Alert archive / Ohio / Severe Thunderstorm Watches in 2013

Severe Thunderstorm Watch 302

June 12, 20135 states

The Storm Prediction Center issued this severe thunderstorm watch at Jun 12, 2013, 11:53 PM EDT for 5 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jun 12, 2013, 11:53 PM EDT (03:53 UTC)
Expired
Jun 13, 2013, 7:00 AM EDT
In force
7 hr
Issued by
the Storm Prediction Center
Particularly dangerous situation
Yes
Largest hail expected
2 in
Strongest gust expected
70 kt
All 110 counties

Greenup County, KY, Garrett County, MD, Adams County, OH, Ashland County, OH, Ashtabula County, OH, Athens County, OH, Belmont County, OH, Brown County, OH, Butler County, OH, Carroll County, OH, Clermont County, OH, Clinton County, OH, Columbiana County, OH, Coshocton County, OH, Cuyahoga County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Gallia County, OH, Geauga County, OH, Greene County, OH, Guernsey County, OH, Hamilton County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Holmes County, OH, Jackson County, OH, Jefferson County, OH, Knox County, OH, Lake County, OH, Lawrence County, OH, Licking County, OH, Lorain County, OH, Madison County, OH, Mahoning County, OH, Medina County, OH, Meigs County, OH, Monroe County, OH, Montgomery County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Portage County, OH, Preble County, OH, Richland County, OH, Ross County, OH, Scioto County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Vinton County, OH, Warren County, OH, Washington County, OH, Wayne County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Crawford County, PA, Erie County, PA, Fayette County, PA, Forest County, PA, Greene County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Washington County, PA, Westmoreland County, PA, Barbour County, WV, Braxton County, WV, Brooke County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Gilmer County, WV, Hancock County, WV, Harrison County, WV, Jackson County, WV, Kanawha 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, Putnam County, WV, Randolph County, WV, Ritchie County, WV, Roane County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Upshur County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV

The radar

The Pittsburgh radar (KPBZ), 107 km from the middle of the area, began a volume at 03:54 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
20%
Ten or more severe wind reports
95%
One or more gusts of 65 knots or more
90%
Ten or more severe hail reports
70%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 13, 12:05 AM EDTSevere Thunderstorm WarningCLEKnox40 min
Jun 13, 12:13 AM EDTSevere Thunderstorm WarningILNAuglaize, Hardin, Logan, Union47 min
Jun 13, 12:13 AM EDTSevere Thunderstorm WarningRLXBarbour, Harrison, Taylor47 min
Jun 13, 12:18 AM EDTSevere Thunderstorm WarningRLXBarbour, Randolph42 min
Jun 13, 12:25 AM EDTSevere Thunderstorm WarningILNAuglaize, Champaign, Clark, Darke, Logan, Mercer and 3 more50 min
Jun 13, 12:30 AM EDTFlash Flood WarningCLEKnox6 hr
Jun 13, 12:52 AM EDTSevere Thunderstorm WarningILNChampaign, Delaware, Franklin, Hardin, Logan, Madison and 1 more38 min
Jun 13, 1:05 AM EDTSevere Thunderstorm WarningRLXBarbour, Taylor25 min
Jun 13, 1:08 AM EDTTornado WarningILNDelaware, Union37 min
Jun 13, 1:09 AM EDTSevere Thunderstorm WarningPBZGarrett66 min
Jun 13, 1:10 AM EDTSevere Thunderstorm WarningCLEErie, Huron, Morrow, Richland50 min
Jun 13, 1:26 AM EDTSevere Thunderstorm WarningILNDelaware, Fairfield, Franklin, Licking, Madison64 min
Jun 13, 1:29 AM EDTSevere Thunderstorm WarningCLELorain61 min
Jun 13, 1:34 AM EDTSevere Thunderstorm WarningCLEAshland, Knox41 min
Jun 13, 1:44 AM EDTSevere Thunderstorm WarningCLECuyahoga, Medina61 min
Jun 13, 1:52 AM EDTSevere Thunderstorm WarningPBZBelmont, Carroll, Coshocton, Guernsey, Harrison, Monroe and 3 more68 min
Jun 13, 1:56 AM EDTSevere Thunderstorm WarningCLEHolmes, Wayne49 min
Jun 13, 2:04 AM EDTSevere Thunderstorm WarningRLXMorgan, Perry56 min
Jun 13, 2:18 AM EDTSevere Thunderstorm WarningCLEGeauga, Lake, Portage, Stark, Summit57 min
Jun 13, 2:34 AM EDTFlash Flood WarningPBZBrooke, Ohio4 hr
Jun 13, 2:52 AM EDTSevere Thunderstorm WarningPBZCarroll, Columbiana, Harrison, Jefferson, Tuscarawas68 min
Jun 13, 2:54 AM EDTSevere Thunderstorm WarningCLEAshtabula, Mahoning, Trumbull66 min
Jun 13, 2:54 AM EDTSevere Thunderstorm WarningRLXAthens, Morgan, Perry, Washington36 min
Jun 13, 3:18 AM EDTSevere Thunderstorm WarningPBZButler, Lawrence, Mercer57 min
Jun 13, 3:25 AM EDTSevere Thunderstorm WarningPBZColumbiana65 min
Jun 13, 3:28 AM EDTSevere Thunderstorm WarningCLECrawford, Erie62 min
Jun 13, 3:51 AM EDTSevere Thunderstorm WarningPBZArmstrong, Butler, Clarion, Forest, Mercer, Venango54 min
Jun 13, 4:03 AM EDTSevere Thunderstorm WarningPBZAllegheny, Armstrong, Butler, Westmoreland57 min
Jun 13, 4:12 AM EDTSevere Thunderstorm WarningPBZGreene, Washington48 min
Jun 13, 4:27 AM EDTSevere Thunderstorm WarningPBZWashington, Westmoreland48 min
Jun 13, 4:43 AM EDTSevere Thunderstorm WarningPBZAllegheny, Armstrong, Indiana, Jefferson, Westmoreland77 min
Jun 13, 5:27 AM EDTSevere Thunderstorm WarningRLXMeigs33 min
Jun 13, 5:58 AM EDTSevere Thunderstorm WarningRLXCalhoun, Jackson, Roane, Wirt47 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 00:00Z, 3.9 hours before the alert went out and 112 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, Pittsburgh, PA at 00:00Z on 2013-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1421 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 00:00Z on 2013-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 195 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
1421 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
1057 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
195 m²/s²
0-3 km storm-relative helicity
330 m²/s²
Significant tornado parameter
1.7
Supercell composite
10.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 13, 5:27 AM EDTMesoscale DiscussionSPCGreenup2 hr
Jun 13, 8:32 AM EDTMesoscale DiscussionSPCAdair, Anderson, Bath, Bell, Boone, Bourbon and 82 more58 min
Jun 13, 9:08 AM EDTSevere Thunderstorm WatchSPCAdair, Anderson, Bath, Bell, Boone, Bourbon and 81 more5 hr
Jun 13, 11:59 AM EDTMesoscale DiscussionSPCAdair, Allen, Barren, Bath, Bell, Bourbon and 65 more61 min
Jun 12, 11:22 PM EDTMesoscale DiscussionSPCAllegany, Garrett53 min
Jun 13, 2:40 AM EDTMesoscale DiscussionSPCAllegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 18 more2 hr
Jun 13, 3:58 AM EDTSevere Thunderstorm WatchSPCAllegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 7 more7 hr
Jun 13, 7:30 AM EDTSevere Thunderstorm WatchSPCCaroline, Cecil, Kent, Queen Anne's, Talbot4 hr
Jun 13, 8:10 AM EDTMesoscale DiscussionSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 13 more95 min
Jun 13, 11:38 AM EDTMesoscale DiscussionSPCAnne Arundel, Calvert, Caroline, Charles, Dorchester, Montgomery and 7 more67 min
Jun 13, 12:19 PM EDTSevere Thunderstorm WatchSPCAnne Arundel, Baltimore, Calvert, Caroline, Charles, Harford and 8 more7 hr
Jun 13, 2:08 PM EDTSevere Thunderstorm Watch PDSSPCDorchester, Somerset, Wicomico, Worcester8 hr
Jun 13, 2:20 PM EDTMesoscale DiscussionSPCAnne Arundel, Howard, Kent, Montgomery, Prince George's, City of Baltimore55 min
Jun 13, 4:22 PM EDTMesoscale DiscussionSPCAnne Arundel, Calvert, Caroline, Charles, Dorchester, Kent and 7 more53 min
Jun 12, 8:05 PM EDTMesoscale DiscussionSPCAshland, Belmont, Carroll, Coshocton, Crawford, Delaware and 15 more55 min
Jun 12, 9:47 PM EDTMesoscale DiscussionSPCAllen, Ashland, Auglaize, Butler, Champaign, Clark and 39 more88 min
Jun 13, 12:50 AM EDTMesoscale DiscussionSPCAllen, Ashland, Auglaize, Champaign, Clark, Crawford and 32 more85 min

Nearby

Severe Thunderstorm Watches in Ohio, 2013Severe Thunderstorm Watches in West Virginia, 2013Severe Thunderstorm Watches in Pennsylvania, 2013Every severe thunderstorm watch in 2013

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.