Alert archive / Ohio / Mesoscale Discussions in 2003

Mesoscale Discussion 1699

July 8, 200327 counties in Ohio; 12 counties in Pennsylvania; 19 counties in West Virginia

The Storm Prediction Center issued this mesoscale discussion at Jul 8, 2003, 6:06 AM EDT for 27 counties in Ohio; 12 counties in Pennsylvania; 19 counties in West Virginia. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued
Jul 8, 2003, 6:06 AM EDT (10:06 UTC)
Expired
Jul 8, 2003, 8:00 AM EDT
In force
114 min
Issued by
the Storm Prediction Center
All 58 counties

Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Cuyahoga County, OH, Fairfield County, OH, Geauga County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Holmes County, OH, Jefferson County, OH, Mahoning County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Portage County, OH, Ross County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Vinton County, OH, Washington County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Fayette County, PA, Greene County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Washington County, PA, Westmoreland County, PA, Barbour County, WV, Brooke County, WV, Doddridge County, WV, Hancock County, WV, Harrison County, WV, Lewis County, WV, Marion County, WV, Marshall County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Preston County, WV, Ritchie County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Upshur County, WV, Wetzel County, WV, Wood County, WV

The radar

The Pittsburgh radar (KPBZ), 129 km from the middle of the area, began a volume at 10:06 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 nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 10.1 hours before the alert went out and 136 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 2003-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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 2003-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 148 square meters per square second.1939Sfc1 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
2 J/kg
Mixed-layer CIN
-210 J/kg
Mixed-layer LCL
903 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
148 m²/s²
0-3 km storm-relative helicity
176 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Jul 7, 9:30 PM EDTMesoscale DiscussionSPCAdams, Ashland, Athens, Carroll, Coshocton, Crawford and 36 more60 min
Jul 7, 9:55 PM EDTSevere Thunderstorm WatchSPCAshland, Ashtabula, Athens, Belmont, Carroll, Columbiana and 50 more3 hr
Jul 7, 10:13 PM EDTMesoscale DiscussionSPCAllen, Auglaize, Champaign, Clark, Darke, Defiance and 13 more62 min
Jul 8, 12:00 AM EDTSevere Thunderstorm WatchSPCAllen, Auglaize, Champaign, Clark, Darke, Defiance and 18 more5 hr
Jul 8, 12:50 AM EDTMesoscale DiscussionSPCAllen, Auglaize, Champaign, Clark, Darke, Defiance and 18 more85 min
Jul 8, 12:57 AM EDTMesoscale DiscussionSPCAshland, Athens, Belmont, Carroll, Columbiana, Coshocton and 49 more63 min
Jul 8, 2:57 AM EDTMesoscale DiscussionSPCAshland, Athens, Belmont, Carroll, Champaign, Clark and 44 more63 min
Jul 8, 3:20 AM EDTSevere Thunderstorm WatchSPCAshland, Athens, Belmont, Carroll, Champaign, Clark and 51 more6 hr
Jul 8, 11:05 AM EDTMesoscale DiscussionSPCAllen, Auglaize, Darke, Defiance, Fulton, Hancock and 9 more25 min
Jul 8, 11:25 AM EDTSevere Thunderstorm WatchSPCAllen, Crawford, Defiance, Fulton, Hancock, Henry and 10 more6 hr
Jul 8, 1:04 PM EDTMesoscale DiscussionSPCAllen, Crawford, Defiance, Fulton, Hancock, Hardin and 11 more56 min
Jul 8, 1:25 PM EDTMesoscale DiscussionSPCAdams, Brown, Butler, Clermont, Clinton, Fairfield and 17 more95 min
Jul 8, 2:25 PM EDTSevere Thunderstorm WatchSPCAdams, Auglaize, Brown, Butler, Champaign, Clark and 24 more6 hr
Jul 8, 3:02 PM EDTMesoscale DiscussionSPCAshland, Ashtabula, Athens, Belmont, Carroll, Columbiana and 36 more28 min
Jul 8, 3:15 PM EDTSevere Thunderstorm WatchSPCAshland, Ashtabula, Athens, Belmont, Carroll, Columbiana and 35 more5 hr
Jul 8, 3:30 PM EDTMesoscale DiscussionSPCAllen, Crawford, Defiance, Fulton, Hancock, Henry and 9 more30 min
Jul 8, 4:02 PM EDTMesoscale DiscussionSPCAdams, Auglaize, Brown, Butler, Champaign, Clark and 23 more88 min
Jul 8, 4:20 PM EDTSevere Thunderstorm WatchSPCAllen, Crawford, Defiance, Fulton, Hancock, Henry and 10 more4 hr
Jul 8, 5:05 PM EDTMesoscale DiscussionSPCAshland, Athens, Belmont, Carroll, Columbiana, Coshocton and 34 more115 min
Jul 8, 6:38 PM EDTMesoscale DiscussionSPCAdams, Allen, Auglaize, Brown, Butler, Champaign and 32 more37 min
Jul 8, 7:40 PM EDTSevere Thunderstorm WatchSPCAdams, Auglaize, Brown, Butler, Champaign, Clark and 24 more5 hr
Jul 8, 7:29 AM EDTMesoscale DiscussionSPCArmstrong, Fayette, Indiana, Somerset, Westmoreland61 min
Jul 7, 8:25 PM EDTSevere Thunderstorm WatchSPCBerkeley, Grant, Greenbrier, Hampshire, Hardy, Jefferson and 7 more5 hr
Jul 7, 10:32 PM EDTMesoscale DiscussionSPCBerkeley, Grant, Greenbrier, Hampshire, Hardy, Jefferson and 6 more58 min

Nearby

Mesoscale Discussions in Ohio, 2003Mesoscale Discussions in West Virginia, 2003Mesoscale Discussions in Pennsylvania, 2003Every mesoscale discussion in 2003

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.