Alert archive / Ohio / Severe Thunderstorm Watches in 2007

Severe Thunderstorm Watch 418

June 19, 20074 states

The Storm Prediction Center issued this severe thunderstorm watch at Jun 19, 2007, 12:19 PM EDT for 4 states. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: Jun 19, 2007, 12:19 PM EDT (16:19 UTC)
Expired: Jun 19, 2007, 9:00 PM EDT
In force: 9 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 60 kt

All 104 counties

Allegany County, NY, Broome County, NY, Cattaraugus County, NY, Cayuga County, NY, Chautauqua County, NY, Chemung County, NY, Chenango County, NY, Cortland County, NY, Delaware County, NY, Erie County, NY, Genesee County, NY, Jefferson County, NY, Lewis County, NY, Livingston County, NY, Madison County, NY, Monroe County, NY, Niagara County, NY, Oneida County, NY, Onondaga County, NY, Ontario County, NY, Orleans County, NY, Oswego County, NY, Otsego County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Wayne County, NY, Wyoming County, NY, Yates County, NY, Ashland County, OH, Ashtabula County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Geauga County, OH, Guernsey County, OH, Hancock County, OH, Hardin County, OH, Harrison County, OH, Holmes County, OH, Huron County, OH, Jefferson County, OH, Knox County, OH, Lake County, OH, Licking County, OH, Lorain County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Morrow County, OH, Muskingum County, OH, Ottawa County, OH, Pickaway County, OH, Portage County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Wayne County, OH, Wood County, OH, Wyandot County, OH, Armstrong County, PA, Beaver County, PA, Bradford County, PA, Butler County, PA, Cameron County, PA, Centre County, PA, Clarion County, PA, Clearfield County, PA, Clinton County, PA, Crawford County, PA, Elk County, PA, Erie County, PA, Forest County, PA, Jefferson County, PA, Lackawanna County, PA, Lawrence County, PA, Luzerne County, PA, Lycoming County, PA, McKean County, PA, Mercer County, PA, Potter County, PA, Sullivan County, PA, Susquehanna County, PA, Tioga County, PA, Venango County, PA, Warren County, PA, Wayne County, PA, Wyoming County, PA, Hancock County, WV

The radar

The Pittsburgh radar (KPBZ), 127 km from the middle of the area, began a volume at 16:19 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: 50%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 30%
One or more hailstones of 2 inches or more: 20%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 19, 12:21 PM EDT	Severe Thunderstorm Warning	BUF	Allegany	54 min
Jun 19, 12:25 PM EDT	Severe Thunderstorm Warning	CLE	Hancock, Wood	51 min
Jun 19, 12:30 PM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga	45 min
Jun 19, 12:41 PM EDT	Severe Thunderstorm Warning	BUF	Livingston	41 min
Jun 19, 12:45 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	60 min
Jun 19, 1:22 PM EDT	Severe Thunderstorm Warning	CLE	Erie, Huron	53 min
Jun 19, 1:34 PM EDT	Severe Thunderstorm Warning	BUF	Wayne	56 min
Jun 19, 1:38 PM EDT	Severe Thunderstorm Warning	CTP	Potter	37 min
Jun 19, 1:42 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga	33 min
Jun 19, 1:43 PM EDT	Severe Thunderstorm Warning	CLE	Lorain	62 min
Jun 19, 1:52 PM EDT	Severe Thunderstorm Warning	BGM	Schuyler, Seneca	53 min
Jun 19, 2:00 PM EDT	Severe Thunderstorm Warning	BGM	Madison, Oneida	45 min
Jun 19, 2:00 PM EDT	Severe Thunderstorm Warning	ILN	Fairfield	45 min
Jun 19, 2:10 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming	65 min
Jun 19, 2:11 PM EDT	Severe Thunderstorm Warning	BGM	Onondaga	64 min
Jun 19, 2:11 PM EDT	Severe Thunderstorm Warning	CLE	Cuyahoga	64 min
Jun 19, 2:15 PM EDT	Severe Thunderstorm Warning	CLE	Erie	60 min
Jun 19, 2:18 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	57 min
Jun 19, 2:21 PM EDT	Severe Thunderstorm Warning	BGM	Tompkins	39 min
Jun 19, 2:26 PM EDT	Severe Thunderstorm Warning	ILN	Delaware	29 min
Jun 19, 2:27 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego	48 min
Jun 19, 2:28 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga	32 min
Jun 19, 2:38 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango	52 min
Jun 19, 2:40 PM EDT	Severe Thunderstorm Warning	CLE	Lake	65 min
Jun 19, 2:42 PM EDT	Severe Thunderstorm Warning	ILN	Delaware	48 min
Jun 19, 2:43 PM EDT	Severe Thunderstorm Warning	BGM	Cortland	32 min
Jun 19, 2:49 PM EDT	Severe Thunderstorm Warning	CLE	Medina	56 min
Jun 19, 2:51 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	54 min
Jun 19, 2:52 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	53 min
Jun 19, 2:53 PM EDT	Severe Thunderstorm Warning	CLE	Ashland	50 min
Jun 19, 2:57 PM EDT	Severe Thunderstorm Warning	CTP	Sullivan	48 min
Jun 19, 3:02 PM EDT	Severe Thunderstorm Warning	CTP	Warren	58 min
Jun 19, 3:07 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	38 min
Jun 19, 3:07 PM EDT	Severe Thunderstorm Warning	CLE	Wayne	53 min
Jun 19, 3:08 PM EDT	Severe Thunderstorm Warning	BGM	Cortland	52 min
Jun 19, 3:11 PM EDT	Severe Thunderstorm Warning	CLE	Ashtabula	67 min
Jun 19, 3:11 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming	49 min
Jun 19, 3:13 PM EDT	Severe Thunderstorm Warning	BGM	Onondaga	47 min
Jun 19, 3:13 PM EDT	Severe Thunderstorm Warning	CLE	Geauga, Lake	62 min
Jun 19, 3:19 PM EDT	Severe Thunderstorm Warning	CLE	Summit	26 min
Jun 19, 3:20 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	55 min
Jun 19, 3:23 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus	67 min
Jun 19, 3:28 PM EDT	Severe Thunderstorm Warning	BGM	Madison	62 min
Jun 19, 3:32 PM EDT	Tornado Warning	BUF	Chautauqua	28 min
Jun 19, 3:33 PM EDT	Severe Thunderstorm Warning	PBZ	Muskingum	72 min
Jun 19, 3:35 PM EDT	Severe Thunderstorm Warning	BGM	Tioga	40 min
Jun 19, 3:38 PM EDT	Severe Thunderstorm Warning	CLE	Summit	47 min
Jun 19, 3:41 PM EDT	Severe Thunderstorm Warning	CLE	Portage	56 min
Jun 19, 3:43 PM EDT	Severe Thunderstorm Warning	BGM	Chenango	47 min
Jun 19, 3:43 PM EDT	Severe Thunderstorm Warning	BUF	Erie	62 min
Jun 19, 3:44 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	76 min
Jun 19, 3:47 PM EDT	Severe Thunderstorm Warning	BGM	Otsego	58 min
Jun 19, 3:58 PM EDT	Flash Flood Warning	CTP	Lycoming	3 hr
Jun 19, 4:00 PM EDT	Severe Thunderstorm Warning	CLE	Stark	60 min
Jun 19, 4:00 PM EDT	Severe Thunderstorm Warning	PBZ	Guernsey	60 min
Jun 19, 4:07 PM EDT	Severe Thunderstorm Warning	CLE	Trumbull	68 min
Jun 19, 4:08 PM EDT	Severe Thunderstorm Warning	BGM	Delaware	67 min
Jun 19, 4:15 PM EDT	Severe Thunderstorm Warning	BGM	Bradford	24 min
Jun 19, 4:17 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	58 min
Jun 19, 4:20 PM EDT	Severe Thunderstorm Warning	CLE	Mahoning	55 min
Jun 19, 4:30 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Wyoming	69 min
Jun 19, 4:32 PM EDT	Severe Thunderstorm Warning	BGM	Chenango	28 min
Jun 19, 4:32 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Northumberland	58 min
Jun 19, 4:34 PM EDT	Severe Thunderstorm Warning	BUF	Niagara	56 min
Jun 19, 4:36 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	54 min
Jun 19, 4:45 PM EDT	Severe Thunderstorm Warning	BUF	Erie	30 min
Jun 19, 4:47 PM EDT	Severe Thunderstorm Warning	BUF	Orleans	58 min
Jun 19, 5:00 PM EDT	Severe Thunderstorm Warning	BGM	Broome	30 min
Jun 19, 5:00 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	90 min
Jun 19, 5:06 PM EDT	Tornado Warning	CTP	Lycoming	24 min
Jun 19, 5:09 PM EDT	Severe Thunderstorm Warning	BUF	Livingston	66 min
Jun 19, 5:10 PM EDT	Severe Thunderstorm Warning	PBZ	Harrison	65 min
Jun 19, 5:15 PM EDT	Severe Thunderstorm Warning	PBZ	Lawrence	60 min
Jun 19, 5:19 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne	41 min
Jun 19, 5:35 PM EDT	Severe Thunderstorm Warning	PBZ	Venango	51 min
Jun 19, 5:38 PM EDT	Severe Thunderstorm Warning	BGM	Delaware	67 min
Jun 19, 5:58 PM EDT	Severe Thunderstorm Warning	BUF	Wayne	77 min
Jun 19, 5:58 PM EDT	Severe Thunderstorm Warning	BGM	Luzerne, Wyoming	32 min
Jun 19, 6:07 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Huntingdon	53 min
Jun 19, 6:07 PM EDT	Severe Thunderstorm Warning	PBZ	Brooke, Hancock	23 min
Jun 19, 6:19 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna	41 min
Jun 19, 6:25 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne	50 min
Jun 19, 6:45 PM EDT	Severe Thunderstorm Warning	BGM	Delaware	30 min
Jun 19, 6:52 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong	53 min
Jun 19, 6:55 PM EDT	Severe Thunderstorm Warning	PBZ	Butler	38 min
Jun 19, 7:01 PM EDT	Flash Flood Warning	BGM	Delaware	6 hr
Jun 19, 7:05 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Oswego	40 min
Jun 19, 7:21 PM EDT	Severe Thunderstorm Warning	PBZ	Jefferson	54 min
Jun 19, 7:34 PM EDT	Severe Thunderstorm Warning	CTP	Clearfield	56 min
Jun 19, 8:00 PM EDT	Severe Thunderstorm Warning	BGM	Otsego	45 min
Jun 19, 8:08 PM EDT	Tornado Warning	CTP	Clearfield	22 min
Jun 19, 8:18 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clinton	57 min

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 (KPIT), launched 12:00Z, 4.3 hours before the alert went out and 140 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: 378 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1595 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 79 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 19, 12:01 PM EDT	Mesoscale Discussion	SPC	Allegany, Broome, Cattaraugus, Cayuga, Chautauqua, Chemung and 23 more	29 min
Jun 19, 3:02 PM EDT	Severe Thunderstorm Watch	SPC	Sullivan	8 hr
Jun 19, 3:03 PM EDT	Mesoscale Discussion	SPC	Albany, Allegany, Broome, Cattaraugus, Cayuga, Chautauqua and 48 more	27 min
Jun 19, 3:23 PM EDT	Severe Thunderstorm Watch	SPC	Albany, Clinton, Columbia, Dutchess, Essex, Franklin and 13 more	6 hr
Jun 19, 7:38 PM EDT	Mesoscale Discussion	SPC	Albany, Broome, Cayuga, Chemung, Chenango, Columbia and 31 more	67 min
Jun 19, 2:15 PM EDT	Mesoscale Discussion	SPC	Belmont, Monroe, Morgan, Noble, Washington	30 min

Nearby

Severe Thunderstorm Watches in Ohio, 2007 Severe Thunderstorm Watches in New York, 2007 Severe Thunderstorm Watches in Pennsylvania, 2007 Every severe thunderstorm watch in 2007

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.