Alert archive / New York / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 491
The Storm Prediction Center issued this severe thunderstorm watch at Jul 1, 2001, 3:00 PM EDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 1, 2001, 3:00 PM EDT (19:00 UTC)
- Expired
- Jul 1, 2001, 9:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 31 counties
Bristol County, MA, Dukes County, MA, Plymouth County, MA, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Middlesex County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Bronx County, NY, Dutchess County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Suffolk County, NY, Sullivan County, NY, Ulster County, NY, Westchester County, NY, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI
The radar
The Brookhaven radar (KOKX), 53 km from the middle of the area, began a volume at 19:00 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.
Warnings issued inside it
16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 3:07 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 38 min |
| Jul 1, 3:16 PM EDT | Severe Thunderstorm Warning | PHI | Somerset | 44 min |
| Jul 1, 3:32 PM EDT | Severe Thunderstorm Warning | ALY | Dutchess | 58 min |
| Jul 1, 3:37 PM EDT | Severe Thunderstorm Warning | OKX | Rockland | 23 min |
| Jul 1, 3:45 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 45 min |
| Jul 1, 3:49 PM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 41 min |
| Jul 1, 4:06 PM EDT | Severe Thunderstorm Warning | PHI | Sussex, Warren | 39 min |
| Jul 1, 4:08 PM EDT | Severe Thunderstorm Warning | OKX | Putnam | 52 min |
| Jul 1, 4:23 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris | 52 min |
| Jul 1, 4:26 PM EDT | Severe Thunderstorm Warning | OKX | Nassau | 34 min |
| Jul 1, 4:48 PM EDT | Severe Thunderstorm Warning | OKX | Rockland | 27 min |
| Jul 1, 4:53 PM EDT | Severe Thunderstorm Warning | OKX | Bergen | 37 min |
| Jul 1, 4:59 PM EDT | Severe Thunderstorm Warning | PHI | Somerset | 46 min |
| Jul 1, 5:04 PM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 41 min |
| Jul 1, 5:15 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex | 45 min |
| Jul 1, 5:22 PM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 38 min |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 7.0 hours before the alert went out and 53 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
- 301 J/kg
- Mixed-layer CIN
- -117 J/kg
- Mixed-layer LCL
- 1284 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 10:30 AM EDT | Severe Thunderstorm Watch | SPC | Berkshire, Franklin, Hampden, Hampshire | 6 hr |
| Jul 1, 2:15 PM EDT | Severe Thunderstorm Watch | SPC | Berkshire, Essex, Franklin, Hampden, Hampshire, Middlesex and 3 more | 7 hr |
| Jul 1, 12:00 PM EDT | Severe Thunderstorm Watch | SPC | Camden, Gloucester, Hunterdon, Warren | 6 hr |
| Jul 1, 4:30 PM EDT | Severe Thunderstorm Watch | SPC | Atlantic, Burlington, Camden, Cumberland, Gloucester, Hunterdon and 5 more | 5 hr |
| Jul 1, 6:30 PM EDT | Severe Thunderstorm Watch | SPC | Cape May | 6 hr |
| Jul 1, 8:15 AM EDT | Severe Thunderstorm Watch | SPC | Allegany, Broome, Cayuga, Chemung, Chenango, Clinton and 21 more | 6 hr |
Nearby
Severe Thunderstorm Watches in New York, 2001Severe Thunderstorm Watches in Connecticut, 2001Severe Thunderstorm Watches in New Jersey, 2001Every severe thunderstorm watch in 2001
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.