Alert archive / South Carolina / Flash Flood Warnings in 2026
Flash Flood Warning 16, NWS Charleston, SC
NWS Charleston, SC issued this flash flood warning at Aug 27, 2026, 6:22 PM EDT for Beaufort County, Colleton County, Hampton County, South Carolina. It was in force for 2 hr. 5 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 27, 2026, 6:22 PM EDT (22:22 UTC)
- Expired
- Aug 27, 2026, 8:45 PM EDT
- In force
- 2 hr
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Beaufort County, SC, Colleton County, SC, Hampton County, SC
The radar
The Charleston,SC radar (KCLX), 20 km from the middle of the area, began a volume at 22:26 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 27, 7:10 PM EDT | FLASH FLOOD | 1 Nnw Yemassee, SC | Willow St N and Salkenhatchie Road has a section of water that is completely under water with erosion. |
| Aug 27, 7:10 PM EDT | FLASH FLOOD | 1 N Yemassee, SC | Between Pine St and Ponderosa Dr, Salkehatchie Road has a section that was underwater and one side has eroded. |
| Aug 27, 8:00 PM EDT | RAIN 10 | 1 N Yemassee, SC | COOP Observer reported 24 hour rainfall amount of 10 inches. Based on radar, most of the rainfall occurred between 3pm and 9:30pm. |
| Aug 27, 8:30 PM EDT | FLASH FLOOD | Yemassee, SC | Broadcast media reported approximately 3 to 4 inches of standing water covering the roadway near the Yemassee Amtrak station, with locally deeper water near the railroad crossing. |
| Aug 27, 8:30 PM EDT | FLASH FLOOD | Yemassee, SC | Broadcast Media reported approximately 3 to 6 inches of standing water observed along Hunt Street, with water covering the roadway and extending into adjacent grassy areas around a small barn. Depth estimated from a nearby flood-depth marker. |
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 4 storm reports to this flash flood warning; the first came 48 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 12:00Z, 10.4 hours before the alert went out and 81 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.
- Mixed-layer CAPE
- 1383 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 692 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
438
WGUS52 KCHS 272222
FFWCHS
SCC013-029-049-272345-
/O.NEW.KCHS.FF.W.0016.260827T2222Z-260827T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston SC
622 PM EDT Thu Aug 27 2026
The National Weather Service in Charleston has issued a
* Flash Flood Warning for...
Beaufort County in southeastern South Carolina...
Colleton County in southeastern South Carolina...
Hampton County in southeastern South Carolina...
* Until 745 PM EDT.
* At 622 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. Additional rainfall amounts of 1 to 3 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
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...
Yemassee, White Hall, McPhersonville, Blake, Salkehatchie,
Blountville and Davidson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3269 8095 3272 8092 3278 8076 3278 8064
3270 8060 3267 8078 3266 8085 3266 8087
3265 8090 3266 8095
FLASH FLOOD...RADAR INDICATED
$$
DPB2 follow-up statements
308
WGUS52 KCHS 272322
FFWCHS
SCC013-029-049-280045-
/O.EXT.KCHS.FF.W.0016.000000T0000Z-260828T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston SC
722 PM EDT Thu Aug 27 2026
The National Weather Service in Charleston has extended the
* Flash Flood Warning for...
Beaufort County in southeastern South Carolina...
Colleton County in southeastern South Carolina...
Hampton County in southeastern South Carolina...
* Until 845 PM EDT.
* At 722 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Yemassee, White Hall, McPhersonville, Blake, Salkehatchie,
Blountville and Davidson.
This includes I-95 in South Carolina between mile markers 36 and 43.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Report flooding directly to the Charleston National Weather Service
at 1-888-383-2024 or email your reports to nws.charlestonsc@noaa.gov.
&&
LAT...LON 3269 8095 3272 8092 3278 8076 3278 8064
3270 8060 3267 8078 3266 8085 3266 8087
3265 8090 3266 8095
FLASH FLOOD...RADAR INDICATED
$$588
WGUS72 KCHS 280039
FFSCHS
Flash Flood Statement
National Weather Service Charleston SC
839 PM EDT Thu Aug 27 2026
SCC013-029-049-280049-
/O.EXP.KCHS.FF.W.0016.000000T0000Z-260828T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Beaufort SC-Colleton SC-Hampton SC-
839 PM EDT Thu Aug 27 2026
...FLASH FLOOD WARNING WILL EXPIRE AT 845 PM EDT THIS EVENING FOR
BEAUFORT, COLLETON AND HAMPTON COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
&&
LAT...LON 3269 8095 3272 8092 3278 8076 3278 8064
3270 8060 3267 8078 3266 8085 3266 8087
3265 8090 3266 8095
$$
DPBWhat 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 27, 2:47 PM EDT, 3 hours 35 minutes earlier. Its key messages:
- 1) Unsettled weather will continue, with increasing chances of showers and thunderstorms this weekend.
Area forecast discussion, Aug 27, 2:47 PM EDT, 3 hours 35 minutes before
Area Forecast Discussion National Weather Service Charleston SC 247 PM EDT Thu Aug 27 2026 .WHAT HAS CHANGED... All sections have been updated. && .KEY MESSAGES... - 1) Unsettled weather will continue, with increasing chances of showers and thunderstorms this weekend. && .DISCUSSION... KEY MESSAGE 1: Unsettled weather will continue, with increasing chances of showers and thunderstorms this weekend. Rest of Today: Mid-level troughing dominates the synoptic pattern aloft, while a stationary front remains positioned over the SC Midlands. With these two features influencing the region scattered to numerous thunderstorms are forecast this afternoon. The PWAT from this morning's 12Z KCHS RAOB Sounding was 2.2", over the 90th percentile for today according to SPC climatology. Mesoanalysis from the SPC shows minimal DCAPE values, only around 500-600 J/kg. Given the very high PWATs and limited CAPE values this afternoon's main hazard will be heavy rainfall, especially over any area that sees training storms. The 12Z HREF paints the highest probabilities for >2" in 6 hours across the Charleston Tri-County and then along I-95 into southeastern Georgia. This afternoon's activity will wane with nightfall, with guidance showing shower/storm activity increasing again just offshore associated with the land breeze early Friday morning. Friday through Monday: The mid-levels will consist of a trough over the eastern third of the U.S. on Friday. It'll quickly weaken and lift north on Saturday, with gradually building heights overhead Sunday into Monday. At the surface, a stationary front should be located well to our west and northwest on Friday, with surface troughing also near our area. This general pattern will remain in place on Saturday, followed by a cold front potentially moving through on Sunday. There will be a deep plume of moisture ahead of the front, and across the Southeast U.S. PWATs will be around 2", but there could be brief periods where it peaks around 2.3". These values are well above normal for this time of year. The combination of regional lift, aided by the nearby front, and the sea breeze will generate an active weather pattern. Models are in fairly good agreement showing numerous to widespread showers and embedded thunderstorms Friday and Saturday afternoons, with perhaps slightly less coverage Sunday afternoon and again Monday afternoon. High temperatures will be near normal, but that'll still provide decent instability for late August. Therefore, we can't rule out strong to marginally severe storms each afternoon. The main concern will be the potential for locally heavy rainfall Friday and Saturday. Friday appears to be the day with more flooding potential given the overall synoptic and mesoscale setup. Regardless, there could certainly be slow moving, training, or back building storms both days that could drop significant amounts of rainfall locally. These details will need to be refined with future forecasts, especially when it comes to flash flooding. Also, WPC has our area highlighted in the ERO both days. && .AVIATION /18Z THURSDAY THROUGH TUESDAY/... Thunderstorms will likely impact KCHS/KSAV this afternoon, remaining just inland of KJZI. A TEMPO group has been introduced at KCHS/KSAV to address this threat. Thereafter, prevailing VFR. Extended Aviation Outlook: Showers and thunderstorms will bring brief flight restrictions through the weekend, especially during the afternoons. && .MARINE... Through Tonight: The pressure pattern will generally support southwest winds between 10 to 15 kts across the marine zones. Wave heights are forecast to remain between 2 to 3 ft. Showers and storms could form along the land breeze early Friday morning, with the potential for waterspouts. Extended Marine: A stationary front should be located well inland on Friday, with surface troughing also near our area. This general pattern will remain in place on Saturday, followed by a cold front potentially moving through on Sunday. No Small Craft Advisories are expected, with sustained winds generally 10 kt or less and seas 2-3 ft. However, some thunderstorms may bring brief periods of higher winds along with frequent lightning. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. &&
In the hours before
Special weather statement, Aug 27, 4:24 PM EDT, 1 hour 58 minutes before
Special Weather Statement
National Weather Service Charleston SC
424 PM EDT Thu Aug 27 2026
SCZ040-272100-
Allendale SC-
424 PM EDT Thu Aug 27 2026
...A STRONG THUNDERSTORM WILL IMPACT ALLENDALE COUNTY UNTIL 5 PM
EDT...
At 424 PM EDT, Doppler radar was tracking a strong thunderstorm over
Martin, moving east at 10 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Appleton, Martin, Seigling, Baldock and Averill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay tuned to NOAA Weather Radio All Hazards, TV or your local news
source for the latest information from the National Weather Service.
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 3303 8152 3315 8152 3314 8145 3311 8136
3311 8129 3303 8128 3302 8151 3302 8152
3303 8151
TIME...MOT...LOC 2024Z 265DEG 10KT 3308 8145
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 TO 55 MPH
ACDSpecial weather statement, Aug 27, 4:29 PM EDT, 1 hour 53 minutes before
Special Weather Statement
National Weather Service Charleston SC
429 PM EDT Thu Aug 27 2026
SCZ044-045-272100-
Inland Berkeley SC-Dorchester SC-
429 PM EDT Thu Aug 27 2026
...A LINE OF STRONG THUNDERSTORMS WILL IMPACT BERKELEY AND DORCHESTER
COUNTIES UNTIL 5 PM EDT...
At 429 PM EDT, Doppler radar was tracking a line of strong
thunderstorms extending from 18 miles north of Saint Stephen to over
Reevesville, moving east at 15 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Saint George, Dorchester, Saint Stephen, Harleyville, Bonneau,
Reevesville, Cross, Eastern Lake Marion, Eadytown and Southern Lake
Moultrie.
This includes the following highways...
I-26 between mile markers 171 and 190. I-95 in South Carolina between
mile markers 75 and 85.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay tuned to NOAA Weather Radio All Hazards, TV or your local news
source for the latest information from the National Weather Service.
Torrential rainfall is also occurring with these storms. Do not drive
your vehicle through flooded roadways.
Boaters on Lake Moultrie and the eastern portions of Lake Marion
should seek safe harbor immediately. If caught on the open water,
stay as low as possible and wear a personal flotation device.
Remember, if you can hear thunder you are at risk for being struck by
lightning.
&&
LAT...LON 3326 8036 3328 8035 3327 8030 3330 8025
3338 8024 3339 8022 3345 8022 3345 8014
3346 8014 3346 8013 3349 8015 3350 8013
3350 7996 3338 7982 3320 8007 3308 8043
3320 8075 3333 8050 3328 8048 3326 8044
TIME...MOT...LOC 2028Z 283DEG 15KT 3367 7996 3345 8017 3332 8035 3327
8046 3324 8062
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 TO 55 MPHSpecial weather statement, Aug 27, 4:39 PM EDT, 1 hour 43 minutes before
Special Weather Statement
National Weather Service Charleston SC
439 PM EDT Thu Aug 27 2026
GAZ087-088-099-100-272115-
Screven GA-Bulloch GA-Candler GA-Jenkins GA-
439 PM EDT Thu Aug 27 2026
...A STRONG THUNDERSTORM WILL IMPACT CANDLER...BULLOCH...SCREVEN AND
JENKINS COUNTIES UNTIL 515 PM EDT...
At 439 PM EDT, Doppler radar was tracking a strong thunderstorm 9
miles southwest of Butts, moving east at 25 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Statesboro, Metter, Butts, Portal, Pulaski, Register, Rocky Ford,
Hopeulikit, Scarboro and Emmalane.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay tuned to NOAA Weather Radio All Hazards, TV or your local news
source for the latest information from the National Weather Service.
Torrential rainfall is also occurring with this storm. Do not drive
your vehicle through flooded roadways.
&&
LAT...LON 3282 8215 3275 8168 3235 8182 3241 8221
3243 8219 3247 8218 3252 8215 3256 8208
3254 8203 3256 8203 3261 8200 3261 8201
3266 8208
TIME...MOT...LOC 2038Z 282DEG 20KT 3261 8211
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 TO 55 MPHSpecial weather statement, Aug 27, 4:44 PM EDT, 1 hour 38 minutes before
Special Weather Statement
National Weather Service Charleston SC
444 PM EDT Thu Aug 27 2026
SCZ043-149-150-272115-
Inland Colleton SC-Charleston SC-Coastal Colleton SC-
444 PM EDT Thu Aug 27 2026
...A STRONG THUNDERSTORM WILL IMPACT CHARLESTON AND COLLETON COUNTIES
UNTIL 515 PM EDT...
At 444 PM EDT, Doppler radar was tracking a strong thunderstorm near
Ashepoo, moving south at 15 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Jacksonboro, Ashepoo, Green Pond, Ritter, Neyles, Beck Landing,
Canady Landing, Gloverville, Parkers Ferry and Drawdy.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay tuned to NOAA Weather Radio All Hazards, TV or your local news
source for the latest information from the National Weather Service.
Torrential rainfall is also occurring with this storm. Do not drive
your vehicle through flooded roadways.
&&
LAT...LON 3285 8065 3291 8051 3278 8030 3265 8060
TIME...MOT...LOC 2044Z 344DEG 13KT 3281 8054
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 TO 55 MPH
ACDSpecial weather statement, Aug 27, 5:13 PM EDT, 1 hour 9 minutes before
Special Weather Statement
National Weather Service Charleston SC
513 PM EDT Thu Aug 27 2026
SCZ042-043-147>149-272200-
Inland Jasper SC-Beaufort SC-Inland Colleton SC-Coastal Colleton
SC-Hampton SC-
513 PM EDT Thu Aug 27 2026
...A STRONG THUNDERSTORM WILL IMPACT BEAUFORT...JASPER...COLLETON AND
HAMPTON COUNTIES UNTIL 6 PM EDT...
At 513 PM EDT, Doppler radar was tracking a strong thunderstorm over
Pocotaligo, moving east at 10 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Yemassee, Gardens Corner, Sheldon, Pocotaligo, White Hall,
Hendersonville, McPhersonville, Ritter, Blake and Salkehatchie.
This includes I-95 in South Carolina between mile markers 31 and 47.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay tuned to NOAA Weather Radio All Hazards, TV or your local news
source for the latest information from the National Weather Service.
&&
LAT...LON 3266 8097 3280 8077 3280 8063 3259 8060
3252 8086
TIME...MOT...LOC 2113Z 270DEG 10KT 3265 8081
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 TO 55 MPH
DPBSpecial weather statement, Aug 27, 5:32 PM EDT, 50 minutes before
Special Weather Statement
National Weather Service Charleston SC
532 PM EDT Thu Aug 27 2026
SCZ040-042-043-272215-
Hampton SC-Inland Colleton SC-Allendale SC-
532 PM EDT Thu Aug 27 2026
...A STRONG THUNDERSTORM WILL IMPACT COLLETON...ALLENDALE AND HAMPTON
COUNTIES UNTIL 615 PM EDT...
At 532 PM EDT, Doppler radar was tracking a strong thunderstorm over
Brunson, moving east at 10 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Allendale, Hampton, Lake Warren State Park, Varnville, Fairfax,
Brunson, Gifford, Sycamore, Luray and Crocketville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Stay tuned to NOAA Weather Radio All Hazards, TV or your local news
source for the latest information from the National Weather Service.
Torrential rainfall is also occurring with this storm. Do not drive
your vehicle through flooded roadways.
&&
LAT...LON 3276 8137 3296 8137 3308 8115 3305 8112
3305 8110 3303 8108 3306 8102 3285 8094
TIME...MOT...LOC 2131Z 263DEG 8KT 3291 8116
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 TO 55 MPH
DPBThe office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 2:23 AM EDT | Special Marine Warning | CHS | 56 min | |
| Aug 27, 6:28 AM EDT | Special Marine Warning | CHS | 92 min | |
| Aug 27, 3:08 PM EDT | Areal Flood Advisory | CHS | Berkeley, Charleston | 52 min |
| Aug 27, 4:24 PM EDT | Special Weather Statement | CHS | Allendale | 36 min |
| Aug 27, 4:29 PM EDT | Special Weather Statement | CHS | Dorchester | 31 min |
| Aug 27, 4:44 PM EDT | Special Weather Statement | CHS | Colleton | 31 min |
| Aug 27, 5:06 PM EDT | Severe Thunderstorm Warning | CHS | Charleston, Colleton | 54 min |
| Aug 27, 5:13 PM EDT | Special Weather Statement | CHS | Colleton | 47 min |
| Aug 27, 5:32 PM EDT | Special Weather Statement | CHS | Hampton | 43 min |
| Aug 27, 5:52 PM EDT | Areal Flood Advisory | CHS | Colleton | 53 min |
| Aug 27, 5:59 PM EDT | Areal Flood Advisory | CHS | Colleton, Hampton | 61 min |
| Aug 27, 6:33 PM EDT | Severe Thunderstorm Warning | CHS | Jasper | 42 min |
| Aug 27, 6:43 PM EDT | Special Weather Statement | CHS | Hampton | 47 min |
| Aug 27, 6:57 PM EDT | Special Weather Statement | CHS | Jasper | 33 min |
| Aug 27, 7:09 PM EDT | Areal Flood Advisory | CHS | Beaufort, Hampton, Jasper | 111 min |
| Aug 27, 7:44 PM EDT | Special Weather Statement | CHS | Beaufort, Jasper | 46 min |
Nearby
Flash Flood Warnings in South Carolina, 2026Every flash flood warning in 2026
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.