Alert archive / Ohio / Tornado Warnings in 2009

Tornado Warning 6, NWS Cleveland, OH

June 19, 2009Knox County, Ohio

NWS Cleveland, OH issued this tornado warning at Jun 19, 2009, 6:39 PM EDT for Knox County, Ohio. It was in force for 33 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
Jun 19, 2009, 6:39 PM EDT (22:39 UTC)
Expired
Jun 19, 2009, 7:12 PM EDT
In force
33 min
Issued by
NWS Cleveland, OH
Area
Storm-based polygon

County Knox County, OH

The radar

The Cleveland radar (KCLE), 127 km from the middle of the area, began a volume at 22:39 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.7 hours before the alert went out and 166 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, Cncnati-Daytn, OH at 12:00Z on 2009-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3316 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, Cncnati-Daytn, OH at 12:00Z on 2009-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.1939587897Sfc1 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
3316 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
641 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.6
Supercell composite
2.8

Open this sounding in Storm Lab

The text

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

000 
WFUS51 KCLE 192239
TORCLE
OHC083-192330-
/O.NEW.KCLE.TO.W.0006.090619T2239Z-090619T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
639 PM EDT FRI JUN 19 2009

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN KNOX COUNTY IN NORTH CENTRAL OHIO

* UNTIL 730 PM EDT

* AT 638 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 10 MILES SOUTHEAST OF GAMBIER...OR 14 MILES
  SOUTHEAST OF MOUNT VERNON...AND MOVING SOUTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
RURAL SOUTHEASTERN KNOX COUNTY

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 HAIL AND STRONG WINDS TO THE NATIONAL WEATHER SERVICE
BY CALLING TOLL FREE...877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 4038 8226 4037 8218 4029 8218 4024 8219
      4023 8220 4023 8230
TIME...MOT...LOC 2239Z 293DEG 16KT 4028 8225

$$

LAPLANTE
2 follow-up statements
000 
WWUS51 KCLE 192251
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
651 PM EDT FRI JUN 19 2009

OHC083-192330-
/O.CON.KCLE.TO.W.0006.000000T0000Z-090619T2330Z/
KNOX OH-
651 PM EDT FRI JUN 19 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM EDT FOR
SOUTHEASTERN KNOX COUNTY...

AT 649 PM EDT...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH STRONG ROTATION. THIS TORNADO WAS LOCATED
OVER SOUTHEASTERN KNOX COUNTY...OR 17 MILES SOUTHEAST OF MOUNT
VERNON...MOVING SOUTHEAST AT 20 MPH.

LOCATIONS NEAR THE PATH OF THE TORNADO INCLUDE....

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4038 8226 4037 8218 4029 8218 4024 8219
      4023 8220 4023 8230
TIME...MOT...LOC 2251Z 293DEG 16KT 4026 8219

$$

WILLARD
000 
WWUS51 KCLE 192312
SVSCLE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
712 PM EDT FRI JUN 19 2009

OHC083-192322-
/O.CAN.KCLE.TO.W.0006.000000T0000Z-090619T2330Z/
KNOX OH-
712 PM EDT FRI JUN 19 2009

...THE TORNADO WARNING FOR SOUTHEASTERN KNOX COUNTY IS CANCELLED...

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

LAT...LON 4038 8226 4037 8218 4029 8218 4024 8219
      4023 8220 4023 8230
TIME...MOT...LOC 2312Z 293DEG 16KT 4022 8208

$$

KIELTYKA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 10:24 AM EDTFlash Flood WatchCLEAshland, Crawford, Cuyahoga, Erie, Hancock, Holmes and 18 more17 hr
Jun 19, 5:37 PM EDTSevere Thunderstorm WarningCLEAshland, Richland46 min
Jun 19, 6:09 PM EDTSevere Thunderstorm WarningCLEHolmes, Knox, Wayne51 min
Jun 19, 6:30 PM EDTTornado WarningCLEHolmes27 min
Jun 19, 6:34 PM EDTSevere Thunderstorm WarningCLEStark24 min

Nearby

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