Alert archive / New York / Mesoscale Discussions in 2015
Mesoscale Discussion 1487
The Storm Prediction Center issued this mesoscale discussion at Jul 19, 2015, 7:29 PM EDT for 4 states. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Jul 19, 2015, 7:29 PM EDT (23:29 UTC)
- Expired
- Jul 19, 2015, 9:00 PM EDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 33 counties
Berkshire County, MA, Franklin County, MA, Belknap County, NH, Carroll County, NH, Cheshire County, NH, Grafton County, NH, Hillsborough County, NH, Merrimack County, NH, Strafford County, NH, Sullivan County, NH, Albany County, NY, Essex County, NY, Fulton County, NY, Hamilton County, NY, Herkimer County, NY, Montgomery County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Warren County, NY, Washington County, NY, Addison County, VT, Bennington County, VT, Caledonia County, VT, Chittenden County, VT, Essex County, VT, Lamoille County, VT, Orange County, VT, Rutland County, VT, Washington County, VT, Windham County, VT, Windsor County, VT
The radar
The Albany radar (KENX), 104 km from the middle of the area, began a volume at 23:28 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
Albany, NY (KALY), launched 12:00Z, 11.5 hours before the alert went out and 82 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
- 280 J/kg
- Mixed-layer CIN
- -117 J/kg
- Mixed-layer LCL
- 797 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 2:49 PM EDT | Severe Thunderstorm Watch | SPC | Berkshire, Essex, Franklin, Hampden, Hampshire, Middlesex and 1 more | 8 hr |
| Jul 19, 1:36 PM EDT | Mesoscale Discussion | SPC | Belknap, Grafton, Merrimack, Sullivan | 2 hr |
| Jul 19, 2:11 PM EDT | Mesoscale Discussion | SPC | Allegany, Cattaraugus, Chautauqua, Erie, Livingston, Wyoming | 2 hr |
| Jul 19, 3:18 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Broome, Cattaraugus, Cayuga, Chautauqua, Chemung and 26 more | 7 hr |
Nearby
Mesoscale Discussions in New York, 2015Mesoscale Discussions in Vermont, 2015Mesoscale Discussions in New Hampshire, 2015Every mesoscale discussion in 2015
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.