Alert archive / New York / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 40
The Storm Prediction Center issued this severe thunderstorm watch at Feb 25, 2017, 2:46 PM EST for 6 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 25, 2017, 2:46 PM EST (19:46 UTC)
- Expired
- Feb 25, 2017, 7:19 PM EST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 44 counties
Northwest Hills Planning Region, CT, Berkshire County, MA, Bergen County, NJ, Essex County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Albany County, NY, Columbia County, NY, Delaware County, NY, Dutchess County, NY, Fulton County, NY, Greene County, NY, Montgomery 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, Ulster County, NY, Warren County, NY, Washington County, NY, Bucks County, PA, Carbon County, PA, Lackawanna County, PA, Lehigh County, PA, Luzerne County, PA, Monroe County, PA, Northampton County, PA, Pike County, PA, Wayne County, PA, Bennington County, VT
The radar
The Albany radar (KENX), 36 km from the middle of the area, began a volume at 19:49 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
- 5%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
26 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 25, 3:06 PM EST | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wayne | 24 min |
| Feb 25, 3:13 PM EST | Severe Thunderstorm Warning | ALY | Fulton, Herkimer, Montgomery | 62 min |
| Feb 25, 3:15 PM EST | Severe Thunderstorm Warning | BGM | Lackawanna, Wayne | 30 min |
| Feb 25, 3:19 PM EST | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Northampton | 41 min |
| Feb 25, 3:22 PM EST | Flash Flood Warning | BGM | Lackawanna, Luzerne | 3 hr |
| Feb 25, 3:45 PM EST | Flash Flood Warning | BGM | Otsego | 6 hr |
| Feb 25, 3:45 PM EST | Severe Thunderstorm Warning | BGM | Lackawanna, Luzerne, Wayne | 60 min |
| Feb 25, 3:46 PM EST | Severe Thunderstorm Warning | ALY | Fulton, Hamilton, Montgomery, Saratoga | 59 min |
| Feb 25, 4:01 PM EST | Severe Thunderstorm Warning | BGM | Delaware | 29 min |
| Feb 25, 4:01 PM EST | Severe Thunderstorm Warning | BGM | Delaware, Sullivan | 44 min |
| Feb 25, 4:04 PM EST | Tornado Warning | BGM | Delaware, Sullivan | 21 min |
| Feb 25, 4:05 PM EST | Severe Thunderstorm Warning | PHI | Carbon, Lehigh, Monroe | 40 min |
| Feb 25, 4:13 PM EST | Flash Flood Warning | BGM | Lackawanna, Susquehanna, Wayne | 3 hr |
| Feb 25, 4:17 PM EST | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Warren | 43 min |
| Feb 25, 4:19 PM EST | Severe Thunderstorm Warning | BGM | Sullivan | 56 min |
| Feb 25, 4:29 PM EST | Flash Flood Warning | BGM | Delaware | 3 hr |
| Feb 25, 4:35 PM EST | Severe Thunderstorm Warning | BGM | Delaware, Sullivan | 55 min |
| Feb 25, 4:54 PM EST | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 51 min |
| Feb 25, 4:58 PM EST | Severe Thunderstorm Warning | BGM | Sullivan | 47 min |
| Feb 25, 5:02 PM EST | Severe Thunderstorm Warning | OKX | Passaic | 43 min |
| Feb 25, 5:17 PM EST | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Mercer and 5 more | 43 min |
| Feb 25, 5:33 PM EST | Severe Thunderstorm Warning | ALY | Ulster | 48 min |
| Feb 25, 5:37 PM EST | Severe Thunderstorm Warning | OKX | Passaic | 38 min |
| Feb 25, 5:54 PM EST | Severe Thunderstorm Warning | ALY | Dutchess | 45 min |
| Feb 25, 6:08 PM EST | Severe Thunderstorm Warning | ALY | Northwest Hills Planning Region | 67 min |
| Feb 25, 6:10 PM EST | Severe Thunderstorm Warning | OKX | Bergen | 50 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, 7.8 hours before the alert went out and 57 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
- 3 J/kg
- Mixed-layer CIN
- -449 J/kg
- Mixed-layer LCL
- 881 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 263 m²/s²
- 0-3 km storm-relative helicity
- 358 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 |
|---|---|---|---|---|
| Feb 25, 6:24 PM EST | Mesoscale Discussion | SPC | 66 min | |
| Feb 25, 4:44 PM EST | Mesoscale Discussion | SPC | Berkshire | 91 min |
| Feb 25, 12:16 PM EST | Mesoscale Discussion | SPC | Burlington, Camden, Essex, Gloucester, Hunterdon, Mercer and 7 more | 89 min |
| Feb 25, 1:30 PM EST | Severe Thunderstorm Watch | SPC | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more | 6 hr |
| Feb 25, 4:26 PM EST | Mesoscale Discussion | SPC | Camden, Cape May, Cumberland, Gloucester, Salem | 94 min |
| Feb 24, 8:49 PM EST | Mesoscale Discussion | SPC | Beaver, Crawford, Lawrence, Mercer, Washington | 116 min |
Nearby
Severe Thunderstorm Watches in New York, 2017Severe Thunderstorm Watches in New Jersey, 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.