629
FNUS71 KBOX 041936
FWSBOX
SPOT FORECAST FOR FALMOUTH FIREWORKS...MASSACHUSETTS DFS
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
336 PM EDT SAT JUL 4 2026
FORECAST IS BASED ON FORECAST START TIME OF 1600 EDT ON JULY 04.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL
WEATHER SERVICE.
DISCUSSION
DANGEROUS HEAT AND HUMIDITY CONTINUE TODAY, WITH THIS AFTERNOON'S
HIGH TEMPERATURE AND HEAT INDEX BOTH HOVERING IN THE LOW-TO-MID
90S. FORECAST SHOULD BE DRY FOR THE MAJORITY OF THE DAY, BUT
SHOWERS AND THUNDERSTORMS WILL THREATEN LATER THIS AFTERNOON AND
THIS EVENING. WHILE NOT EVERONE WILL SEE A THUNDERSTORM, THOSE
THAT DO MAY CONTAIN FREQUENT LIGHTNING AND GUSTY WINDS. UNFORTUNATELY
IT IS NOT POSSIBLE TO NAIL DOWN PRECISELY WHERE THESE SHOWERS AND
THUNDERSTORMS WILL POP UP IN SITUATIONS LIKE THIS. THE WINDOW OF
BEST CHANCE WILL BE GENERALLY 5PM TO MIDNIGHT.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF RAIN......29 PERCENT.
CHANCE OF THUNDER...15 PERCENT.
MAX TEMPERATURE.....AROUND 85.
MIN HUMIDITY........67 PERCENT.
MAX APPARENT TEMP...90.
EYE LEVEL WINDS.....SOUTHWEST WINDS AROUND 8 MPH.
SURFACE WINDS (MPH).SOUTHWEST WINDS AROUND 13 MPH.
WIND (20 FT)........WEST WINDS AROUND 13 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS LATE IN THE
AFTERNOON.
RAINFALL AMOUNT.....0.07 INCHES.
CEILING (KFT).......16.
VISIBILITY..........9.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST 14 TO 16 MPH.
SMOKE DISPERSAL.....POOR (6600 KNOT-FT).
LVORI...............4.
ADI.................15 TO 18.
TIME (EDT) 4PM 5PM
SKY (%).........38 38
WEATHER COV.....SCH SCH
WEATHER TYPE....RW RW
TSTM COV........ SCH
CHC OF PCPN (%).10 10
CHC OF RAIN (%).20 30
CHC OF THDR (%).10 20
TEMP............84 82
RH..............70 74
HEAT INDEX (F)..90 87
20 FT WIND DIR..SW W
20 FT WIND SPD..13 13
20 FT WIND GUST.20 18
EYE LVL WND DIR.SW W
EYE LVL WND SPD.8 8
EYE LVL WND GST.12 11
SURFACE WND DIR.SW W
SURFACE WND SPD.13 13
SURFACE WND GST.20 18
MIX HGT (KFT)...0.5 0.5
TRANSP WIND DIR.W W
TRANSP WIND SPD.16 14
LVORI...........3 4
ADI.............18 15
VRATE KT-FT/1K..7 7
VENTRATE CAT....PR PR
CEILING (KFT)...16 16
VISIBILITY (SM).9 9
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
SLIGHT CHANCE OF THUNDERSTORMS IN THE EVENING.
SLIGHT CHANCE OF SHOWERS EARLY IN THE EVENING,
THEN CHANCE OF SHOWERS.
CHANCE OF PCPN......60 PERCENT.
CHANCE OF PCPN......60 PERCENT.
CHANCE OF RAIN......44 PERCENT.
CHANCE OF THUNDER...23 PERCENT.
MIN TEMPERATURE.....AROUND 70.
MAX HUMIDITY........85 PERCENT.
MAX APPARENT TEMP...87.
EYE LEVEL WINDS.....WEST WINDS UP TO 7 MPH SHIFTING TO THE NORTH
AROUND 3 MPH EARLY IN THE MORNING.
SURFACE WINDS (MPH).WEST WINDS AROUND 12 MPH SHIFTING TO THE NORTH
AROUND 5 MPH EARLY IN THE MORNING.
WIND (20 FT)........WEST WINDS AROUND 12 MPH SHIFTING TO THE NORTH
AROUND 5 MPH EARLY IN THE MORNING. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN
THE EVENING.
RAINFALL AMOUNT.....0.20 INCHES.
CEILING (KFT).......16 DECREASING TO 11 LATE IN THE EVENING, THEN
DECREASING TO 8.4 DECREASING TO 7.3 DECREASING
TO 5.3 INCREASING TO 7.2 EARLY IN THE MORNING
DECREASING TO 3.8.
VISIBILITY..........9 DECREASING TO 5, THEN INCREASING TO 9 AFTER
MIDNIGHT.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....WEST 8 TO 13 MPH SHIFTING TO THE NORTHEAST
AROUND 9 MPH EARLY IN THE MORNING.
SMOKE DISPERSAL.....POOR (3200 KNOT-FT).
LVORI...............4.
ADI.................5 TO 14.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........35 50 55 65 69 71 69 74 67 81 80 72
WEATHER COV.....SCH CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW
TSTM COV........SCH SCH SCH SCH SCH
CHC OF PCPN (%).20 20 20 30 40 60 40 30 10 10 20 20
CHC OF RAIN (%).40 30 20 30 30 20 30 40 40 20 20 30
CHC OF THDR (%).20 20 20 20 20 10 10 10 10 10 10 10
TEMP............82 81 79 76 76 75 75 74 73 73 72 72
RH..............72 74 79 85 85 84 84 84 81 81 81 81
HEAT INDEX (F)..87 85 79 76 76 75 75 74 73 73 72 72
20 FT WIND DIR..W W W W W W NW NW NW N N N
20 FT WIND SPD..12 9 8 7 7 6 6 6 6 6 5 5
20 FT WIND GUST.16 14 12 10 10 10 9 9 9 9 9 8
EYE LVL WND DIR.W W W W W W NW NW NW N N N
EYE LVL WND SPD.7 5 5 4 4 4 4 4 4 4 3 3
EYE LVL WND GST.10 8 7 6 6 6 5 5 5 5 5 5
SURFACE WND DIR.W W W W W W NW NW NW N N N
SURFACE WND SPD.12 9 8 7 7 6 6 6 6 6 5 5
SURFACE WND GST.16 14 12 10 10 10 9 9 9 9 9 8
MIX HGT (KFT)...0.5 0.5 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.6 0.5 0.6
TRANSP WIND DIR.W W W W W NW NW NW N N NE N
TRANSP WIND SPD.13 12 12 13 10 10 8 9 9 7 9 9
LVORI...........3 4 4 4 5 5 5 5 4 5 4 4
ADI.............14 12 10 8 7 7 5 6 6 5 6 10
VRATE KT-FT/1K..6 5 4 5 4 4 3 4 4 4 4 5
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
CEILING (KFT)...16 16 17 11 8.4 7.3 5.5 5.3 6.1 7.2 7.2 3.8
VISIBILITY (SM).9 9 9 9 9 5 9 9 9 9 9 9
SUNDAY
SKY/WEATHER.........PARTLY SUNNY THEN BECOMING MOSTLY SUNNY.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF RAIN......17 PERCENT.
CHANCE OF THUNDER...7 PERCENT.
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........69 PERCENT.
MAX APPARENT TEMP...76.
EYE LEVEL WINDS.....NORTHEAST WINDS UP TO 5 MPH SHIFTING TO THE
EAST AROUND 5 MPH IN THE AFTERNOON.
SURFACE WINDS (MPH).NORTHEAST WINDS AROUND 5 MPH SHIFTING TO THE
EAST 8 TO 9 MPH IN THE AFTERNOON.
WIND (20 FT)........NORTHEAST WINDS AROUND 5 MPH SHIFTING TO THE
EAST 8 TO 9 MPH IN THE AFTERNOON.
RAINFALL AMOUNT.....0.02 INCHES.
CEILING (KFT).......3.7 INCREASING TO 10.
VISIBILITY..........9.
MIXING HEIGHT.......1700 FT AGL.
TRANSPORT WINDS.....EAST 8 TO 9 MPH.
SMOKE DISPERSAL.....POOR (4400 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (13700 KNOT-FT) IN THE
AFTERNOON.
LVORI...............4.
ADI.................9 TO 20.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........74 60 70 56 59 42 24 25 26 40 21 44
WEATHER COV.....SCH SCH
WEATHER TYPE....RW RW
TSTM COV........
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 10 10 10
CHC OF RAIN (%).20 20 20 0 0 10 0 0 10 0 0 10
CHC OF THDR (%).10 10 0 0 0 0 0 0 10 10 10 10
TEMP............72 72 74 74 75 76 76 76 76 75 75 74
RH..............79 81 76 74 71 69 71 71 71 71 71 74
HEAT INDEX (F)..72 72 74 74 75 76 76 76 76 75 75 74
20 FT WIND DIR..NE NE NE NE NE E E E SE SE SE E
20 FT WIND SPD..5 5 6 6 7 8 8 8 9 8 8 8
20 FT WIND GUST.8 8 9 10 10 10 12 12 13 12 13 12
EYE LVL WND DIR.NE NE NE NE NE E E E SE SE SE E
EYE LVL WND SPD.3 3 4 4 4 5 5 5 5 5 5 5
EYE LVL WND GST.5 5 5 6 6 6 7 7 8 7 8 7
SURFACE WND DIR.NE NE NE NE NE E E E SE SE SE E
SURFACE WND SPD.5 5 6 6 7 8 8 8 9 8 8 8
SURFACE WND GST.8 8 9 10 10 10 12 12 13 12 13 12
MIX HGT (KFT)...0.6 0.9 1.3 1.4 1.5 1.7 1.6 1.5 1.4 1.3 1.2 1.1
TRANSP WIND DIR.NE E E E E E E E E E E E
TRANSP WIND SPD.8 9 8 9 9 9 9 9 9 9 9 9
LVORI...........4 4 4 4 3 3 3 3 3 3 3 3
ADI.............9 11 12 17 15 20 19 17 17 15 14 13
VRATE KT-FT/1K..4 8 9 12 12 14 13 12 11 10 9 9
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
CEILING (KFT)...4.4 3.7 5.4 5.3 6.4 6.9 8.1 9.2 10 11 11 11
VISIBILITY (SM).9 9 9 9 9 9 9 9 9 9 9 9
FORECASTER...BRW
REQUESTED BY...JEFFREY OSSWALD
TYPE OF REQUEST...OTHER
.TAG 2616758.0/BOX
.DELDT 07/04/26
.FORMATTERVERSION 2.0.0
.EMAIL DFSISU1@GMAIL.COM
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