Alert archive / Ohio / Tornado Warnings in 2008

Tornado Warning 1, NWS Cleveland, OH

April 11, 2008Marion County, Ohio

NWS Cleveland, OH issued this tornado warning at Apr 11, 2008, 8:10 PM EDT for Marion County, Ohio. It was in force for 35 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: Apr 11, 2008, 8:10 PM EDT (00:10 UTC)
Expired: Apr 11, 2008, 8:45 PM EDT
In force: 35 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon

County Marion County, OH

The radar

The Cincinnati radar (KILN), 135 km from the middle of the area, began a volume at 00:12 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
Apr 11, 8:45 PM EDT	HAIL 0.75	Marion, OH

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

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.2 hours before the alert went out and 133 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: 176 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1385 m above ground
0-6 km bulk shear: 94 kt
0-1 km storm-relative helicity: 175 m²/s²
0-3 km storm-relative helicity: 376 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

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

000 
WFUS51 KCLE 120010
TORCLE
OHC101-120045-
/O.NEW.KCLE.TO.W.0001.080412T0010Z-080412T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
810 PM EDT FRI APR 11 2008

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* TORNADO WARNING FOR...
  MARION COUNTY IN NORTH CENTRAL OHIO...

* UNTIL 845 PM EDT

* AT 808 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PROSPECT...
  OR ABOUT 13 MILES NORTHWEST OF DELAWARE...MOVING NORTHEAST AT 50
  MPH.

* THE TORNADO WILL BE NEAR...
  PROSPECT AND WALDO BY 815 PM EDT...
  MARION BY 820 PM EDT

THE SAFEST PLACE TO BE DURING A TORNADO IS IN 
A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY 
FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST 
FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A 
CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY 
AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4044 8324 4045 8325 4050 8326 4050 8335
      4070 8310 4069 8295 4050 8296 4049 8301
      4046 8302 4043 8307
TIME...MOT...LOC 0010Z 236DEG 50KT 4044 8323

$$

LAPLANTE

1 follow-up statement

000 
WWUS51 KCLE 120053
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
854 PM EDT FRI APR 11 2008

OHC101-120104-
/O.EXP.KCLE.TO.W.0001.000000T0000Z-080412T0045Z/
MARION OH-
854 PM EDT FRI APR 11 2008

...THE TORNADO WARNING FOR MARION COUNTY EXPIRED AT 845 PM EDT...

LAT...LON 4044 8324 4045 8325 4050 8326 4050 8335
      4070 8310 4069 8295 4050 8296 4049 8301
      4046 8302 4043 8307
TIME...MOT...LOC 0010Z 236DEG 50KT 4041 8320

$$

ASTIFAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 11, 8:34 PM EDT	Tornado Warning	CLE	Crawford, Marion, Morrow, Richland	41 min
Apr 11, 8:47 PM EDT	Severe Thunderstorm Warning	CLE	Erie, Huron	43 min
Apr 11, 8:51 PM EDT	Special Marine Warning	CLE		114 min
Apr 11, 9:04 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Huron, Richland	26 min
Apr 11, 9:06 PM EDT	Severe Thunderstorm Warning	CLE	Ashland, Cuyahoga, Erie, Huron, Lorain, Medina	54 min
Apr 11, 9:06 PM EDT	Tornado Warning	CLE	Ashland, Richland	39 min
Apr 11, 9:10 PM EDT	Tornado Warning	CLE	Ashland, Huron, Lorain, Medina	35 min
Apr 11, 9:36 PM EDT	Tornado Warning	CLE	Ashland, Lorain, Medina	39 min
Apr 11, 10:14 PM EDT	Special Marine Warning	CLE		2 hr
Apr 11, 11:17 PM EDT	Severe Thunderstorm Warning	CLE	Mahoning, Portage, Trumbull	42 min

Nearby

Tornado Warnings in Ohio, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.