Alert archive / Ohio / Mesoscale Discussions in 2013
Mesoscale Discussion 2108
The Storm Prediction Center issued this mesoscale discussion at Dec 22, 2013, 12:55 AM EST for 22 counties in Ohio; Beaver County, Lawrence County, Mercer County, Pennsylvania; 5 counties in West Virginia. It was in force for 95 min.
The area
The outline as issued.
The facts
- Issued
- Dec 22, 2013, 12:55 AM EST (05:55 UTC)
- Expired
- Dec 22, 2013, 2:30 AM EST
- In force
- 95 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 30 counties
Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Geauga County, OH, Guernsey County, OH, Harrison 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, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Washington County, OH, Wayne County, OH, Beaver County, PA, Lawrence County, PA, Mercer County, PA, Brooke County, WV, Hancock County, WV, Marshall County, WV, Ohio County, WV, Wood County, WV
The radar
The Pittsburgh radar (KPBZ), 91 km from the middle of the area, began a volume at 05:57 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 (KAGC), launched 00:00Z, 5.9 hours before the alert went out and 103 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 714 m above ground
- 0-6 km bulk shear
- 81 kt
- 0-1 km storm-relative helicity
- 498 m²/s²
- 0-3 km storm-relative helicity
- 527 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Dec 21, 9:03 PM EST | Severe Thunderstorm Watch | SPC | Adams, Brown, Butler, Clark, Clermont, Clinton and 15 more | 4 hr |
| Dec 21, 11:38 PM EST | Severe Thunderstorm Watch | SPC | Gallia, Jackson, Lawrence, Meigs, Vinton | 6 hr |
| Dec 22, 1:36 AM EST | Severe Thunderstorm Watch | SPC | Athens, Belmont, Carroll, Columbiana, Coshocton, Guernsey and 9 more | 3 hr |
| Dec 22, 3:37 AM EST | Severe Thunderstorm Watch | SPC | Adams, Bedford, Blair, Cambria, Cameron, Centre and 26 more | 5 hr |
| Dec 22, 6:14 AM EST | Mesoscale Discussion | SPC | Adams, Columbia, Cumberland, Dauphin, Franklin, Fulton and 12 more | 61 min |
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.