Alert archive / Ohio / Mesoscale Discussions in 2013

Mesoscale Discussion 1053

June 12, 20134 states

The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2013, 11:22 PM EDT for 4 states. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued
Jun 12, 2013, 11:22 PM EDT (03:22 UTC)
Expired
Jun 13, 2013, 12:15 AM EDT
In force
53 min
Issued by
the Storm Prediction Center
All 87 counties

Allegany County, MD, Garrett County, MD, Ashland County, OH, Athens County, OH, Belmont County, OH, Carroll County, OH, Champaign County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Franklin County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Holmes County, OH, Huron County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Lorain County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Portage County, OH, Richland County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Tuscarawas County, OH, Union County, OH, Vinton County, OH, Washington County, OH, Wayne County, OH, Wyandot County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Fayette County, PA, Greene County, PA, Indiana County, PA, Lawrence County, PA, Somerset County, PA, Washington County, PA, Westmoreland County, PA, Barbour County, WV, Braxton County, WV, Brooke County, WV, Calhoun County, WV, Doddridge County, WV, Gilmer County, WV, Grant County, WV, Hampshire County, WV, Hancock County, WV, Hardy County, WV, Harrison County, WV, Lewis County, WV, Marion County, WV, Marshall County, WV, Mineral County, WV, Monongalia County, WV, Ohio County, WV, Pendleton County, WV, Pleasants County, WV, Preston County, WV, Randolph County, WV, Ritchie County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Upshur County, WV, Webster County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV

The radar

The Pittsburgh radar (KPBZ), 122 km from the middle of the area, began a volume at 03:22 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 3.4 hours before the alert went out and 122 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

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 12, 11:53 PM EDTSevere Thunderstorm Watch PDSSPCGarrett7 hr
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, 5:27 AM EDTMesoscale DiscussionSPCAllegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 18 more2 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, 11:59 AM EDTMesoscale DiscussionSPCGarrett61 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
Jun 13, 8:32 AM EDTMesoscale DiscussionSPCAdams, Brown, Butler, Clermont, Clinton, Fayette and 11 more58 min
Jun 13, 9:08 AM EDTSevere Thunderstorm WatchSPCAdams, Athens, Brown, Clermont, Fayette, Gallia and 11 more5 hr

Nearby

Mesoscale Discussions in Ohio, 2013Mesoscale Discussions in West Virginia, 2013Mesoscale Discussions in Pennsylvania, 2013Every mesoscale discussion 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.