112
FXUS62 KCHS 041817
AFDCHS
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
217 PM EDT SAT JUL 4 2026
WHAT HAS CHANGED
ALL KEY MESSAGES AND SECTIONS WERE UPDATED.
KEY MESSAGES
- 1) HOT TEMPERATURES AND DRY CONDITIONS WILL PERSIST THIS
INDEPENDENCE DAY.
- 2) ABOVE NORMAL TEMPERATURES EXPECTED TO IMPACT THE AREA
THROUGH THE UPCOMING WEEK. HUMIDITY WILL INCREASE ON SUNDAY
AND REMAIN ELEVATED INTO NEXT WEEK, ESPECIALLY ALONG THE
COAST. HEAT ADVISORIES COULD BE NEEDED EACH AFTERNOON THROUGH
MUCH OF NEXT WEEK.
- 3) TYPICAL SUMMERTIME CONVECTION RETURNS SUNDAY AND
WILL PERSIST INTO NEXT WEEK.
DISCUSSION
KEY MESSAGE 1: HOT TEMPERATURES AND DRY CONDITIONS WILL PERSIST
THIS INDEPENDENCE DAY.
UPPER LEVEL RIDGING HOLDS TIGHT ACROSS THE REGION THIS INDEPENDENCE
DAY, ALLOWING QUITE CONDITIONS TO PREVAIL. IN REGARD TO
TEMPERATURES, LATEST OBSERVATIONS SHOW VALUES IN THE LOW TO MID 90S
UNDER MOSTLY SUNNY SKIES. WITH DEWPOINTS IN THE UPPER 60S TO MID
70S, HAVE ALREADY SEEN SOME HEAT INDEX VALUES APPROACH 105 DEGREES.
WHILE THESE VALUES MAY INCREASE A BIT MORE IN THE COMING HOURS,
THINK THE DURATION AND OVERALL COVERAGE SHOULD REMAIN LIMITED ENOUGH
TO FORGO ANY HEAT HEADLINES AT THIS TIME. NONETHELESS, WE ENCOURAGE
FOLKS TO TAKE PRECAUTIONS WITH ANY OUTDOOR ACTIVITIES TODAY. THIS
CAN INCLUDE TAKING BREAKS IN THE SHADE/AC, APPLYING SUNSCREEN
FREQUENTLY, STAYING HYDRATED, AND CHECKING ON VULNERABLE POPULATIONS
LIKE CHILDREN AND ELDERLY. OTHERWISE, LOOK FOR MOSTLY CLEAR SKIES TO
PREVAIL TONIGHT. LOWS WILL REMAIN QUITE MILD, AS TEMPERATURES ONLY
FALL INTO THE MID TO UPPER 70S.
KEY MESSAGE 2: ABOVE NORMAL TEMPERATURES EXPECTED TO IMPACT THE AREA
THROUGH THE UPCOMING WEEK. HUMIDITY WILL INCREASE ON SUNDAY AND
REMAIN ELEVATED INTO NEXT WEEK, ESPECIALLY ALONG THE COAST. HEAT
ADVISORIES COULD BE NEEDED EACH AFTERNOON THROUGH MUCH OF NEXT
WEEK.
UPPER LEVEL RIDGING HOLDS TIGHT ACROSS THE REGION THIS INDEPENDENCE
DAY, ALLOWING QUITE CONDITIONS TO PREVAIL. IN REGARD TO
TEMPERATURES, LATEST OBSERVATIONS SHOW VALUES IN THE LOW TO MID 90S
UNDER MOSTLY SUNNY SKIES. WITH DEWPOINTS IN THE UPPER 60S TO MID
70S, HAVE ALREADY SEEN SOME HEAT INDEX VALUES APPROACH 105 DEGREES.
WHILE THESE VALUES MAY INCREASE A BIT MORE IN THE COMING HOURS,
THINK THE DURATION AND OVERALL COVERAGE SHOULD REMAIN LIMITED ENOUGH
TO FORGO ANY HEAT HEADLINES AT THIS TIME. NONETHELESS, WE ENCOURAGE
FOLKS TO TAKE PRECAUTIONS WITH ANY OUTDOOR ACTIVITIES TODAY. THIS
CAN INCLUDE TAKING BREAKS IN THE SHADE/AC, APPLYING SUNSCREEN
FREQUENTLY, STAYING HYDRATED, AND CHECKING ON VULNERABLE POPULATIONS
LIKE CHILDREN AND ELDERLY. OTHERWISE, LOOK FOR MOSTLY CLEAR SKIES TO
PREVAIL TONIGHT. LOWS WILL REMAIN QUITE MILD, AS TEMPERATURES ONLY
FALL INTO THE MID TO UPPER 70S.
KEY MESSAGE 3: TYPICAL SUMMERTIME CONVECTION RETURNS SUNDAY AND
WILL PERSIST INTO NEXT WEEK.
DESPITE PERSISTENT UPPER RIDGING, PWATS ARE FORECAST TO INCREASE TO
2 INCHES OR GREATER, SUPPORTING THE RETURN OF A MORE TYPICAL
SUMMERTIME CONVECTIVE PATTERN. SCATTERED SHOWERS AND THUNDERSTORMS
WILL BE POSSIBLE EACH DAY, WITH THE GREATEST COVERAGE DURING THE
AFTERNOON AND EARLY EVENING AS INSTABILITY PEAKS. ENVIRONMENTAL
CONDITIONS WILL FAVOR MAINLY PULSE-TYPE CONVECTION, ALTHOUGH A FEW
STORMS COULD BECOME STRONG TO SEVERE EACH DAY WITH DAMAGING WIND
GUSTS AS THE PRIMARY HAZARD.
AVIATION /18Z SATURDAY THROUGH THURSDAY/
VFR CONDITIONS CONTINUE TO PREVAIL, WITH SOUTHERLY WINDS
BECOMING LIGHT AND VARIABLE OVERNIGHT.
EXTENDED AVIATION OUTLOOK: BRIEF FLIGHT RESTRICTIONS ARE POSSIBLE IN
AFTERNOON SHOWERS/THUNDERSTORMS LATE WEEKEND INTO NEXT WEEK.
MARINE
THROUGH TONIGHT: TRANQUIL CONDITIONS CONTINUE UNDER SFC HIGH
PRESSURE, WITH SOUTH/SOUTHWESTERLY WINDS UP TO 15 KTS, AND SEAS
BETWEEN 2 TO 3 FEET.
SUNDAY THROUGH THURSDAY: THE COASTAL WATERS WILL BE POSITIONED
BETWEEN HIGH PRESSURE OFFSHORE AND A TROUGH OF LOW PRESSURE INLAND
THROUGH THE PERIOD. WIND SPEEDS ARE FORECAST TO STAY BELOW SMALL
CRAFT ADVISORY CRITERIA THROUGH THE PERIOD, HOWEVER GUSTS IN THE LOW
20 KT RANGE ARE POSSIBLE, ESPECIALLY IN THE AFTERNOON AND EVENINGS.
SEAS WILL AVERAGE 2-4 FEET.
CLIMATE
RECORD HIGH TEMPERATURES:
JULY 4:
KCHS: 98/2023
JULY 5:
KSAV: 100/1902
JULY 7:
KCHS: 99/1954
RECORD HIGH MINIMUM TEMPERATURES:
JULY 5:
KCHS: 78/2017
KCXM: 82/2016
KSAV: 78/2016
JULY 6:
KCHS: 79/1990
KCXM: 82/2024
KSAV: 78/2024
JULY 7:
KCHS: 80/2017
KCXM: 82/2022
KSAV: 80/1883
JULY 8:
KCXM: 83/2016
KSAV: 80/1990
JULY 9:
KCHS: 80/1998
KSAV: 80/1883
JULY 10:
KCHS: 81/1986
KCXM: 82/1986
CHS WATCHES/WARNINGS/ADVISORIES
GA...NONE.
SC...NONE.
MARINE...NONE.
BRS/SST
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