Flash Flood Warning 1, NWS Charleston, SC

412 
WGUS72 KCHS 272156
FFSCHS

Flash Flood Statement
National Weather Service Charleston SC
556 PM EDT Wed May 27 2026

GAC051-103-SCC053-280315-
/O.CON.KCHS.FF.W.0001.000000T0000Z-260528T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chatham GA-Effingham GA-Jasper SC-
556 PM EDT Wed May 27 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT THIS
EVENING FOR CHATHAM, EFFINGHAM AND JASPER COUNTIES...

At 556 PM EDT, Chatham County Emergency Management reported ongoing
flash flooding in Pooler. Between 3 and 4 inches of rain have fallen.
Flash flooding is already occurring.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Emergency management reported.

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...
  Pooler, Savannah International Airport, Godley Station, I-16/I-95
  Interchange, Garden City, Port Wentworth, Hardeeville,
  Bloomingdale, Meinhard and Monteith.

At 541 PM EDT, Chatham County Emergency Management reported that the
intersection of Canal Street and Park Avenue in Pooler is closed due
to 12-18 inches of water. Also, USGS rain gages along Abercorn Creek
and the Savannah River in far southern Effingham County have measured
rainfall amounts in excess of 3 inches in the last 1 to 2 hours.
While the intensity of rainfall has diminished in the last 30
minutes, additional thunderstorms are developing and moving back into
the warned area.

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 3210 8139 3211 8140 3212 8139 3214 8135
      3227 8120 3228 8116 3228 8110 3226 8105
      3223 8103 3219 8105 3216 8109 3214 8115
      3210 8118 3207 8122 3204 8129 3202 8132
      3205 8137 3207 8137 3208 8139

FLASH FLOOD...OBSERVED

$$

BSH

580 
WGUS72 KCHS 272244
FFSCHS

Flash Flood Statement
National Weather Service Charleston SC
644 PM EDT Wed May 27 2026

GAC103-SCC053-272254-
/O.CAN.KCHS.FF.W.0001.000000T0000Z-260528T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Effingham GA-Jasper SC-
644 PM EDT Wed May 27 2026

...FLASH FLOOD WARNING IS CANCELLED FOR EFFINGHAM AND JASPER
COUNTIES...

Flooding is no longer expected to pose a threat.

&&

LAT...LON 3220 8112 3220 8111 3219 8112 3218 8112
      3217 8111 3217 8113 3215 8111 3214 8115
      3210 8118 3207 8122 3202 8132 3205 8137
      3207 8137 3208 8139 3210 8139 3224 8120
      3223 8114 3222 8115 3222 8114

$$

GAC051-280315-
/O.CON.KCHS.FF.W.0001.000000T0000Z-260528T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chatham GA-
644 PM EDT Wed May 27 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT THIS
EVENING FOR CHATHAM COUNTY...

At 644 PM EDT, Chatham County Emergency Management reported a few
flooded roads in the Pooler area. Between 3 and 4 inches of rain have
fallen. Flash flooding is ongoing.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Emergency management reported.

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...
  Pooler, Godley Station, Savannah International Airport, I-16/I-95
  Interchange, Garden City, Port Wentworth, Bloomingdale, Meinhard,
  Monteith and Williams.

Radar imagery indicates that rainfall continues to dwindle and
significant additional rainfall amounts are not expected. A few
flooded roads are still ongoing around the Pooler area.

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 3220 8112 3220 8111 3219 8112 3218 8112
      3217 8111 3217 8113 3215 8111 3214 8115
      3210 8118 3207 8122 3202 8132 3205 8137
      3207 8137 3208 8139 3210 8139 3224 8120
      3223 8114 3222 8115 3222 8114

FLASH FLOOD...OBSERVED

$$

BSH

630 
WGUS72 KCHS 280008
FFSCHS

Flash Flood Statement
National Weather Service Charleston SC
808 PM EDT Wed May 27 2026

GAC051-280018-
/O.CAN.KCHS.FF.W.0001.000000T0000Z-260528T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chatham GA-
808 PM EDT Wed May 27 2026

...FLASH FLOOD WARNING IS CANCELLED FOR CHATHAM COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.

&&

LAT...LON 3220 8112 3220 8111 3219 8112 3218 8112
      3217 8111 3217 8113 3215 8111 3214 8115
      3210 8118 3207 8122 3202 8132 3205 8137
      3207 8137 3208 8139 3210 8139 3224 8120
      3223 8114 3222 8115 3222 8114

$$

BSH

Area Forecast Discussion
National Weather Service Charleston SC
244 PM EDT Wed May 27 2026

.WHAT HAS CHANGED...
All sections have been updated.

&&

.KEY MESSAGES...
- 1) Hot and humid conditions with periods of showers and
  thunderstorms across SE GA/SC this evening and Thursday.
  Locally heavy downpours are possible.

- 2) An unsettled wet pattern is expected to develop Friday
  into the weekend, increasing the potential for heavy rainfall
  and localized flooding.

&&

.DISCUSSION...
KEY MESSAGE 1: Hot and humid conditions with periods of showers and
thunderstorms across SE GA/SC this evening and Thursday. Locally
heavy downpours are possible.

A warm and moist airmass will remain in place through Thursday as
deep moisture continues to advect northward along the western
periphery of Atlantic high pressure. With PWATs increasing to around
2 inches this afternoon, scattered to numerous showers and
thunderstorms will initiate along and west of the sea breeze
during the mid to late afternoon hours. The upper ridge in the
Atlantic will help to suppress convection, mainly along the
coast. However, a slightly weaker ridge Thursday could allow
for more robust development/coverage. Additionally, a weak cold
front will begin to drop southward toward the forecast area
Thursday providing additional source of lift.

While severe potential should remain limited today and Thursday,
deeper convection could produce heavy downpours dropping a
quick inch or two, and possibly isolated minor flooding. HREF
probabilities indicate a 20-40% chance for 1" or greater
rainfall from these storms through this evening, with chances
increasing to 40-70% for Thursday. A Flood Advisory could be
needed where heavier storms track over the same area; the greater
chances occurring Thursday. However, impacts are expected to
remain localized, with much of the rainfall beneficial given the
ongoing drought conditions.

Humidity may range a bit higher on Thursday as the upper ridge
weakens and the area of rain soaked ground increases. Given high
temperatures in upper 80s to around 90 and dewpoints in the low
to mid 70s, conditions will remain hot and humid. Coastal
counties could see heat index values between 100 to 103 degrees.

KEY MESSAGE 2: An unsettled wet pattern is expected to develop
Friday into the weekend, increasing the potential for heavy rainfall
and localized flooding.

As noted in days past, will see a sfc cold front stall near the
region Friday, resulting in a prolonged period of unsettled weather.
While showers and perhaps a few storms may be ongoing by Friday
morning, expect coverage to become more widespread during the
afternoon and evening hours. This pattern will continue into
Saturday and Sunday as the aforementioned front and sfc low lingers
along the coast.

Given the stationary nature of the front, combined with slow storm
motion (10-15 kt), do want to emphasize that any storm may be
capable of producing locally heavy rainfall - especially as PWATs
near 2 inches. In terms of accumulations, latest guidance still
maintains anywhere from 2 to 4 inches over a 72 hour period spanning
Friday through Sunday. However, there has been a subtle shift
southward in the axis of higher accumulations. Though this axis
could still shift more in the coming forecast cycles, do think it's
a trend worth keeping an eye on. In regard to severe weather, latest
soundings do show ample lift and moisture - however, with shear
remaining meager, think our chances for seeing severe storms will be
rather limited.

Otherwise, look for afternoon highs in the low to mid 80s to become
common, with overnight lows falling into the 60s.

&&

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
27/18z TAF Discussion: Ongoing showers and thunderstorms will
continue to develop along the sea breeze and inland of the
terminals through this evening. Convection will generally track
northeast likely impacting the terminals later this
afternoon/early evening. The TAFs are highlighted with TSRA
TEMPOs at KSAV and KCHS between 19-22Z. For now, the TAF for
KJZI does not include the TEMPO group as the sea breeze is
located further inland, and overall lower confidence of impacts
from convection. Guidance has struggled with low stratus and
some 2-3 kft ceilings could develop at times through this
evening. However, it should be brief, so this was not explicitly
mentioned. Southerly winds with gusts around 20 kt will be
common through the evening before waning overnight. Low stratus
and MVFR ceilings could return overnight after midnight, but
maintained VFR in this issuance.

Extended Aviation Outlook: Brief flight restrictions possible within
showers and thunderstorms at CHS/JZI/SAV terminals during the
afternoon hours into the later half of the week. More periodic
flight restrictions are possible Friday into the weekend as the
potential for widespread showers/thunderstorms increases. In
addition, patchy overnight fog and/or stratus cannot be ruled out
after recent rains.

&&

.MARINE...
Tonight: The marine zones will remain under the influence of broad
high pressure. South winds should remain between 10-15 kt with gusts
up to 20 kt. Wave heights will range between 3-5 ft.

Thursday through Sunday: Conditions are generally forecast to remain
below Small Craft Advisory criteria into the weekend, with daily
chances for showers and thunderstorms. A surface front pushes down
into the region overnight into Friday, with a surge in winds 15 to
20 knots behind the front Friday afternoon before the front stalls.
The surface front lingers across the region throughout the weekend,
and a surface low pressure or two may form along the front, possibly
pinching the pressure gradient a couple times throughout the
weekend. This would bring brief periods periods of Small Craft
Advisory level winds and seas, though confidence in timing and
location are currently low.

Rip Currents: An elevated rip current risk will remain through the
week with a modest easterly swell around 3 to 4 feet every 8 seconds
and sea breeze influences. A moderate risk of rip currents is in
place for all area beaches through Thursday.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.
MARINE...None.

&&

BRS/SST

Hazardous Weather Outlook
National Weather Service Charleston SC
226 PM EDT Wed May 27 2026

GAZ087-088-099>101-114-115-137-216>219-238>241-SCZ040-042>045-
147>152-281830-
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-
226 PM EDT Wed May 27 2026

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

.DAY ONE...This afternoon and tonight.

See the Graphical Hazardous Weather Outlook for more information
about the following possible hazardous weather:

- Rip Current

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

See the Graphical Hazardous Weather Outlook for more information
about the following possible hazardous weather:

- Rip Current

&&

The Graphical Hazardous Weather Outlook can be found at:
https://www.weather.gov/erh/ghwo/?wfo=chs

Preliminary Local Storm Report
National Weather Service Charleston SC
359 PM EDT Wed May 27 2026

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

0330 PM     Tstm Wnd Gst     4 NNW Moncks Corner     33.25N  80.04W
05/27/2026  M48 mph          Berkeley           SC   Official NWS Obs

            The NWS observation site at Pinopolis on the south end
            of Lake Moultrie measured a 48 mph wind gust.

&&

Event Number CHS2600372

BSH