Alert archive / New York / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 388
The Storm Prediction Center issued this severe thunderstorm watch at Jul 1, 2017, 1:19 PM EDT for 6 states. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 1, 2017, 1:19 PM EDT (17:19 UTC)
- Expired
- Jul 1, 2017, 9:00 PM EDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 55 counties
Capitol Planning Region, CT, Northwest Hills Planning Region, CT, Berkshire County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Worcester County, MA, Belknap County, NH, Carroll County, NH, Cheshire County, NH, Grafton County, NH, Hillsborough County, NH, Merrimack County, NH, Rockingham County, NH, Strafford County, NH, Sullivan County, NH, Albany County, NY, Broome County, NY, Chemung County, NY, Chenango County, NY, Columbia County, NY, Cortland County, NY, Delaware County, NY, Dutchess County, NY, Fulton County, NY, Greene County, NY, Madison County, NY, Montgomery County, NY, Onondaga 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, Sullivan County, NY, Tioga County, NY, Tompkins County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Bradford County, PA, Lackawanna County, PA, Luzerne County, PA, Pike County, PA, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA, Bennington County, VT, Orange County, VT, Rutland County, VT, Windham County, VT, Windsor County, VT
The radar
The Albany radar (KENX), 50 km from the middle of the area, began a volume at 17:23 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 10%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 10%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
43 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 1:34 PM EDT | Severe Thunderstorm Warning | GYX | Carroll, Grafton | 41 min |
| Jul 1, 1:39 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Hamilton, Saratoga, Warren | 66 min |
| Jul 1, 1:46 PM EDT | Tornado Warning | GYX | Carroll, Grafton | 26 min |
| Jul 1, 1:50 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Onondaga, Seneca, Tompkins, Yates | 55 min |
| Jul 1, 2:33 PM EDT | Flash Flood Warning | BGM | Cayuga, Cortland, Madison, Oneida, Onondaga, Otsego | 3 hr |
| Jul 1, 2:35 PM EDT | Severe Thunderstorm Warning | BGM | Cayuga, Chenango, Cortland, Madison, Onondaga | 55 min |
| Jul 1, 2:44 PM EDT | Severe Thunderstorm Warning | ALY | Saratoga, Warren, Washington | 61 min |
| Jul 1, 2:49 PM EDT | Flash Flood Warning | BTV | Addison, Orange, Rutland, Washington, Windsor | 6 hr |
| Jul 1, 2:50 PM EDT | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Susquehanna, Wayne, Wyoming | 55 min |
| Jul 1, 2:58 PM EDT | Severe Thunderstorm Warning | BTV | Rutland, Windsor | 47 min |
| Jul 1, 2:59 PM EDT | Severe Thunderstorm Warning | BTV | Orange | 31 min |
| Jul 1, 3:14 PM EDT | Severe Thunderstorm Warning | BTV | Orange, Windsor | 31 min |
| Jul 1, 3:15 PM EDT | Flash Flood Warning | BTV | Caledonia, Orange, Washington, Windsor | 3 hr |
| Jul 1, 3:18 PM EDT | Severe Thunderstorm Warning | GYX | Grafton | 57 min |
| Jul 1, 3:23 PM EDT | Tornado Warning | GYX | Grafton | 14 min |
| Jul 1, 3:25 PM EDT | Flash Flood Warning | ALY | Saratoga, Warren, Washington | 6 hr |
| Jul 1, 3:29 PM EDT | Severe Thunderstorm Warning | BGM | Chenango, Madison, Oneida, Otsego | 46 min |
| Jul 1, 3:30 PM EDT | Severe Thunderstorm Warning | BTV | Caledonia, Orange | 30 min |
| Jul 1, 3:44 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Herkimer, Montgomery | 61 min |
| Jul 1, 3:44 PM EDT | Severe Thunderstorm Warning | BTV | Orange, Windsor | 61 min |
| Jul 1, 3:47 PM EDT | Severe Thunderstorm Warning | BTV | Rutland, Windsor | 28 min |
| Jul 1, 3:51 PM EDT | Severe Thunderstorm Warning | GYX | Carroll | 39 min |
| Jul 1, 4:00 PM EDT | Flash Flood Warning | BTV | Rutland, Windsor | 4 hr |
| Jul 1, 4:02 PM EDT | Severe Thunderstorm Warning | GYX | Grafton | 58 min |
| Jul 1, 4:13 PM EDT | Tornado Warning | GYX | Carroll | 47 min |
| Jul 1, 4:13 PM EDT | Severe Thunderstorm Warning | BTV | Rutland, Windsor | 62 min |
| Jul 1, 4:19 PM EDT | Flash Flood Warning | GYX | Coos, Grafton | 116 min |
| Jul 1, 4:29 PM EDT | Severe Thunderstorm Warning | ALY | Fulton, Hamilton | 46 min |
| Jul 1, 4:40 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll, Coos, Grafton | 65 min |
| Jul 1, 5:01 PM EDT | Tornado Warning | GYX | Carroll | 21 min |
| Jul 1, 5:04 PM EDT | Severe Thunderstorm Warning | GYX | Grafton, Sullivan | 56 min |
| Jul 1, 5:10 PM EDT | Flash Flood Warning | GYX | Carroll, Coos, Grafton | 2 hr |
| Jul 1, 5:17 PM EDT | Tornado Warning | ALY | Warren, Washington | 11 min |
| Jul 1, 5:34 PM EDT | Severe Thunderstorm Warning | ALY | Saratoga, Washington | 39 min |
| Jul 1, 5:39 PM EDT | Flash Flood Warning | GYX | Belknap, Grafton, Merrimack, Sullivan | 2 hr |
| Jul 1, 5:42 PM EDT | Flash Flood Warning | ALY | Washington | 3 hr |
| Jul 1, 5:48 PM EDT | Severe Thunderstorm Warning | GYX | Carroll | 42 min |
| Jul 1, 5:50 PM EDT | Severe Thunderstorm Warning | GYX | Belknap, Carroll, Grafton, Merrimack | 55 min |
| Jul 1, 6:02 PM EDT | Flash Flood Warning | ALY | Albany, Saratoga, Schenectady | 58 min |
| Jul 1, 6:24 PM EDT | Severe Thunderstorm Warning | ALY | Rensselaer, Washington | 66 min |
| Jul 1, 6:58 PM EDT | Flash Flood Warning | GYX | Carroll | 3 hr |
| Jul 1, 7:16 PM EDT | Severe Thunderstorm Warning | GYX | Cheshire, Grafton, Hillsborough, Merrimack, Sullivan | 59 min |
| Jul 1, 7:58 PM EDT | Flash Flood Warning | GYX | Grafton, Sullivan | 2 hr |
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, 5.3 hours before the alert went out and 36 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
- 285 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 657 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 4:10 PM EDT | Mesoscale Discussion | SPC | 2 hr | |
| Jul 1, 12:32 PM EDT | Mesoscale Discussion | SPC | Berkshire, Franklin, Hampshire | 118 min |
| Jul 1, 12:54 PM EDT | Mesoscale Discussion | SPC | Broome, Chemung, Cortland, Schuyler, Tioga, Tompkins | 66 min |
| Jul 1, 1:34 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bucks, Carbon, Chester, Columbia and 21 more | 7 hr |
Nearby
Severe Thunderstorm Watches in New York, 2017Severe Thunderstorm Watches in New Hampshire, 2017Severe Thunderstorm Watches in Pennsylvania, 2017Every severe thunderstorm watch in 2017
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.