405
FNUS71 KBOX 181352
FWSBOX

Spot Forecast for FV Triple Threat Sinking...NOAA
National Weather Service Boston/Norton MA
952 AM EDT Wed Jun 18 2025

Forecast is based on forecast start time of 1000 EDT on June 18.
If conditions become unrepresentative, contact the National
Weather Service.

.DISCUSSION...
Difficult navigation today and tonight due to marine fog with
visibilities less than one mile. Southerly winds are 8 to 12
knots today and tonight. Wind direction becomes southwest for
Thursday with increasing wind speeds of 15 to 20 knots. Southeast
swell of 3 feet during the day, but becoming an east swell
overnight into Thursday.

.TODAY...

Sky/weather.........Cloudy. Patchy dense fog early in the morning,
                    then patchy fog through early afternoon.
Max temperature.....Around 61.
Surface winds (kts).Light winds becoming southeast around 6 knots
                    early in the morning, then shifting to the
                    south 6 to 9 knots through early afternoon.
Wind shift..........
Swell height........Southeast swell 3 feet.
Wave height.........3 feet.
Wave height.........3 feet.
Swell period........7 Seconds.
Wave period.........7 SECONDS.
Wind wave...........1 foot.
Visibility..........0.25 increasing to 0.89.

TIME (EDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........91  92  92  91  91  91  91  93
Weather cov.....PTY PTY PTY PTY PTY PTY PTY PTY
Weather type....FOG FOG FOG FOG FOG FOG FOG FOG
Tstm cov........
Temp............59  59  60  60  60  60  60  60
SFC wnd dir.....S   S   S   S   S   S   S   S
SFC wnd spd kts.7   7   8   7   8   8   8   9
SFC wnd gst.....11  11  11  13  13  13  11  12
Swell direction.SE  SE  SE  SE  SE  SE  SE  SE
Swell hgt (ft)..3   3   3   3   3   3   3   3
Swell period (s)7   7   7   7   7   7   7   7
Wave period (s).7   7   7   7   7   7   7   7
Wind wave (ft)..1   1   1   1   1   1   1   1
Wave height (ft)3   3   3   3   3   3   3   3
Visibility (sm)..50 .95 1.0 .89 .89 1.0 1.0 .95

.TONIGHT...

Sky/weather.........Cloudy. Patchy fog in the evening. Patchy fog
                    after midnight. Patchy fog early in the
                    morning. Slight chance of showers in the
                    evening. Chance of showers after midnight.
                    Slight chance of showers early in the morning.
Min temperature.....Around 59.
Surface winds (kts).South winds 8 to 11 knots.
Wind shift..........
Swell height........East swell 2 feet.
Wave height.........3 feet.
Wave height.........3 feet.
Swell period........7 Seconds.
Wave period.........7 SECONDS.
Wind wave...........2 feet.
Visibility..........0.50 increasing to 0.81, then decreasing to
                    0.50 early in the morning increasing to 1.00
                    early in the morning.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........91  91  92  94  93  92  92  95  95  94  92  93
Weather cov.....PTY SCH SCH SCH SCH SCH SCH CHC CHC SCH SCH SCH
Weather type....FOG RNF RNF RNF RNF RNF RNF RW  RW  RNF RNF RNF
Tstm cov........
Temp............61  61  61  60  61  61  61  61  61  61  61  61
SFC wnd dir.....S   S   S   S   S   S   S   S   S   S   S   S
SFC wnd spd kts.9   8   8   8   8   9   9   9   11  11  11  11
SFC wnd gst.....11  11  11  12  12  12  12  12  13  12  13  13
Swell direction.SE  SE  SE  SE  SE  SE  SE  SE  E   E   E   E
Swell hgt (ft)..3   3   3   3   2   2   2   2   2   2   2   2
Swell period (s)7   7   7   7   7   7   7   6   6   6   6   6
Wave period (s).7   7   7   7   7   7   7   6   6   6   6   6
Wind wave (ft)..1   1   1   1   2   2   2   2   2   2   2   2
Wave height (ft)3   3   3   3   3   3   3   3   3   3   3   3
Visibility (sm)..50 .50 .50 .50 .50 .50 .50 .81 .50 .50 .50 1.0

.JUNETEENTH...

Sky/weather.........Mostly cloudy then becoming mostly sunny.
                    Patchy fog in the morning.
Max temperature.....Around 65.
Surface winds (kts).Southwest winds 10 to 18 knots.
Wind shift..........
Swell height........East swell 2 feet.
Wave height.........4 feet.
Wave height.........4 feet.
Swell period........8 Seconds.
Wave period.........8 SECONDS.
Wind wave...........2 feet increasing to 3 feet in the afternoon.
Visibility..........1.00 increasing to 9.

TIME (EDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........93        80        61        37
Weather cov.....PATCHY    PATCHY
Weather type....FOG       FOG       NONE      NONE
Tstm cov........
Temp............61        61        62        63
SFC wind (kts)..S 11G13   SW 10G13  SW 12G16  SW 17G22
Swell hgt (ft)..E 2       E 2       E 2       E 2
Swell period (s)6         6         7         8
Wave period (s).6         6         7         8
Wind wave (ft)..2         2         2         3
Wave height (ft)3         3         3         4
Visibility (sm).1.0       4         9         9

$$
Forecaster...Dooley
Requested by...William Whitmore
Type of request...MARINE
.TAG 2516180.0/BOX
.DELDT 06/18/25
.FormatterVersion 2.0.0
.EMAIL william.whitmore@noaa.gov