385
FNUS72 KFFC 031459
FWSFFC
SPOT FORECAST FOR JULY 4TH FIREWORKS...ALPHARETTA FIRE DEPARTMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1059 AM EDT FRI JUL 3 2026
FORECAST IS BASED ON FORECAST START TIME OF 1800 EDT ON JULY 03.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
..HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT SATURDAY
DISCUSSION
GOOD MORNING, HERE IS YOUR FORECAST FOCUSING ON IMPACTS THIS
EVENING THROUGH THE NIGHT OF INDEPENDENCE DAY. THE MAIN CONCERN
THROUGH THE PERIOD WILL BE CONTINUED HEAT RISK ACROSS THE AREA. A
HEAT ADVISORY IS IN EFFECT THROUGH 8PM SATURDAY, INCLUDING
OVERNIGHT. MAX HEAT INDICES TODAY WILL BE BETWEEN 103 AND 107 WITH
LOCALLY HIGHER VALUES DEPENDENT ON CONCRETE/ASPHALT COVERAGE.
TIMING OF MAXIMUM HEAT RISK WILL BE AROUND 4PM THIS AFTERNOON,
WITH A SIMILAR TIMING FOR TOMORROW. TOMORROW'S MAXIMUM HEAT INDEX
WILL REACH BETWEEN 103 AND 106. CONDITIONS WILL REMAIN HOT
OVERNIGHT AS WELL. MINIMUM HEAT INDEX VALUES WILL ONLY DROP TO
AROUND 80 DEGREES AND WILL LEAD TO AN ACCUMULATED HEAT RISK.
ISOLATED TO SCATTERED THUNDERSTORM CHANCES ARE GREATEST THIS
AFTERNOON, PEAKING AROUND 30% AT 5PM AND DECREASING THROUGH THE
EVENING HOURS. STORM COVERAGE WILL BE SPOTTY AND ANY THUNDERSTORM
IS UNLIKELY TO LAST MUCH MORE THAN 1 HOUR. THE MAIN HAZARD WITH
ANY THUNDERSTORM WILL BE LIGHTNING, THOUGH BRIEF LOCALLY GUSTY
WINDS UP TO 40-50MPH MAY BE POSSIBLE. THUNDERSTORM CHANCES FOR
TOMORROW ARE LOWER, WITH MAXIMUM CHANCES OF 10-15% IN THE
AFTERNOON.
WINDS EACH DAY WILL BE LIGHT AND VARIABLE, GENERALLY LESS THAN 5
MPH. THIS MAY MAKE CONDITIONS FEEL HOTTER THAN USUAL AND MAY
REDUCE SWEAT EFFICIENCY. LOW WINDS MAY ALSO CAUSE ISSUES WITH
SMOKE DISBURSAL. SIGNIFICANT FIREWORK SMOKE/HAZE WILL BE SLOW TO
DISPERSE AND MAY SETTLE INTO LOW LYING AREAS THROUGH THE
FOLLOWING EARLY MORNING. THE GOOD NEWS IS THAT RH VALUES SHOULD
REMAIN BELOW 90 PERCENT, EVEN OVERNIGHT. THIS SHOULD LIMIT FOG
FORMATION ON TOP OF HAZE, EXCEPT FOR LOCALIZED LOW LYING AND WET
AREAS.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING.
CHANCE OF PCPN......20 PERCENT.
MIN TEMPERATURE.....AROUND 76.
MAX HUMIDITY........85 PERCENT.
HEAT INDEX..........N/A.
SURFACE WINDS (MPH).LIGHT WINDS.
RAINFALL AMOUNT.....0.03 INCHES.
CEILING (KFT).......5.0 INCREASING TO 25 IN THE LATE EVENING AND
OVERNIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........26 25 29 30 31 20 18 21 13 10 10 10
WEATHER COV.....SCH
WEATHER TYPE....RW
TSTM COV........SCH
CHC OF PCPN (%).20 10 10 10 0 0 0 0 0 0 0 0
TEMP............93 90 87 84 82 81 80 79 78 77 76 76
RH..............50 56 61 68 73 76 78 80 81 83 84 85
HEAT INDEX (F)..100 97 94 90 87 85 83 79 78 77 76 76
SURFACE WND DIR.S S W W NW NW N N N N N N
SURFACE WND SPD.3 3 3 1 1 1 0 0 0 0 0 1
SURFACE WND GST.8 8 7 5 5 5 5 5 3 3 3 5
CEILING (KFT)...5.0 5.0 5.0 25 25 25 25 25 25 25 25 25
INDEPENDENCE DAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....AROUND 97.
MIN HUMIDITY........41 PERCENT.
HEAT INDEX..........85 INCREASING TO 100 IN THE LATE MORNING AND
EARLY AFTERNOON, THEN INCREASING TO 102 LATE IN
THE AFTERNOON.
SURFACE WINDS (MPH).LIGHT WINDS.
RAINFALL AMOUNT.....0.00 INCHES.
CEILING (KFT).......25 DECREASING TO 5.0 EARLY IN THE AFTERNOON,
THEN INCREASING TO 6.0 LATE IN THE AFTERNOON.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........12 13 10 10 4 10 19 31 28 33 35 36
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 10 10 10 10
TEMP............76 76 77 81 86 89 93 93 95 96 95 95
RH..............85 85 85 76 63 57 50 47 43 41 42 43
HEAT INDEX (F)..76 76 77 85 92 96 99 99 100 102 100 99
SURFACE WND DIR.N N N N N NW W W W W W W
SURFACE WND SPD.1 1 0 0 0 1 2 2 3 2 2 2
SURFACE WND GST.3 3 3 3 3 5 5 6 7 6 7 7
CEILING (KFT)...25 25 25 25 25 25 5.0 5.0 6.0 6.0 6.0 6.0
SATURDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
CHANCE OF PCPN......10 PERCENT.
MIN TEMPERATURE.....AROUND 76.
MAX HUMIDITY........84 PERCENT.
HEAT INDEX..........N/A.
SURFACE WINDS (MPH).LIGHT WINDS.
RAINFALL AMOUNT.....0.00 INCHES.
CEILING (KFT).......6.0 INCREASING TO 25 IN THE LATE EVENING AND
OVERNIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........35 35 32 43 33 23 22 20 19 20 20 21
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 10 10 10
TEMP............94 91 89 85 83 81 80 79 78 77 77 76
RH..............44 48 54 62 68 70 74 76 78 80 81 81
HEAT INDEX (F)..99 97 94 90 87 85 83 79 78 77 77 76
SURFACE WND DIR.W W W W W W W W W W NW NW
SURFACE WND SPD.3 3 2 1 1 2 2 1 1 1 1 1
SURFACE WND GST.7 7 7 5 5 6 6 6 6 6 5 5
CEILING (KFT)...6.0 6.0 6.0 25 25 25 25 25
FORECASTER...SMARLOW
REQUESTED BY...ALBERT KONG
TYPE OF REQUEST...OTHER
.TAG 2616688.0/FFC
.DELDT 07/03/26
.FORMATTERVERSION 2.0.0
.EMAIL AKONG@ALPHARETTA.GA.US
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