Alert archive / New York / Severe Thunderstorm Watches in 2023
Severe Thunderstorm Watch 608
The Storm Prediction Center issued this severe thunderstorm watch at Aug 7, 2023, 6:41 PM EDT for 5 counties in New Jersey; 20 counties in New York. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2023, 6:41 PM EDT (22:41 UTC)
- Expired
- Aug 7, 2023, 10:32 PM EDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 25 counties
Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Passaic County, NJ, Union County, NJ, Albany County, NY, Bronx County, NY, Columbia County, NY, Dutchess County, NY, Fulton County, NY, Greene County, NY, Herkimer County, NY, Kings County, NY, Montgomery County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Queens County, NY, Rensselaer County, NY, Richmond County, NY, Rockland County, NY, Schenectady County, NY, Schoharie County, NY, Ulster County, NY, Westchester County, NY
The radar
The Albany radar (KENX), 45 km from the middle of the area, began a volume at 22:41 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
- 2%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 5%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 50%
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 10.7 hours before the alert went out and 173 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
- 36 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 726 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 143 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 2:31 PM EDT | Mesoscale Discussion | SPC | Atlantic, Burlington, Camden, Cape May, Cumberland, Essex and 12 more | 59 min |
| Aug 7, 3:13 PM EDT | Tornado Watch | SPC | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 8 hr |
| Aug 7, 5:01 PM EDT | Mesoscale Discussion | SPC | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 7 more | 89 min |
| Aug 7, 6:57 PM EDT | Mesoscale Discussion | SPC | Burlington, Camden, Essex, Gloucester, Hudson, Hunterdon and 10 more | 93 min |
| Aug 7, 12:39 PM EDT | Mesoscale Discussion | SPC | Allegany, Cayuga, Chemung, Livingston, Monroe, Onondaga and 8 more | 2 hr |
Nearby
Severe Thunderstorm Watches in New York, 2023Severe Thunderstorm Watches in New Jersey, 2023Every severe thunderstorm watch in 2023
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.