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National Weather Service Marine Forecast FZNT23 KNHC

FZNT23 KNHC 212046
OFFNT3

Offshore Waters Forecast for the SW and Tropical N Atlantic and
Caribbean Sea
NWS National Hurricane Center Miami, FL
446 PM EDT Thu Sep 21 2017

Offshore Waters Forecast for the Tropical N Atlantic from 07N to
22N between 55W and 64W, the SW N Atlantic S of 31N W of 65W
including Bahamas, and the Caribbean Sea.

Seas given as significant wave height, which is the average
height of the highest 1/3 of the waves. Individual waves may be
more than twice the significant wave height.

AMZ001-220900-
Synopsis for Caribbean Sea and Tropical N Atlantic from 07N to
19N between 55W and 64W
446 PM EDT Thu Sep 21 2017

SYNOPSIS
Hurricane Maria is centered at 20.8N 69.8W 960 mb at
5 PM EDT moving NW or 315 degrees at 8 kt. Maximum sustained
winds are 105 kt with gusts to 130 kt. Maria is forecast to reach
near 21.6N 70.4W at 2 AM EDT FRI, weaken to 100 kt gusts to 120
kt near 23.0N 71.2W at 2 PM EDT Fri, near 24.5N 71.7W at 2 AM EDT
Sat, weaken to 95 kt gusts 115 kt near 26.1N 72.1W at 2 PM EDT
Sat, near 28.9N 72.1W at 2 PM Sun, then pass through 31.0N 71.0W
at 2 PM EDT Mon. Moderate to locally fresh trades will return
across the area by Sun evening. Strong nocturnal trades will
resume along the NW coast of Venezuela, along the NE coast of
Colombia and across the Gulf of Honduras on Mon evening.



AMZ011-220900-
Caribbean N of 18N W of 85W including Yucatan Basin-
446 PM EDT Thu Sep 21 2017

TONIGHT
NE to E winds 10 to 15 kt. Seas 3 ft.

FRI
NE to E winds 5 to 10 kt. Seas 3 ft in the morning,
subsiding to 2 ft or less.

FRI NIGHT
NE to E winds 10 to 15 kt. Seas 3 ft.

SAT
NE to E winds 5 to 10 kt. Seas 2 ft or less.

SAT NIGHT
NE to E winds 5 to 10 kt. Seas 2 ft or less.

SUN
E to SE winds 5 to 10 kt. Seas 2 ft or less.

SUN NIGHT
E winds 10 to 15 kt. Seas 2 ft or less, building to
3 ft late.

MON
E to SE winds 10 to 15 kt. Seas 3 to 4 ft.

MON NIGHT
E to SE winds 15 to 20 kt. Seas 3 ft In Yucatan
Channel, and 4 to 6 ft elsewhere.

TUE
E to SE winds 15 to 20 kt. Seas 6 ft.



AMZ013-220900-
Caribbean N of 18N between 76W and 85W including Cayman Basin-
446 PM EDT Thu Sep 21 2017

TONIGHT
NE winds 10 to 15 kt. Seas 3 ft.

FRI
NE winds 10 to 15 kt. Seas 3 ft.

FRI NIGHT
NE winds 5 to 10 kt. Seas 2 ft or less.

SAT
E winds 5 to 10 kt. Seas 2 ft or less.

SAT NIGHT
E to SE winds 5 to 10 kt. Seas 2 ft or less.

SUN
SE winds 5 to 10 kt. Seas 2 ft or less.

SUN NIGHT
E to SE winds 10 to 15 kt. Seas 2 ft or less.

MON
E to SE winds 10 to 15 kt. Seas 3 ft.

MON NIGHT
E to SE winds 15 to 20 kt. Seas 3 to 4 ft.

TUE
E to SE winds 15 to 20 kt. Seas 4 ft.



AMZ015-220900-
Caribbean Approaches to the Windward Passage-
446 PM EDT Thu Sep 21 2017

TONIGHT
N winds 10 to 15 kt. Seas 3 ft. Scattered showers and
isolated thunderstorms.

FRI
NW winds 5 to 10 kt. Seas 4 ft.

FRI NIGHT
SW to W winds 5 to 10 kt. Seas 3 ft.

SAT
S to SW winds 5 to 10 kt. Seas 3 ft.

SAT NIGHT
S to SW winds 5 to 10 kt. Seas 3 ft. Scattered
showers and isolated thunderstorms.

SUN
S winds 10 to 15 kt. Seas 2 ft or less, building to 3 ft
in the afternoon.

SUN NIGHT
SE to S winds 10 to 15 kt, shifting to E to SE
late. Seas 3 ft.

MON
E to SE winds 10 to 15 kt. Seas 4 ft.

MON NIGHT
E winds 10 to 15 kt. Seas 5 ft.

TUE
E to SE winds 10 to 15 kt. Seas 5 ft.



AMZ017-220900-
Gulf of Honduras-
446 PM EDT Thu Sep 21 2017

TONIGHT
NE to E winds 10 to 15 kt. Seas 3 ft.

FRI
E winds 10 to 15 kt. Seas 3 ft.

FRI NIGHT
NE to E winds 5 to 10 kt. Seas 2 ft or less,
building to 3 ft late.

SAT
E winds 5 to 10 kt. Seas 2 ft or less.

SAT NIGHT
NE to E winds 5 to 10 kt. Seas 2 ft or less.

SUN
E winds 5 to 10 kt. Seas 2 ft or less.

SUN NIGHT
NE to E winds 10 to 15 kt S of 17N W of 87W, and E
15 to 20 kt elsewhere. Seas 3 to 4 ft.

MON
E to SE winds 10 to 15 kt S of 17N W of 87W, and E to SE
15 to 20 kt elsewhere. Seas 4 ft.

MON NIGHT
E winds 20 to 25 kt. Seas 5 to 7 ft.

TUE
E to SE winds 20 to 25 kt. Seas 7 ft.



AMZ019-220900-
Caribbean from 15N to 18N between 80W and 85W-
446 PM EDT Thu Sep 21 2017

TONIGHT
N to NE winds 10 to 15 kt. Seas 4 ft.

FRI
N to NE winds 5 to 10 kt. Seas 3 ft.

FRI NIGHT
NE winds 5 to 10 kt. Seas 2 ft or less.

SAT
SE winds 5 to 10 kt. Seas 2 ft or less.

SAT NIGHT
E to SE winds 5 to 10 kt. Seas 2 ft or less.

SUN
SE winds 5 to 10 kt. Seas 2 ft or less.

SUN NIGHT
E to SE winds 10 to 15 kt. Seas 2 ft or less,
building to 3 ft late.

MON
E to SE winds 10 to 15 kt. Seas 3 ft.

MON NIGHT
E to SE winds 15 to 20 kt. Seas 4 ft.

TUE
E to SE winds 15 to 20 kt. Seas 4 ft.



AMZ021-220900-
Caribbean from 15N to 18N between 72W and 80W-
446 PM EDT Thu Sep 21 2017

TONIGHT
NW winds 10 to 15 kt. Seas 4 to 5 ft.

FRI
NW winds 5 to 10 kt, shifting to SW to W in the
afternoon. Seas 3 ft.

FRI NIGHT
SW winds 5 to 10 kt. Seas 3 ft.

SAT
S winds 5 to 10 kt. Seas 3 ft.

SAT NIGHT
SE winds 5 to 10 kt. Seas 3 ft.

SUN
E to SE winds 10 to 15 kt. Seas 4 ft.

SUN NIGHT
E winds 15 to 20 kt. Seas 4 to 5 ft.

MON
E to SE winds 15 to 20 kt. Seas 6 ft.

MON NIGHT
E to SE winds 15 to 20 kt. Seas 6 ft.

TUE
E to SE winds 15 to 20 kt. Seas 7 ft.



AMZ023-220900-
Caribbean N of 15N between 64W and 72W-
446 PM EDT Thu Sep 21 2017

TONIGHT
S to SW winds 20 to 25 kt. Seas 7 to 8 ft.

FRI
S winds 15 to 20 kt. Seas 6 ft. Scattered showers and
isolated thunderstorms.

FRI NIGHT
SE to S winds 10 to 15 kt. Seas 5 to 6 ft.
Scattered showers and isolated thunderstorms.

SAT
SE to S winds 15 to 20 kt. Seas 5 to 6 ft. Scattered
showers and isolated thunderstorms.

SAT NIGHT
SE winds 15 to 20 kt. Seas 6 ft. Scattered showers
and isolated thunderstorms.

SUN
SE winds 15 to 20 kt. Seas 6 ft.

SUN NIGHT
E to SE winds 15 to 20 kt. Seas 6 ft.

MON
E to SE winds 15 to 20 kt. Seas 6 ft.

MON NIGHT
E to SE winds 15 to 20 kt. Seas 6 ft.

TUE
E to SE winds 15 to 20 kt. Seas 6 ft.



AMZ025-220900-
Offshore Waters Leeward Islands-
446 PM EDT Thu Sep 21 2017

TONIGHT
E to SE winds 10 to 15 kt. Seas 7 ft.

FRI
E to SE winds 15 to 20 kt. Seas 7 ft.

FRI NIGHT
E to SE winds 10 to 15 kt. Seas 7 ft.

SAT
E to SE winds 10 to 15 kt. Seas 7 ft.

SAT NIGHT
E to SE winds 10 to 15 kt. Seas 7 ft.

SUN
E to SE winds 10 to 15 kt. Seas 7 ft.

SUN NIGHT
E to SE winds 10 to 15 kt. Seas 7 ft.

MON
E to SE winds 10 to 15 kt. Seas 8 ft.

MON NIGHT
E to SE winds 10 to 15 kt. Seas 7 to 8 ft.

TUE
E winds 15 to 20 kt. Seas 7 ft.



AMZ027-220900-
Tropical N Atlantic from 15N to 19N between 55W and 60W-
446 PM EDT Thu Sep 21 2017

TONIGHT
E to SE winds 10 to 15 kt. Seas 6 ft.

FRI
E to SE winds 10 to 15 kt. Seas 6 to 7 ft.

FRI NIGHT
E to SE winds 10 to 15 kt. Seas 7 ft.

SAT
E to SE winds 10 to 15 kt. Seas 7 ft.

SAT NIGHT
E to SE winds 10 to 15 kt. Seas 7 ft.

SUN
E to SE winds 10 to 15 kt. Seas 7 ft.

SUN NIGHT
E to SE winds 10 to 15 kt. Seas 7 ft.

MON
E winds 15 to 20 kt. Seas 8 ft.

MON NIGHT
E winds 15 to 20 kt. Seas 8 ft.

TUE
E winds 15 to 20 kt. Seas 8 ft.



AMZ029-220900-
W Central Caribbean from 11N to 15N W of 80W-
446 PM EDT Thu Sep 21 2017

TONIGHT
N to NE winds 5 to 10 kt. Seas 5 to 6 ft.

FRI
N to NE winds 5 kt, shifting to NW in the afternoon. Seas
4 to 5 ft.

FRI NIGHT
N winds 5 to 10 kt, shifting to E late.
Seas 3 ft.

SAT
SE to S winds 5 kt. Seas 2 ft or less.

SAT NIGHT
SE winds 5 to 10 kt. Seas 2 ft or less.

SUN
E to SE winds 5 to 10 kt. Seas 2 ft or less.

SUN NIGHT
E to SE winds 5 to 10 kt. Seas 3 ft.

MON
E to SE winds 10 to 15 kt. Seas 3 ft.

MON NIGHT
E to SE winds 10 to 15 kt. Seas 3 to 4 ft.

TUE
SE to S winds 10 to 15 kt. Seas 4 ft.



AMZ031-220900-
Caribbean from 11N to 15N between 72W and 80W including Colombia
Basin-
446 PM EDT Thu Sep 21 2017

TONIGHT
NW winds 5 to 10 kt. Seas 5 to 6 ft.

FRI
SW to W winds 5 to 10 kt. Seas 3 to 4 ft.

FRI NIGHT
W to NW winds 5 to 10 kt, shifting to N late. Seas 3 ft.

SAT
E to SE winds 5 to 10 kt. Seas 2 ft or less, building to
3 ft in the afternoon.

SAT NIGHT
E winds 5 to 10 kt. Seas 3 ft.

SUN
NE to E winds 10 to 15 kt Within 90 nm of coast of
Colombia, and E 10 to 15 kt elsewhere. Seas 3 to 4 ft.

SUN NIGHT
E winds 15 to 20 kt. Seas 5 ft.

MON
E to SE winds 15 to 20 kt. Seas 6 to 7 ft.

MON NIGHT
NE to E winds 15 to 20 kt Within 90 nm of coast of
Colombia, and E to SE 20 to 25 kt elsewhere. Seas 7 ft.

TUE
E winds 15 to 20 kt Within 90 nm of coast of Colombia,
and E to SE 20 to 25 kt elsewhere. Seas 7 ft.



AMZ033-220900-
Caribbean S of 15N between 64W and 72W including Venezuela Basin-
446 PM EDT Thu Sep 21 2017

TONIGHT
N to NE winds 5 to 10 kt Gulf of Venezuela, and SE
15 to 20 kt elsewhere. Seas 7 to 8 ft.

FRI
N winds 5 kt Gulf of Venezuela, and SE 15 to 20 kt
elsewhere. Seas 7 ft. Scattered showers and isolated thunderstorms.

FRI NIGHT
N to NE winds 5 to 10 kt Gulf of Venezuela, and E
to SE 15 to 20 kt elsewhere. Seas 5 to 6 ft.

SAT
N winds 5 kt Gulf of Venezuela, and E to SE 15 to 20 kt
elsewhere. Seas 6 ft. Scattered showers and isolated thunderstorms.

SAT NIGHT
NE winds 5 to 10 kt Gulf of Venezuela, and E to SE
15 to 20 kt elsewhere. Seas 6 ft.

SUN
NE to E winds 10 to 15 kt Gulf of Venezuela, and E to SE
15 to 20 kt elsewhere. Seas 6 ft.

SUN NIGHT
NE to E winds 15 to 20 kt Gulf of Venezuela, and E
15 to 20 kt elsewhere. Seas 6 to 7 ft.

MON
E to SE winds 15 to 20 kt. Seas 7 ft.

MON NIGHT
NE to E winds 15 to 20 kt Gulf of Venezuela, and E
20 to 25 kt elsewhere. Seas 7 to 8 ft.

TUE
NE to E winds 15 to 20 kt Gulf of Venezuela, and E 20 to
25 kt elsewhere. Seas 8 ft.



AMZ035-220900-
Offshore Waters Windward Islands including Trindad and Tobago-
446 PM EDT Thu Sep 21 2017

TONIGHT
E to SE winds 15 to 20 kt. Seas 6 to 7 ft.

FRI
E to SE winds 15 to 20 kt. Seas 6 ft.

FRI NIGHT
E to SE winds 15 to 20 kt. Seas 6 ft.

SAT
E to SE winds 15 to 20 kt. Seas 6 ft.

SAT NIGHT
E winds 15 to 20 kt. Seas 6 ft.

SUN
E winds 15 to 20 kt. Seas 5 to 6 ft.

SUN NIGHT
E winds 15 to 20 kt. Seas 6 ft.

MON
E winds 15 to 20 kt. Seas 6 ft.

MON NIGHT
E winds 15 to 20 kt. Seas 7 ft.

TUE
E winds 15 to 20 kt. Seas 7 ft.



AMZ037-220900-
Tropical N Atlantic from 07N to 15N between 55W and 60W-
446 PM EDT Thu Sep 21 2017

TONIGHT
E to SE winds 15 to 20 kt. Seas 6 ft.

FRI
E to SE winds 15 to 20 kt. Seas 6 ft.

FRI NIGHT
E to SE winds 15 to 20 kt. Seas 6 ft.

SAT
E to SE winds 15 to 20 kt. Seas 6 ft.

SAT NIGHT
E winds 15 to 20 kt. Seas 7 ft. Scattered showers
and isolated thunderstorms.

SUN
E winds 15 to 20 kt. Seas 7 ft.

SUN NIGHT
E winds 15 to 20 kt. Seas 7 to 8 ft.

MON
E winds 15 to 20 kt. Seas 8 ft.

MON NIGHT
NE to E winds 15 to 20 kt. Seas 8 ft.

TUE
E winds 15 to 20 kt. Seas 8 ft.



AMZ039-220900-
SW Caribbean S of 11N including Approaches to Panama Canal-
446 PM EDT Thu Sep 21 2017

TONIGHT
N winds 5 to 10 kt. Seas 5 ft.

FRI
SW winds 5 to 10 kt. Seas 4 to 5 ft. Scattered showers
and isolated thunderstorms.

FRI NIGHT
N winds 5 to 10 kt, shifting to E late.
Seas 3 to 4 ft.

SAT
SE winds 5 to 10 kt. Seas 3 ft in the morning, subsiding
to 2 ft or less. Scattered showers and isolated thunderstorms.

SAT NIGHT
E winds 5 to 10 kt. Seas 2 ft or less.

SUN
SE winds 5 to 10 kt. Seas 2 ft or less.

SUN NIGHT
SE to S winds 5 to 10 kt. Seas 2 ft or less.

MON
S to SW winds 5 to 10 kt. Seas 2 ft or less.

MON NIGHT
SW winds 5 to 10 kt. Seas 2 ft or less.

TUE
SW to W winds 5 to 10 kt. Seas 3 ft.



AMZ101-220900-
Synopsis for the SW N Atlantic including the Bahamas
446 PM EDT Thu Sep 21 2017

SYNOPSIS
Hurricane Maria is centered at 20.8N 69.8W 960 mb at
5 PM EDT moving NW or 315 degrees at 8 kt. Maximum sustained
winds are 105 kt with gusts to 130 kt. Maria is forecast to reach
near 21.6N 70.4W at 2 AM EDT FRI, weaken to 100 kt gusts to 120
kt near 23.0N 71.2W at 2 PM EDT Fri, near 24.5N 71.7W at 2 AM EDT
Sat, weaken to 95 kt gusts 115 kt near 26.1N 72.1W at 2 PM EDT
Sat, near 28.9N 72.1W at 2 PM Sun, then pass through 31.0N 71.0W
at 2 PM EDT Mon.



AMZ111-220900-
Atlantic from 27N to 31N W of 77W-
446 PM EDT Thu Sep 21 2017

TONIGHT
NE to E winds 10 to 15 kt. Seas 5 to 7 ft N of 29N W
of 79W, and 8 to 9 ft elsewhere.

FRI
NE to E winds 10 to 15 kt. Seas 10 to 11 ft. Scattered
showers and isolated thunderstorms.

FRI NIGHT
NE to E winds 15 to 20 kt. Seas 13 to 14 ft.
Scattered showers and isolated thunderstorms.

SAT
NE winds 15 to 20 kt. Seas 15 to 16 ft. Scattered showers
and isolated thunderstorms.

SAT NIGHT
NE winds 15 to 20 kt. Seas 16 ft.

SUN
N to NE winds 15 to 20 kt. Seas 16 ft.

SUN NIGHT
N winds 15 to 20 kt. Seas 14 to 15 ft.

MON
NW to N winds 15 to 20 kt. Seas 12 to 13 ft.

MON NIGHT
N winds 10 to 15 kt N of 29N W of 79W, and NW to N
15 to 20 kt elsewhere. Seas 9 to 11 ft.

TUE
NW winds 15 to 20 kt. Seas 9 to 10 ft.



AMZ113-220900-
Atlantic from 27N to 31N between 70W and 77W-
446 PM EDT Thu Sep 21 2017

TROPICAL STORM WARNING


TONIGHT
NE to E winds 10 to 15 kt. Seas 11 to 12 ft.
Scattered showers and isolated thunderstorms.

FRI
NE winds 10 to 15 kt. Seas 12 to 13 ft N of 29N, and
14 to 16 ft elsewhere.

FRI NIGHT
TROPICAL STORM CONDITIONS POSSIBLE. N of 29N, NE
to E winds 15 to 20 kt. Elsewhere, NE to E winds 15 to 20 kt,
increasing to 25 to 30 kt late. Seas 14 to 16 ft N of
29N, and 17 to 20 ft elsewhere.

SAT
TROPICAL STORM CONDITIONS EXPECTED. N of 29N, NE to E
winds 20 to 25 kt. Elsewhere, NE to E winds 40 to 45 kt,
increasing to 50 to 60 kt in the afternoon. Seas 17 to 19 ft N
of 29N, and 24 to 30 ft elsewhere. Scattered showers and
isolated thunderstorms. VSBY 1 NM or less.

SAT NIGHT
HURRICANE CONDITIONS POSSIBLE. N of 29N, NE to E
winds 30 to 35 kt, increasing to 40 to 45 kt late.
Elsewhere, NE winds 75 to 85 kt. Seas 23 to 27 ft N of 29N, and
39 to 44 ft elsewhere. Scattered showers and isolated thunderstorms.
VSBY 1 NM or less.

SUN
HURRICANE CONDITIONS POSSIBLE.

SUN NIGHT
HURRICANE CONDITIONS POSSIBLE.

MON
HURRICANE CONDITIONS POSSIBLE.

MON NIGHT
HURRICANE CONDITIONS POSSIBLE.

TUE
N of 29N, W winds 35 to 40 kt, diminishing to 25 to 30 kt
in the afternoon. Elsewhere, SW to W winds 15 to 20 kt. Seas
16 ft N of 29N, and 10 to 11 ft elsewhere.



AMZ115-220900-
Atlantic from 27N to 31N between 65W and 70W-
446 PM EDT Thu Sep 21 2017

TROPICAL STORM WARNING


TONIGHT
E to SE winds 10 to 15 kt. Seas 10 to 11 ft.

FRI
E to SE winds 10 to 15 kt. Seas 12 to 13 ft.

FRI NIGHT
TROPICAL STORM CONDITIONS POSSIBLE. N of 29N, E to
SE winds 10 to 15 kt. Seas 12 to 13 ft. Elsewhere, E to SE winds
20 to 25 kt. Seas 15 ft.

SAT
TROPICAL STORM CONDITIONS POSSIBLE. N of 29N, E to SE
winds 15 to 20 kt. Seas 14 to 15 ft. Elsewhere, E to SE winds
30 to 35 kt. Seas 17 to 18 ft. Scattered showers and isolated
thunderstorms.

SAT NIGHT
HURRICANE CONDITIONS POSSIBLE. N of 29N, SE winds
25 to 30 kt. Seas 17 to 19 ft. Elsewhere, SE winds 35 to
40 kt. Seas 21 to 22 ft. Scattered showers and isolated thunderstorms.

SUN
HURRICANE CONDITIONS POSSIBLE.

SUN NIGHT
HURRICANE CONDITIONS POSSIBLE.

MON
HURRICANE CONDITIONS POSSIBLE.

MON NIGHT
HURRICANE CONDITIONS POSSIBLE.

TUE
N of 29N, S to SW winds 30 to 35 kt. Seas 25 ft.
Elsewhere, S to SW winds 15 to 20 kt. Seas 9 to 11 ft.



AMZ117-220900-
Bahamas including Cay Sal Bank-
446 PM EDT Thu Sep 21 2017

TROPICAL STORM WARNING


TONIGHT
TROPICAL STORM CONDITIONS POSSIBLE. ATLC Exposures,
NE winds 15 to 20 kt, increasing to 25 to 30 kt late. Seas 10 ft,
building to 14 ft late. Elsewhere, NE winds 15 to 20 kt. Seas 4
ft.

FRI
TROPICAL STORM CONDITIONS EXPECTED. ATLC Exposures, N to
NE winds 35 to 45 kt. Seas 19 to 20 ft. Elsewhere, NE winds 25 to
30 kt. Seas 4 to 5 ft.

FRI NIGHT
TROPICAL STORM CONDITIONS POSSIBLE. ATLC
Exposures, N to NE winds 35 to 40 kt, becoming N 25 to 30 kt
late. Elsewhere, N to NE winds 25 to 30 kt. Seas 19 to
20 ft ATLC Exposures, and 6 to 7 ft elsewhere. Scattered showers
and isolated thunderstorms.

SAT
TROPICAL STORM CONDITIONS POSSIBLE. ATLC Exposures, NW
to N winds 25 to 30 kt. Seas 18 ft. Elsewhere, N winds 20 to
25 kt. Seas 8 ft.

SAT NIGHT
ATLC Exposures, NW winds 25 to 30 kt. Seas 16 to
17 ft. Elsewhere, N winds 15 to 20 kt. Seas 8 ft.

SUN
NW winds 15 to 20 kt. Seas 15 ft ATLC Exposures, and 8 ft
elsewhere.

SUN NIGHT
NW winds 15 to 20 kt. Seas 13 to 14 ft ATLC
Exposures, and 7 ft elsewhere.

MON
W winds 15 to 20 kt. Seas 10 to 11 ft ATLC Exposures, and
5 to 6 ft elsewhere.

MON NIGHT
NW to N winds 10 to 15 kt. Seas 8 to 9 ft ATLC
Exposures, and 4 ft elsewhere.

TUE
W to NW winds 10 to 15 kt, shifting to N in the
afternoon. Seas 7 ft ATLC Exposures, and 3 to 4 ft elsewhere.



AMZ119-220900-
Atlantic from 22N to 27N E of Bahamas to 70W-
446 PM EDT Thu Sep 21 2017

HURRICANE WARNING


TONIGHT
HURRICANE CONDITIONS. N of 25N, NE to E winds 15 to
20 kt. Seas 14 to 17 ft. Elsewhere, NE to E winds 50 to 60 kt,
increasing to 75 to 95 kt late. Seas 25 ft, building to
34 ft late. Scattered showers and isolated thunderstorms. VSBY
1 NM or less.

FRI
HURRICANE CONDITIONS EXPECTED. N of 25N, NE to E winds
15 to 20 kt, increasing to 30 to 35 kt in the afternoon.
Elsewhere, NE winds 75 to 95 kt. Seas 19 to 22 ft N of 25N, and
43 to 44 ft elsewhere. Numerous showers and isolated thunderstorms. VSBY
1 NM or less.

FRI NIGHT
HURRICANE CONDITIONS EXPECTED. N of 25N, NE to E
winds 50 to 55 kt, becoming NE 80 to 90 kt late. Seas
27 ft, building to 35 ft late. Elsewhere, N winds
70 to 90 kt, shifting to W late. Seas 43 to 44 ft.
Numerous showers and isolated thunderstorms. VSBY 1 NM or less.

SAT
HURRICANE CONDITIONS EXPECTED. N of 25N, N to NE winds
70 to 90 kt. Seas 44 ft. Elsewhere, SW to W winds 70 to 90 kt,
diminishing to 50 to 55 kt in the afternoon. Seas 37 ft,
subsiding to 28 ft in the afternoon. Scattered showers and
isolated thunderstorms. VSBY 1 NM or less.

SAT NIGHT
HURRICANE CONDITIONS POSSIBLE. N of 25N, W winds
75 to 85 kt. Seas 43 ft, subsiding to 33 ft late.
Elsewhere, SW winds 35 to 40 kt, diminishing to 25 to 30 kt
late. Seas 19 to 22 ft. Scattered showers and isolated
thunderstorms. VSBY 1 NM or less.

SUN
HURRICANE CONDITIONS POSSIBLE.

SUN NIGHT
TROPICAL STORM CONDITIONS POSSIBLE.

MON
TROPICAL STORM CONDITIONS POSSIBLE.

MON NIGHT
SW to W winds 15 to 20 kt. Seas 9 to 10 ft.

TUE
SW winds 15 to 20 kt. Seas 8 ft.



AMZ121-220900-
Atlantic from 22N to 27N between 65W and 70W-
446 PM EDT Thu Sep 21 2017

HURRICANE WARNING


TONIGHT
TROPICAL STORM CONDITIONS. N of 25N, E to SE winds
15 to 20 kt. Elsewhere, E winds 50 to 60 kt, becoming E to SE
70 to 80 kt late. Seas 13 to 15 ft N of 25N, and 23 to
25 ft elsewhere. Scattered showers and isolated thunderstorms. VSBY 1 NM
or less.

FRI
TROPICAL STORM CONDITIONS EXPECTED. N of 25N, E to SE
winds 20 to 25 kt. Elsewhere, E to SE winds 70 to 80 kt,
becoming SE 45 to 55 kt in the afternoon. Seas 16 to 17 ft N of
25N, and 26 ft elsewhere. Scattered showers and isolated thunderstorms.
VSBY 1 NM or less.

FRI NIGHT
TROPICAL STORM CONDITIONS EXPECTED. N of 25N, E to
SE winds 35 to 40 kt. Seas 18 to 19 ft. Elsewhere, SE winds 40 to
50 kt. Seas 20 to 23 ft. Scattered showers and isolated thunderstorms.

SAT
TROPICAL STORM CONDITIONS EXPECTED. SE to S winds 35 to
40 kt. Seas 21 ft N of 25N, and 15 to 18 ft elsewhere. Scattered
showers and isolated thunderstorms.

SAT NIGHT
HURRICANE CONDITIONS POSSIBLE. N of 25N, SE to S
winds 35 to 40 kt. Seas 18 to 20 ft. Elsewhere, SE to S winds
25 to 30 kt. Seas 13 ft. Scattered showers and isolated thunderstorms.

SUN
TROPICAL STORM CONDITIONS POSSIBLE.

SUN NIGHT
TROPICAL STORM CONDITIONS POSSIBLE.

MON
TROPICAL STORM CONDITIONS POSSIBLE.

MON NIGHT
S winds 15 to 20 kt. Seas 8 ft.

TUE
S winds 15 to 20 kt. Seas 8 ft.



AMZ123-220900-
Atlantic S of 22N W of 70W including Approaches to the Windward
Passage-
446 PM EDT Thu Sep 21 2017

HURRICANE WARNING


TONIGHT
HURRICANE CONDITIONS. N winds 85 to 95 kt. Seas
34 to 35 ft. Scattered showers and isolated thunderstorms. VSBY 1 NM or
less.

FRI
HURRICANE CONDITIONS EXPECTED. NW to N winds 80 to
90 kt, becoming NW 55 to 60 kt in the afternoon. Seas 31 ft,
subsiding to 24 ft in the afternoon. Scattered showers and
isolated thunderstorms. VSBY 1 NM or less.

FRI NIGHT
TROPICAL STORM CONDITIONS POSSIBLE. NW winds 35 to
40 kt, becoming W to NW 25 to 30 kt late. Seas 16 to
18 ft. Scattered showers and isolated thunderstorms.

SAT
W to NW winds 25 to 30 kt. Seas 12 to 14 ft.

SAT NIGHT
W winds 15 to 20 kt. Seas 11 ft.

SUN
SW winds 15 to 20 kt. Seas 10 to 11 ft.

SUN NIGHT
S to SW winds 5 to 10 kt. Seas 9 to 10 ft.

MON
S winds 5 to 10 kt. Seas 8 to 9 ft.

MON NIGHT
E winds 10 to 15 kt. Seas 6 to 7 ft.

TUE
SE winds 10 to 15 kt. Seas 6 ft.



AMZ125-220900-
Atlantic S of 22N between 65W and 70W including Puerto Rico
Trench-
446 PM EDT Thu Sep 21 2017

HURRICANE WARNING


TONIGHT
HURRICANE CONDITIONS. SE to S winds 75 to 95 kt.
Seas 37 ft, subsiding to 28 ft late. Scattered showers
and isolated thunderstorms. VSBY 1 NM or less.

FRI
TROPICAL STORM CONDITIONS EXPECTED. SE to S winds 70 to
80 kt, diminishing to 40 to 45 kt in the afternoon. Seas 18 to
21 ft. Scattered showers and isolated thunderstorms.

FRI NIGHT
TROPICAL STORM CONDITIONS POSSIBLE. SE to S winds
25 to 30 kt. Seas 14 to 16 ft. Scattered showers and isolated
thunderstorms.

SAT
S winds 25 to 30 kt. Seas 11 to 12 ft. Scattered showers
and isolated thunderstorms.

SAT NIGHT
SE to S winds 15 to 20 kt. Seas 10 ft. Scattered
showers and isolated thunderstorms.

SUN
SE to S winds 15 to 20 kt. Seas 10 ft.

SUN NIGHT
SE winds 10 to 15 kt. Seas 10 ft.

MON
SE to S winds 10 to 15 kt. Seas 8 to 9 ft.

MON NIGHT
SE winds 10 to 15 kt. Seas 7 to 8 ft.

TUE
SE to S winds 10 to 15 kt. Seas 7 ft.



AMZ127-220900-
Atlantic from 19N to 22N between 55W and 65W-
446 PM EDT Thu Sep 21 2017

TONIGHT
E to SE winds 15 to 20 kt. Seas 7 ft E of 60W, and
10 ft elsewhere.

FRI
E to SE winds 15 to 20 kt. Seas 7 to 8 ft E of 60W, and
9 to 10 ft elsewhere.

FRI NIGHT
E to SE winds 5 to 10 kt E of 60W, and SE 15 to
20 kt elsewhere. Seas 8 to 9 ft.

SAT
SE winds 15 to 20 kt. Seas 8 ft.

SAT NIGHT
SE winds 10 to 15 kt. Seas 8 ft.

SUN
E to SE winds 10 to 15 kt. Seas 8 ft.

SUN NIGHT
E to SE winds 10 to 15 kt. Seas 8 ft.

MON
SE winds 10 to 15 kt. Seas 8 ft.

MON NIGHT
E to SE winds 10 to 15 kt. Seas 7 to 8 ft.

TUE
E to SE winds 10 to 15 kt. Seas 8 ft.



Forecaster AL