Flash Flood Warning 50, NWS Raleigh, NC

167 
WGUS72 KRAH 010015
FFSRAH

Flash Flood Statement
National Weather Service Raleigh NC
815 PM EDT Mon Aug 31 2020

NCC085-101-183-010200-
/O.CON.KRAH.FF.W.0050.000000T0000Z-200901T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Harnett NC-Johnston NC-Wake NC-
815 PM EDT Mon Aug 31 2020

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 10 PM EDT THIS 
EVENING FOR HARNETT, SOUTHWESTERN JOHNSTON AND SOUTH CENTRAL WAKE 
COUNTIES...

At 815 PM EDT, . Doppler radar indicated thunderstorms producing 
heavy rain in northwest Johnston county. Additional heavy rain is 
moving into Harnett county from the southwest. Flash flooding is 
ongoing and there are current road closures due to flooding in 
Angier, Buies Creek and Coats Crossroads. Between 2 and 4 inches of 
rain have fallen.

HAZARD...Life threatening flash flooding. Thunderstorms producing
         flash flooding.

SOURCE...Doppler radar.

IMPACT...Life threatening flash flooding of creeks and streams,
         urban areas, highways, streets and underpasses.

Some locations that will experience flash flooding include...
  Lillington, Garner, Fuquay-Varina, Clayton, Dunn, Angier, Benson, 
  Erwin, Coats, Four Oaks, Buies Creek, Coats Crossroads, Lake 
  Benson, Raven Rock State Park, Anderson Creek and Timberlake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3523 7891 3530 7897 3557 7887 3561 7884
      3570 7851 3542 7833 3530 7853 3531 7854
      3530 7858 3527 7859 3525 7862 3527 7873
      3526 7876 3527 7879

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

10

580 
WGUS52 KRAH 010129
FFWRAH
NCC085-101-183-010345-
/O.EXT.KRAH.FF.W.0050.000000T0000Z-200901T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Raleigh NC
929 PM EDT Mon Aug 31 2020

The National Weather Service in Raleigh has extended the

* Flash Flood Warning for...
  Harnett County in central North Carolina...
  Southwestern Johnston County in central North Carolina...
  South Central Wake County in central North Carolina...

* Until 1145 PM EDT.

* At 929 PM EDT, . Doppler radar indicated thunderstorms producing 
  heavy rain in Angier, Anderson Creek and Four Oaks. Between 3 and 
  5 inches of rain have fallen. Flash flooding is ongoing or 
  expected to begin shortly.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Doppler radar.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Lillington, Garner, Fuquay-Varina, Clayton, Dunn, Angier, Benson, 
  Erwin, Coats, Four Oaks, Buies Creek, Coats Crossroads, Lake 
  Benson, Raven Rock State Park, Anderson Creek and Timberlake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3523 7891 3530 7897 3557 7887 3561 7884
      3570 7851 3542 7833 3530 7853 3531 7854
      3530 7858 3527 7859 3525 7862 3527 7873
      3526 7876 3527 7879

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

10

AREA FORECAST DISCUSSION
National Weather Service Raleigh NC
325 PM EDT Mon Aug 31 2020

.SYNOPSIS...
A series of upper level disturbances moving through the region will
interact with very moist air and a pair of nearly stationary fronts
extending across the Carolinas through Tuesday night. Meanwhile,
an area of low pressure off the Carolina coast will remain offshore
as it moves northeast away from the area Tuesday.

&&

.NEAR TERM /THROUGH TONIGHT/...
As of 325 PM Monday...

Flanked by a pair of quasi-stationary surface fronts; one just to
our NE and the other just to our SW; an anomalously moist airmass,
featuring PWATs of 2-2.25(1 to 2 S.D. above normal), will remain in
place through Tuesday. While not as vigorous as the upper impulse
that traversed the southern and central Appalachians earlier this
morning, a weakly perturbed flow aloft will continue to support
scattered to numerous showers and thunderstorms through the evening
with the greatest coverage expected across the NC Piedmont.
Nocturnal stabilization and convective overturning should lead to a
gradual decrease in convective intensity and coverage overnight, but
given the deep moisture in place, we could see some weak convection
linger all night.

Now that the vigorous impulse has lifted near the Mason-Dixon Line,
the belt of enhanced shear 25 to 35 kts that we had sitting over our
NW Piedmont have shifted off to the north as well. Thus, expect the
severe threat for the remainder of the afternoon and evening to be
generally isolated. Localized/isolated flooding threat, mainly in
urban/poor drainage areas, will persist across the NC Piedmont as
well. Lows tonight in the 70s.

&&

.SHORT TERM /TUESDAY AND TUESDAY NIGHT/...
As of 325 PM Monday...

The area of low pressure currently SE of Wilmington, which the NHC
is tracking closely for tropical development, will move NE near but
will remain offshore of the NC coast Tuesday and Tuesday night.
The low will drag the front that's currently south of the area into
SE NC on Tuesday. Meanwhile, a wedge of weak high pressure will
extend over the NW Piedmont on Tuesday.

With a moist and moderately unstable airmass in place, the continued
perturbed flow aloft will support scattered showers and storms area-
wide Tuesday afternoon. Modest shear could support an isolated
severe storm or two. Convection will diminish with nocturnal
cooling.

Highs Tuesday will range from lower 80s NW to near 90 SE. Lows 70 to
75.

&&

.LONG TERM /WEDNESDAY THROUGH MONDAY/...
As of 230 PM Monday...

The sub-tropical ridge will extend into the Carolinas through
Wednesday night as an upper level trough swings through the southern
Plains. Meanwhile at the surface, a trough will remain in place over
the Appalachians as a low moves through New England. High pressure
over the Gulf and Bermuda high over the Atlantic will be in place on
Wednesday and linger through Thursday.

The extended forecast period hints at a possible change in the
summertime pattern that has persisted over the region with more
highly amplified troughs digging into the CONUS. A strong low
pressure system will progress east across southern Canada Thursday
and Friday with the upper trough and attendant cold front at the
surface extending south into the northern Plains/MS Valley, surging
east through Friday. As the cold front moves into the mid-Atlantic
Friday/Saturday, the surface trough will shift east and south of the
area while the upper trough remains over the Northeast and mid-
Atlantic. The front will move into central NC from the north,
advecting cooler, drier air into the area before lifting northward
again Sunday/Monday. Medium-range models indicate cold Canadian high
pressure surging southeast through the CONUS Sunday through Monday
as an upper level shortwave swings through and amplifies the trough.
However, the cold front and best CAA are not expected to make it
into the mid-Atlantic.

Temperatures will be slightly above normal and gradually moderating
Wednesday through Friday, with highs in the upper 80s to low 90s and
lows in the low to mid 70s. From Friday night through Monday, expect
a decreasing temperature trend with highs in the low to mid 80s and
lows in the mid to upper 60s by Saturday and Sunday.

&&

.AVIATION /18Z MONDAY THROUGH SATURDAY/...
As of 200 PM Monday...

KINT and KGSO: Though ceilings could briefly lift to low-end VFR this
afternoon, ceilings are expected to remain predominately IFR to MVFR
this afternoon/early evening, before lowering to LIFR overnight,
with areas of fog possible. IFR restrictions in heavy showers and
thunderstorms will also be possible through the evening, before
convection gradually weakens and dissipates overnight. The widespread
LIFR to IFR ceilings will slowly lift to VFR during the early to mid
afternoon with scattered showers and thunderstorms Tuesday afternoon.

KRDU, KFAY, and KRWI: Low-end VFR ceilings are expected this
afternoon with scattered showers and thunderstorms potentially
lingering through the evening and early overnight hours, mainly at
KRDU and KFAY. Additionally, widespread MVFR to IFR ceilings are
expected to develop, with area of fog possible. Ceilings will
gradually to MVFR and then VFR during the mid to late morning hours
with scattered showers and thunderstorms expected across all of
central NC.

Outlook: Isolated to widely scattered diurnal rain chances are
expected Wednesday through Thursday. A cold front moving into the
area from the NW will bring widespread rain chances to the area on
Friday. Additionally, the risk for sub-VFR restrictions in
fog/stratus will be possible each morning.

&&

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

&&

SYNOPSIS...CBL
NEAR TERM...CBL
SHORT TERM...CBL
LONG TERM...KC
AVIATION...CBL

Hazardous Weather Outlook
National Weather Service Raleigh NC
332 PM EDT Mon Aug 31 2020

NCZ011-027-028-042-043-078-089-011945-
Halifax-Nash-Edgecombe-Johnston-Wilson-Wayne-Sampson-
332 PM EDT Mon Aug 31 2020

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...This afternoon and tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Heat indices of 103 to 105 degrees are possible Wednesday, Thursday,
and Friday. A heat advisory may be needed for portions of the area.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ007>010-024>026-040-041-075>077-085-086-088-011945-
Person-Granville-Vance-Warren-Orange-Durham-Franklin-Chatham-Wake-
Moore-Lee-Harnett-Scotland-Hoke-Cumberland-
332 PM EDT Mon Aug 31 2020

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...This afternoon and tonight.

Thunderstorms capable of producing locally damaging winds
are possible through this evening. Additionally isolated heavy
rainfall of 1 to 2 inches could result in flooding in urban and poor
drainage areas.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Heat indices greater than 100 degrees are possible Wednesday,
Thursday, and Friday. A heat advisory may be needed for portions of
the area.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

NCZ021>023-038-039-073-074-083-084-011945-
Forsyth-Guilford-Alamance-Davidson-Randolph-Stanly-Montgomery-Anson-
Richmond-
332 PM EDT Mon Aug 31 2020

This Hazardous Weather Outlook is for central North Carolina.

.DAY ONE...This afternoon and tonight.

Thunderstorms capable of producing locally damaging winds and
possibly an isolated tornado are possible through the evening.
Additionally isolated heavy rainfall of 1 to 2 inches could result in
flooding in urban and poor drainage areas.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

Special Weather Statement
National Weather Service Raleigh NC
536 PM EDT Mon Aug 31 2020

NCZ008-009-312230-
Vance NC-Granville NC-
536 PM EDT Mon Aug 31 2020

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL VANCE AND NORTHEASTERN
GRANVILLE COUNTIES UNTIL 630 PM EDT...

At 535 PM EDT, Doppler radar was tracking a strong thunderstorm near
Oxford, moving east at 15 mph.

Pea size hail and wind gusts up to 40 mph will be possible with this
storm.

Locations impacted include...
Henderson, Oxford, Stovall, Dabney, Satterwhite Point Marina,
Gillburg, Steele Creek Marina & Campground, South Henderson and John
H Kerr Reservoir.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
40 mph are capable of knocking down tree limbs and blowing around
outdoor objects.

Doppler radar has indicated weak rotation with this storm. If the
storm intensifies and rotation strengthens, a warning may need to be
issued.

&&

LAT...LON 3629 7869 3644 7870 3653 7836 3627 7832
TIME...MOT...LOC 2135Z 257DEG 12KT 3637 7865

GIH

Special Weather Statement
National Weather Service Raleigh NC
604 PM EDT Mon Aug 31 2020

NCZ022>024-312300-
Guilford NC-Alamance NC-Orange NC-
604 PM EDT Mon Aug 31 2020

...A STRONG THUNDERSTORM WILL AFFECT ALAMANCE...WESTERN ORANGE AND
EASTERN GUILFORD COUNTIES UNTIL 700 PM EDT...

At 603 PM EDT, Doppler radar was tracking a strong thunderstorm over
Elon, or near Burlington, moving east at 25 mph.

Pea size hail, wind gusts up to 40 mph, and heavy rain producing
minor flooding will be possible with this storm.

Locations impacted include...
Burlington, Graham, Hillsborough, Mebane, Elon, Gibsonville, Haw
River, Swepsonville, Alamance and Carr.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
40 mph are capable of knocking down tree limbs and blowing around
outdoor objects.

Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning, especially in urban areas where prolonged heavy rain
can quickly lead to flooding.

&&

LAT...LON 3592 7960 3624 7961 3624 7917 3611 7911
      3590 7915
TIME...MOT...LOC 2203Z 264DEG 20KT 3608 7953

GIH

Special Weather Statement
National Weather Service Raleigh NC
622 PM EDT Mon Aug 31 2020

NCZ041-042-077-312315-
Johnston NC-Harnett NC-Wake NC-
622 PM EDT Mon Aug 31 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN HARNETT...
SOUTHEASTERN WAKE AND WESTERN JOHNSTON COUNTIES UNTIL 715 PM EDT...

At 621 PM EDT, Doppler radar was tracking a strong thunderstorm near
Angier, or near Lillington, moving northeast at 5 mph. Additional
storms are producing heavy rainfall between Lillington and Garner.

Wind gusts up to 45 mph will be possible with this storm.

Heavy rain and minor flooding will also be possible with this storm.

Locations impacted include...
Raleigh, Smithfield, Lillington, Garner, Fuquay-Varina, Clayton,
Dunn, Angier, Benson and Knightdale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
40 mph are capable of knocking down tree limbs and blowing around
light outdoor objects.

Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways. Drivers are urged to slow down and use
extra caution to avoid hydroplaning.

&&

LAT...LON 3542 7890 3570 7874 3580 7846 3566 7824
      3532 7854 3529 7859
TIME...MOT...LOC 2221Z 205DEG 4KT 3546 7874

10

Special Weather Statement
National Weather Service Raleigh NC
624 PM EDT Mon Aug 31 2020

NCZ009-010-312315-
Vance NC-Warren NC-
624 PM EDT Mon Aug 31 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WARREN AND VANCE
COUNTIES UNTIL 715 PM EDT...

At 622 PM EDT, Doppler radar was tracking a line of strong
thunderstorms along a line extending from 6 miles southwest of
Boydton to near Henderson. Movement was east at 20 mph.

Pea size hail, wind gusts up to 40 mph,and heavy rain with minor
flooding will be possible with these storms.

Locations impacted include...
Henderson, Warrenton, Norlina, Middleburg, Macon, Gillburg, Afton,
Steele Creek Marina & Campground, Kerr Lake, and Lake Gaston.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter in a nearby building or vehicle. Wind gusts as high as
40 mph are capable of knocking down tree limbs and blowing around
outdoor objects.

Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning.

Doppler radar has indicated weak rotation with these storms. If the
storms intensify and rotation strengthens, a warning may need to be
issued.

&&

LAT...LON 3652 7790 3623 7799 3625 7817 3626 7817
      3625 7818 3628 7849 3652 7848 3654 7845
      3654 7790
TIME...MOT...LOC 2222Z 253DEG 16KT 3658 7844 3635 7846

GIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
638 PM EDT MON AUG 31 2020

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

0445 PM     FLASH FLOOD      3 SSE RALEIGH           35.79N 78.64W
08/31/2020                   WAKE               NC   BROADCAST MEDIA

            FLOODING ON N WILMINGTON ST AT POLK STREET
            IN DOWNTOWN RALEIGH. WATER WENT INTO FIRST
            FLOOR OF LOBBY FROM FLOODED ROADWAYS.

&&

CC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
656 PM EDT MON AUG 31 2020

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

0620 PM     FLOOD            1 NNE BURLINGTON        36.09N 79.44W
08/31/2020                   ALAMANCE           NC   911 CALL CENTER

            FLOODING AT S CHURCH ST AND 5TH ST. WATER
            HAS SINCE RECEDED.

&&

CC