Special Weather Statement, NWS Raleigh, NC

AREA FORECAST DISCUSSION
National Weather Service Raleigh NC
158 PM EDT Sun Aug 01 2021

.SYNOPSIS...
A cold front will stall across the eastern Carolinas through the
middle of next week. Weak low pressure will travel up along the
front today and on Tuesday as the front wavers near the coast.

&&

.NEAR TERM /THROUGH TONIGHT/...
As of 1250 PM Sunday...

...Severe Thunderstorm Watch 408 has been issued for portions of the
eastern Piedmont, Sandhills and southern and central Coastal Plain...

Thunderstorms are expected to increase in coverage and intensity
across central NC this afternoon, with the strongest storms across
the eastern half of central NC.

Previous discussion...

The main area of convection moving across northern portions of
central NC this morning has largely shifted to the east. Thus,
expect a bit of a lull across all of central NC during the late
morning/midday hours before convection redevelops as the airmass
destabilizes and the weakening short wave trough drops slowly
southeast. Deep convection should fire near the surface
boundary/remnant cool pool from the early morning convection early
this afternoon, along with additional convection moving in from the
west by early afternoon. With moderate instability and a region of
deep layer shear of 30-40 kts (strongest across the north), expect
we'll see multicellular clusters along with possibly a few
supercells. Damaging winds and marginally severe hail will be the
main threat, with a very small threat of a tornado along the stall
surface boundary/differential heating boundary today. Thus, SPC has
central NC in a marginal and slight risk for severe storms today,
with the greatest risk across eastern portions of the area where
instability should be the greatest. The deep convection should
generally have moved to the east of the area by early evening.

Highs today should range in the mid to upper 80s across the north to
the lower to possibly mid 90s across the south, with heat index
values as high as 100 to near 105 across the southern areas. Lows
tonight should range in the mid 60s northwest to the lower 70s
southeast.

&&

.SHORT TERM /MONDAY AND MONDAY NIGHT/...
As of 410 AM Sunday...

The broad upper level trough will persist across the eastern CONUS
on Monday and Monday night. The surface boundary will be pinned
along the coast to start the day Monday with a notably drier air
mass in place across central NC on Monday morning. Precipitable
water values at daybreak Monday will be less than an inch across the
Triad and less than 1.5 inches elsewhere. Surface dew points will be
sub 70 in most locations, perhaps the lower 60s in the Triad. With a
drier and more stable air mass, expect little if any convection
across central NC during the morning and afternoon with the
exception of a very small chance of a shower or storm across the
southeastern portion of the Coastal Plain and near the SC border.

As another short wave trough drops into the TN Valley on Monday
afternoon and Monday night, the surface boundary will lift north on
Monday night, allowing moisture to quickly return to central NC and
providing forcing for ascent for scattered showers or storms to
return on Monday night. Highs will range in the mid 80s to around 90
with lows in the mid 60s to around 70. -Blaes
&&

.LONG TERM /TUESDAY THROUGH SATURDAY/...
As of 250 AM Sunday...

The stationary front over the region will remain, well, stationary.
Several waves along the front will increase rain chances, the
strongest of which appears to occur on Tuesday. Likely pops should
retreat east of I-95 on Wednesday before spreading back to US-1 on
Thursday and Friday. Although the inherited forecast also included
some likely pops in the southeast on Saturday, did not have enough
confidence this far out to keep likely pops in the forecast and
limited pops at high chance. Wednesday could be the day with the
most thunderstorm coverage, but otherwise instability appears to be
relatively limited, so expect that thunderstorms will be more
isolated in nature inside of rain showers.

Temperatures will be below normal throughout the period, with
widespread 70s for highs on Tuesday and Thursday. Highs will rebound
slightly to the mid 80s for Friday and Saturday. Overnight lows will
be in the 60s, with little chance for lows only dropping into the
70s. Can't even rule out an upper 50 near Roxboro Tuesday night.

&&

.AVIATION /18Z SUNDAY THROUGH THURSDAY/...
As of 150 PM Sunday...

24 Hour TAF Period: Scattered to numerous showers and thunderstorms
are expected across the area this afternoon as disturbance moves
across the area. The strongest storms are expected across the
eastern half of central NC (KFAY/KRWI/KRDU). The storms will have
the potential to produce gusty wind, lots of lightning, very heavy
rainfall and sub-VFR cigs and visbys. The threat of showers and
storms will diminish by late this afternoon and evening in a
northwest to southeast fashion. VFR conditions are generally
expected to continue overnight as reinforcing cold front moves
through the area. However, we could see some fog or low stratus at
KFAY and KRWI (as the front begins to stall).

VFR conditions and drier weather is expected on Monday.

Outlook: The surface boundary will persist across the area through
the middle of the upcoming work week as an upper level trough
persists across the area. This will lead to an unsettled pattern
with scattered mainly afternoon and evening showers and storms
returning for Tuesday onward, with periods of sub-VFR fog and low
stratus possible during the overnight and daybreak hours.

&&

.RAH WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$ SYNOPSIS...Blaes
NEAR TERM...BSD/Blaes
SHORT TERM...Blaes
LONG TERM...Green
AVIATION...BSD/Blaes

Hazardous Weather Outlook...UPDATED
National Weather Service Raleigh NC
1250 PM EDT Sun Aug 1 2021

NCZ025>028-040-041-020945-
Durham-Franklin-Nash-Edgecombe-Chatham-Wake-
1250 PM EDT Sun Aug 1 2021

...SEVERE THUNDERSTORM WATCH 408 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.

Scattered thunderstorms will develop and move across the Southern
Coastal Plain and Sandhills this afternoon and evening. The storms
may become strong to severe with a primary threat of damaging wind
gusts and possibly an isolated tornado.

Heat index values will peak in the lower 100s this afternoon.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

NCZ042-043-075>078-085-086-088-089-020945-
Johnston-Wilson-Moore-Lee-Harnett-Wayne-Scotland-Hoke-Cumberland-
Sampson-
1250 PM EDT Sun Aug 1 2021

...SEVERE THUNDERSTORM WATCH 408 IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.

Scattered thunderstorms will develop and move across central NC this
afternoon and evening. The storms may become strong to severe with a
primary threat of damaging wind gusts and possibly an isolated
tornado.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

NCZ007>011-021>024-038-039-073-074-083-084-020945-
Person-Granville-Vance-Warren-Halifax-Forsyth-Guilford-Alamance-
Orange-Davidson-Randolph-Stanly-Montgomery-Anson-Richmond-
1250 PM EDT Sun Aug 1 2021

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...This afternoon and tonight.

Scattered thunderstorms will move across portions of the western and
northern Piedmont and the Northern Coastal Plain this afternoon and
evening. A few storms may become severe with a primary threat of
damaging wind gusts.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
1036 AM EDT SUN AUG 1 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0719 AM     TSTM WND DMG     1 SW HAW RIVER          36.08N 79.37W
08/01/2021                   ALAMANCE           NC   911 CALL CENTER

            1 TREE REPORTED DOWN AT INTERSECTION OF
            RIVERBEND AND TOWN BRANCH ROAD.

&&

NTL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
1038 AM EDT SUN AUG 1 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0728 AM     TSTM WND DMG     4 ENE MEBANE            36.11N 79.21W
08/01/2021                   ORANGE             NC   911 CALL CENTER

            1 TREE REPORTED DOWN AT THE INTERSECTION OF
            PINE MEADOW LANE AND FIELDSVIEW ROAD.

&&

NTL

Special Weather Statement
National Weather Service Raleigh NC
1256 PM EDT Sun Aug 1 2021

NCZ027-028-042-043-011800-
Edgecombe NC-Nash NC-Johnston NC-Wilson NC-
1256 PM EDT Sun Aug 1 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHERN NASH...
EDGECOMBE...WILSON AND NORTHEASTERN JOHNSTON COUNTIES UNTIL 200 PM
EDT...

At 1255 PM EDT, Doppler radar was tracking a line of strong
thunderstorms along a line extending from near Nashville to near
Clayton. Movement was east at 30 mph.

Wind gusts up to 50 mph will be possible with these storms.

Locations impacted include...
Rocky Mount, Tarboro, Nashville, Wilson, Clayton, Elm City, Dortches,
Bailey, Red Oak and Princeville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
50 mph are capable of knocking down small or weakened trees and
blowing around trash cans, potted plants, lawn furniture and other
light outdoor objects.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
central North Carolina.

LAT...LON 3593 7736 3561 7800 3564 7853 3571 7847
      3581 7827 3603 7791 3604 7747 3600 7743
      3600 7741
TIME...MOT...LOC 1655Z 267DEG 24KT 3598 7790 3569 7851

JD

Special Weather Statement
National Weather Service Raleigh NC
108 PM EDT Sun Aug 1 2021

NCZ021-022-038-011800-
Guilford NC-Forsyth NC-Davidson NC-
108 PM EDT Sun Aug 1 2021

...A STRONG THUNDERSTORM WILL AFFECT FORSYTH...NORTHEASTERN DAVIDSON
AND WEST CENTRAL GUILFORD COUNTIES UNTIL 200 PM EDT...

At 108 PM EDT, Doppler radar was tracking a strong thunderstorm over
Enon, or 7 miles southeast of East Bend, moving southeast at 35 mph.

Wind gusts up to 50 mph will be possible with this storm.

Deadly cloud to ground lightning will also be possible with this
storm.

Locations impacted include...
Greensboro, Winston-Salem, High Point, Thomasville, Kernersville,
Clemmons, Bermuda Run, Huntsville, Lewisville and Walkertown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
50 mph are capable of knocking down small or weakened trees and
blowing around trash cans, potted plants, lawn furniture and other
light outdoor objects.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3611 8050 3612 8046 3614 8044 3621 8045
      3622 8043 3624 8045 3626 8045 3626 8038
      3615 7984 3592 8002 3592 8004 3589 8006
      3601 8042 3606 8046 3606 8047 3605 8047
      3604 8049 3608 8052
TIME...MOT...LOC 1708Z 298DEG 30KT 3614 8041

JD

Special Weather Statement
National Weather Service Raleigh NC
112 PM EDT Sun Aug 1 2021

NCZ042-078-089-011800-
Johnston NC-Sampson NC-Wayne NC-
112 PM EDT Sun Aug 1 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN WAYNE...NORTHERN
SAMPSON AND SOUTHEASTERN JOHNSTON COUNTIES UNTIL 200 PM EDT...

At 112 PM EDT, Doppler radar was tracking a strong thunderstorm near
Dunn, or 19 miles southeast of Lillington, moving east at 20 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

Heavy rain and deadly cloud to ground lightning will also be
possible with this storm.

Locations impacted include...
Mount Olive, Princeton, Newton Grove, Hobbton, Spivey's Corner and
Grantham.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
50 mph are capable of knocking down small or weakened trees and
blowing around trash cans, potted plants, lawn furniture and other
light outdoor objects.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
central North Carolina.

LAT...LON 3526 7860 3527 7858 3530 7858 3532 7854
      3534 7853 3536 7856 3548 7813 3518 7807
      3519 7816 3518 7817 3517 7858
TIME...MOT...LOC 1712Z 258DEG 19KT 3527 7851

7

Special Weather Statement
National Weather Service Raleigh NC
207 PM EDT Sun Aug 1 2021

NCZ022-023-038>040-075-011900-
Guilford NC-Chatham NC-Alamance NC-Randolph NC-Davidson NC-Moore NC-
207 PM EDT Sun Aug 1 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN ALAMANCE...
NORTHWESTERN MOORE...EAST CENTRAL DAVIDSON...RANDOLPH...SOUTHWESTERN
GUILFORD AND WESTERN CHATHAM COUNTIES UNTIL 300 PM EDT...

At 206 PM EDT, Doppler radar was tracking a strong thunderstorm near
Randleman, moving southeast at 40 mph.

Wind gusts up to 50 mph will be possible with this storm.

Heavy rain and deadly cloud to ground lightning will also be
possible with this storm.

Locations impacted include...
High Point, Asheboro, Randleman, North Carolina Zoo, Siler City,
Thomasville, Goldston, Seagrove, Archdale and Trinity.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
50 mph are capable of knocking down small or weakened trees and
blowing around trash cans, potted plants, lawn furniture and other
light outdoor objects.

Cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
central North Carolina.

LAT...LON 3600 7997 3580 7913 3533 7957 3549 7977
      3551 7977 3551 7980 3577 8013
TIME...MOT...LOC 1806Z 301DEG 36KT 3585 7991

7