Alert archive / Ohio / Tornado Warnings in 2017

Tornado Warning 5, NWS Cleveland, OH

July 22, 2017Knox County, Ohio

NWS Cleveland, OH issued this tornado warning at Jul 22, 2017, 7:23 AM EDT for Knox County, Ohio. It was in force for 23 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: Jul 22, 2017, 7:23 AM EDT (11:23 UTC)
Expired: Jul 22, 2017, 7:46 AM EDT
In force: 23 min
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Knox County, OH

The radar

The Cleveland radar (KCLE), 131 km from the middle of the area, began a volume at 11:25 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
Jul 22, 7:29 AM EDT	TSTM WND DMG	6 Sse Danville, OH	KNOX COUNTY SHERIFF DISPATCH REPORTED A LARGE TREE DOWNED ON US 36 JUST WEST OF THE COSHOCTON COUNTY LINE.

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, 11.4 hours before the alert went out and 160 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: 111 J/kg
Mixed-layer CIN: -126 J/kg
Mixed-layer LCL: 1423 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

925 
WFUS51 KCLE 221123
TORCLE
OHC083-221200-
/O.NEW.KCLE.TO.W.0005.170722T1123Z-170722T1200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Cleveland OH
723 AM EDT SAT JUL 22 2017

The National Weather Service in Cleveland has issued a

* Tornado Warning for...
  Southeastern Knox County in north central Ohio...

* Until 800 AM EDT
    
* At 723 AM EDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles southeast of Gambier, or 11 miles southeast of
  Mount Vernon, moving east at 65 mph.

  HAZARD...Tornado and quarter size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This tornadic thunderstorm will remain over mainly rural areas of
  southeastern Knox County, including the following locations:
  Martinsburg and Bladensburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4025 8239 4038 8239 4039 8219 4027 8219
      4025 8220 4024 8220 4024 8237
TIME...MOT...LOC 1123Z 270DEG 58KT 4031 8228 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Kosarik

1 follow-up statement

845 
WWUS51 KCLE 221146
SVSCLE

Severe Weather Statement
National Weather Service Cleveland OH
746 AM EDT SAT JUL 22 2017

OHC083-221155-
/O.CAN.KCLE.TO.W.0005.000000T0000Z-170722T1200Z/
Knox OH-
746 AM EDT SAT JUL 22 2017

...THE TORNADO WARNING FOR SOUTHEASTERN KNOX COUNTY IS CANCELLED...
        
The storm which prompted the warning has weakened below severe 
limits, and has moved east out of the warned area. Therefore, the 
warning has been cancelled. 

LAT...LON 4025 8239 4038 8239 4039 8219 4027 8219
      4025 8220 4024 8220 4024 8237
TIME...MOT...LOC 1145Z 270DEG 58KT 4031 8180 

$$

Kosarik

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 5:29 AM EDT	Special Weather Statement	CLE	Knox, Marion, Morrow	91 min
Jul 22, 6:10 AM EDT	Areal Flood Advisory	CLE	Marion	3 hr
Jul 22, 6:34 AM EDT	Areal Flood Advisory	CLE	Morrow	3 hr
Jul 22, 6:46 AM EDT	Severe Thunderstorm Warning	CLE	Morrow	29 min
Jul 22, 6:55 AM EDT	Severe Thunderstorm Warning	CLE	Knox	50 min
Jul 22, 7:43 AM EDT	Special Weather Statement	CLE	Holmes	47 min
Jul 22, 12:56 PM EDT	Flash Flood Warning	CLE	Ashtabula	5 hr
Jul 22, 1:14 PM EDT	Areal Flood Advisory	CLE	Trumbull	4 hr
Jul 22, 3:43 PM EDT	Special Weather Statement	CLE	Stark	62 min

Nearby

Tornado Warnings in Ohio, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.