Coastal Waters Forecast
Issued by NWS

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FZUS52 KKEY 260226
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1026 PM EDT Wed Apr 25 2018

Florida Bay...Hawk Channel and Straits of Florida from Ocean Reef to
south of Dry Tortugas...and the extreme southeastern Gulf of
Mexico...including The Florida Keys National Marine Sanctuary

Seas are 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.

GMZ005-260830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1026 PM EDT Wed Apr 25 2018

.SYNOPSIS...A weak pressure gradient will prevail for the balance
of this week and into the weekend before a large and
strengthening area of high pressure gradually builds into our
region from the north late this weekend.

The Approximate Shoreward Edge of the Gulf Stream as of
April 24, 2018...

21 NM South of Dry Tortugas Light...on Loggerhead Key.
 8 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
 8 NM South of Sand Key Light...off Key West.
29 NM South of Looe Key...off Big Pine Key.
29 NM South of Sombrero Key Light...off Marathon.
19 NM Southeast of Alligator Reef Light...off Islamorada.
14 NM Southeast of Molasses Reef Light...off Key Largo.
11 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic
Office.

$$

GMZ031-260830-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1026 PM EDT Wed Apr 25 2018

.OVERNIGHT...west to northwest winds near 10 knots, becoming
north. Bay waters a light chop.
.THURSDAY...North to northeast winds 5 to 10 knots, becoming
variable in the afternoon. Bay waters smooth to a light chop.
Isolated showers.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters
smooth to a light chop. Isolated showers.
.FRIDAY...Southwest winds 5 to 10 knots. Bay waters smooth to a
light chop. Scattered showers.
.FRIDAY NIGHT...West winds 5 to 10 knots. Bay waters smooth to a
light chop. Scattered showers.
.SATURDAY...West winds 5 to 10 knots. Bay waters smooth to a
light chop. Isolated showers.
.SATURDAY NIGHT...Northwest to north winds near 10 knots. Bay
waters a light chop. Isolated showers.
.SUNDAY...Northeast winds 5 to 10 knots, becoming east to
southeast in the afternoon. Bay waters smooth to a light chop.
Isolated showers.
.SUNDAY NIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers.
.MONDAY...Northeast to east winds 15 to 20 knots. Bay waters
choppy. Isolated showers.
.MONDAY NIGHT...East winds 15 to 20 knots. Bay waters choppy.
Isolated showers.

$$

GMZ032-035-260830-
Bayside and Gulf side from Craig Key to west end of Seven Mile
Bridge-
Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
1026 PM EDT Wed Apr 25 2018

.OVERNIGHT...Northwest to north winds 5 to 10 knots. Seas 1 to 2
feet. Nearshore waters smooth to a light chop.
.THURSDAY...North to northeast winds 5 to 10 knots, becoming
southeast to south late in the afternoon. Seas subsiding to 1
foot or less. Nearshore waters smooth to a light chop. Isolated
showers.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Isolated showers.
.FRIDAY...Southwest to west winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. Scattered showers.
.FRIDAY NIGHT...West to northwest winds 5 to 10 knots. Seas
1 foot or less. Nearshore waters smooth to a light chop.
Scattered showers.
.SATURDAY...Northwest to north winds 5 to 10 knots. Seas 1 to
2 feet. Nearshore waters smooth to a light chop. Isolated
showers.
.SATURDAY NIGHT...Northwest to north winds near 10 knots. Seas
1 to 2 feet. Nearshore waters a light chop. Isolated showers.
.SUNDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. Isolated showers.
.SUNDAY NIGHT...Northeast to east winds 10 to 15 knots. Seas
1 to 2 feet. Nearshore waters a light to moderate chop. Isolated
showers.
.MONDAY...East winds 15 to 20 knots. Seas 1 to 3 feet. Nearshore
waters choppy. Isolated showers.
.MONDAY NIGHT...East winds near 20 knots. Seas 2 to 3 feet.
Nearshore waters rough. Isolated showers.

$$

GMZ042>044-260830-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
1026 PM EDT Wed Apr 25 2018

.OVERNIGHT...West to northwest winds near 10 knots, becoming
northwest to north and decreasing to 5 to 10 knots late. Seas 1 to
2 feet. Nearshore waters a light chop, becoming a smooth to a
light chop.
.THURSDAY...North to northeast winds 5 to 10 knots, becoming
variable in the afternoon. Seas 1 foot or less. Nearshore waters
smooth to a light chop. Isolated showers.
.THURSDAY NIGHT...South to southwest winds 5 to 10 knots. Seas
1 foot or less. Nearshore waters smooth to a light chop. Isolated
showers.
.FRIDAY...Southwest to west winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Scattered showers.
.FRIDAY NIGHT...West winds 10 knots. Seas around 1 foot.
Nearshore waters a light chop. Scattered showers and isolated
thunderstorms.
.SATURDAY...Northwest to north winds near 10 knots. Seas 1 to 2
feet. Nearshore waters a light chop. Scattered showers.
.SATURDAY NIGHT...North winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. Isolated showers.
.SUNDAY...Northeast winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters smooth to a light chop. Isolated showers.
.SUNDAY NIGHT...Northeast to east winds near 10 knots increasing
to near 15 knots late. Seas 1 to 2 feet, building to 2 to 3 feet.
Nearshore waters a light to moderate chop. Isolated showers.
.MONDAY...East winds near 20 knots. Seas 3 to 5 feet. Nearshore
waters rough. Isolated showers.
.MONDAY NIGHT...East winds 20 to 25 knots. Seas 3 to 5 feet.
Nearshore waters very rough. Isolated showers.

$$

GMZ052>055-072>075-260830-
Straits of Florida from Ocean Reef to Craig Key out 20 NM-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge out 20 NM-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal out 20 NM-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas out 20 NM-
Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge 20 to 60 NM out-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal 20 to 60 NM out-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas 20 to 60 NM out-
1026 PM EDT Wed Apr 25 2018

.OVERNIGHT...West to northwest winds near 10 knots, becoming
north. Seas 1 to 3 feet.
.THURSDAY...East winds 5 to 10 knots. Seas 1 to 2 feet. Isolated
showers.
.THURSDAY NIGHT...East to southeast winds 5 to 10 knots, becoming
south to southwest late. Seas 1 to 2 feet. Isolated showers.
.FRIDAY...Southwest to west winds 5 to 10 knots. Seas 1 to
2 feet. Scattered showers.
.FRIDAY NIGHT...West winds near 10 knots. Seas 1 to 2 feet.
Scattered showers and isolated thunderstorms.
.SATURDAY...Northwest to north winds near 10 knots. Seas 1 to 3
feet. Scattered showers.
.SATURDAY NIGHT...North winds 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers.
.SUNDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Isolated showers.
.SUNDAY NIGHT...Northeast to east winds 10 to 15 knots,
increasing to 15 to 20 knots late. Seas 2 to 3 feet, building to
3 to 5 feet. Isolated showers.
.MONDAY...Northeast to east winds 20 to 25 knots. Seas 4 to
6 feet, building to 5 to 8 feet in the afternoon. Isolated
showers.
.MONDAY NIGHT...East winds 20 to 25 knots. Seas 6 to 10 feet.
Isolated showers.

$$

GMZ033-034-260830-
Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out
and beyond 5 fathoms-
Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel-
1026 PM EDT Wed Apr 25 2018

.OVERNIGHT...Northwest to north winds 5 to 10 knots. Seas 2 to
3 feet.
.THURSDAY...North winds near 5 knots, becoming variable in the
afternoon. Seas 1 to 2 feet. Isolated showers.
.THURSDAY NIGHT...Northwest winds 5 to 10 knots, becoming south
to southwest in the late evening and overnight. Seas 1 to 2 feet.
Isolated showers.
.FRIDAY...West winds 5 to 10 knots. Seas 1 to 2 feet. Scattered
showers.
.FRIDAY NIGHT...West to northwest winds 5 to 10 knots. Seas 1 to
3 feet. Scattered showers.
.SATURDAY...North winds near 10 knots. Seas 2 to 4 feet. Isolated
showers.
.SATURDAY NIGHT...North winds 10 to 15 knots. Seas 3 to 4 feet.
Isolated showers.
.SUNDAY...North to northeast winds 10 to 15 knots. Seas 2 to
3 feet. Isolated showers.
.SUNDAY NIGHT...Northeast to east winds 10 to 15 knots, increasing
to near 15 knots late. Seas 2 to 3 feet. Isolated showers.
.MONDAY...East winds 15 to 20 knots. Seas 3 to 5 feet. Isolated
showers.
.MONDAY NIGHT...East winds near knots. Seas 4 to 6 feet. Isolated
showers.

$$



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