Alert archive / South Carolina / Flash Flood Warnings in 2024

Flash Flood Warning 11, NWS Charleston, SC

August 6, 2024Berkeley County, Charleston County, South Carolina

NWS Charleston, SC issued this flash flood warning at Aug 6, 2024, 6:34 AM EDT for Berkeley County, Charleston County, South Carolina. It was in force for 15 hr. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 6, 2024, 6:34 AM EDT (10:34 UTC)
Expired
Aug 6, 2024, 9:48 PM EDT
In force
15 hr
Issued by
NWS Charleston, SC
Area
Storm-based polygon
Flood severity
None

Counties Berkeley County, SC, Charleston County, SC

The radar

The Charleston,SC radar (KCLX), 132 km from the middle of the area, began a volume at 10:39 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.

What was reported inside it

TimeReportWhereRemark
Aug 6, 1:10 PM EDTFLASH FLOOD5 Nnw Wando, SCThe river gauge at French Quarter Creek near Huger reached the moderate flood stage of 11.5 ft. This is the level where flash flooding begins along the creek.
Aug 6, 2:20 PM EDTFLOOD7 E Cainhoy, SCHighway 17 northbound near Seewee Road is closed due to flooding. In addition, Guerins Bridge Road is impassable due to flooding.
Aug 6, 3:57 PM EDTFLASH FLOOD5 E Moncks Corner, SCBerkeley County Emergency Management reports a washout of Cane Gulley Road near Highway 402.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this flash flood warning; the first came 396 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 10.6 hours before the alert went out and 49 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Charleston AFB, SC at 00:00Z on 2024-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 178 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 00:00Z on 2024-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 175 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
178 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
620 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
175 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.1

Open this sounding in Storm Lab

The text

As transmitted.

507 
WGUS52 KCHS 061034
FFWCHS
SCC015-019-061500-
/O.NEW.KCHS.FF.W.0011.240806T1034Z-240806T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston SC
634 AM EDT Tue Aug 6 2024

The National Weather Service in Charleston has issued a

* Flash Flood Warning for...
  Berkeley County in southeastern South Carolina...
  Charleston County in southeastern South Carolina...

* Until 1100 AM EDT.

* At 634 AM EDT, Doppler radar indicated heavy rain across the 
  warned area. Between 2 and 5 inches of rain have fallen. Flash 
  flooding is ongoing or expected to begin shortly. Additional heavy 
  rainfall is expected over the next several days.

  HAZARD...Flash flooding caused by heavy rain.

  SOURCE...Radar indicated.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Mount Pleasant, Moncks Corner, McClellanville, Saint Stephen, 
  Awendaw, Bonneau, Jamestown, Huger, Old Santee Canal State Park 
  and Pinopolis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3351 8003 3349 8000 3351 8000 3345 7989
      3339 7984 3338 7978 3333 7976 3327 7957
      3316 7935 3313 7927 3301 7936 3300 7949
      3285 7963 3326 8031 3330 8025 3344 8022
      3346 8016 3345 8014 3348 8015 3350 8012

FLASH FLOOD...RADAR INDICATED

$$

CB
6 follow-up statements
872 
WGUS52 KCHS 061434
FFWCHS
SCC015-019-061800-
/O.EXT.KCHS.FF.W.0011.000000T0000Z-240806T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston SC
1034 AM EDT Tue Aug 6 2024

The National Weather Service in Charleston has extended the

* Flash Flood Warning for...
  Berkeley County in southeastern South Carolina...
  Charleston County in southeastern South Carolina...

* Until 200 PM EDT.

* At 1034 AM EDT, Doppler radar indicated moderate to locally heavy 
  rains falling across northern portions of Berkeley and upper 
  Charleston Counties. As much as 3 to 8 inches of rain has fallen 
  and an additional 2 to 4 inches of rain could fall through early 
  afternoon. The risk for flash flooding continues.

  HAZARD...Flash flooding caused by heavy rain.

  SOURCE...Radar indicated.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Mount Pleasant, Moncks Corner, McClellanville, Saint Stephen, 
  Awendaw, Bonneau, Jamestown, Huger, Old Santee Canal State Park 
  and Pinopolis.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3351 8003 3349 8000 3351 8000 3345 7989
      3339 7984 3338 7978 3333 7976 3327 7957
      3316 7935 3313 7927 3301 7936 3300 7949
      3285 7963 3326 8031 3330 8025 3344 8022
      3346 8016 3345 8014 3348 8015 3350 8012

FLASH FLOOD...RADAR INDICATED

$$

ST
328 
WGUS72 KCHS 061527
FFSCHS

Flash Flood Statement
National Weather Service Charleston SC
1127 AM EDT Tue Aug 6 2024

SCC015-019-061800-
/O.CON.KCHS.FF.W.0011.000000T0000Z-240806T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berkeley SC-Charleston SC-
1127 AM EDT Tue Aug 6 2024

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 2 PM EDT THIS 
AFTERNOON FOR BERKELEY AND CHARLESTON COUNTIES...

At 1127 AM EDT, Doppler radar indicated moderate to locally heavy 
rains falling across northern portions of Berkeley and upper 
Charleston Counties. As much as 3 to 8 inches of rain has fallen and 
an additional 2 to 4 inches of rain could fall through early 
afternoon. The risk for flash flooding continues.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Radar indicated.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Mount Pleasant, Moncks Corner, McClellanville, Saint Stephen, 
  Awendaw, Bonneau, Jamestown, Huger, Old Santee Canal State Park 
  and Pinopolis.

Water levels along French Quarter Creek near Huger are slowly rising 
late this morning. Levels will continue to rise through the 
afternoon and people along that creek should monitor water levels 
closely as flash flooding is possible, especially for areas long 
French Quarter Creek road.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3351 8003 3349 8000 3351 8000 3345 7989
      3339 7984 3338 7978 3333 7976 3327 7957
      3316 7935 3313 7927 3301 7936 3300 7949
      3285 7963 3326 8031 3330 8025 3344 8022
      3346 8016 3345 8014 3348 8015 3350 8012

FLASH FLOOD...RADAR INDICATED

$$

ST
587 
WGUS52 KCHS 061553
FFWCHS
SCC015-019-062000-
/O.EXT.KCHS.FF.W.0011.000000T0000Z-240806T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston SC
1153 AM EDT Tue Aug 6 2024

The National Weather Service in Charleston has extended the

* Flash Flood Warning for...
  Berkeley County in southeastern South Carolina...
  Charleston County in southeastern South Carolina...

* Until 400 PM EDT.

* At 1153 AM EDT, Doppler radar indicated bands of moderate to heavy 
  rainfall moving across northern portions of Berkeley and upper 
  Charleston Counties. As much as 3 to 8 inches of rain has fallen 
  and an additional 2 to 4 inches of rain could fall through early 
  afternoon. The risk for flash flooding continues. Berkeley County 
  Emergency Management recently reported a number of road closures 
  due to flash flooding with water approaching the tops of porches 
  of homes in some areas.

  HAZARD...Life threatening flash flooding. Heavy rain producing
           flash flooding.

  SOURCE...Radar indicated.

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

* Some locations that will experience flash flooding include...
  Mount Pleasant, Moncks Corner, McClellanville, Saint Stephen, 
  Awendaw, Bonneau, Jamestown, Huger, Old Santee Canal State Park 
  and Pinopolis.

Water levels along French Quarter Creek near Huger are slowly rising 
late this morning. Levels will continue to rise through the 
afternoon and people along that creek should monitor water levels 
closely as flash flooding is possible, especially for areas long 
French Quarter Creek road.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3351 8003 3349 8000 3351 8000 3345 7989
      3339 7984 3338 7978 3333 7976 3327 7957
      3316 7935 3313 7927 3301 7936 3300 7949
      3285 7963 3326 8031 3330 8025 3344 8022
      3346 8016 3345 8014 3348 8015 3350 8012

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

$$

ST
533 
WGUS52 KCHS 061938
FFWCHS
SCC015-019-070200-
/O.EXT.KCHS.FF.W.0011.000000T0000Z-240807T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston SC
338 PM EDT Tue Aug 6 2024

The National Weather Service in Charleston has extended the

* Flash Flood Warning for...
  Berkeley County in southeastern South Carolina...
  Charleston County in southeastern South Carolina...

* Until 1000 PM EDT Tuesday.

* At 338 PM EDT, Doppler radar indicated bands of moderate to heavy 
  rainfall moving across northern portions of Berkeley and upper 
  Charleston Counties. As much as 3 to 8 inches of rain has fallen 
  and an additional 1 to 3 inches of rain could fall through early 
  afternoon. The risk for flash flooding continues. Berkeley County 
  Emergency Management has reported a number of road closures due to 
  flash flooding with water approaching the tops of porches of homes 
  in some areas.

  HAZARD...Life threatening flash flooding. Heavy rain producing
           flash flooding.

  SOURCE...Radar indicated.

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

* Some locations that will experience flash flooding include...
  Mount Pleasant, Moncks Corner, McClellanville, Saint Stephen, 
  Awendaw, Bonneau, Jamestown, Huger, Old Santee Canal State Park 
  and Pinopolis.

Water levels along French Quarter Creek near Huger are slowly rising 
and approaching the major flood stage. Levels will continue to 
slowly rise through this evening and flash flooding is likely. At 
major flood stage, extensive and significant flooding will occur 
along French Quarter Creek. The first level of many homes along 
French Quarter Creek will be inundated with 1 to 2 feet of water. 
Impacts will be most significant in homes built at ground level. 
French Quarter Creek Road will be flooded and some sections of the 
road could be under a foot or more of water, making the road 
impassable.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3351 8003 3349 8000 3351 8000 3345 7989
      3339 7984 3338 7978 3333 7976 3327 7957
      3316 7935 3313 7927 3301 7936 3300 7949
      3285 7963 3326 8031 3330 8025 3344 8022
      3346 8016 3345 8014 3348 8015 3350 8012

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

$$

ST
436 
WGUS72 KCHS 062012
FFSCHS

Flash Flood Statement
National Weather Service Charleston SC
412 PM EDT Tue Aug 6 2024

SCC015-019-070200-
/O.CON.KCHS.FF.W.0011.000000T0000Z-240807T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berkeley SC-Charleston SC-
412 PM EDT Tue Aug 6 2024

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 10 PM EDT THIS 
EVENING FOR BERKELEY AND CHARLESTON COUNTIES...
...FRENCH QUARTER CREEK NEAR HUGER HAS REACHED MAJOR FLOOD STAGE...

At 412 PM EDT, Doppler radar indicated bands of moderate to heavy 
rainfall moving across northern portions of Berkeley and upper 
Charleston Counties. As much as 3 to 8 inches of rain has fallen and 
an additional 1 to 3 inches of rain could fall through early 
afternoon. The risk for flash flooding continues. Berkeley County 
Emergency Management has reported a number of road closures due to 
flash flooding with water approaching the tops of porches of homes 
in some areas.

HAZARD...Life threatening flash flooding. Heavy rain producing
         flash flooding.

SOURCE...Radar indicated.

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

Some locations that will experience flash flooding include...
  Mount Pleasant, Moncks Corner, McClellanville, Saint Stephen, 
  Awendaw, Bonneau, Jamestown, Huger, Old Santee Canal State Park 
  and Pinopolis.

Water levels along French Quarter Creek near Huger has reached major 
flood stage. Levels will continue to slowly rise through this 
evening and flash flooding is likely. At major flood stage, 
extensive and significant flooding will occur along French Quarter 
Creek. The first level of many homes along French Quarter Creek will 
be inundated with 1 to 2 feet of water. Impacts will be most 
significant in homes built at ground level. French Quarter Creek 
Road will be flooded and some sections of the road could be under a 
foot or more of water, making the road impassable.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3351 8003 3349 8000 3351 8000 3345 7989
      3339 7984 3338 7978 3333 7976 3327 7957
      3316 7935 3313 7927 3301 7936 3300 7949
      3285 7963 3326 8031 3330 8025 3344 8022
      3346 8016 3345 8014 3348 8015 3350 8012

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

$$

ST
728 
WGUS72 KCHS 070148
FFSCHS

Flash Flood Statement
National Weather Service Charleston SC
948 PM EDT Tue Aug 6 2024

SCC015-019-070158-
/O.CAN.KCHS.FF.W.0011.000000T0000Z-240807T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berkeley SC-Charleston SC-
948 PM EDT Tue Aug 6 2024

...FLASH FLOOD WARNING FOR BERKELEY AND CHARLESTON COUNTIES HAS BEEN 
REPLACED WITH A FLOOD WARNING...

&&

LAT...LON 3351 8003 3349 8000 3351 8000 3345 7989
      3339 7984 3338 7978 3333 7976 3327 7957
      3316 7935 3313 7927 3301 7936 3300 7949
      3285 7963 3326 8031 3330 8025 3344 8022
      3346 8016 3345 8014 3348 8015 3350 8012

$$

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Charleston, SC wrote its last area forecast discussion before this flash flood warning went out at Aug 6, 6:10 AM EDT, 24 minutes earlier.

Area forecast discussion, Aug 6, 6:10 AM EDT, 24 minutes before
Area Forecast Discussion
National Weather Service Charleston SC
610 AM EDT Tue Aug 6 2024

.SYNOPSIS...
Tropical Storm Debby will impact the region through much of the
week. Potentially historic rainfall amounts will likely result
in severe to catastrophic flash flooding.

&&

.NEAR TERM /THROUGH TONIGHT/...
Today and Tonight: Weather impacts experienced locally will remain
highly dependent on the track/position of Tropical Storm Debby,
which is anticipated to track very slowly northeast across Southeast
Georgia this morning, before shifting off the Georgia coast this
afternoon, then slowing across the Gulf Stream overnight while
encountering the Atlantic ridge. The latest forecast track for Debby
will continue to place much of the local area in the northeast
quadrant today, with a warm onshore flow and a large plume of
tropical moisture advecting across the area. The environment will
remain primed for heavy rainfall, with modest CAPE and PWATs
remaining between 2.5-2.8 inches supporting bands of showers and/or
thunderstorms wrapping around the northern extent of Debby. Given 5-
10 inches of rainfall occurring overnight and many areas expected to
see additional rains today (some 3-5 inches), flash flooding is
likely as rainbands shift onshore, particularly across Southeast
South Carolina, although additional rains will also attempt to
develop with moisture that wraps around the western edge of Debby as
it begins to shift offshore early. A Flash Flood Watch will continue
for the entire area given the setup (including across Southeast
Georgia counties). See the Hydrology section below for additional
hydrologic details. Heading into the overnight period, some drier
air should begin to wrap into the western side of Debby as the
system shifts offshore, reducing rain/shower coverage and the
potential for flash flooding, especially across inland areas of
Southeast Georgia.

Outside of heavy rainfall concerns, there will continue to be an
isolated tornado risk across parts of Southeast South Carolina as
bands of showers and thunderstorms push onshore from the nearby
Atlantic within a pronounced axis of instability and shear that
shifts north with time and eventually out of the local area. This
environment has already been responsible for producing a few
tornadoes overnight and could continue to support tornadoes this
morning into perhaps early afternoon hours, which is aligned fairly
well with the latest HREF updraft helicity tracks/ensemble
paintball. Currently, a Tornado Watch remains in effect for parts of
Southeast South Carolina until 7 AM. Additional Tornado Watches
could eventually be needed.

A Tropical Storm Warning remains in effect for the Southeast Georgia
and Southeast South Carolina coast, and also includes much of
Southeast Georgia. Refer to the latest Hurricane Local Statement
(HLS product) for the latest on current tropical headlines.

&&

.SHORT TERM /WEDNESDAY THROUGH FRIDAY/...
The latest NHC track indicates the center of Tropical Storm Debby
will be off the Georgia and South Carolina coasts at the start of
the period. Debby is expected to meander offshore and then slowly
track northward and potentially strengthen until making landfall
somewhere along the South Carolina coast on Thursday.

The primary concern will continue to be the rainfall. On top of the
several inches of rain that has fallen already, periods of heavy
rainfall is expected to continue into at least Thursday. Refer to
the hydrology section below for more information.

Based on the current track, the tornado threat Wednesday and beyond
will be much lower. Otherwise, potential for tropical storm force
winds persist and Tropical Storm Warnings remain in effect for all
coastal counties as well as southeast Georgia inland counties.

Still some uncertainty late week, but as we move into Friday, Debby
should be lifting further away from the local area into North
Carolina. If this track holds, heavy rain threat should start coming
to a close.

&&

.LONG TERM /FRIDAY NIGHT THROUGH MONDAY/...
Less active weather is expected as we head into the weekend as Debby
pulls away. Should transition back to a more typical summertime
pattern with isolated to scattered diurnal shower/thunderstorm
chances. Temperatures are forecast to be within a few degrees of
normal.

&&

.AVIATION /10Z TUESDAY THROUGH SATURDAY/...
KCHS/KJZI/KSAV: Steady rains will continue to impact all terminals
into Tuesday morning as bands of showers and thunderstorms wrap
around the northeast edge of Tropical Storm Debby drawing slowly
closer to the Georgia coast. Prevailing MVFR/IFR conditions will
persist through the night, with perhaps some improvement in cigs
heading through Tuesday afternoon. Vsbys remain limited to 1/2SM at
times as rain/showers directly impact the terminals, especially at
the JZI and CHS terminals tonight. There is also a risk for low-
level wind shear at all terminals tonight into through much of
Tuesday afternoon.

Extended Aviation Outlook: Prolonged periods of flight restrictions
are expected through much of the week as Debby impacts the region.

&&

.MARINE...
Today and Tonight: Tropical Storm conditions will likely persist for
much of the day and overnight as Debby makes way to the Georgia
coast early afternoon, then shifts offshore and slows across the
Gulf Stream overnight while encountering the Atlantic ridge. This
track continues to place much of the South Carolina coastal waters
in the northeast quadrant of Debby this morning into early
afternoon, producing a risk for waterspouts with bands of showers
and thunderstorms along a pronounced axis of instability and shear.
A Tornado Watch remains in effect for until 7 AM for all South
Carolina waters, including the Charleston Harbor. Additional Tornado
Watches could be needed as the threat is slow to move north of local
waters this morning.

Wednesday through Saturday: The latest NHC forecast indicates
Tropical Storm Debby will be over or near the coastal waters on
Wednesday. Debby should slowly track northward while potentially
strengthening before making landfall somewhere along the South
Carolina coast on Thursday. Hazardous marine conditions are expected
to continue with tropical storm force winds and very elevated seas.
A Tropical Storm Warning remains in effect for all coastal waters,
including the Charleston Harbor. Conditions should improve as we
head into the weekend and Debby pulls further away.

Rip Currents/High Surf: Hazardous beach conditions are expected
through much of the week as Debby impacts the region. A High Risk of
rip currents is forecast today through Wednesday, and will likely
continue beyond. In addition, large breaking waves will impact
the beaches.

&&

.HYDROLOGY...
Debby remains on target to potentially produce historic rainfall
amounts that will result in areas of catastrophic flooding across
southeast Georgia and southeast South Carolina. A Flood Watch
remains in effect for all of southeast Georgia and southeast South
Carolina through Friday morning and Flood Advisories/Flash Flood
Warnings will continue to be issued as needed.

The center of Debby is forecast to slowly move off the Georgia coast
later today, potentially strengthening and bringing additional
intense rainfall to areas within the main core of the system. The
combination of deep tropical moisture and a slowly moving tropical
system will set the table for a prolonged period of intense
rainfall. Radar estimates show most of the area has received 5-10
inches of rain so far, with some locations receiving near 15 inches.
The forecast advertises additional rainfall amounts of 10-20 inches
over southeast South Carolina and 5-10 inches over southeast
Georgia. Even more concerning is that the swath of heaviest
rain is likely to fall along the coastal corridor, including
heavily urbanized areas across Savannah, Hilton Head, Beaufort,
and Charleston. The entire forecast area remains in a rare High
Risk in the Excessive Rainfall Outlook today from the Weather
Prediction Center, and the northern part of the forecast area
through Thursday...further highlighting the potential for
widespread damaging flash flooding.

With these expected rainfall totals, impacts will be widespread and
severe, likely including numerous flooded homes and structures,
damage to roadways including washouts, and unprecedented flooding
along and near smaller creeks and streams. Additionally, there will
likely be an extended period of major flooding (possibly record
setting) along larger main stem rivers that continues well after
Debby moves away from the region. The most intense rainfall will
likely come in bands followed by periods of time of considerably
lighter rainfall or even no rain at all.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...Tropical Storm Warning for GAZ099>101-114>119-137>141.
     Flood Watch through Friday morning for GAZ087-088-099>101-
     114>119-137>141.
     High Risk for Rip Currents through this evening for GAZ117-119-139-
     141.
     Storm Surge Warning for GAZ117-119-139-141.
SC...Tropical Storm Warning for SCZ045-047>052.
     Flood Watch through Friday morning for SCZ040-042>045-047>052.
     High Risk for Rip Currents through this evening for SCZ048>051.
     Storm Surge Warning for SCZ048>052.
MARINE...Tropical Storm Warning for AMZ330-350-352-354-374.
&&

NEAR TERM...
SHORT TERM...
LONG TERM...
AVIATION...
MARINE...
Hazardous weather outlook, Aug 6, 5:38 AM EDT, 56 minutes before
Hazardous Weather Outlook
National Weather Service Charleston SC
538 AM EDT Tue Aug 6 2024

GAZ099>101-114>116-118-137-138-140-070945-
Candler-Bulloch-Effingham-Tattnall-Evans-Inland Bryan-Inland Chatham-
Long-Inland Liberty-Inland McIntosh-
538 AM EDT Tue Aug 6 2024

...FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING...
...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for southeast Georgia.

.DAY ONE...Today and tonight.

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

   Flood Watch.
   Tropical Storm Warning.

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

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

   Flood Watch.
   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Spotter assistance is not anticipated at this time.

GAZ087-088-SCZ040-042-070945-
Jenkins-Screven-Allendale-Hampton-
538 AM EDT Tue Aug 6 2024

...FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING...

This Hazardous Weather Outlook is for southeast Georgia and
southeast South Carolina.

.DAY ONE...Today and tonight.

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

   Flood Watch.

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

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

   Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter assistance is not anticipated at this time.

GAZ117-119-139-141-070945-
Coastal Bryan-Coastal Chatham-Coastal Liberty-Coastal McIntosh-
538 AM EDT Tue Aug 6 2024

...FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING...
...HIGH RISK FOR RIP CURRENTS IN EFFECT THROUGH THIS EVENING...
...STORM SURGE WARNING IN EFFECT...
...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for southeast Georgia.

.DAY ONE...Today and tonight.

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

   Flood Watch.
   High Risk for Rip Currents.
   Storm Surge Warning.
   Tropical Storm Warning.

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

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

   Flood Watch.
   Storm Surge Warning.
   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Please relay any reports of hazardous weather including, but not
limited to large hail, damaging winds and flooding to the National
Weather Service in Charleston at 1-888-383-2024.

SCZ045-047-070945-
Inland Berkeley-Inland Jasper-
538 AM EDT Tue Aug 6 2024

...FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING...
...TORNADO WATCH 602 IN EFFECT UNTIL 7 AM EDT THIS MORNING...
...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for southeast South Carolina.

.DAY ONE...Today and tonight.

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

   Flood Watch.
   Tornado Watch.
   Tropical Storm Warning.

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

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

   Flood Watch.
   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Please relay any reports of hazardous weather including, but not
limited to large hail, damaging winds and flooding to the National
Weather Service in Charleston at 1-888-383-2024.

SCZ048>051-070945-
Beaufort-Coastal Colleton-Charleston-Coastal Jasper-
538 AM EDT Tue Aug 6 2024

...FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING...
...TORNADO WATCH 602 IN EFFECT UNTIL 7 AM EDT THIS MORNING...
...HIGH RISK FOR RIP CURRENTS IN EFFECT THROUGH THIS EVENING...
...STORM SURGE WARNING IN EFFECT...
...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for southeast South Carolina.

.DAY ONE...Today and tonight.

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

   Flood Watch.
   High Risk for Rip Currents.
   Tornado Watch.
   Storm Surge Warning.
   Tropical Storm Warning.

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

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

   Flood Watch.
   Storm Surge Warning.
   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Please relay any reports of hazardous weather including, but not
limited to large hail, damaging winds and flooding to the National
Weather Service in Charleston at 1-888-383-2024.

SCZ043-044-070945-
Inland Colleton-Dorchester-
538 AM EDT Tue Aug 6 2024

...FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING...
...TORNADO WATCH 602 IN EFFECT UNTIL 7 AM EDT THIS MORNING...

This Hazardous Weather Outlook is for southeast South Carolina.

.DAY ONE...Today and tonight.

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

   Flood Watch.
   Tornado Watch.

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

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

   Flood Watch.

Tropics: Tropical storm force winds will be possible Wednesday into
Thursday as Debby moves through the area. Tropical Storm Watches and
Warnings could be needed.

.SPOTTER INFORMATION STATEMENT...

Please relay any reports of hazardous weather including, but not
limited to large hail, damaging winds and flooding to the National
Weather Service in Charleston at 1-888-383-2024.

AMZ330-350-352-070945-
Charleston Harbor-
Waters from South Santee River to Edisto Beach SC out 20 NM-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
538 AM EDT Tue Aug 6 2024

...TORNADO WATCH 602 IN EFFECT UNTIL 7 AM EDT THIS MORNING...
...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Today and tonight.

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

   Tornado Watch.
   Tropical Storm Warning.

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

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

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Please relay any reports of hazardous weather including, but not
limited to large hail, damaging winds and flooding to the National
Weather Service in Charleston at 1-888-383-2024.

AMZ354-374-070945-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
538 AM EDT Tue Aug 6 2024

...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...Today and tonight.

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

   Tropical Storm Warning.

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

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

   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Please relay any reports of hazardous weather including, but not
limited to large hail, damaging winds and flooding to the National
Weather Service in Charleston at 1-888-383-2024.

SCZ052-070945-
Tidal Berkeley-
538 AM EDT Tue Aug 6 2024

...FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING...
...TORNADO WATCH 602 IN EFFECT UNTIL 7 AM EDT THIS MORNING...
...STORM SURGE WARNING IN EFFECT...
...TROPICAL STORM WARNING IN EFFECT...

This Hazardous Weather Outlook is for southeast South Carolina.

.DAY ONE...Today and tonight.

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

   Flood Watch.
   Tornado Watch.
   Storm Surge Warning.
   Tropical Storm Warning.

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

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

   Flood Watch.
   Storm Surge Warning.
   Tropical Storm Warning.

.SPOTTER INFORMATION STATEMENT...

Please relay any reports of hazardous weather including, but not
limited to large hail, damaging winds and flooding to the National
Weather Service in Charleston at 1-888-383-2024.

In the hours before

Local storm report, Aug 6, 5:33 AM EDT, 1 hour 1 minute before
Preliminary Local Storm Report
National Weather Service Charleston SC
533 AM EDT Tue Aug 06 2024

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

1225 AM     Tropical Cyclone 4 ENE Sullivans Island  32.80N  79.77W
08/06/2024                   Charleston         SC   Law Enforcement

            Isle of Palms Police Department reported wind damage on
            Hartnett Blvd from Tropical Storm Debby. Pictures from
            social media indicate multiple trees and power lines
            down, and flooded roadways.

&&

Event Number CHS2400907

ACD
Local storm report, Aug 6, 5:38 AM EDT, 56 minutes before
Preliminary Local Storm Report...Corrected
National Weather Service Charleston SC
538 AM EDT Tue Aug 06 2024

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

0254 AM     Tornado          2 ENE Moncks Corner     33.20N  79.98W
08/06/2024                   Berkeley           SC   Emergency Mngr

            Berkeley County EM reported a tornado on the eastern
            side of Moncks Corner. An Applebees was damaged. Several
            trees and power poles were blown down, some onto cars.
            At least one car was flipped over. Significant damage to
            an Arby's was reported (windows shattered and parts of
            the roof torn off). A truck was flipped over on its
            side.

&&

Corrected remarks

Event Number CHS2400897

ACD
Local storm report, Aug 6, 5:42 AM EDT, 52 minutes before
Preliminary Local Storm Report...Corrected
National Weather Service Charleston SC
542 AM EDT Tue Aug 06 2024

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

0254 AM     Tornado          2 ENE Moncks Corner     33.20N  79.98W
08/06/2024                   Berkeley           SC   Emergency Mngr

            Berkeley County EM reported a tornado on the eastern
            side of Moncks Corner. An Applebees was damaged. Several
            trees and power poles were blown down, some onto cars.
            At least one car was flipped over. Significant damage to
            an Arby's was reported (windows shattered and parts of
            the roof torn off). A truck was flipped over on its
            side. A Walmart was damaged (front windows shattered and
            lots of overturned shopping carts).

&&

Corrected remarks

Event Number CHS2400897

ACD
Local storm report, Aug 6, 5:46 AM EDT, 48 minutes before
Preliminary Local Storm Report
National Weather Service Charleston SC
546 AM EDT Tue Aug 06 2024

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

0500 AM     Flood            1 N Walterboro          32.92N  80.67W
08/06/2024                   Colleton           SC   Emergency Mngr

            Colleton Emergency Manager reported that the
            intersection of Sweat Street and North Jefferies Blvd is
            flooded.

&&

Event Number CHS2400908

ACD
Local storm report, Aug 6, 5:52 AM EDT, 42 minutes before
Preliminary Local Storm Report
National Weather Service Charleston SC
552 AM EDT Tue Aug 06 2024

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

0515 AM     Flood            5 WNW Walterboro        32.93N  80.74W
08/06/2024                   Colleton           SC   Emergency Mngr

            Colleton County Emergency Manager reported that the
            intersection of Doctor's Creek Road and Penny Creek
            Drive is flooded.

0515 AM     Flood            Walterboro              32.90N  80.67W
08/06/2024                   Colleton           SC   Emergency Mngr

            Colleton County Emergency Manager reported that W
            Washington Street and Dowling Avenue is flooded.

&&

Event Number CHS2400909
Event Number CHS2400910

ACD
Local storm report, Aug 6, 6:23 AM EDT, 11 minutes before
Preliminary Local Storm Report
National Weather Service Charleston SC
623 AM EDT Tue Aug 06 2024

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

0520 AM     Flood            1 NNW Walterboro        32.92N  80.68W
08/06/2024                   Colleton           SC   Emergency Mngr

            Colleton EM reported that the intersection of Maxey
            Street and Robertson Blvd is flooded.

0520 AM     Flood            1 NNW Walterboro        32.92N  80.68W
08/06/2024                   Colleton           SC   Emergency Mngr

            Colleton EM reported that 225 Robertson Blvd is
            flooded.

0610 AM     Flood            1 ESE Walterboro        32.90N  80.65W
08/06/2024                   Colleton           SC   Emergency Mngr

            Colleton EM reported that the intersection of Still
            Street and Peurifoy Road is flooded.

0612 AM     Flood            3 NNE Hendersonville    32.84N  80.70W
08/06/2024                   Colleton           SC   Emergency Mngr

            Colleton EM reported that 3746 Hendersonville Highway
            is flooded.

0616 AM     Flood            2 N Walterboro          32.94N  80.66W
08/06/2024                   Colleton           SC   Emergency Mngr

            Colleton EM reported that the intersection of Calhoun
            Drive and Academy Road is flooded.

&&

Event Number CHS2400911
Event Number CHS2400912
Event Number CHS2400913
Event Number CHS2400914
Event Number CHS2400915

ACD

The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 5, 8:46 PM EDTFlash Flood Warning Considerable damage threatCHSBeaufort, Berkeley, Charleston, Colleton, Dorchester6 hr
Aug 5, 8:56 PM EDTTornado WarningCHSBeaufort19 min
Aug 5, 9:20 PM EDTTornado WarningCHSBeaufort25 min
Aug 5, 9:25 PM EDTTornado WarningCHSBeaufort, Charleston, Colleton50 min
Aug 5, 10:10 PM EDTTornado WarningCHSBeaufort35 min
Aug 5, 10:26 PM EDTRiver Flood WarningCHSAllendale4 days
Aug 5, 10:33 PM EDTTornado WarningCHSCharleston, Colleton42 min
Aug 5, 11:08 PM EDTAreal Flood AdvisoryCHSBerkeley, Charleston5 hr
Aug 6, 12:10 AM EDTTornado WarningCHSCharleston16 min
Aug 6, 12:22 AM EDTTornado WarningCHSBerkeley, Charleston, Dorchester38 min
Aug 6, 12:28 AM EDTTornado WarningCHSBeaufort, Colleton32 min
Aug 6, 12:45 AM EDTTornado WarningCHSBerkeley, Charleston30 min
Aug 6, 12:56 AM EDTFlash Flood WarningCHSBeaufort, Hampton, Jasper19 hr
Aug 6, 1:25 AM EDTFlash Flood WarningCHSJasper21 hr
Aug 6, 2:12 AM EDTFlash Flood WarningCHSAllendale, Beaufort, Colleton, Hampton, Jasper20 hr
Aug 6, 2:35 AM EDTTornado WarningCHSColleton25 min
Aug 6, 2:44 AM EDTFlash Flood WarningCHSBeaufort, Berkeley, Charleston, Colleton, Dorchester20 hr
Aug 6, 4:28 AM EDTAreal Flood AdvisoryCHSBerkeley, Charleston2 hr
Aug 6, 5:26 AM EDTSpecial Weather StatementCHSColleton49 min
Aug 6, 7:49 AM EDTFlash Flood WarningCHSAllendale12 hr
Aug 6, 11:37 AM EDTRiver Flood WarningCHSCharleston, Colleton, Dorchester16 days
Aug 6, 7:48 PM EDTAreal Flood WarningCHSBeaufort, Jasper14 hr

Nearby

Flash Flood Warnings in South Carolina, 2024Every flash flood warning in 2024

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.