Bands of heavy rainfall associated with Hurricane Isaias are
expected to develop across eastern Georgia into the Lowcountry of
South Carolina beginning late tonight and throughout the day on
Saturday. Heavy rainfall combined with astronomical high tides could
result in flash flooding and localized significant flooding
especially across coastal South Carolina.
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...Portions of southeast Georgia, including the following
areas, Bulloch, Candler, Coastal Bryan, Coastal Chatham, Coastal
Liberty, Coastal McIntosh, Effingham, Evans, Inland Bryan, Inland
Chatham, Inland Liberty, Inland McIntosh, Jenkins, Long, Screven
and Tattnall and southeast South Carolina, including the following
areas, Allendale, Beaufort, Charleston, Coastal Colleton, Coastal
Jasper, Dorchester, Hampton, Inland Berkeley, Inland Colleton,
Inland Jasper and Tidal Berkeley.
* WHEN...From 8 PM EDT this evening through late Saturday night.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas.
* ADDITIONAL DETAILS...
- Bands of heavy rainfall will move into eastern Georgia tonight
then spread northward into the Lowcountry of South Carolina
throughout the day on Saturday. Widespread rainfall totals of 2
to 4 inches with locally up to 6 inches across eastern Georgia
are possible and 3 to 6 inches locally up to 8+ inches across
South Carolina. Rainfall rates of 2 inches per hour will be
possible in the heaviest bands.
- http://www.weather.gov/safety/flood
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
Be prepared to protect life and property, especially in areas prone
to flooding. If flooding develops, move to higher ground immediately.
If driving, be prepared for flooded roadways and possible road
closures.
Inland Berkeley
5:00 AM on October 10, 2026
2:00 PM on October 10, 2026
* WHAT...East winds 10 to 20 knots with gusts up to 30 knots and
waves 1 to 2 feet expected on Lake Moultrie.
* WHERE...Lake Moultrie.
* WHEN...From 5 AM to 2 PM EDT Saturday.
* IMPACTS...Strong winds and rough waves on Lake Moultrie will create
hazardous conditions for small craft.
Boaters on Lake Moultrie should use extra caution since strong winds
and rough waves can overturn small craft.
Coastal Colleton; Charleston
6:00 AM on October 10, 2026
11:00 AM on October 10, 2026
* WHAT...For the High Rip Current Risk, dangerous rip currents.
For the Coastal Flood Advisory, up to one half foot of
inundation above ground level expected along shorelines and
tidal waterways (7.0 to 7.2 feet Mean Lower Low Water at
Charleston). For the Coastal Flood Watch, up to one foot of
inundation above ground level possible along shorelines and
tidal waterways (7.8 to 8.0 feet Mean Lower Low Water at
Charleston).
* WHERE...Coastal Colleton and Charleston Counties.
* WHEN...For the High Rip Current Risk, through Saturday
evening. For the Coastal Flood Advisory, from 6 PM to 9 PM EDT
this evening. For the Coastal Flood Watch, Saturday morning.
* IMPACTS...This will result in some roads becoming impassable
and minor flooding of properties. Rip currents can sweep even
the best swimmers away from shore into deeper water.
* ADDITIONAL DETAILS...High tide will occur around 7:51 PM this
evening and 8:23 AM Saturday at Charleston. Saltwater
inundation will be possible 1 to 2 hours before and after high
tide.
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Visit water.weather.gov for additional water level and flood
impact information.
Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.
Coastal Colleton; Charleston
6:00 PM on October 9, 2026
9:00 PM on October 9, 2026
* WHAT...For the High Rip Current Risk, dangerous rip currents.
For the Coastal Flood Advisory, up to one half foot of
inundation above ground level expected along shorelines and
tidal waterways (7.0 to 7.2 feet Mean Lower Low Water at
Charleston). For the Coastal Flood Watch, up to one foot of
inundation above ground level possible along shorelines and
tidal waterways (7.8 to 8.0 feet Mean Lower Low Water at
Charleston).
* WHERE...Coastal Colleton and Charleston Counties.
* WHEN...For the High Rip Current Risk, through Saturday
evening. For the Coastal Flood Advisory, from 6 PM to 9 PM EDT
this evening. For the Coastal Flood Watch, Saturday morning.
* IMPACTS...This will result in some roads becoming impassable
and minor flooding of properties. Rip currents can sweep even
the best swimmers away from shore into deeper water.
* ADDITIONAL DETAILS...High tide will occur around 7:51 PM this
evening and 8:23 AM Saturday at Charleston. Saltwater
inundation will be possible 1 to 2 hours before and after high
tide.
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Visit water.weather.gov for additional water level and flood
impact information.
Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.
Coastal Colleton; Charleston
8:00 PM on October 10, 2026
* WHAT...For the High Rip Current Risk, dangerous rip currents.
For the Coastal Flood Advisory, up to one half foot of
inundation above ground level expected along shorelines and
tidal waterways (7.0 to 7.2 feet Mean Lower Low Water at
Charleston). For the Coastal Flood Watch, up to one foot of
inundation above ground level possible along shorelines and
tidal waterways (7.8 to 8.0 feet Mean Lower Low Water at
Charleston).
* WHERE...Coastal Colleton and Charleston Counties.
* WHEN...For the High Rip Current Risk, through Saturday
evening. For the Coastal Flood Advisory, from 6 PM to 9 PM EDT
this evening. For the Coastal Flood Watch, Saturday morning.
* IMPACTS...This will result in some roads becoming impassable
and minor flooding of properties. Rip currents can sweep even
the best swimmers away from shore into deeper water.
* ADDITIONAL DETAILS...High tide will occur around 7:51 PM this
evening and 8:23 AM Saturday at Charleston. Saltwater
inundation will be possible 1 to 2 hours before and after high
tide.
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.
Visit water.weather.gov for additional water level and flood
impact information.
Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.
Charleston Area NWS Forecast
Forecast for Charleston updated at 2:32 PM on October 9, 2026
This AfternoonCloudy. Highs in the upper 70s. Northeast winds 10 to 15 mph with gusts up to 25 mph.
TonightShowers likely with a slight chance of thunderstorms in the evening, then showers with a chance of thunderstorms after midnight. Lows in the lower 70s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 90 percent.
SaturdayShowers with a chance of thunderstorms. Highs in the upper 70s. East winds 15 to 20 mph with gusts up to 35 mph. Chance of rain near 100 percent.
Saturday NightA chance of thunderstorms. Showers. Lows in the mid 70s. East winds 10 to 15 mph, becoming south 5 to 10 mph after midnight. Gusts up to 30 mph. Chance of rain near 100 percent.
SundayShowers likely. A chance of thunderstorms, mainly in the morning. Highs in the lower 80s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 70 percent.