Alert archive / Ohio / Mesoscale Discussions in 2018
Mesoscale Discussion 1517
The Storm Prediction Center issued this mesoscale discussion at Oct 2, 2018, 7:34 PM EDT for 20 counties in Ohio; Brooke County, Marshall County, Ohio County, West Virginia. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- Oct 2, 2018, 7:34 PM EDT (23:34 UTC)
- Expired
- Oct 2, 2018, 9:00 PM EDT
- In force
- 86 min
- Issued by
- the Storm Prediction Center
All 23 counties
Athens County, OH, Belmont County, OH, Carroll County, OH, Coshocton County, OH, Fairfield County, OH, Franklin County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Tuscarawas County, OH, Vinton County, OH, Washington County, OH, Brooke County, WV, Marshall County, WV, Ohio County, WV
The radar
The Pittsburgh radar (KPBZ), 148 km from the middle of the area, began a volume at 23:36 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 (KAGC), launched 12:00Z, 11.6 hours before the alert went out and 152 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
- 779 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 821 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.7
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 2, 2:26 PM EDT | Mesoscale Discussion | SPC | Belmont, Carroll, Columbiana, Harrison, Jefferson, Mahoning and 5 more | 2 hr |
| Oct 2, 2:55 PM EDT | Mesoscale Discussion | SPC | Ashland, Auglaize, Champaign, Clark, Clinton, Coshocton and 33 more | 2 hr |
| Oct 2, 2:55 PM EDT | Tornado Watch | SPC | Ashtabula, Columbiana, Jefferson, Mahoning, Trumbull | 8 hr |
| Oct 2, 3:29 PM EDT | Severe Thunderstorm Watch | SPC | Ashland, Athens, Belmont, Carroll, Champaign, Clark and 35 more | 6 hr |
| Oct 2, 4:43 PM EDT | Mesoscale Discussion | SPC | Ashtabula, Columbiana, Jefferson, Mahoning, Trumbull | 2 hr |
| Oct 2, 4:49 PM EDT | Mesoscale Discussion | SPC | Ashland, Athens, Belmont, Carroll, Champaign, Clark and 51 more | 116 min |
| Oct 2, 7:24 PM EDT | Mesoscale Discussion | SPC | Columbiana, Jefferson, Mahoning, Trumbull | 81 min |
Nearby
Mesoscale Discussions in Ohio, 2018Mesoscale Discussions in West Virginia, 2018Every mesoscale discussion in 2018
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.