Alert archive / South Carolina / Flash Flood Warnings in 2026
Flash Flood Warning 3, NWS Charleston, SC
NWS Charleston, SC issued this flash flood warning at Jun 1, 2026, 9:23 PM EDT for Berkeley County, Charleston County, Dorchester County, South Carolina. It was in force for 81 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 1, 2026, 9:23 PM EDT (01:23 UTC)
- Expired
- Jun 1, 2026, 10:44 PM EDT
- In force
- 81 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Flood severity
- None
Counties Berkeley County, SC, Charleston County, SC, Dorchester County, SC
The radar
The Charleston,SC radar (KCLX), 104 km from the middle of the area, began a volume at 01:23 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
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, 1.4 hours before the alert went out and 14 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
- 145 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 939 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.2
The text
As transmitted.
801
WGUS52 KCHS 020123
FFWCHS
SCC015-019-035-020415-
/O.NEW.KCHS.FF.W.0003.260602T0123Z-260602T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston SC
923 PM EDT Mon Jun 1 2026
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...
Dorchester County in southeastern South Carolina...
* Until 1215 AM EDT.
* At 923 PM EDT, Doppler radar indicated a large cluster of showers
and thunderstorms with torrential rainfall moving southeast into
the Charleston Metro Area. Much of this area received between 1 and
3 inches of earlier this evening. Another 1 to 3 inches of rain
could fall, which combined with high tide, will likely produce
areas of flash flooding, especially in parts of North Charleston
and Downtown Charleston. Road closures are likely and water may
enter buildings.
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...
North Charleston, Mount Pleasant, Goose Creek, Hanahan, Downtown
Charleston, I-26/I-526 Interchange, West Ashley, Daniel Island,
James Island and Fort Sumter.
This includes the following highways...
I-26 between mile markers 206 and 221. I-526 between mile markers 11
and 31.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
High tide will inhibit runoff of heavy rain, flooding areas of poor
drainage in Downtown Charleston. Areas most prone to flooding include
the Market, Crosstown, East Bay Street and Morrison Drive.
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 3295 8014 3301 8004 3276 7976 3275 7977
3273 7983 3273 7985 3269 7986 3267 7986
3266 7987 3265 7989 3273 8003 3277 8006
3287 8014
FLASH FLOOD...RADAR INDICATED
$$
ST1 follow-up statement
088
WGUS72 KCHS 020244
FFSCHS
Flash Flood Statement
National Weather Service Charleston SC
1044 PM EDT Mon Jun 1 2026
SCC015-019-035-020254-
/O.CAN.KCHS.FF.W.0003.000000T0000Z-260602T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berkeley SC-Charleston SC-Dorchester SC-
1044 PM EDT Mon Jun 1 2026
...FLASH FLOOD WARNING IS CANCELLED FOR BERKELEY, CHARLESTON AND
DORCHESTER COUNTIES...
Heavy rain has ended and the risk for flash flooding is diminishing.
A few road closures could still occur through midnight in Downtown
Charleston, but additional flooding is not expected.
&&
LAT...LON 3295 8014 3301 8004 3276 7976 3275 7977
3273 7983 3273 7985 3269 7986 3267 7986
3266 7987 3265 7989 3273 8003 3277 8006
3287 8014
$$
STWhat 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 Jun 1, 7:04 PM EDT, 2 hours 19 minutes earlier. Its key messages:
- 1) Locally heavy rainfall will remain a threat for portions of southeast Georgia and southeast South Carolina through Tuesday.
- 2) Minor coastal flooding is possible along the Charleston and Colleton County coastline with the Tuesday evening high tide.
Area forecast discussion, Jun 1, 7:04 PM EDT, 2 hours 19 minutes before
Area Forecast Discussion
National Weather Service Charleston SC
704 PM EDT Mon Jun 1 2026
.WHAT HAS CHANGED...
Key Message 1 and the Aviation section was updated.
&&
.KEY MESSAGES...
- 1) Locally heavy rainfall will remain a threat for portions of
southeast Georgia and southeast South Carolina through
Tuesday.
- 2) Minor coastal flooding is possible along the Charleston
and Colleton County coastline with the Tuesday evening high
tide.
&&
.DISCUSSION...
KEY MESSAGE 1: Locally heavy rainfall will remain a threat for
portions of southeast Georgia and southeast South Carolina
through Tuesday.
Rest of Tonight: Areas of convection continue to fire in the
vicinity of a weak sea breeze/outflow composite boundary that
pushed west through the Charleston Tri-County and into parts of
Colleton and Beaufort County. KCLX shows another round of
convection moving south/southeast across the eastern Midlands
and western Pee Dee. This activity will push into the Charleston
Tri-County and possibly Colleton County by mid-evening,
bringing additional rainfall to the area. Despite earlier
convection, there is still a fair amount of MLCAPE in place, so
this activity could hold together before slowly weakening as it
approaches the coast. Gusty winds, locally heavy rainfall and
isolated flooding remain the primary concerns.
Later tonight, there are signals that convection may re-fire
over the western Midlands along an outflow being generated by
convection moving east of Columbia. If it forms, it would drop
south/southeast into interior Southeast Georgia and possibly
parts of the Lowcountry. Confidence is only moderate at best if
this area will develop. Again, gusty winds, locally heavy
rainfall and isolated flooding would be the main issue.
Tuesday: A cold front will sink south of the area on Tuesday,
as high pressure builds in from the north. Aloft, a mid level
trough will extend into the Southeast with a shortwave rounding
the base later in the day. Guidance is still a bit mixed on
convective activity, but we should see at least scattered
showers and thunderstorms during the first part of the day
before drier air works in from the north and activity eventually
pushes south of the Altamaha River. There could be pockets of
heavier rainfall, but the flooding threat looks low and focused
more to the south.
KEY MESSAGE 2: Minor coastal flooding is possible along the
Charleston and Colleton County coastline with the Tuesday
evening high tide.
Gusty northeast winds will develop along the southeast SC coast
on Tuesday behind a passing cold front. This northeast flow
will produce a surge in tide levels, especially around the time
of the Tuesday evening high tide (occurring around 1015 PM). The
astronomical tide level is 5.5 ft MLLW, so it would require a
rather anomalous 1.5 ft departure to reach the minor coastal
flood threshold of 7 ft MLLW. For context, historical analysis
shows that a departure of 1.5 ft or higher has only occurred
with ~7% of all minor coastal flood events on record. Still,
minor coastal flooding is possible, and a Coastal Flood Advisory
could be needed for the Charleston and Colleton county coasts.
&&
.AVIATION /00Z TUESDAY THROUGH SATURDAY/...
02/00z TAF Discussion:
KCHS/KJZI: Risk for shower impacts will linger through for much
of the evening hours. A cluster of storms moving across the
eastern Midlands will make a run for both terminals by 01-03z.
TEMPO groups for MVFR conditions were introduced to account for
this. A few tstms have been observed at times, but as the
atmosphere slowly stabilizes ahead of the activity, the risk
for a mention of tstms is too low to justify a mention at this
time. Another round of convection could develop over the western
Midlands and move southeast. Much of this should remain to the
west, but a PROB30 group for MVFR vsbys in RA was included
05-08z. A cold front should push through the terminals before
daybreak with a period of IFR cigs possible, especially at KCHS.
IFR cigs should lift to MVFR by mid-morning and linger through
the day at both terminals as east to northeast winds become a
bit gusty.
KSAV: VFR this evening. There are signals that a cluster of
showers/tstms could develop across the western Midlands along
outflow from storms near Columbia. It is uncertain if this
activity will develop, but it could make a run for KSAV early
Tuesday morning if it does. Fro now a PROB30 group for MVFR
conditions in TSRA was included 06-09z to account for this.
Otherwise, a cold front will cross the terminal before daybreak
Tuesday. MVFR cigs are expected to filter in behind the front
and linger through the day as east to northeast winds become a
bit gusty.
Extended Aviation Outlook: Periodic flight restrictions are
possible through Tuesday due to scattered showers and isolated
thunderstorms. Patchy overnight fog and/or low stratus are also
possible.
&&
.MARINE...
Tonight through Saturday: No hazardous weather is expected
across the waters tonight. The time period of most concern is
Tuesday into Wednesday. High pressure will build south into the
region, leading to increasing northeast winds and seas. Solid
Small Craft Advisory conditions are expected across all waters.
There is even a period where gusts could approach gale force
late Tuesday night into Wednesday, particularly in the outer
waters beyond 20 nm, but this threat looks too marginal for any
Gale Watches at this point. While winds will begin to subside
Wednesday night into Thursday, 6 ft seas could maintain
Advisories for portions of the waters into at least part of the
day Thursday. No concerns for Friday and Saturday.
Rip Currents: Gusty northeast winds and increasing swell will
lead to an enhanced risk of rip currents through mid week. A
Moderate Risk is forecast at all area beaches for Tuesday. On
Wednesday, the forecast features a Moderate Risk across SC
beaches and a High Risk at GA beaches.
&&
.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.
MARINE...Small Craft Advisory from noon Tuesday to 5 AM EDT Thursday
for AMZ360.
Small Craft Advisory from 3 PM Tuesday to 5 AM EDT Thursday
for AMZ362.
Small Craft Advisory from 5 PM Tuesday to 11 AM EDT Thursday
for AMZ364.
Small Craft Advisory from 5 PM Tuesday to 8 PM EDT Thursday
for AMZ384.
&&Hazardous weather outlook, Jun 1, 5:40 PM EDT, 3 hours 43 minutes before
Hazardous Weather Outlook National Weather Service Charleston SC 540 PM EDT Mon Jun 1 2026 GAZ087-088-099>101-114-115-137-216>219-238>241-SCZ040-042>045- 147>152-022145- Jenkins-Screven-Candler-Bulloch-Effingham-Tattnall-Evans-Long- Inland Bryan-Coastal Bryan-Inland Chatham-Coastal Chatham- Inland Liberty-Coastal Liberty-Inland McIntosh-Coastal McIntosh- Allendale-Hampton-Inland Colleton-Dorchester-Inland Berkeley- Inland Jasper-Beaufort-Coastal Colleton-Charleston-Coastal Jasper- Tidal Berkeley- 540 PM EDT Mon Jun 1 2026 This Hazardous Weather Outlook is for southeast Georgia and southeast South Carolina. .DAY ONE...Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. See the Graphical Hazardous Weather Outlook for more information about the following possible hazardous weather: - Coastal Flood - Rip Current && The Graphical Hazardous Weather Outlook can be found at: https://www.weather.gov/erh/ghwo/?wfo=chs
In the hours before
Local storm report, Jun 1, 6:36 PM EDT, 2 hours 47 minutes before
Preliminary Local Storm Report
National Weather Service Charleston SC
636 PM EDT Mon Jun 01 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0556 PM Flash Flood 1 WSW Charleston 32.78N 79.95W
06/01/2026 Charleston SC Law Enforcement
Law enforcement reports the Lockwood Drive ramps onto
Calhoun St are closed due to flooding.
&&
Event Number CHS2600415
CPMLocal storm report, Jun 1, 6:37 PM EDT, 2 hours 46 minutes before
Preliminary Local Storm Report
National Weather Service Charleston SC
637 PM EDT Mon Jun 01 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0608 PM Flash Flood 1 ENE Charleston 32.79N 79.93W
06/01/2026 Charleston SC Law Enforcement
Law enforcement reports Washington St closed between
Laurens St and Society St due to flooding.
&&
Event Number CHS2600416
CPMLocal storm report, Jun 1, 6:38 PM EDT, 2 hours 45 minutes before
Preliminary Local Storm Report
National Weather Service Charleston SC
638 PM EDT Mon Jun 01 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0609 PM Flash Flood Charleston 32.78N 79.94W
06/01/2026 Charleston SC Law Enforcement
Law enforcement reports Ashley Ave closed between
Calhoun St and Bennett St due to flooding.
&&
Event Number CHS2600417
CPMLocal storm report, Jun 1, 6:40 PM EDT, 2 hours 43 minutes before
Preliminary Local Storm Report
National Weather Service Charleston SC
640 PM EDT Mon Jun 01 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0611 PM Flash Flood Charleston 32.78N 79.95W
06/01/2026 Charleston SC Law Enforcement
Law enforcement reports Halsey St closed between Ashley
Ave and Gadsden St due to flooding.
&&
Event Number CHS2600418
CPMLocal storm report, Jun 1, 8:17 PM EDT, 1 hour 6 minutes before
Preliminary Local Storm Report...Summary
National Weather Service Charleston SC
817 PM EDT Mon Jun 01 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0528 PM Flash Flood 1 NNW Charleston 32.80N 79.95W
06/01/2026 Charleston SC Law Enforcement
Law enforcement reports King St at Huger St closed due
to flooding.
0532 PM Flood 2 NNW Charleston 32.81N 79.95W
06/01/2026 Charleston SC Public
Video shared via social media of N Nassau St at
Isabella St flooded with water up to the undercarriage
of a sedan.
0532 PM Flash Flood Charleston 32.78N 79.94W
06/01/2026 Charleston SC Law Enforcement
Law enforcement reports Ogier St closed due to
flooding.
0532 PM Flash Flood 1 NNW Charleston 32.80N 79.95W
06/01/2026 Charleston SC Official NWS Obs
A City of Charleston inundation sensor at the
intersection of Huger Street and King Street measured a
peak inundation of 0.59 inch. The intersection has been
closed. Flash flooding typically begins at 0.40 inch at
this location.
0541 PM Flash Flood 1 WNW Charleston 32.79N 79.96W
06/01/2026 Charleston SC Emergency Mngr
Emergency manager reports Hagood Ave at Fishburne St
closed due to flooding.
0552 PM Rain 2 NNW Charleston 32.81N 79.96W
06/01/2026 M2.34 inch Charleston SC CoCoRaHS
CoCoRaHS observer reports measuring 2.34 inches of rain
within the last 60 minutes.
0553 PM Flash Flood Charleston 32.78N 79.94W
06/01/2026 Charleston SC Law Enforcement
Law enforcement reports Rutledge Ave is closed between
Calhoun St and Bennett St due to flooding.
0555 PM Flash Flood 1 NW Charleston 32.79N 79.95W
06/01/2026 Charleston SC Law Enforcement
Law enforcement reports Ashley Ave at Fishburne St
closed due to flooding.
0556 PM Flash Flood 1 WSW Charleston 32.78N 79.95W
06/01/2026 Charleston SC Law Enforcement
Law enforcement reports the Lockwood Drive ramps onto
Calhoun St are closed due to flooding.
0608 PM Flash Flood 1 ENE Charleston 32.79N 79.93W
06/01/2026 Charleston SC Law Enforcement
Law enforcement reports Washington St closed between
Laurens St and Society St due to flooding.
0609 PM Flash Flood Charleston 32.78N 79.94W
06/01/2026 Charleston SC Law Enforcement
Law enforcement reports Ashley Ave closed between
Calhoun St and Bennett St due to flooding.
0611 PM Flash Flood Charleston 32.78N 79.95W
06/01/2026 Charleston SC Law Enforcement
Law enforcement reports Halsey St closed between Ashley
Ave and Gadsden St due to flooding.
&&
EVENT NUMBER CHS2600408 CHS2600407 CHS2600409 CHS2600412 CHS2600410
CHS2600411 CHS2600413 CHS2600414 CHS2600415 CHS2600416 CHS2600417
CHS2600418Special weather statement, Jun 1, 9:03 PM EDT, 20 minutes before
Special Weather Statement
National Weather Service Charleston SC
903 PM EDT Mon Jun 1 2026
SCZ044-045-150-152-020130-
Inland Berkeley SC-Dorchester SC-Charleston SC-Tidal Berkeley SC-
903 PM EDT Mon Jun 1 2026
...A STRONG THUNDERSTORM WILL IMPACT BERKELEY AND DORCHESTER COUNTIES
UNTIL 930 PM EDT...
At 903 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Jedburg, moving southeast at 30 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
North Charleston, Summerville, Goose Creek, Ladson, Ridgeville,
Sangaree, Jedburg, College Park, Knightsville and Crowfield
Plantation.
This includes I-26 between mile markers 186 and 207.
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 3309 8044 3327 8021 3309 7986 3289 8018
TIME...MOT...LOC 0103Z 310DEG 25KT 3316 8023
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
CPMThe office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 9:03 PM EDT | Special Weather Statement | CHS | Dorchester | 27 min |
| Jun 1, 9:19 PM EDT | Special Marine Warning | CHS | 61 min | |
| Jun 2, 12:46 AM EDT | Special Weather Statement | CHS | Allendale, Hampton | 44 min |
| Jun 2, 3:11 AM EDT | Special Marine Warning | CHS | 64 min | |
| Jun 2, 2:17 PM EDT | Rip Current Statement | CHS | Beaufort, Charleston, Colleton, Jasper | 30 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.