Alert archive / Ohio / Mesoscale Discussions in 2017
Mesoscale Discussion 1084
The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2017, 12:31 PM EDT for 4 states. It was in force for 119 min.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2017, 12:31 PM EDT (16:31 UTC)
- Expired
- Jun 18, 2017, 2:30 PM EDT
- In force
- 119 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 89 counties
Allegany County, NY, Cattaraugus County, NY, Cayuga County, NY, Chautauqua County, NY, Chemung County, NY, Cortland County, NY, Erie County, NY, Genesee County, NY, Livingston County, NY, Madison County, NY, Monroe County, NY, Niagara County, NY, Onondaga County, NY, Ontario County, NY, Orleans County, NY, Oswego County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Wayne County, NY, Wyoming County, NY, Yates County, NY, Ashland County, OH, Ashtabula County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga County, OH, Delaware County, OH, Erie County, OH, Geauga County, OH, Guernsey County, OH, Harrison County, OH, Holmes County, OH, Huron County, OH, Jefferson County, OH, Knox County, OH, Lake County, OH, Licking County, OH, Lorain County, OH, Mahoning County, OH, Medina County, OH, Monroe County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Portage County, OH, Richland County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Washington County, OH, Wayne County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Cambria County, PA, Cameron County, PA, Clarion County, PA, Clearfield County, PA, Clinton County, PA, Crawford County, PA, Elk County, PA, Erie County, PA, Forest County, PA, Greene County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, McKean County, PA, Mercer County, PA, Potter County, PA, Tioga County, PA, Venango County, PA, Warren County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Marshall County, WV, Ohio County, WV
The radar
The Buffalo radar (KBUF), 98 km from the middle of the area, began a volume at 16:34 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
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 4.5 hours before the alert went out and 97 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
- 199 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 1297 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 163 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.5
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 |
|---|---|---|---|---|
| Jun 18, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Broome, Cattaraugus, Cayuga, Chautauqua, Chemung and 23 more | 8 hr |
| Jun 18, 3:31 PM EDT | Mesoscale Discussion | SPC | Broome, Chenango, Clinton, Delaware, Essex, Franklin and 10 more | 2 hr |
| Jun 18, 4:30 PM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 10 more | 90 min |
Nearby
Mesoscale Discussions in Ohio, 2017Mesoscale Discussions in Pennsylvania, 2017Mesoscale Discussions in New York, 2017Every mesoscale discussion in 2017
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.