Alert archive / Ohio / Mesoscale Discussions in 2003
Mesoscale Discussion 1677
The Storm Prediction Center issued this mesoscale discussion at Jul 7, 2003, 2:56 PM EDT for 48 counties in Ohio; 9 counties in Pennsylvania; 4 counties in West Virginia. It was in force for 94 min.
The area
The outline as issued.
The facts
- Issued
- Jul 7, 2003, 2:56 PM EDT (18:56 UTC)
- Expired
- Jul 7, 2003, 4:30 PM EDT
- In force
- 94 min
- Issued by
- the Storm Prediction Center
All 61 counties
Ashland County, OH, Belmont County, OH, Carroll County, OH, Champaign County, OH, Clark 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, Greene 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, Logan County, OH, Lorain County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Medina 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, Portage County, OH, Richland County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Wayne County, OH, Wyandot County, OH, Allegheny County, PA, Beaver County, PA, Butler County, PA, Crawford County, PA, Greene County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Washington County, PA, Brooke County, WV, Hancock County, WV, Marshall County, WV, Ohio County, WV
The radar
The Cleveland radar (KCLE), 87 km from the middle of the area, began a volume at 18:59 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 12:00Z, 6.9 hours before the alert went out and 182 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.
- Mixed-layer CAPE
- 202 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 648 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 9:46 PM EDT | Mesoscale Discussion | SPC | Allen, Auglaize, Champaign, Crawford, Darke, Defiance and 21 more | 59 min |
| Jul 7, 12:10 AM EDT | Severe Thunderstorm Watch | SPC | Butler, Clermont, Darke, Hamilton, Miami, Montgomery and 3 more | 3 hr |
| Jul 7, 12:51 AM EDT | Mesoscale Discussion | SPC | Butler, Clermont, Darke, Hamilton, Miami, Montgomery and 2 more | 114 min |
| Jul 7, 9:30 AM EDT | Mesoscale Discussion | SPC | Allen, Auglaize, Darke, Defiance, Fulton, Hancock and 12 more | 60 min |
| Jul 7, 9:45 AM EDT | Severe Thunderstorm Watch | SPC | Defiance, Fulton, Paulding, Williams | 4 hr |
| Jul 7, 11:14 AM EDT | Mesoscale Discussion | SPC | Allen, Ashland, Auglaize, Butler, Champaign, Clark and 37 more | 61 min |
| Jul 7, 12:30 PM EDT | Severe Thunderstorm Watch | SPC | Allen, Ashland, Auglaize, Champaign, Clark, Coshocton and 43 more | 6 hr |
| Jul 7, 1:14 PM EDT | Mesoscale Discussion | SPC | Allen, Auglaize, Defiance, Fulton, Henry, Lucas and 6 more | 61 min |
| Jul 7, 3:10 PM EDT | Severe Thunderstorm Watch | SPC | Athens, Belmont, Carroll, Columbiana, Guernsey, Harrison and 12 more | 6 hr |
| Jul 7, 6:30 PM EDT | Tornado Watch | SPC | Allen, Auglaize, Champaign, Clark, Darke, Defiance and 13 more | 6 hr |
| Jul 7, 6:52 PM EDT | Mesoscale Discussion | SPC | Athens, Belmont, Carroll, Columbiana, Gallia, Geauga and 15 more | 53 min |
| Jul 7, 12:10 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Columbia, Lackawanna, Lebanon and 10 more | 65 min |
| Jul 7, 2:23 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lackawanna and 12 more | 67 min |
| Jul 7, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lancaster and 8 more | 5 hr |
| Jul 7, 6:29 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Chester, Delaware, Lancaster and 7 more | 61 min |
Nearby
Mesoscale Discussions in Ohio, 2003Mesoscale Discussions in Pennsylvania, 2003Mesoscale Discussions in West Virginia, 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.