440
FNUS72 KNHC 180908
FWSNHC

SPOT FORECAST FOR Coast Guard GI Forecast...USCG
NWS NATIONAL HURRICANE CENTER MIAMI FL
1000 EDT Sat Oct 18 2025

Forecast is based on forecast start time of 0600 EDT on October 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NWS
NATIONAL HURRICANE CENTER/TROPICAL ANALYSIS AND FORECAST
BRANCH AT (305)229-4425.

.DISCUSSION...Forecast discussion valid 12Z 10/18/25 - 12Z
10/19/25 Initial VFR conditions will transition to intermittent
MVFR conditions by the early afternoon as scattered showers and
isolated thunderstorms develop over the region. This activity
should weaken after sunset this evening with VFR conditions
persisting through the overnight hours. Surface winds will remain
easterly between 5 to 10 knots though brief gusty winds may
accompany isolated thunderstorm activity.

Matthew Town (MYIG 21.0N 73.7W):
12Z-18Z SCT025 WND E 5-10KT.
18Z-03Z BKN025 SHRA ISOL TSRA TOP FL450 WND E 5-10KT.
03Z-12Z SCT025 WND E 5-10kt.

 Latitude = 20.96
 Longitude = 73.69

.TODAY...

Sky/weather.........Sunny (5-15 percent).
Max temperature.....Around 84.
Surface winds (kts).East winds 6 to 8 knots.
Swell height........North swell 0 feet.
Wave height.........2 feet building to 3 feet late in the
                    afternoon.
Wave height.........2 feet building to 3 feet late in the
                    afternoon.
Wave period.........8 SECONDS.
Wave period.........8 SECONDS.
Wind wave...........2 feet.
Sea surface temp....86 Degrees Fahrenheit.

TIME (EDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........16        5         5         19
Temp............80        83        83        84
SFC wind (kts)..E 7G10    E 7G10    E 6G9     E 6G9
Swell hgt (ft)..N 0       N 0       N 0       N 1
Wave period (s).8         8         8         8
Wind wave (ft)..2         2         2         2
Wave height (ft)2         2         2         2
SST (F).........86        86        86        86

.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent). Scattered showers
                    and isolated thunderstorms through early in the
                    evening.
Min temperature.....Around 81.
Surface winds (kts).East winds 8 to 10 knots.
Swell height........North swell 1 feet.
Wave height.........3 feet.
Wave height.........3 feet.
Wave period.........8 SECONDS.
Wave period.........8 SECONDS.
Wind wave...........2 feet.
Sea surface temp....86 Degrees Fahrenheit.

TIME (EDT)      6 PM      9 PM      MIDNGT    3 AM
Sky (%).........19        14        14        19
Temp............84        81        81        81
SFC wind (kts)..E 8G10    E 9G11    E 9G11    E 10G12
Swell hgt (ft)..N 1       N 1       N 1       N 1
Wave period (s).8         6         6         5
Wind wave (ft)..2         2         2         2
Wave height (ft)3         3         3         3
SST (F).........86        86        86        86

.SUNDAY...

Sky/weather.........Sunny (15-25 percent) then becoming cloudy
                    (85-95 percent). Scattered showers and isolated
                    thunderstorms.
Max temperature.....Around 83.
Surface winds (kts).East winds 6 to 10 knots.
Swell height........North swell 1 feet.
Wave height.........4 feet.
Wave height.........4 feet.
Wave period.........5 SECONDS increasing to 12 SECONDS late in the
                    afternoon.
Wave period.........5 SECONDS increasing to 12 SECONDS late in the
                    afternoon.
Wind wave...........2 feet.
Sea surface temp....86 Degrees Fahrenheit.

TIME (EDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........19        81        81        100
Temp............81        81        81        83
SFC wind (kts)..E 10G12   E 10G12   E 9G12    E 8G10
Swell hgt (ft)..N 1       N 1       N 1       N 1
Wave period (s).5         5         5         12
Wind wave (ft)..2         2         2         2
Wave height (ft)3         3         4         4
SST (F).........86        86        86        86

$$
Forecaster...AL/JW
Requested by...Air Station Miami
Type of request...MARINE
.TAG 2523592.3/NHC
.DELDT 10/18/25
.FormatterVersion 2.0.0
.EMAIL landon.w.klopfenstein@uscg.mil,sarah.r.wright@uscg.mil