Alert archive / New York / Tornado Watches in 2020
Tornado Watch 410
The Storm Prediction Center issued this tornado watch at Aug 2, 2020, 3:10 PM EDT for 5 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 2, 2020, 3:10 PM EDT (19:10 UTC)
- Expired
- Aug 2, 2020, 10:00 PM EDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 50 counties
Capitol Planning Region, CT, Greater Bridgeport Planning Region, CT, Lower Connecticut River Valley Planning Region, CT, Naugatuck Valley Planning Region, CT, Northwest Hills Planning Region, CT, Berkshire County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Albany County, NY, Chenango County, NY, Clinton County, NY, Columbia County, NY, Delaware County, NY, Dutchess County, NY, Essex County, NY, Franklin County, NY, Fulton County, NY, Greene County, NY, Hamilton County, NY, Herkimer County, NY, Jefferson County, NY, Lewis County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Orange County, NY, Otsego County, NY, Putnam County, NY, Rensselaer County, NY, Rockland County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, St. Lawrence County, NY, Sullivan County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Westchester County, NY, Monroe County, PA, Pike County, PA, Wayne County, PA, Addison County, VT, Bennington County, VT, Chittenden County, VT, Franklin County, VT, Grand Isle County, VT, Rutland County, VT, Windham County, VT
The radar
The Albany radar (KENX), 92 km from the middle of the area, began a volume at 19:10 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 3:13 PM EDT | Severe Thunderstorm Warning | ALY | Hamilton, Herkimer | 62 min |
| Aug 2, 3:41 PM EDT | Severe Thunderstorm Warning | BOX | Northeastern Connecticut Planning Region | 49 min |
| Aug 2, 3:52 PM EDT | Severe Thunderstorm Warning | BTV | Franklin, St. Lawrence | 38 min |
| Aug 2, 5:22 PM EDT | Severe Thunderstorm Warning | ALY | Northwest Hills Planning Region | 53 min |
| Aug 2, 6:09 PM EDT | Tornado Warning | ALY | Northwest Hills Planning Region | 51 min |
| Aug 2, 6:46 PM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 59 min |
| Aug 2, 6:55 PM EDT | Tornado Warning | BOX | Hampden, Hampshire | 35 min |
| Aug 2, 7:28 PM EDT | Tornado Warning | BOX | Hampden, Hampshire | 32 min |
| Aug 2, 7:36 PM EDT | Severe Thunderstorm Warning | ALY | Hamilton | 39 min |
| Aug 2, 7:39 PM EDT | Tornado Warning | ALY | Hamilton | 24 min |
| Aug 2, 7:39 PM EDT | Severe Thunderstorm Warning | BTV | Essex, Franklin | 51 min |
| Aug 2, 7:42 PM EDT | Tornado Warning | BTV | Essex, Franklin | 33 min |
| Aug 2, 7:54 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire | 39 min |
| Aug 2, 8:11 PM EDT | Tornado Warning | BTV | Essex | 34 min |
| Aug 2, 8:33 PM EDT | Severe Thunderstorm Warning | ALY | Hamilton | 57 min |
| Aug 2, 8:42 PM EDT | Severe Thunderstorm Warning | BTV | Essex | 14 min |
| Aug 2, 8:54 PM EDT | Severe Thunderstorm Warning | BTV | Essex, Franklin | 51 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 7.2 hours before the alert went out and 80 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
- 60 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 925 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 2:00 PM EDT | Mesoscale Discussion | SPC | 2 hr | |
| Aug 2, 6:45 PM EDT | Mesoscale Discussion | SPC | 2 hr | |
| Aug 2, 6:53 AM EDT | Mesoscale Discussion | SPC | Lehigh, Northampton | 3 hr |
Nearby
Tornado Watches in New York, 2020Tornado Watches in Vermont, 2020Tornado Watches in Connecticut, 2020Every tornado watch 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.