Severe Thunderstorm Warning 41, NWS Charleston, SC

157 
WWUS52 KCHS 081937
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
337 PM EDT Wed Jul 8 2026

SCC015-019-082000-
/O.CON.KCHS.SV.W.0041.000000T0000Z-260708T2000Z/
Berkeley SC-Charleston SC-
337 PM EDT Wed Jul 8 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 4 PM EDT FOR
BERKELEY AND CHARLESTON COUNTIES...

At 337 PM EDT, a severe thunderstorm was located over Cainhoy, moving
north at 5 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
  North Charleston, Mount Pleasant, Goose Creek, Hanahan, Daniel
  Island, Naval Weapons Station Charleston, Downtown Charleston, Isle
  Of Palms, Awendaw and Mount Pleasant Regional Airport.

This includes the following highways...
I-26 between mile markers 215 and 218. I-526 between mile markers 19
and 31.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds.

Torrential rainfall is also occurring with this storm. Do not drive
your vehicle through flooded roadways.

&&

LAT...LON 3285 8002 3303 7999 3301 7951 3300 7951
      3300 7953 3296 7957 3295 7955 3290 7955
      3288 7957 3283 7966 3279 7969 3278 7970
      3277 7973
TIME...MOT...LOC 1920Z 200DEG 3KT 3289 7986

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

391 
WWUS52 KCHS 081958
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
358 PM EDT Wed Jul 8 2026

SCC015-019-082008-
/O.EXP.KCHS.SV.W.0041.000000T0000Z-260708T2000Z/
Berkeley SC-Charleston SC-
358 PM EDT Wed Jul 8 2026

...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 4 PM EDT FOR BERKELEY
AND CHARLESTON COUNTIES...

The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However, gusty
winds and heavy rain are still possible with this thunderstorm.

&&

LAT...LON 3285 8002 3303 7999 3301 7951 3300 7951
      3300 7953 3297 7956 3296 7957 3295 7955
      3292 7955 3290 7955 3289 7956 3288 7957
      3283 7966 3282 7967 3279 7969 3278 7970
      3277 7973
TIME...MOT...LOC 1937Z 200DEG 3KT 3290 7985

$$

Area Forecast Discussion
National Weather Service Charleston SC
224 PM EDT Wed Jul 8 2026

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

&&

.KEY MESSAGES...
- 1) A prolonged heat wave will maintain hot and humid conditions
  for the majority of the week.

- 2) Typical summertime afternoon and evening thunderstorms this
  week with increasing rain chances Sunday into Monday.

&&

.DISCUSSION...
KEY MESSAGE 1: A prolonged heat wave will maintain hot and humid
conditions for the majority of the week.

The heat is on across the low country with several observations
on the humid side of the seabreeze approaching 110 to 113 mainly
across the coastal strip. Given the rather impressive high
pressure in place holding off most convection until later this
afternoon, its is probably safe to say that most areas should
reach at least advisory criteria and remain at advisory criteria
for the remainder of the afternoon. Excessive heat conditions
seem to be occurring right at or just east of the seabreeze
where downright disgusting dewpoints in the upper 70s to near
80 are combining with air temps in the mid to upper 90s. The
only relief from the heat will be any showers this afternoon but
that might be hard to come by. Very little relief from the heat
is expected tonight as lows will only drop into the upper 70s
to low 80s and heat indices will likely remain in the mid to
upper 90s well after midnight tonight, especially for the
coastal areas. These warm overnight conditions could result in
prolonged heat stress, especially for more vulnerable
communities and those without adequate cooling overnight.

Oppressive heat and humidity will continue Thursday, Friday, and
Saturday. The ridge aloft will maintain control through the end of
the week, but then starts to get suppressed to the south as west to
east oriented troughing drifts in from the north over the weekend.
High temperatures look quite similar each day Thursday through
Saturday, with widespread upper 90s and isolated instances of triple
digits. Surface winds will start off each day out of the west-
southwest, allowing temperatures to rise into the upper 90s. Then
the sea breeze will take hold and push mid to upper 70s dewpoints
inland. The result is expected to yield the highest heat indices
along the coastal corridor with values well into the 105-110 degree
range and some areas into the 110-115 degree range. Further inland,
heat indices should mostly top out around 105. To make conditions
more uncomfortable, overnight lows will likely linger in the upper
70s, and even low 80s right along the coast. For heat headlines, the
configuration of the Heat Advisory and Extreme Heat Warning will be
nearly identical to Wednesday with the only difference being Inland
Berkeley as an advisory and not a warning. Then for Friday and
Saturday, the footprint of the Heat Advisory will likely shrink and
we might not even need an Extreme Heat Warning area. Also,
convective coverage each afternoon does not look high enough to
provide a significant disruption to the heat and humidity. Starting
Sunday, and especially into next week, temperatures should cool off
as a boundary sags into the region and supports increased rain
chances and greater coverage of thunderstorms each day.

KEY MESSAGE 2: Typical summertime afternoon and evening thunderstorms
this week.

Satellite and radar observations this afternoon have already
shown some signs of convective develop along the seabreeze,
mainly north of the Charleston metro across Berkeley county.
Overall guidance still remains rather weak with convective
development; however, given trends and the slow progression of
the seabreeze a few isolated thunderstorms should be expected
over the next couple of hours. Given rather warm 850 mb temps
from subsidence underneath the ridge, storms may struggle and
will likely focus where what outflows that do develop interact
with the seabreeze. Storms should subside by early evening.

The pattern should continue to support only isolated
to scattered convective coverage Thursday through Saturday, due
to a lack of any notable features to drive development. There
will continue to be a low end threat of an isolated severe storm
or locally heavy rainfall, mainly where boundary interactions
occur. As we move into Sunday and next week, a pattern change
looks to be on the horizon. The upper ridge is expected to get
suppressed to the south as a west to east trough drops in from
the north. This should bring a front into the area which will
linger for a few days. Increased convective coverage is
expected, which will hopefully bring beneficial rains to the
area and possibly even some risk of locally excessive rainfall.
&&

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
VFR conditions should prevail across the area through most of
the forecast. Winds have remained light out of the southwest;
except behind the seabreeze where some gustier conditions to
around 20 knots are possible out of the south-southwest.
Combination of satellite and radar observations shows some
isolated showers and thunderstorms have begun to develop along
the seabreeze interface mainly in the vicinity of KCHS. Winds
and storms should relax during the early evening with VFR
conditions prevailing for the remainder of the overnight and
morning hours.

Extended Aviation Outlook: Mostly VFR. There will be a low end
risk of thunderstorm impacts each afternoon and evening,
primarily at KCHS and KSAV.

&&

.MARINE...
Today through tonight: Overall pattern that has been in place
should remain in place with south-southwest winds between 10 to
15 kts, with occasional gusts into the low 20 kts. Wave heights
are forecast to favor 3 to 4 ft.

Thursday through Monday: The overall pattern will be on repeat
Thursday through Saturday as southwest flow surges each afternoon
and evening. Wind speeds should solidly reach the 15-20 knot range
each day, with gusts approaching 25 knots along the SC coast and the
adjacent coastal waters. Seas should mostly be in the 2-4 ft range,
but could rise up to around 5 ft during times of peak surging in the
evening hours. It is possible that short duration Small Craft
Advisories could be needed, mainly for the SC waters and the
Charleston Harbor. Then by Sunday, and especially Monday, conditions
should feature lower wind speeds as a boundary drops into the area
from the north.

&&

.CLIMATE...
Record High Temperatures:

July 8:
KCHS: 100/2016
KSAV: 101/2010

July 9:
KCXM: 99/1986

July 10:
KCHS: 100/1986
KCXM: 99/1986
KSAV: 102/1879

July 11:
KCXM: 100/2001

July 12:
KCXM: 97/1966

Record High Minimum Temperatures:

July 8:
KCXM: 83/2016
KSAV: 80/1990

July 9:
KCHS: 80/1998
KCXM: 85/1998
KSAV: 80/1883

July 10:
KCHS: 81/1986
KCXM: 82/1986

July 11:
KCHS: 80/2016
KCXM: 82/2016

July 12:
KCHS: 79/2020

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...Heat Advisory until 7 PM EDT this evening for GAZ099>101-114-
     115-137-216-238-240.
     Extreme Heat Warning until 7 PM EDT this evening for
     GAZ217>219-239-241.
SC...Heat Advisory until 7 PM EDT this evening for SCZ043-044-147.
     Extreme Heat Warning until 7 PM EDT this evening for SCZ045-
     148>152.
MARINE...None.

&&

Black

Preliminary Local Storm Report
National Weather Service Charleston SC
202 PM EDT Wed Jul 08 2026

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

0147 PM     Extreme Heat     2 NNW Garris Landing    32.97N  79.67W
07/08/2026  M116.0 F         Charleston         SC   Other Federal

            Heat index 116 at the Wanbaw RAWS site.

&&

Event Number CHS2600631

Preliminary Local Storm Report
National Weather Service Charleston SC
204 PM EDT Wed Jul 08 2026

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

1200 PM     Extreme Heat     Bennetts Point          32.56N  80.46W
07/08/2026  M113.0 F         Colleton           SC   Other Federal

            The NERRS Site at Bennetts Point reported a heat index
            of 113

&&

Event Number CHS2600632

Preliminary Local Storm Report
National Weather Service Charleston SC
212 PM EDT Wed Jul 08 2026

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

0200 PM     Extreme Heat     1 SE Charleston         32.77N  79.92W
07/08/2026  M113.0 F         AMZ340             SC   Official NWS Obs

            Heat index 113 at Riley Waterfront Park in Downtown
            Charleston.

&&

Event Number CHS2600633

Special Weather Statement
National Weather Service Charleston SC
256 PM EDT Wed Jul 8 2026

SCZ150-152-081930-
Charleston SC-Tidal Berkeley SC-
256 PM EDT Wed Jul 8 2026

...A STRONG THUNDERSTORM WILL IMPACT CHARLESTON AND BERKELEY COUNTIES
UNTIL 330 PM EDT...

At 256 PM EDT, Doppler radar was tracking a strong thunderstorm over
Mount Pleasant Regional Airport, moving southeast 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...
  Mount Pleasant, Isle Of Palms, Awendaw, Capers Inlet, Price Inlet,
  Mount Pleasant Regional Airport, Garris Landing, Bull Island, Boone
  Hall Plantation and Mount Pleasant Towne Centre.

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 3288 7987 3294 7980 3294 7977 3296 7977
      3296 7976 3300 7971 3292 7955 3290 7955
      3288 7957 3283 7966 3279 7968 3278 7969
      3275 7977
TIME...MOT...LOC 1855Z 315DEG 7KT 3289 7975

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

Preliminary Local Storm Report
National Weather Service Charleston SC
302 PM EDT Wed Jul 08 2026

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

0256 PM     Extreme Heat     Marine Corps Air Statio 32.49N  80.70W
07/08/2026  M114.0 F         Beaufort           SC   ASOS

            Heat index 114 at Beaufort MCAS.

&&

Event Number CHS2600634

Preliminary Local Storm Report
National Weather Service Charleston SC
311 PM EDT Wed Jul 08 2026

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

0308 PM     Extreme Heat     Charleston Airport      32.90N  80.04W
07/08/2026  M114.0 F         Charleston         SC   ASOS

            Heat index 114 at the Charleston International Airport.

&&

Event Number CHS2600635