Alert archive / South Carolina / Special Weather Statements in 2026

Special Weather Statement, NWS Charleston, SC

August 22, 2026Berkeley County, South Carolina

NWS Charleston, SC issued this special weather statement at Aug 22, 2026, 4:00 PM EDT for Berkeley County, South Carolina. It was in force for 45 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: Aug 22, 2026, 4:00 PM EDT (20:00 UTC)
Expired: Aug 22, 2026, 4:45 PM EDT
In force: 45 min
Issued by: NWS Charleston, SC

County Berkeley County, SC

The radar

The Columbia radar (KCAE), 113 km from the middle of the area, began a volume at 20:03 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.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.0 hours before the alert went out and 54 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 926 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 728 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: 0 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 22, 2:27 PM EDT, 1 hour 33 minutes earlier. Its key messages:

1) Locally heavy rainfall is possible today with showers and storms.

Area forecast discussion, Aug 22, 2:27 PM EDT, 1 hour 33 minutes before

Area Forecast Discussion
National Weather Service Charleston SC
227 PM EDT Sat Aug 22 2026

.WHAT HAS CHANGED...
All sections updated.

&&

.KEY MESSAGES...
- 1) Locally heavy rainfall is possible today with showers and
  storms.

&&

.DISCUSSION...
KEY MESSAGE 1: Locally heavy rainfall is possible today with showers
and storms.

A large mid level trough, centered over the Great Lakes, will
dominate over the eastern CONUS today.. WPC surface analysis
from 15Z shows a weak front draped across the SC Midlands. This
front will be the main forcing behind showers and storms this
afternoon as it slowly moves towards the SC Lowcountry and SE
Georgia. While a strong storm cannot be ruled out, the main
hazard this afternoon will be heavy rainfall as PWATs are
analyzed around 1.9 to 2.0". The 12Z guidance depicts the bulk
of the precipitation developing around 22/23Z this evening,
generally along and east of I-95. The 12Z HREF shows
probabilities of 1 inch or greater east of I-95 around 50-70%.
Shower and storm activity is forecast to wind down by 9 PM.

Sunday Onward: The aforementioned upper trough will finally move
far enough east to usher in some drier air into the area by
Sunday into Monday. With drier air in place and the surface
boundary pushed offshore, rain chances should remain low through
Monday. However, moisture should begin to recover starting
Tuesday and into the middle of the week with a return to more
typical summertime pattern setting up.

&&

.AVIATION /18Z SATURDAY THROUGH THURSDAY/...
A TEMPO group has been introduced at KCHS/KJZI/KSAV to reflect
the threat for TSRA this afternoon. Thereafter, prevailing VFR
through the remainder of the 18Z TAFs.

Extended Aviation Outlook: Prevailing VFR.

&&

.MARINE...
Today through Thursday: Marine conditions are expected to remain
below Small Craft Advisory criteria through the period. A fairly
typical summertime pattern on tap. Generally expect south to
southwest winds averaging in the 10-15 knot range with gusts to 20
kt at times and seas 2 to 3 feet. Any showers or thunderstorms that
move over the waters have the potential to bring higher wind gusts
and frequent lightning.

&&

.CLIMATE...
Record High Minimum Temperatures:

August 24:
KCHS: 76/2010
KCXM: 80/1975

August 25:
KCHS: 77/1982

August 27:
KCHS: 78/2011

August 28:
KCHS: 77/2020

&&

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

&&

In the hours before

Special weather statement, Aug 22, 4:00 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Charleston SC
400 PM EDT Sat Aug 22 2026

SCZ045-222045-
Inland Berkeley SC-
400 PM EDT Sat Aug 22 2026

...MARINERS ON LAKE MOULTRIE AND EASTERN LAKE MARION SHOULD CONSIDER
SEEKING SAFE HARBOR...

Showers and thunderstorms will impact portions of Lake Moultrie and
eastern Lake Marion through late afternoon. Gusty winds, locally
heavy rainfall reducing visibility to 1 NM or less and cloud-to-water
lightning can be expected. Mariners are urged to seek safe harbor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3346 8016 3340 8015 3337 8009 3339 8008
      3339 7999 3334 7997 3331 7999 3330 7997
      3324 7999 3320 8006 3329 8015 3335 8009
      3340 8016 3338 8018 3339 8022 3345 8022
      3344 8020 3345 8021 3345 8020

ST

The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 21, 9:42 PM EDT	Special Marine Warning	CHS		85 min
Aug 22, 5:02 AM EDT	Special Marine Warning	CHS		36 min
Aug 22, 4:29 PM EDT	Special Weather Statement	CHS	Dorchester	31 min
Aug 22, 4:34 PM EDT	Special Weather Statement	CHS	Berkeley	26 min
Aug 22, 5:06 PM EDT	Areal Flood Advisory	CHS	Berkeley, Colleton, Dorchester	114 min
Aug 22, 5:17 PM EDT	Areal Flood Advisory	CHS	Berkeley, Charleston, Dorchester	13 min
Aug 22, 5:24 PM EDT	Flash Flood Warning	CHS	Berkeley, Charleston, Dorchester	5 hr
Aug 22, 6:01 PM EDT	Special Weather Statement	CHS	Charleston	29 min
Aug 22, 6:21 PM EDT	Special Marine Warning	CHS		114 min
Aug 22, 6:30 PM EDT	Flash Flood Warning	CHS	Berkeley, Charleston	3 hr
Aug 22, 7:13 PM EDT	Special Weather Statement	CHS	Hampton	32 min
Aug 22, 7:58 PM EDT	Areal Flood Advisory	CHS	Charleston, Colleton, Dorchester	2 hr
Aug 22, 5:25 PM EDT	Special Weather Statement	CHS	Jenkins	35 min
Aug 22, 6:17 PM EDT	Special Weather Statement	CHS	Bulloch	28 min
Aug 22, 7:01 PM EDT	Special Weather Statement	CHS	Bryan	29 min
Aug 22, 7:35 PM EDT	Special Weather Statement	CHS	Evans	25 min
Aug 22, 7:52 PM EDT	Special Weather Statement	CHS	Effingham	23 min

Nearby

Special Weather Statements in South Carolina, 2026 Every special weather statement 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.