Severe Thunderstorm Warning 12, NWS Charleston, SC

Area Forecast Discussion
National Weather Service Charleston SC
229 PM EDT Sun Jun 14 2026

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

&&

.KEY MESSAGES...
- 1) Unseasonably hot weather with strong to severe
  thunderstorms today.

- 2) Showers and thunderstorms expected to continue into early
  next week with a persistent summertime pattern.

- 3) Minor coastal flooding possible along Charleston and
  Colleton County coasts during evening high tides tonight and
  Monday evening.

&&

.DISCUSSION...
KEY MESSAGE 1: Unseasonably hot weather with strong to severe
thunderstorms today.

Morning high clouds have shift over the Atlantic, leaving only thin
high clouds across the region this afternoon. Temperatures have
responded to the increased insolation, with values climbing into the
mid 90s across the CWA. Temperatures should peak in the mid to upper
90s this afternoon. Combined with dewpoints in the mid 70s, heat
index values should range between 105 to 110 across the coastal
counties. This area has been highlighted with a Heat Advisory until
6 PM.

Showers and thunderstorms have quickly developed across SE GA as
temperatures crossed the convective temperature. These storms over
inland GA were developing within a broad sfc trough. KCLX showed
that the sea breeze was still near the coast early this afternoon.
As the inland convection continues to develop, the associated
outflow boundaries may intersect with the sea breeze. This process
should yield a large cluster of thunderstorms, generally along the I-
95 corridor from Savannah to Berkeley County. SPC mesoanalysis
indicates that SBCAPE may exceed 4000 J/kg with DCAPE values between
600-800 J/kg. In addition, PW values across most of the area is
expected to remain around 2 inches. Storms within this very hot and
humid should develop very strong and tall updrafts, with core
heights reaching around 40 kft. Machine learning guidance indicates
the potential for damaging wind gusts may peak around 30% within 25
nm of any given point this afternoon. A few Severe Thunderstorm
Warnings could be need later this afternoon into early this evening,
highlighting any expected damaging wind gusts. The primary time
window for severe thunderstorms is expected between 4 to 7 PM from
the I-95 corridor to the coast.

KEY MESSAGE 2: Showers and thunderstorms expected to continue into
early next week with a persistent summertime pattern. Isolated
strong-severe thunderstorm possible today.

A classic early-summer pattern will remain established across
southeast South Carolina and southeast Georgia through early next
week. Atlantic high pressure will remain anchored offshore while mid-
lvl ridging across the western Atlantic periodically interacts with
embedded shortwave perturbations rotating around the ridge
periphery. Low-lvl flow remains generally south to southwest,
maintaining a rich maritime tropical airmass through next week. This
pattern will yield afternoon showers and thunderstorms each
afternoon and evening.

Similar to last couple of days, forecast soundings indicate
PWAT values ranging from 1.9 to 2.3 inches through the period
(near the 90th percentile for mid-June). This combined with
surface dewpoints in the low to mid 70s should yield SBCAPE
values between 2500-3000 J/kg amid peak heating. Mid-lvl lapse
rates remain relatively modest with values ranging from 5.5-6.0
C/km, suggesting pulse-type convection will dominate through the
period. Expect the afternoon seabreeze to push inland each day
and collide with other outflow boundaries, yielding the primary
focus for convection initiation.

As we head into early to mid-week, broad mid-lvl troughing will
likely encompass the eastern half of the CONUS. At the surface, a
weak cold front will approach the region on Monday, and then push
offshore by Tuesday evening. Convection coverage will likely
increase from late morning near the coastline before expanding more
inland in the afternoons. Highest PoPs will likely occur along and
west of I-95 corridor where seabreeze interactions maximize.

This pattern should remain active into the end of the week as this
broad mid-lvl troughing continues aloft, with another cold front
moving towards the area by late week/early weekend.

KEY MESSAGE 3: Minor coastal flooding possible along Charleston and
Colleton County coasts during evening high tides tonight and Monday
evening.

Based off of the latest tidal departures and local climo tool,
we will issue a Coastal Flood Advisory for Charleston and
coastal Colleton Counties from 7 PM to 10 PM this evening.

Breezy south-southwesterly winds each day along with today's lunar
Perigee (June 14th) and New Moon (June 15th) should result in
elevated tidal departures above 1/2 ft today into early next week,
setting the stage for minor coastal flooding along the Charleston
and Colleton County coasts during evening high tide cycles. The
latest TWL forecast calls for 7.0 - 7.2 ft MLLW in the
Charleston Harbor this evening, and 7.0 - 7.2 ft MLLW are
possible during evening high tides Monday night as astronomical
influences peak and breezy onshore winds persist. Coastal Flood
Advisories may again be needed for the Charleston and Colleton
county coastlines.

&&

.AVIATION /18Z SUNDAY THROUGH FRIDAY/...
Prior to the 18Z TAFs, KCLX and visible satellite detected a sea
near KSAV, with some developing Cu near KCHS and KJZI. The TAFs will
feature a TEMPO during the heat of the day to indicate the potential
of moderate thunderstorms. Overnight, conditions should remain VFR
with light SW winds.

Extended Aviation Outlook: VFR conditions expected to prevail at
CHS/JZI/SAV terminals. However, brief flight restrictions are
possible with afternoon showers and/or thunderstorms through the
middle of this week.

&&

.MARINE...
Tonight through Monday, the pressure pattern will support southwest
winds between 10 to 15 kts with gusts in the lower 20s. Wave heights
are forecast to remain between 2 to 4 ft. Winds should generally
continue tonight into Monday. Some thunderstorms could push off the
SC coast this evening, possibly requiring Special Marine
Warnings.

Tuesday through Friday: Expect generally south-southwesterly winds
with speeds ranging from 15 to 20 kts with gusts up to 22-24 kts as
Atlantic high pressure persists across the local waters. There could
be the need for Small Craft Advisories for Thursday evening into
Friday ahead of an approaching cold front. Seas should remain below
6 feet throughout the period.

Rip Currents: A Moderate Risk of rip currents is forecast through
this afternoon and Monday along the southeast South Carolina and
southeast Georgia beaches given the combination of elevated winds
and a lingering south-southwesterly swell.

&&

.CLIMATE...
Record High Temperatures:

June 14
KCHS: 99/2010
KCXM: 97/1981

June 15
KCHS: 98/2015

Record High Minimum Temperatures:

June 14
KCHS: 79/2010
KCXM: 81/2010

June 15
KCHS: 80/2010

June 18
KCHS: 78/2015

June 19
KCHS: 79/2025
KCXM: 81/2025
KSAV: 79/1881

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...Heat Advisory until 6 PM EDT this evening for GAZ217-219-239-
     241.
SC...Heat Advisory until 6 PM EDT this evening for SCZ045-148>152.
     Coastal Flood Advisory from 7 PM to 10 PM EDT this evening for
     SCZ149-150.
MARINE...None.

&&

Dennis/NED

Special Weather Statement
National Weather Service Charleston SC
213 PM EDT Sun Jun 14 2026

SCZ148-149-141845-
Coastal Colleton SC-Beaufort SC-
213 PM EDT Sun Jun 14 2026

...A STRONG THUNDERSTORM WILL IMPACT BEAUFORT AND COLLETON COUNTIES
UNTIL 245 PM EDT...

At 213 PM EDT, Doppler radar was tracking a strong thunderstorm over
Gardens Corner, moving east at 10 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
  Dale, Gardens Corner, Sheldon, Nemours Plantation, Lobeco and
  Chisolm Point.

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.

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3254 8080 3262 8082 3267 8071 3267 8067
      3266 8067 3268 8062 3253 8058
TIME...MOT...LOC 1813Z 267DEG 8KT 3260 8073

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 TO 55 MPH

ACD

Preliminary Local Storm Report
National Weather Service Charleston SC
235 PM EDT Sun Jun 14 2026

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

0202 PM     Tstm Wnd Gst     Claxton Evans County Ai 32.19N  81.87W
06/14/2026  M47 mph          Evans              GA   AWOS

            Claxton AWOS reported a thunderstorm wind gust of 47
            mph.

&&

Event Number CHS2600471

DAK

Special Weather Statement
National Weather Service Charleston SC
247 PM EDT Sun Jun 14 2026

SCZ044-045-141915-
Inland Berkeley SC-Dorchester SC-
247 PM EDT Sun Jun 14 2026

...A STRONG THUNDERSTORM WILL IMPACT BERKELEY AND DORCHESTER COUNTIES
UNTIL 315 PM EDT...

At 247 PM EDT, Doppler radar was tracking a strong thunderstorm over
Ridgeville, moving east at 15 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
  Summerville, Goose Creek, Ladson, Givhans Ferry State Park,
  Ridgeville, Jedburg, Knightsville, Sangaree, College Park and
  Givhans.

This includes I-26 between mile markers 189 and 204.

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.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3310 8039 3322 8010 3302 8000 3301 8000
      3300 8011 3299 8013 3299 8014 3300 8013
      3300 8012 3302 8015 3301 8018 3299 8015
      3296 8039
TIME...MOT...LOC 1847Z 273DEG 14KT 3305 8029

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 TO 55 MPH

ACD

Special Weather Statement
National Weather Service Charleston SC
304 PM EDT Sun Jun 14 2026

GAZ137-240-241-141930-
Coastal McIntosh GA-Long GA-Inland McIntosh GA-
304 PM EDT Sun Jun 14 2026

...A STRONG THUNDERSTORM WILL IMPACT MCINTOSH AND LONG COUNTIES UNTIL
330 PM EDT...

At 304 PM EDT, Doppler radar was tracking a strong thunderstorm over
Townsend, moving east at 20 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
  Darien, Jones, Eulonia, Townsend, Pine Harbor, Crescent, Meridian,
  Carnigan and Cox.

This includes I-95 in Georgia near mile marker 50...and between mile
markers 47 and 49...and between mile markers 51 and 67.

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.

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3153 8166 3168 8156 3167 8146 3164 8143
      3165 8142 3164 8139 3165 8138 3164 8125
      3129 8141 3131 8142 3131 8144 3133 8144
      3133 8145 3134 8148 3140 8158 3145 8163
      3148 8162 3151 8166 3153 8165
TIME...MOT...LOC 1904Z 281DEG 18KT 3157 8154

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 TO 55 MPH

ACD

Special Weather Statement
National Weather Service Charleston SC
317 PM EDT Sun Jun 14 2026

GAZ216-218-219-SCZ147-148-151-141945-
Coastal Chatham GA-Inland Bryan GA-Beaufort SC-Inland Jasper SC-
Inland Chatham GA-Coastal Jasper SC-
317 PM EDT Sun Jun 14 2026

...A STRONG THUNDERSTORM WILL IMPACT BEAUFORT...JASPER...CHATHAM AND
BRYAN COUNTIES UNTIL 345 PM EDT...

At 317 PM EDT, Doppler radar was tracking a strong thunderstorm over
Garden City, moving east at 40 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
  Pooler, Bluffton, Richmond Hill, Tybee Island, Downtown Savannah,
  Hutchinson Island, Midtown Savannah, Hunter Army Airfield, Windsor
  Forest and Bellinger Hill Area.

This includes the following highways...
I-16 between mile markers 151 and 168. I-95 in Georgia between mile
markers 90 and 108. I-516 between mile markers 3 and 9.

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.

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3207 8137 3211 8138 3215 8131 3224 8090
      3207 8084 3205 8087 3205 8084 3199 8082
      3198 8082 3198 8083 3194 8087 3195 8136
TIME...MOT...LOC 1917Z 260DEG 34KT 3207 8118

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 TO 55 MPH

ACD

Preliminary Local Storm Report
National Weather Service Charleston SC
332 PM EDT Sun Jun 14 2026

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

0315 PM     Tstm Wnd Gst     Savannah Airport        32.13N  81.20W
06/14/2026  M52 mph          Chatham            GA   ASOS

            A thunderstorm wind gust of 52 mph was recorded at
            KSAV.

&&

Event Number CHS2600472

DAK