Tornado Watch 483

Issued

Sep 1, 2021, 12:40 PM EDT (16:40 UTC)

Expired

Sep 1, 2021, 9:54 PM EDT

In force

9 hr

Issued by

the Storm Prediction Center

Strongest gust expected

65 kt

The Philadelphia radar (KDIX), 68 km from the middle of the area, began a volume at 16:40 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

70%

One or more EF2 to EF5 tornadoes

30%

Ten or more severe wind reports

70%

One or more gusts of 65 knots or more

30%

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

80%

• Mesoscale Discussion 1668 Severe potential...tornado watch likelySep 1, 11:03 AM EDT
• Mesoscale Discussion 1669 Tornado watch 482...483Sep 1, 1:32 PM EDT
• Mesoscale Discussion 1671 Tornado watch 482...483Sep 1, 3:09 PM EDT
• 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

745 
WWUS20 KWNS 011638
SEL3  
SPC WW 011638
DEZ000-MDZ000-NJZ000-PAZ000-CWZ000-020200-

URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 483
NWS Storm Prediction Center Norman OK
1240 PM EDT Wed Sep 1 2021

The NWS Storm Prediction Center has issued a

* Tornado Watch for portions of 
  Delaware
  Eastern Maryland
  New Jersey
  Southeast Pennsylvania
  Coastal Waters

* Effective this Wednesday afternoon and evening from 1240 PM
  until 1000 PM EDT.

* Primary threats include...
  A few tornadoes likely with a couple intense tornadoes possible
  Scattered damaging winds likely with isolated significant gusts
    to 75 mph possible

SUMMARY...Discrete lower-topped supercells developing across eastern
Virginia will spread east-northeast as a broader cluster into this
evening. Tornadoes and damaging winds are expected.

The tornado watch area is approximately along and 60 statute miles
north and south of a line from 25 miles east southeast of Trenton NJ
to 40 miles west southwest of Wilmington DE. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU3).

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...

AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 0 inches. Extreme turbulence and surface wind
gusts to 65 knots. A few cumulonimbi with maximum tops to 450. Mean
storm motion vector 25030.

...Grams

Tornado Watches in New Jersey, 2021Tornado Watches in Pennsylvania, 2021Tornado Watches in Maryland, 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.