Alert archive / Pennsylvania / Mesoscale Discussions in 2018
Mesoscale Discussion 1516
The Storm Prediction Center issued this mesoscale discussion at Oct 2, 2018, 7:24 PM EDT for 5 states. It was in force for 81 min.
The area
The outline as issued.
The facts
- Issued
- Oct 2, 2018, 7:24 PM EDT (23:24 UTC)
- Expired
- Oct 2, 2018, 8:45 PM EDT
- In force
- 81 min
- Issued by
- the Storm Prediction Center
All 61 counties
Bergen County, NJ, Passaic County, NJ, Sussex County, NJ, Dutchess County, NY, Orange County, NY, Putnam County, NY, Rockland County, NY, Sullivan County, NY, Westchester County, NY, Columbiana County, OH, Jefferson County, OH, Mahoning County, OH, Trumbull County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Berks County, PA, Blair County, PA, Bradford County, PA, Butler County, PA, Cambria County, PA, Cameron County, PA, Carbon County, PA, Centre County, PA, Clarion County, PA, Clearfield County, PA, Clinton County, PA, Columbia County, PA, Crawford County, PA, Dauphin County, PA, Elk County, PA, Forest County, PA, Huntingdon County, PA, Indiana County, PA, Jefferson County, PA, Juniata County, PA, Lackawanna County, PA, Lawrence County, PA, Lehigh County, PA, Luzerne County, PA, Lycoming County, PA, McKean County, PA, Mercer County, PA, Mifflin County, PA, Monroe County, PA, Montour County, PA, Northampton County, PA, Northumberland County, PA, Pike County, PA, Potter County, PA, Schuylkill County, PA, Snyder County, PA, Sullivan County, PA, Susquehanna County, PA, Tioga County, PA, Union County, PA, Venango County, PA, Warren County, PA, Wayne County, PA, Wyoming County, PA, Hancock County, WV
The radar
The Binghamton radar (KBGM), 110 km from the middle of the area, began a volume at 23:23 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
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.4 hours before the alert went out and 261 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
- 13 J/kg
- Mixed-layer CIN
- -93 J/kg
- Mixed-layer LCL
- 476 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 205 m²/s²
- 0-3 km storm-relative helicity
- 232 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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, 3:10 PM EDT | Mesoscale Discussion | SPC | 2 hr | |
| Oct 2, 4:57 PM EDT | Tornado Watch | SPC | Greater Bridgeport Planning Region, Northwest Hills Planning Region | 7 hr |
| Oct 2, 4:43 PM EDT | Mesoscale Discussion | SPC | Warren | 2 hr |
| Oct 2, 2:55 PM EDT | Tornado Watch | SPC | Sullivan | 8 hr |
| Oct 2, 4:05 PM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Chautauqua, Erie, Livingston, Ontario and 5 more | 115 min |
| 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, 3:29 PM EDT | Severe Thunderstorm Watch | SPC | Ashland, Athens, Belmont, Carroll, Champaign, Clark and 35 more | 6 hr |
| Oct 2, 4:49 PM EDT | Mesoscale Discussion | SPC | Ashland, Athens, Belmont, Carroll, Champaign, Clark and 51 more | 116 min |
| Oct 2, 7:34 PM EDT | Mesoscale Discussion | SPC | Athens, Belmont, Carroll, Coshocton, Fairfield, Franklin and 14 more | 86 min |
Nearby
Mesoscale Discussions in Pennsylvania, 2018Mesoscale Discussions in New York, 2018Mesoscale Discussions in Ohio, 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.