Flash Flood Warning 3, NWS Greenville-Spartanburg, SC

757 
WGUS72 KGSP 250023
FFSGSP

Flash Flood Statement
National Weather Service Greenville-Spartanburg SC
823 PM EDT TUE APR 24 2018

NCC119-250145-
/O.CON.KGSP.FF.W.0003.000000T0000Z-180425T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mecklenburg NC-
823 PM EDT TUE APR 24 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM EDT FOR
SOUTHWESTERN MECKLENBURG COUNTY...

At 819 PM EDT, Doppler radar and automated rain gauges indicated 
that heavy rain has fallen over the area.  Flash flooding 
continues across the warned area.

Some locations that will experience flooding include...
Uptown Charlotte, Central Charlotte, Southwest Charlotte, East
Charlotte, Northwest Charlotte, Pineville, Freedom Park, The Plaza,
Charlotte Douglas Airport and Hidden Valley.

The worst areas appear to be along Briar Creek and Little Sugar 
Creek south of downtown Charlotte. Masonic Drive is closed at Briar 
Creek. Many creeks and streams across the area remain high.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Most flood deaths occur in vehicles. Do not attempt to cross
water-covered roadways, bridges, or low-level crossings. Only a few
inches of rapidly flowing water can carry away your vehicle. It is
not worth the risk. Please TURN AROUND, DON'T DROWN.

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

When it is safe to do so, please report flood waters or landslides
flowing over roads or threatening property to the National Weather
Service by calling toll free, 1, 800, 2 6 7, 8 1 0 1, by posting on
our Facebook page, or via Twitter using hashtag NWSGSP. Your message
should describe the event and the specific location where it
occurred, including roadways, nearby cross streets, stream names and
other landmarks.

&&

LAT...LON 3507 8088 3507 8090 3511 8093 3509 8098
      3507 8099 3520 8097 3529 8091 3530 8081
      3524 8070

$$

ARK

Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
615 PM EDT Tue Apr 24 2018

.SYNOPSIS...
A slowly moving low pressure system will exit our region by
late tonight. The atmosphere will dry briefly Wednesday before
another moist area of low pressure crosses the region Thursday
through early Saturday. High pressure builds across our area by the
end of the weekend.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
As of 6pm EST Tuesday:  Showers continue this evening with some
lightning primarily over eastern parts of the CWA.  Short-term
guidance has a decline in shower activity after 8pm, with residual
showers moving out of the area to the northeast.

Overall coverage of shower activity is expected to gradually
diminish into the evening, as upper low continues to wobble toward
the Southern Appalachians, allowing the low level flow to continue
to weaken while shifting to more of a downslope regime.

The surface low will move east of the area tonight, ahead of the
upper low which is forecast to move across western NC overnight. The
result will be shunting of the deeper moisture to our east and north
as the low level flow turns NW/downslope. Precip probabilities
should therefore become increasingly confined to light shower
chances along the TN border, which will persist into Wed, while
skies should begin clearing east of the mtns late tonight through
the morning. Tonight's min temps should be a category or two above
climo in most areas, while highs tomorrow are forecast to be close
to normal.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
As of 220 PM EDT Tuesday: the short term fcst picks up at 00z on
Thursday with a brief flattening of the upper pattern before another
upper trof digs down across Southern Arkansas. The trof axis is
expected to lift up and over the CWFA late Thurs into early Fri as
another trof dives down the backside of the broader upper trof.
This second trof axis is not expected to reach the fcst area until
early Sat, which is just beyond the short term period. At the sfc,
the large low that has been impacting our region will finally lift
northward and over New England. In the low's wake, weak high pressure
will briefly move over the area from the northwest. The high will be
short-lived as another low develops to our west and approaches the
fcst area Thurs afternoon. The operational models are now in much
better agreement with the timing and placement of this low. It is
expected to move over the CWFA late Thurs/early Fri and lift north
of the area late Friday. As for the sensible fcst, PoPs were increased
for the later half of Thurs as the deeper moisture associated with
the low overspreads the CWFA. They remain high thru early Fri morning
and then taper off during the rest of the day. Some sfc-based instability
is present Thurs afternoon/evening, especially over our southern and
eastern zones, so isolated to scattered thunder is included over those
areas. High temps will be about a category below normal for Thurs and
near normal for Fri. Lows are expected to remain a few degrees above
climatology both days.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
As of 230 PM Tuesday: The extended forecast starts at 00z Saturday
with yet another potent shortwave trough rounding the base of the
mean longwave trough over the Southeast states. The medium range
guidance is still not in good agreement on the details of this wave.
The 12z EC still is the further south and least phased of the
deterministic models. It takes the wave all way to the FL Panhandle.
This results in a relatively dry soln. The 12z GFS still on the
wetter side of guidance, keeping showery wx for the area on Saturday
with the shortwave tracking right thru the Carolinas. For now, the
WPC preference is toward the EC soln, and results in only SLGT CHC
PoPs for Saturday. Temps will be near normal.

From Sunday onward, conditions look dry with temps warming above
normal for the start of next week. The eastern trough should finally
start to shift east and an upper ridge will build in from the west.
By next Tuesday, the models are in decent agreement on a fairly
amplified western trough and eastern ridge pattern across the
country. Sfc high pressure will dominate our weather for Monday and
Tuesday.

&&

.AVIATION /22Z TUESDAY THROUGH SUNDAY/...
At KCLT and elsewhere: Scattered to numerous showers continue to
fire this afternoon along and north of a surface boundary extending
across northern SC, with activity primarily concentrated across the
NC foothills in response to a SE upslope flow. An area of weak
instability has developed in the vicinity and especially south of
the boundary, and the intensity of showers has been gradually
increasing over the pass hour or so in these areas. Would expect at
least a few of these to develop into TS, with the best chance for TS
existing at KAND and KCLT, where tempos for -TSRA are carried for a
while this afternoon into the evening. Otherwise, IFR to lMVFR
clouds will persist north of the boundary through much of the
afternoon, although we do expect most sites in these areas to lift
above the IFR level by mid-afternoon. As the flow begins to turn
around to more of a downslope regime, cigs may improve to VFR (or
even scatter by late evening), although ample low level moisture
could allow stratus and/or fog to fill back in overnight, but
overall confidence in flt conditions is fairly low tomorrow morning.
generally E/NE winds will gradually weaken through the evening while
turning toward the NW at most terminals.

Outlook: After very brief drying Wednesday, moisture and unsettled
weather may quickly return Wednesday night into Thursday as a trough
of low pressure redevelops across the eastern part of the country. A
drier cold front will likely cross the region by the early weekend.

Confidence Table...

            22-04Z        04-10Z        10-16Z        16-18Z
KCLT       High  80%     High  83%     Low   56%     High  81%
KGSP       Med   69%     High  91%     Low   38%     High 100%
KAVL       High  94%     High  80%     High  90%     High  84%
KHKY       High  80%     High  80%     Low   45%     High  81%
KGMU       Med   69%     High 100%     Low   55%     High 100%
KAND       High  97%     High 100%     High 100%     High 100%

The percentage reflects the number of guidance members agreeing
with the scheduled TAF issuance flight rule category. Complete hourly
experimental aviation forecast consistency tables and ensemble forecasts
are available at the following link:

www.weather.gov/gsp/aviation

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...None.
SC...None.

&&

SYNOPSIS...Carroll
NEAR TERM...JDL/WJM
SHORT TERM...JPT
LONG TERM...ARK
AVIATION...JDL

Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
422 PM EDT Tue Apr 24 2018

GAZ010-017-018-026-028-029-NCZ035>037-056-057-068>072-082-502-504-
506-508-510-SCZ001>014-019-252030-
Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Alexander-Iredell-
Davie-Catawba-Rowan-Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-
Union-Greater Caldwell-Greater Burke-Eastern McDowell-
Greater Rutherford-Eastern Polk-Oconee Mountains-Pickens Mountains-
Greenville Mountains-Greater Oconee-Greater Pickens-
Greater Greenville-Spartanburg-Cherokee-York-Anderson-Abbeville-
Laurens-Chester-Greenwood-
422 PM EDT Tue Apr 24 2018

This Hazardous Weather Outlook is for northeast Georgia, piedmont
North Carolina, western North Carolina and upstate South Carolina.

.DAY ONE...Tonight.

Moderate rainfall will continue at times over the area this evening.
Isolated flooding may develop in low-lying and flood prone areas.
In addition, isolated to scattered thunderstorms may develop and
produce occasional cloud-to-ground lightning and gusty winds.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

..Wednesday...No hazardous weather is expected at this time.
..Thursday...No hazardous weather is expected at this time.
..Friday...No hazardous weather is expected at this time.
..Saturday...No hazardous weather is expected at this time.
..Sunday...No hazardous weather is expected at this time.
..Monday...No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Skywarn spotters are requested to forward any reports of hail,
damaging winds, and flooding to our office.

NCZ033-048>053-058-059-062>065-501-503-505-507-509-252030-
Avery-Madison-Yancey-Mitchell-Swain-Haywood-Buncombe-Graham-
Northern Jackson-Macon-Southern Jackson-Transylvania-Henderson-
Caldwell Mountains-Burke Mountains-McDowell Mountains-
Rutherford Mountains-Polk Mountains-
422 PM EDT Tue Apr 24 2018

This Hazardous Weather Outlook is for western North Carolina.

.DAY ONE...Tonight.

Moderate rainfall will continue at times over the area tonight.
Isolated flooding may develop in low-lying and flood prone areas.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

..Wednesday...No hazardous weather is expected at this time.
..Thursday...No hazardous weather is expected at this time.
..Friday...No hazardous weather is expected at this time.
..Saturday...No hazardous weather is expected at this time.
..Sunday...No hazardous weather is expected at this time.
..Monday...No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Skywarn spotters are requested to forward any reports of flooding to
our office.

JPT

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
443 PM EDT TUE APR 24 2018

NCZ071-242115-
Mecklenburg NC-
443 PM EDT TUE APR 24 2018

...A THUNDERSTORM WITH TORRENTIAL RAINFALL WILL IMPACT MECKLENBURG
COUNTY UNTIL 515 PM EDT...

At 442 PM EDT, Doppler radar was tracking a thunderstorm with
torrential rainfall near Uptown Charlotte, or near Central Charlotte,
moving northeast at 20 mph.

Locations to be impacted include...
Uptown Charlotte, Huntersville, Central Charlotte, South Charlotte,
Northeast Charlotte, Southwest Charlotte, East Charlotte, Northwest
Charlotte, Mint Hill and Pineville.

Very heavy rainfall rates up to 2 inches per hour will be possible in
these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall may flood areas with poor drainage, such as
ditches and underpasses. Avoid these areas and do not cross flooded
roads. Water levels of small streams may also rise rapidly. Seek
higher ground if threatened by flood waters.

&&

LAT...LON 3501 8085 3511 8093 3510 8094 3517 8101
      3525 8101 3534 8098 3536 8092 3538 8096
      3537 8097 3539 8097 3539 8095 3541 8096
      3544 8095 3530 8067 3526 8066 3523 8059
      3522 8060
TIME...MOT...LOC 2042Z 225DEG 15KT 3519 8089

ARK

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
516 PM EDT TUE APR 24 2018

NCZ071-072-242145-
Mecklenburg NC-Cabarrus NC-
516 PM EDT TUE APR 24 2018

...A THUNDERSTORM WITH TORRENTIAL RAINFALL WILL IMPACT CENTRAL
CABARRUS AND NORTHEASTERN MECKLENBURG COUNTIES UNTIL 545 PM EDT...

At 515 PM EDT, Doppler radar was tracking a thunderstorm with
torrential rainfall 8 miles northeast of Uptown Charlotte, or over
Reedy Creek Park, moving northeast at 20 mph.

Locations to be impacted include...
Downtown Concord, Kannapolis, Northeast Charlotte, East Charlotte,
West Concord, Mint Hill, Harrisburg, Reedy Creek Park, Charlotte
Motor Speedway and UNC Charlotte.

Very heavy rainfall rates up to 2 inches per hour will be possible in
these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall may flood areas with poor drainage, such as
ditches and underpasses. Avoid these areas and do not cross flooded
roads. Water levels of small streams may also rise rapidly. Seek
higher ground if threatened by flood waters.

&&

LAT...LON 3525 8046 3520 8054 3521 8055 3517 8059
      3512 8068 3530 8084 3551 8079 3551 8074
      3533 8041
TIME...MOT...LOC 2115Z 234DEG 18KT 3528 8071

ARK

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
549 PM EDT TUE APR 24 2018

NCZ057-072-242215-
Rowan NC-Cabarrus NC-
549 PM EDT TUE APR 24 2018

...A THUNDERSTORM WITH TORRENTIAL RAINFALL WILL IMPACT CABARRUS AND
SOUTHWESTERN ROWAN COUNTIES UNTIL 615 PM EDT...

At 549 PM EDT, Doppler radar was tracking a thunderstorm with
torrential rainfall near Downtown Concord, moving northeast at 15
mph.

Locations to be impacted include...
Kannapolis, Downtown Concord, West Concord, Harrisburg, Landis,
Enochville, Mt Pleasant, Midland, Coddle Creek Reservoir and
Charlotte Motor Speedway.

Very heavy rainfall rates up to 2 inches per hour will be possible in
these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall may flood areas with poor drainage, such as
ditches and underpasses. Avoid these areas and do not cross flooded
roads. Water levels of small streams may also rise rapidly. Seek
higher ground if threatened by flood waters.

&&

LAT...LON 3521 8048 3519 8051 3520 8052 3523 8060
      3527 8066 3530 8068 3535 8069 3537 8072
      3539 8074 3561 8067 3543 8034
TIME...MOT...LOC 2149Z 237DEG 14KT 3535 8060

ARK

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
627 PM EDT TUE APR 24 2018

NCZ057-072-242315-
Rowan NC-Cabarrus NC-
627 PM EDT TUE APR 24 2018

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN CABARRUS AND
SOUTHEASTERN ROWAN COUNTIES UNTIL 715 PM EDT...

At 627 PM EDT, Doppler radar was tracking a strong thunderstorm 11
miles northeast of Downtown Concord, or 5 miles south of Rockwell,
moving northeast at 20 mph.

Locations to be impacted include...
Kannapolis, Downtown Concord, Rockwell, Mt Pleasant, Faith, High Rock
Lake, Granite Quarry and Gold Hill.

Wind gusts up to 45 mph and very heavy rainfall rates up to 2 inches
per hour will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Gusty winds can blow down trees that are dead, or that have weakened
root systems. Outdoor furniture and similar items can be tossed
around if not anchored. Seek shelter indoors.

Torrential rainfall may flood areas with poor drainage, such as
ditches and underpasses. Avoid these areas and do not cross flooded
roads. Water levels of small streams may also rise rapidly. Seek
higher ground if threatened by flood waters.

&&

LAT...LON 3550 8029 3534 8040 3531 8048 3552 8063
      3566 8031 3563 8029 3563 8027 3558 8021
      3555 8021 3554 8020 3553 8020 3551 8018
TIME...MOT...LOC 2227Z 242DEG 16KT 3548 8041

ARK