Severe Thunderstorm Watch 234

Issued

Jun 3, 2021, 2:48 PM EDT (18:48 UTC)

Expired

Jun 3, 2021, 9:00 PM EDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

1 in

Strongest gust expected

55 kt

The Dover AFB radar (KDOX), 107 km from the middle of the area, began a volume at 18:47 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

20%

One or more EF2 to EF5 tornadoes

5%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

10%

Ten or more severe hail reports

10%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 844 Severe potential...watch possibleJun 3, 1:46 PM EDT
• Mesoscale Discussion 845 Severe thunderstorm watch 234Jun 3, 4:47 PM EDT

798 
WWUS20 KWNS 031845
SEL4  
SPC WW 031845
DCZ000-DEZ000-MDZ000-NJZ000-PAZ000-VAZ000-WVZ000-CWZ000-040100-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 234
NWS Storm Prediction Center Norman OK
245 PM EDT Thu Jun 3 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  District Of Columbia
  Delaware
  Maryland
  New Jersey
  Southeast and Eastern Pennsylvania
  Northern and Eastern Virginia
  Far Eastern West Virginia
  Coastal Waters

* Effective this Thursday afternoon and evening from 245 PM until
  900 PM EDT.

* Primary threats include...
  Scattered damaging wind gusts to 65 mph likely
  A tornado or two possible

SUMMARY...Strong to severe thunderstorms are expected to develop
this afternoon initially across southeast Pennsylvania into
Maryland/Virginia Blue Ridge vicinity. A relatively moist/unstable
environment along with moderately strong southwesterly deep-layer
winds will support sustained multicells and potentially some
supercells. Thunderstorm-related wind damage is the most probable
risk, but some hail and a low tornado risk will exist as well.

The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 35 miles northeast of
Allentown PA to 45 miles east southeast of Charlottesville VA. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU4).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce
tornadoes.

&&

AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 55 knots. A few
cumulonimbi with maximum tops to 500. Mean storm motion vector
24025.

...Guyer

Severe Thunderstorm Watches in Virginia, 2021Severe Thunderstorm Watches in Maryland, 2021Severe Thunderstorm Watches in Pennsylvania, 2021Every severe thunderstorm 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.