Tornado Watch 484

Issued

Sep 1, 2021, 6:22 PM EDT (22:22 UTC)

Expired

Sep 2, 2021, 1:00 AM EDT

In force

7 hr

Issued by

the Storm Prediction Center

Strongest gust expected

60 kt

Counties Greater Bridgeport Planning Region, CT, Lower Connecticut River Valley Planning Region, CT, Naugatuck Valley Planning Region, CT, Southeastern Connecticut Planning Region, CT, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Passaic County, NJ, Union County, NJ, Bronx County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Suffolk County, NY, Westchester County, NY

The Brookhaven radar (KOKX), 41 km from the middle of the area, began a volume at 22:24 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.

Two or more tornadoes

50%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

30%

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

40%

• Mesoscale Discussion 1673 Tornado watch 483Sep 1, 4:28 PM EDT
• Mesoscale Discussion 1674 Tornado watch 483Sep 1, 6:34 PM EDT
• Mesoscale Discussion 1677 Tornado watch 484Sep 1, 8:32 PM EDT
• Mesoscale Discussion 1679 Tornado watch 484Sep 1, 11:20 PM EDT

588 
WWUS20 KWNS 012217
SEL4  
SPC WW 012217
CTZ000-NJZ000-NYZ000-CWZ000-020500-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 484
NWS Storm Prediction Center Norman OK
620 PM EDT Wed Sep 1 2021

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Southern Connecticut
  Northern New Jersey
  Southern New York
  Coastal Waters

* Effective this Wednesday night and Thursday morning from 620 PM
  until 100 AM EDT.

* Primary threats include...
  A few tornadoes possible
  Isolated damaging wind gusts to 70 mph possible

SUMMARY...Related to the remnants of Ida, a moist environment in
conjunction with strong low-level shear/SRH will support the
possibility of transient supercells capable of a tornado risk.

The tornado watch area is approximately along and 35 statute miles
north and south of a line from 5 miles west southwest of Newark NJ
to 15 miles south southeast of Groton CT. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU4).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and severe thunderstorms in and close to the watch
area. Persons in these areas should be on the lookout for
threatening weather conditions and listen for later statements
and possible warnings.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 482...WW 483...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 0 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 23035.

...Guyer

Tornado Watches in New York, 2021Tornado Watches in New Jersey, 2021Tornado Watches in Connecticut, 2021Every tornado watch in 2021

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.