Severe Thunderstorm Watch 408

Issued

Aug 1, 2021, 12:37 PM EDT (16:37 UTC)

Expired

Aug 1, 2021, 7:58 PM EDT

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

1 in

Strongest gust expected

65 kt

The Morehead City radar (KMHX), 54 km from the middle of the area, began a volume at 16:38 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

10%

Ten or more severe wind reports

60%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

20%

One or more hailstones of 2 inches or more

10%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 1411 Severe potential...watch unlikelyAug 1, 10:54 AM EDT
• Mesoscale Discussion 1412 Severe potential...watch likelyAug 1, 11:51 AM EDT
• Mesoscale Discussion 1416 Severe thunderstorm watch 408Aug 1, 2:53 PM EDT

591 
WWUS20 KWNS 011635
SEL8  
SPC WW 011635
NCZ000-SCZ000-CWZ000-020000-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 408
NWS Storm Prediction Center Norman OK
1235 PM EDT Sun Aug 1 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Central and eastern North Carolina
  Northeast South Carolina
  Coastal Waters

* Effective this Sunday afternoon and evening from 1235 PM until
  800 PM EDT.

* Primary threats include...
  Scattered damaging winds likely with isolated significant gusts
    to 75 mph possible
  Isolated large hail events to 1 inch in diameter possible
  A tornado or two possible

SUMMARY...Outflow-dominated clusters should develop and spread east
this afternoon into early evening with damaging winds as the primary
threat. A tornado or two is possible across far eastern North
Carolina.

The severe thunderstorm watch area is approximately along and 90
statute miles east and west of a line from 75 miles east northeast
of Rocky Mount NC to 15 miles east of Myrtle Beach SC. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU8).

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 65 knots. A few
cumulonimbi with maximum tops to 550. Mean storm motion vector
28030.

...Grams

Severe Thunderstorm Watches in North Carolina, 2021Severe Thunderstorm Watches in South Carolina, 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.