Alert archive / New York / Mesoscale Discussions in 2020
Mesoscale Discussion 599
The Storm Prediction Center issued this mesoscale discussion at May 15, 2020, 2:59 PM EDT for 4 states. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- May 15, 2020, 2:59 PM EDT (18:59 UTC)
- Expired
- May 15, 2020, 4:30 PM EDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 95%
All 40 counties
Berkshire County, MA, Franklin County, MA, Hampshire County, MA, Albany County, NY, Broome County, NY, Cayuga County, NY, Chemung County, NY, Chenango County, NY, Columbia County, NY, Cortland County, NY, Delaware County, NY, Fulton County, NY, Greene County, NY, Hamilton County, NY, Herkimer County, NY, Lewis County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Onondaga County, NY, Oswego County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Schuyler County, NY, Seneca County, NY, Sullivan County, NY, Tioga County, NY, Tompkins County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA, Bennington County, VT, Rutland County, VT, Windham County, VT
The radar
The Albany radar (KENX), 69 km from the middle of the area, began a volume at 18:58 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
Albany, NY (KALY), launched 12:00Z, 7.0 hours before the alert went out and 86 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
- 815 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 136 m²/s²
- 0-3 km storm-relative helicity
- 149 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 15, 3:32 PM EDT | Tornado Watch | SPC | Berkshire, Essex, Franklin, Hampden, Hampshire, Middlesex and 3 more | 6 hr |
| May 15, 4:58 PM EDT | Mesoscale Discussion | SPC | Berkshire, Franklin, Hampden, Hampshire, Middlesex, Worcester | 92 min |
| May 15, 6:59 PM EDT | Mesoscale Discussion | SPC | Berkshire, Franklin, Hampshire | 2 hr |
| May 15, 1:52 PM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Chautauqua, Erie, Livingston, Ontario and 3 more | 83 min |
| May 15, 7:47 PM EDT | Mesoscale Discussion | SPC | Broome, Chemung, Tioga | 58 min |
Nearby
Mesoscale Discussions in New York, 2020Mesoscale Discussions in Massachusetts, 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.