 min
Aug 20, 6:29 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula, Trumbull	61 min
Aug 20, 6:43 PM EDT	Tornado Warning	CLE	Portage	30 min
Aug 20, 7:23 PM EDT	Areal Flood Advisory	CLE	Ashtabula, Mahoning, Trumbull	3 hr
Aug 20, 7:26 PM EDT	Severe Thunderstorm Warning	CLE	Trumbull	49 min
Aug 20, 7:29 PM EDT	Special Marine Warning	CLE		91 min

Nearby

Tornado Warnings in Ohio, 2009 Every tornado warning in 2009 Tornadoes in 2009

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.