Alert archive / Ohio / Severe Thunderstorm Watches in 2017

Severe Thunderstorm Watch 366

June 23, 20175 states

The Storm Prediction Center issued this severe thunderstorm watch at Jun 23, 2017, 2:20 PM EDT for 5 states. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued: Jun 23, 2017, 2:20 PM EDT (18:20 UTC)
Expired: Jun 23, 2017, 10:00 PM EDT
In force: 8 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 83 counties

Boyd County, KY, Bracken County, KY, Carter County, KY, Greenup County, KY, Lewis County, KY, Mason County, KY, Pendleton County, KY, Robertson County, KY, Garrett County, MD, Adams County, OH, Athens County, OH, Belmont County, OH, Brown County, OH, Clermont County, OH, Fairfield County, OH, Gallia County, OH, Guernsey County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Jackson County, OH, Jefferson County, OH, Lawrence County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Vinton County, OH, Washington County, OH, Adams County, PA, Allegheny County, PA, Bedford County, PA, Blair County, PA, Cambria County, PA, Cumberland County, PA, Dauphin County, PA, Fayette County, PA, Franklin County, PA, Fulton County, PA, Greene County, PA, Huntingdon County, PA, Indiana County, PA, Juniata County, PA, Lancaster County, PA, Lebanon County, PA, Mifflin County, PA, Northumberland County, PA, Perry County, PA, Schuylkill County, PA, Snyder County, PA, Somerset County, PA, Washington County, PA, Westmoreland County, PA, York County, PA, Barbour County, WV, Brooke County, WV, Calhoun County, WV, Doddridge County, WV, Gilmer County, WV, Harrison County, WV, Jackson County, WV, Lewis County, WV, Marion County, WV, Marshall County, WV, Mason County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Preston County, WV, Ritchie County, WV, Roane County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV

The radar

The Pittsburgh radar (KPBZ), 136 km from the middle of the area, began a volume at 18:19 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 20%
One or more EF2 to EF5 tornadoes: 5%
Ten or more severe wind reports: 40%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 10%
One or more hailstones of 2 inches or more: 5%
Six or more combined severe hail and wind reports: 70%

Warnings issued inside it

46 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Jun 23, 2:40 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Huntingdon	65 min
Jun 23, 2:47 PM EDT	Tornado Warning	PBZ	Washington	28 min
Jun 23, 2:56 PM EDT	Flash Flood Warning	PBZ	Allegheny	3 hr
Jun 23, 3:09 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	36 min
Jun 23, 3:20 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Perry	40 min
Jun 23, 3:27 PM EDT	Flash Flood Warning	ILN	Brown, Clinton, Fayette, Highland, Ross	3 hr
Jun 23, 3:35 PM EDT	Flash Flood Warning	ILN	Clermont, Hamilton, Warren	3 hr
Jun 23, 3:40 PM EDT	Flash Flood Warning	PBZ	Washington	6 hr
Jun 23, 3:47 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Washington, Westmoreland	43 min
Jun 23, 3:56 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Perry, York	64 min
Jun 23, 3:59 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	46 min
Jun 23, 4:04 PM EDT	Flash Flood Warning Emergency	PBZ	Indiana	6 hr
Jun 23, 4:25 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	65 min
Jun 23, 4:27 PM EDT	Flash Flood Warning	PBZ	Fayette, Greene	8 hr
Jun 23, 4:30 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Westmoreland	30 min
Jun 23, 4:31 PM EDT	Flash Flood Warning	ILN	Highland, Pike, Ross	3 hr
Jun 23, 4:35 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, York	55 min
Jun 23, 4:38 PM EDT	Flash Flood Warning	PBZ	Westmoreland	8 hr
Jun 23, 4:40 PM EDT	Tornado Warning	PBZ	Greene	35 min
Jun 23, 4:46 PM EDT	Severe Thunderstorm Warning	PBZ	Monroe	44 min
Jun 23, 4:57 PM EDT	Flash Flood Warning	ILN	Brown, Clermont, Highland	3 hr
Jun 23, 5:00 PM EDT	Flash Flood Warning	RLX	Athens, Jackson, Morgan, Perry, Vinton, Washington	13 hr
Jun 23, 5:21 PM EDT	Flash Flood Warning	ILN	Bracken	3 hr
Jun 23, 5:27 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	33 min
Jun 23, 5:29 PM EDT	Severe Thunderstorm Warning	PBZ	Garrett	61 min
Jun 23, 5:35 PM EDT	Tornado Warning	PBZ	Fayette, Greene	25 min
Jun 23, 5:53 PM EDT	Flash Flood Warning	ILN	Gallatin, Grant, Owen, Pendleton	3 hr
Jun 23, 6:08 PM EDT	Flash Flood Warning	PBZ	Marshall	4 hr
Jun 23, 6:10 PM EDT	Flash Flood Warning	PBZ	Guernsey	4 hr
Jun 23, 6:17 PM EDT	Flash Flood Warning	ILN	Bracken, Lewis, Mason	3 hr
Jun 23, 6:20 PM EDT	Tornado Warning	RLX	Gallia, Meigs	25 min
Jun 23, 6:27 PM EDT	Tornado Warning	RLX	Wirt, Wood	33 min
Jun 23, 6:33 PM EDT	Severe Thunderstorm Warning	PBZ	Garrett	42 min
Jun 23, 6:44 PM EDT	Tornado Warning	RLX	Meigs	16 min
Jun 23, 6:56 PM EDT	Tornado Warning	RLX	Boyd, Carter, Lawrence	22 min
Jun 23, 7:12 PM EDT	Flash Flood Warning	ILN	Bracken, Lewis, Mason, Robertson	5 hr
Jun 23, 7:20 PM EDT	Tornado Warning	PBZ	Marion, Monongalia, Preston	40 min
Jun 23, 7:31 PM EDT	Flash Flood Warning	RLX	Athens, Gallia, Jackson, Meigs, Vinton, Washington	10 hr
Jun 23, 7:32 PM EDT	Tornado Warning	RLX	Doddridge, Harrison, Ritchie	28 min
Jun 23, 7:49 PM EDT	Flash Flood Warning	ILN	Lewis	3 hr
Jun 23, 8:00 PM EDT	Flash Flood Warning	RLX	Boyd, Carter, Greenup, Lawrence	7 hr
Jun 23, 8:05 PM EDT	Tornado Warning	RLX	Jackson	10 min
Jun 23, 8:26 PM EDT	Flash Flood Warning	RLX	Meigs	4 hr
Jun 23, 8:55 PM EDT	Flash Flood Warning	PBZ	Fayette, Greene	4 hr
Jun 23, 8:56 PM EDT	Severe Thunderstorm Warning	PBZ	Garrett	64 min
Jun 23, 9:24 PM EDT	Flash Flood Warning	RLX	Calhoun, Doddridge, Gilmer, Harrison, Lewis, Ritchie and 2 more	3 hr

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 12:00Z, 6.3 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: 36 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 520 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 263 m²/s²
0-3 km storm-relative helicity: 188 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 23, 1:15 PM EDT	Mesoscale Discussion	SPC	Boone, Bracken, Campbell, Gallatin, Greenup, Kenton and 3 more	2 hr
Jun 23, 1:39 PM EDT	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Bath, Bell and 66 more	2 hr
Jun 23, 3:32 PM EDT	Tornado Watch	SPC	Adair, Allen, Barren, Bath, Bell, Bourbon and 51 more	6 hr
Jun 23, 4:53 PM EDT	Mesoscale Discussion	SPC	Bracken, Greenup, Harrison, Lewis, Mason, Pendleton and 1 more	2 hr
Jun 23, 5:50 PM EDT	Mesoscale Discussion	SPC	Adair, Bath, Bell, Bourbon, Boyd, Boyle and 54 more	115 min
Jun 23, 3:35 PM EDT	Mesoscale Discussion	SPC	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 6 more	115 min
Jun 23, 5:09 PM EDT	Severe Thunderstorm Watch	SPC	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	4 hr

Nearby

Severe Thunderstorm Watches in Ohio, 2017 Severe Thunderstorm Watches in Pennsylvania, 2017 Severe Thunderstorm Watches in West Virginia, 2017 Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.