Severe Thunderstorm Warning 39, NWS Charleston, SC

507 
WWUS52 KCHS 071917
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
317 PM EDT Tue Jul 7 2026

SCC015-071927-
/O.CAN.KCHS.SV.W.0039.000000T0000Z-260707T1945Z/
Berkeley SC-
317 PM EDT Tue Jul 7 2026

...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR BERKELEY COUNTY...

The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.

&&

LAT...LON 3302 7973 3304 7972 3309 7966 3312 7964
      3316 7956 3314 7953 3315 7952 3317 7951
      3321 7947 3321 7943 3316 7937 3313 7927
      3310 7928 3306 7934 3301 7934 3299 7936
      3300 7953 3297 7956
TIME...MOT...LOC 1846Z 263DEG 13KT 3326 7940 3312 7944 3305 7970

$$


SCC019-071945-
/O.CON.KCHS.SV.W.0039.000000T0000Z-260707T1945Z/
Charleston SC-
317 PM EDT Tue Jul 7 2026

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT FOR
CHARLESTON COUNTY...

At 317 PM EDT, severe thunderstorms were located along a line from 10
miles northeast of Santee Coastal Reserve to 6 miles west of
McClellanville, moving east at 15 mph.

HAZARD...60 mph wind gusts and small hail.

SOURCE...Radar indicated.

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

Locations impacted include...
  McClellanville, Awendaw, Lighthouse Island, Hampton Plantation
  State Park, Cape Romain, Santee Coastal Reserve, Cape Island,
  Tibwin, Buck Hall and South Santee.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter inside a well-built structure and stay away from
windows. These storms are capable of producing damaging winds.

Continuous cloud to ground lightning is occurring with these storms.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3302 7973 3304 7972 3309 7966 3312 7964
      3316 7956 3314 7953 3315 7952 3317 7951
      3321 7947 3321 7943 3316 7937 3313 7927
      3310 7928 3306 7934 3301 7934 3299 7936
      3300 7953 3297 7956
TIME...MOT...LOC 1846Z 263DEG 13KT 3326 7940 3312 7944 3305 7970

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

SST

469 
WWUS52 KCHS 071936
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
336 PM EDT Tue Jul 7 2026

SCC019-071946-
/O.CAN.KCHS.SV.W.0039.000000T0000Z-260707T1945Z/
Charleston SC-
336 PM EDT Tue Jul 7 2026

...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR CHARLESTON COUNTY...

The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled. However, gusty winds are
still possible with these thunderstorms.

&&

LAT...LON 3302 7973 3304 7972 3309 7966 3312 7964
      3316 7956 3314 7953 3315 7952 3317 7951
      3321 7947 3321 7943 3316 7937 3313 7927
      3310 7928 3306 7934 3301 7934 3299 7936
      3300 7953 3297 7956
TIME...MOT...LOC 1917Z 263DEG 13KT 3327 7926 3314 7930 3306 7956

$$

SST

Area Forecast Discussion
National Weather Service Charleston SC
138 PM EDT Tue Jul 7 2026

.WHAT HAS CHANGED...
All Key Messages and Sections were updated. An Excessive Heat
Watch has been issued for the coastal corridor on Wednesday,
including both the Charleston and Savannah Metro areas, with a
Heat Advisory for much of interior Southeast Georgia into
Southeast South Carolina.

&&

.KEY MESSAGES...
- 1) Heat and humidity will continue across southeast Georgia
  and the South Carolina Lowcountry today. Strong to severe
  thunderstorms are possible along and east of I-95 this
  afternoon and evening. Heavy downpours could lead to pockets
  of excessive rainfall.

- 2) Hot and humid conditions will persist through much of the week.

- 3) Typical summertime afternoon and evening thunderstorms this
  week.

&&

.DISCUSSION...

KEY MESSAGE 1: Heat and humidity will continue across southeast
Georgia and the South Carolina Lowcountry today. Strong to severe
thunderstorms are possible along and east of I-95 this afternoon and
evening. Heavy downpours could lead to pockets of excessive rainfall.

Another hot day prevails across the region under mostly sunny
skies, with latest observations showing temperatures in the low
to mid 90s. This coupled with dewpoints in the low to mid 70s
has resulted in heat index values between 105 to 110 degrees,
with the highest values noted along the coast. Given that cloud
cover and precipitation chances are forecast to increase through
the afternoon, do not plan to make any changes to the current
Heat Advisory, which remains valid until 7 PM.

As noted in the previous discussion, these hot and humid conditions
are expected to result in scattered showers and thunderstorms, a few
of which could become strong to severe. In terms of dynamics, latest
soundings show MUCAPE between 1500 to 2500 J/Kg, low level lapse
between 7.5 to 8 deg C/km, and bulk shear values near 15 to 20 kts.
DCAPE values also look to gradually increase between 800 to 1000
J/kg. Thus, in terms of severe weather, expect damaging winds, small
hail, and frequent lightning to be the primary hazards with any
storm. In addition, storm motions around 10 mph and PWATs around 2.2
inches will likely lead to swaths of heavy rainfall between 2-3
inches. While the threat for flash flooding remains low, a few flood
advisories may still be needed for some coastal SC/GA counties,
including Berkeley County. Otherwise, should see convection quickly
wane near sunset, with overnight lows forecast to remain in the mid
to upper 70s.

KEY MESSAGE 2: Hot and humid conditions will persist through much of
the week.

The heat and humidity will build Wednesday as ridging aloft
strengthens. 850 hPa temperature are forecast to warm to 20-22C with
low-thicknesses peaking 1437-1440 meters. These values typically
support highs within a 1-2 degrees either side of 100 degrees.
Dewpoints are expected to mix out somewhat (lower-mid 70s) during
the afternoon, but dewpoint pooling (upper 70s/lower 80s)
near/behind the sea breeze should push heat indices to dangerous
levels across parts of the coastal corridor with max heat indices
peaking in the 112-116 degree range for several hours. Farther
inland, heat indices should generally peak 105-110 range. Given the
above noted trends, an Excessive Heat Watch has been posted for the
coastal corridor, including both the Charleston and Savannah Metro
areas, with a Heat Advisory for much of interior Southeast Georgia
into Southeast South Carolina. Only the area from Jenkins County to
Hampton County look to fall short of the 108 heat index criteria for
a Heat Advisory. Warming temperatures aloft will help limit
afternoon convection with only isolated coverage expected. There are
some CAMs that support a bit more coverage so this will need to be
watched as some areas could fall short of warning/advisory criteria
if convection becomes more scattered.

Heat is expected to continue through the end of the week with
heat indices likely around the 105 to 110 range and highs in the
mid to upper 90s area wide. Heat products look to continue at
least through Thursday and possibly into Friday with the highest
probability of reaching advisory criteria mainly east of I-95
and closer to the coast including the Charleston and Savannah
metro areas. While heat indices may not be as high as early
week, the bigger issue will be long duration heat stress mainly
along the coastal areas where heat indices might not drop to
below 100 degrees until well into the evening and overnight
hours with lows in the upper 70s to low 80s. Several days of
intense heat and minimal cooling overnight has been reflected in
the HeatRisk product with widespread Major (level 3 of 4) and a
corridor of Extreme (level 4 of 4) along the immediate coast
Thursday and Friday. Regardless of any heat products this will
continue to bring a risk of heat-related impacts, especially to
those more vulnerable to heat or those without adequate
cooling/hydration.

KEY MESSAGE 3: Typical summertime afternoon and evening
thunderstorms this week.

The region will be situated between high pressure offshore and a
trough of low pressure inland through much of the week, with ridging
the primary feature aloft. Larger scale forcing is lacking, but
isolated to perhaps scattered showers and thunderstorms will be
possible each day largely due to daytime heating and mesoscale
boundaries like the sea breeze. Coverage will be highest in the
afternoon and early evenings, before dwindling after sunset with
loss of insolation. While the environment favors mainly pulse-type
convection, a couple strong to severe storms with damaging wind
gusts cannot be ruled out. Locally heavy rainfall is also possible
with any storms, but flooding risk is low especially given the hot
and dry conditions of late.

Rain chances will likely increase Sunday into Monday as a more
potent shortwave trough moves across the mid-atlantic. Expect
storm coverage to increase Sunday afternoon compared to the
normal summertime pattern. Storms will likely be focused along a
sagging front that will slowly drift south with time. Given the
increased coverage and maybe a little more deep layer flow, a
couple strong to severe storms with damaging winds may be
possible on Sunday.

&&

.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
Rain chances will likely increase Sunday into Monday
as a more potent shortwave troughs move across the mid-atlantic.
Expect storm coverage to increase Sunday afternoon compared to the
normal summertime pattern. Storms will likely be focused along a
sagging front that will slowly drift south with time. Given the
increased coverage and maybe a little more deep layer flow, a couple
strong to severe storms with damaging winds may be possible on
Sunday.

Extended Aviation Outlook: There will be a risk for tstm impacts at
the terminals each afternoon/evening, especially at KCHS and
KSAV.

&&

.MARINE...
Through Tonight: This afternoon and evening, strong thunderstorms
may slide off the GA/SC coast. Some of these storms may require
Special Marine Warnings. Otherwise, the pressure pattern should
support south-southwest winds between 15 to 20 kts, with occasional
gusts to 25 kts. Wave heights are forecast to favor 3 to 4 ft.

Wednesday: A southerly flow regime will prevail with some sea breeze
enhancements likely along the land/sea interface and Charleston
Harbor where gusts near 20 kt will be possible. A typical summer
time nocturnal surge will impact the area Wednesday night with south
to southwest winds 15-20 kt. Gusts could near 25 kt at times, but
durations do not quite look frequent enough for a Small Craft
Advisory at this time.

&&

.CLIMATE...
Record High Temperatures:

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

July 10:
KCHS: 100/1986
KCXM: 99/1986

July 11:
KCXM: 100/2001

July 12:
KCXM: 97/1966

Record High Minimum Temperatures:

July 7:
KCHS: 80/2017
KCXM: 82/2022
KSAV: 80/1883

July 8:
KCHS: 82/2016
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
KCXM: 82/1998

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...Heat Advisory from 11 AM to 7 PM EDT Wednesday for GAZ099>101-
     114-115-137-216-238-240.
     Heat Advisory until 7 PM EDT this evening for GAZ217>219-239-
     241.
     Extreme Heat Watch from Wednesday morning through Wednesday
     evening for GAZ217>219-239-241.
SC...Heat Advisory from 11 AM to 7 PM EDT Wednesday for SCZ043-044-
     147.
     Heat Advisory until 7 PM EDT this evening for SCZ045-148>152.
     Extreme Heat Watch from Wednesday morning through Wednesday
     evening for SCZ045-148>152.
MARINE...None.

&&

Preliminary Local Storm Report
National Weather Service Charleston SC
1254 PM EDT Tue Jul 07 2026

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

0215 PM     Tstm Wnd Dmg     1 NNW North Charleston  32.87N  79.99W
07/05/2026                   Charleston         SC   Fire Dept/Rescue

            Fire Department reported a tree blocking a CSX railroad
            track near the 1300 block of Bexley Street.

&&

Event Number CHS2600626

ACD

Special Weather Statement
National Weather Service Charleston SC
221 PM EDT Tue Jul 7 2026

SCZ045-150-071845-
Charleston SC-Inland Berkeley SC-
221 PM EDT Tue Jul 7 2026

...A LINE OF STRONG THUNDERSTORMS WILL IMPACT CHARLESTON AND BERKELEY
COUNTIES UNTIL 245 PM EDT...

At 221 PM EDT, Doppler radar was tracking a line of strong
thunderstorms extending from near Hampton Plantation State Park to 8
miles north of Awendaw, moving northeast at 25 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
  Awendaw, Halfway Creek, Shulerville, Newland, Buck Hall, Tibwin,
  McClellanville, Germantown, Hampton Plantation State Park and
  Santee Coastal Reserve.

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.

&&

LAT...LON 3307 7976 3328 7958 3327 7956 3326 7956
      3327 7955 3325 7955 3324 7949 3325 7948
      3324 7948 3324 7947 3323 7947 3324 7946
      3322 7946 3321 7943 3318 7940 3316 7937
      3315 7930 3301 7962
TIME...MOT...LOC 1821Z 247DEG 20KT 3322 7952 3312 7955 3310 7965

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

ST