Alert archive / New York / Mesoscale Discussions in 2020
Mesoscale Discussion 757
The Storm Prediction Center issued this mesoscale discussion at May 29, 2020, 10:47 AM EDT for 4 states. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- May 29, 2020, 10:47 AM EDT (14:47 UTC)
- Expired
- May 29, 2020, 12:45 PM EDT
- In force
- 118 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 60%
All 72 counties
Allegany County, NY, Broome County, NY, Cattaraugus County, NY, Cayuga County, NY, Chautauqua County, NY, Chemung County, NY, Chenango County, NY, Cortland County, NY, Erie County, NY, Genesee County, NY, Livingston County, NY, Madison County, NY, Monroe County, NY, Oneida County, NY, Onondaga County, NY, Ontario County, NY, Oswego County, NY, Otsego 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, 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, Knox County, OH, Licking County, OH, Mahoning County, OH, Medina County, OH, Morrow County, OH, Muskingum County, OH, Portage County, OH, Richland County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Wayne County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Cameron County, PA, Clarion County, PA, Crawford County, PA, Elk County, PA, Erie County, PA, Forest 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, Brooke County, WV, Hancock County, WV, Ohio County, WV
The radar
The State College radar (KCCX), 111 km from the middle of the area, began a volume at 14:51 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, 2.8 hours before the alert went out and 120 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
- 1304 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| May 29, 12:27 PM EDT | Mesoscale Discussion | SPC | Delaware, Greene, Orange, Sullivan, Ulster | 63 min |
| May 29, 2:25 PM EDT | Severe Thunderstorm Watch | SPC | Albany, Broome, Chenango, Columbia, Delaware, Dutchess and 18 more | 7 hr |
| May 29, 3:01 PM EDT | Severe Thunderstorm Watch | SPC | Clinton, Essex | 6 hr |
| May 29, 3:03 PM EDT | Mesoscale Discussion | SPC | Sullivan | 87 min |
| May 29, 4:54 PM EDT | Mesoscale Discussion | SPC | Allegany, Schuyler, Steuben | 2 hr |
Nearby
Mesoscale Discussions in New York, 2020Mesoscale Discussions in Ohio, 2020Mesoscale Discussions in Pennsylvania, 2020Every mesoscale discussion in 2020
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.