Flash Flood Warning 3, NWS Columbia, SC

808 
WGUS72 KCAE 252006
FFSCAE

Flash Flood Statement
National Weather Service Columbia SC
406 PM EDT Mon May 25 2026

SCC011-252045-
/O.CON.KCAE.FF.W.0003.000000T0000Z-260525T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Barnwell SC-
406 PM EDT Mon May 25 2026

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM EDT THIS 
AFTERNOON FOR BARNWELL COUNTY...

At 406 PM EDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 1 and 3 inches of rain have 
fallen. Additional rainfall amounts up to 0.5 inches are possible in 
the warned area. Flash flooding is ongoing or expected to begin 
shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

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...
  Barnwell, Savannah River Site, Williston, Blackville, Barnwell 
  State Park, Hilda, Snelling, Elko, Barnwell County Airport and 
  Savannah River Site K Complex.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Most flooding deaths occur in vehicles. Never drive through a 
flooded roadway or around barricades. Turn around, don't drown.

Report any flooding directly to the Columbia National Weather 
Service at 803 234 4115 when it is safe to do so. You can also send 
reports by Facebook or Twitter to NWSColumbia or by e-mail at 
NWS.Columbia@noaa.gov.

&&

LAT...LON 3343 8124 3328 8123 3316 8150 3315 8151
      3316 8154 3310 8161 3309 8165 3312 8170
      3316 8176 3318 8177 3320 8176 3340 8150
      3345 8140

FLASH FLOOD...RADAR INDICATED

$$

GPL

606 
WGUS72 KCAE 252040
FFSCAE

Flash Flood Statement
National Weather Service Columbia SC
440 PM EDT Mon May 25 2026

SCC011-252050-
/O.EXP.KCAE.FF.W.0003.000000T0000Z-260525T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Barnwell SC-
440 PM EDT Mon May 25 2026

...FLASH FLOOD WARNING WILL EXPIRE AT 445 PM EDT THIS AFTERNOON FOR 
BARNWELL COUNTY...

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

&&

LAT...LON 3343 8124 3328 8123 3316 8150 3315 8151
      3316 8154 3310 8161 3309 8165 3312 8170
      3316 8176 3318 8177 3320 8176 3340 8150
      3345 8140

$$

GPL

Area Forecast Discussion
National Weather Service Columbia SC
250 PM EDT Mon May 25 2026

.WHAT HAS CHANGED...
Updated current conditions as storms continue across the
forecast area. Aviation discussion updated for 18Z TAF
issuance.

&&

.KEY MESSAGES...
- 1. Daily shower and thunderstorm chances continue into the
  upcoming week, with localized flash flooding possible through
  Tuesday.

&&

.DISCUSSION...
Key Message 1: Daily shower and thunderstorm chances continue
into the upcoming week, with localized flash flooding possible
through Tuesday.

Today/Tonight: Scattered showers and storms will continue
through this afternoon and is generally beginning to build
northwestward. The main hazard with these storms is potential
flash flooding with rates between 1-2 inches per hour over
areas that have already received significant rainfall over the
past several days.

The overall forecast hasn't changed too much. Southwest flow is
expected to persist at least through the first half of the week
with the synoptic pattern favoring ridging offshore and an
upper low over the lower Mississippi Valley. NAEFS mean
indicates PWATs remain around or above the 99th percentile
through Tuesday, generally around 2". Heavy rain and isolated
flash flooding will be possible with afternoon convection today
and Tuesday. However, a strong trough digging south from the
Pacific Northwest strengthens the ridging over our area which
would limit forcing, particularly on Tuesday, limiting the flash
flood threat for that day compared to previous forecasts. With
moisture so high and moderate destabilization each afternoon,
scattered storms are anticipated to develop. Storm coverage
Wednesday through the end of the week may be a bit more limited
as southwest flow weakens but isolated diurnal showers and
storms remain possible. A front will approach the area next
weekend with EC EFI signaling below average temperatures for the
weekend with precipitation chances increasing.

&&

.AVIATION /18Z MONDAY THROUGH SATURDAY/...
Scattered afternoon showers and storms impacting terminals with
restrictions developing tonight.

Thunderstorms producing heavy rain will continue to impact the
terminals through the afternoon hours. Already have observed
rapid lowering visibilities to IFR at times within storms. While
storm coverage will diminish tonight, lingering showers are
possible around the terminals. Low level moisture will support
lowering ceilings tonight with highest confidence in MVFR but
possible IFR conditions tonight as well. Scattered showers and
storms likely once again tomorrow, although the most likely
timing will be after 18z.

EXTENDED AVIATION OUTLOOK...Abundant low level moisture will
bring more rounds of morning restrictions from fog and/or low
clouds. Scattered afternoon showers and thunderstorms are
possible each day.

&&

.CAE WATCHES/WARNINGS/ADVISORIES...
SC...None.
GA...None.

&&

DISCUSSION...96
AVIATION...96