941
FXUS62 KCHS 082326
AFDCHS
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
726 PM EDT MON JUN 8 2026
WHAT HAS CHANGED
THE AVIATION SECTION WAS UPDATED FOR THE 00Z TAF ISSUANCE.
KEY MESSAGES
- 1) GRADUAL INCREASE IN RAIN CHANCES THIS WEEK.
- 2) AFTERNOON HEAT INDEX VALUES MAY CLIMB INTO THE 100 TO 105
DEGREE RANGE ACROSS THE REGION FRIDAY THROUGH SUNDAY.
DISCUSSION
KEY MESSAGE 1: GRADUAL INCREASE IN RAIN CHANCES THIS WEEK.
A BUILDING UPPER RIDGE AXIS TUESDAY INTO WEDNESDAY WILL MAINTAIN
FAIRLY DRY WEATHER, ESPECIALLY GIVEN A RELATIVELY DRY BOUNDARY
LAYER FROM HIGH PRESSURE CENTERED TO THE NORTH. ISOLATED SHOWERS
OR TSTMS ARE POSSIBLE IN THE AFTERNOON ACROSS INLAND AREAS,
MAINLY TUESDAY. THURSDAY INTO FRIDAY, LOW LEVEL MOISTURE WILL
INCREASE AS THE SURFACE HIGH SHIFTS EAST. THE UPPER RIDGE WILL
WEAKEN, ALLOWING AN INCREASE IN SHORTWAVE ENERGY MOVING THROUGH.
WE'LL LIKELY SEE CONSIDERABLY MORE ACTIVE DIURNAL CONVECTION
THURSDAY INTO FRIDAY. A COLD FRONT IS EXPECTED TO APPROACH OVER
THE WEEKEND, LIKELY RESULTING IN NUMEROUS TO WIDESPREAD SHOWERS
AND THUNDERSTORMS DURING THE DAYTIME HOURS.
KEY MESSAGE 2: AFTERNOON HEAT INDEX VALUES MAY CLIMB INTO THE
100 TO 105 DEGREE RANGE ACROSS THE REGION FRIDAY THROUGH SUNDAY.
AS SURFACE RIDGING SITUATES ITSELF ACROSS THE SOUTHEASTERN
CONUS, NEAR TO ABOVE AVERAGE TEMPERATURES WILL BE APPARENT LATE
THIS WEEK INTO THE WEEKEND. EXPECT TEMPERATURES TO CLIMB INTO
THE MID TO UPPER 90S ON THURSDAY THROUGH SUNDAY. THIS COMBINED
WITH INCREASING HUMIDITY LEVELS COULD YIELD AFTERNOON HEAT INDEX
VALUES RANGING BETWEEN 100 TO 105 DEGREES (ESP. ALONG THE
COASTLINE). THUS, HEAT ADVISORIES COULD BE POSSIBLE ON FRIDAY
AND SATURDAY FOR PORTIONS OF THE REGION, HOWEVER AFTERNOON HEAT
INDEX VALUES (AS OF RIGHT NOW) DO NOT MEET THRESHOLD CRITERIA.
THIS WILL CONTINUE TO BE MONITORED OVER THE NEXT SEVERAL DAYS.
AVIATION /00Z TUESDAY THROUGH SATURDAY/
VFR CONDITIONS WILL PREVAIL AT CHS/JZI/SAV TERMINALS THROUGH 00Z
WEDNESDAY.
EXTENDED AVIATION OUTLOOK: VFR CONDITIONS ARE EXPECTED TO PREVAIL AT
CHS/JZI/SAV TERMINALS. HOWEVER, BRIEF FLIGHT RESTRICTIONS ARE
POSSIBLE WITH AFTERNOON SHOWERS AND/OR THUNDERSTORMS ON THURSDAY AND
FRIDAY.
MARINE
THROUGH TONIGHT: LIGHT SOUTHEASTERLY WINDS AT 5 TO 10 KT WILL
PERSIST AS A BACKDOOR COLD FRONT GRADUALLY APPROACHES THE LOCAL
WATERS FROM THE NORTH. SEAS WILL RANGE FROM 1 TO 3 FT.
TUESDAY THROUGH FRIDAY: MARINE CONDITIONS WILL REMAIN ON THE
QUIET SIDE THROUGH THE END OF THE WEEK. A WEAK COLD FRONT WILL
ATTEMPT TO APPROACH THE LOCAL WATERS ON TUESDAY. THEREAFTER,
HIGH PRESSURE WILL DOMINATE THROUGH THE REMAINDER OF THE WEEK.
EXPECT A TYPICAL SUMMERTIME PATTERN WITH THE MODEST SURGE OF
WINDS ALONG THE COASTLINE AS THE AFTERNOON SEA BREEZE TRACKS
INLAND.
CHS WATCHES/WARNINGS/ADVISORIES
GA...NONE.
SC...NONE.
MARINE...NONE.
BRS
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