Alert archive / Ohio / Mesoscale Discussions in 2003

Mesoscale Discussion 1688

July 7, 200342 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jul 7, 2003, 9:30 PM EDT for 42 counties in Ohio. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued
Jul 7, 2003, 9:30 PM EDT (01:30 UTC)
Expired
Jul 7, 2003, 10:30 PM EDT
In force
60 min
Issued by
the Storm Prediction Center
All 42 counties

Adams County, OH, Ashland County, OH, Athens County, OH, Carroll County, OH, Coshocton County, OH, Crawford County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Franklin County, OH, Gallia County, OH, Guernsey County, OH, Hocking County, OH, Holmes County, OH, Huron County, OH, Jackson County, OH, Knox County, OH, Lawrence County, OH, Licking County, OH, Lorain County, OH, Marion County, OH, Medina County, OH, Meigs 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, Richland County, OH, Ross County, OH, Sandusky County, OH, Scioto County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Tuscarawas County, OH, Vinton County, OH, Washington County, OH, Wayne County, OH

The radar

The Cincinnati radar (KILN), 115 km from the middle of the area, began a volume at 01:30 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

Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.5 hours before the alert went out and 113 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, Cncnati-Daytn, OH at 00:00Z on 2003-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2731 joules per kilogram.LCLEL10008507005003002001001 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, Cncnati-Daytn, OH at 00:00Z on 2003-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 99 square meters per square second.193958Sfc1 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
2731 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1167 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
99 m²/s²
0-3 km storm-relative helicity
161 m²/s²
Significant tornado parameter
1.1
Supercell composite
11.1

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
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, 6:06 AM EDTMesoscale DiscussionSPCAthens, Belmont, Carroll, Columbiana, Coshocton, Cuyahoga and 21 more114 min
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

Nearby

Mesoscale Discussions in Ohio, 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.