Coastal Waters Forecast
Issued by NWS

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FZUS52 KKEY 261426
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1026 AM EDT Thu Apr 26 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.

GMZ005-262030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1026 AM EDT Thu Apr 26 2018

.SYNOPSIS...A weak pressure pattern will prevail across the
coastal waters of the Florida Keys this afternoon through Sunday.
High pressure developing over the southeastern United States
Sunday night will broaden and intensify over the western North
Atlantic Monday and Monday night.

The Approximate Shoreward Edge of the Gulf Stream as of
April 26, 2018...

22 NM South of Dry Tortugas Light...on Loggerhead Key.
19 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
20 NM South of Sand Key Light...off Key West.
31 NM South of Looe Key...off Big Pine Key.
31 NM South of Sombrero Key Light...off Marathon.
17 NM Southeast of Alligator Reef Light...off Islamorada.
13 NM Southeast of Molasses Reef Light...off Key Largo.
10 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic
Office.

$$

GMZ031-262030-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1026 AM EDT Thu Apr 26 2018

.THIS AFTERNOON...Northeast winds 5 to 10 knots early, becoming
variable near 5 knots. Bay waters smooth to a light chop.
.TONIGHT...Southwest to west winds 5 to 10 knots. Bay waters
smooth to a light chop.
.FRIDAY...Southwest to west winds 5 to 10 knots. Bay waters
smooth to a light chop. Scattered showers.
.FRIDAY NIGHT...West winds near 10 knots. Bay waters a light
chop. Scattered showers and isolated thunderstorms.
.SATURDAY...West winds 5 to 10 knots. Bay waters smooth to a
light chop. Scattered showers early. .
.SATURDAY NIGHT...Northwest to north winds near 10 knots. Bay
waters a light chop. Isolated showers.
.SUNDAY...North winds 5 to 10 knots, becoming east. 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 near 20 knots. Bay waters rough
Isolated showers.

$$

GMZ032-035-262030-
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 AM EDT Thu Apr 26 2018

.THIS AFTERNOON...Northeast winds 5 to 10 knots, becoming
variable near 5 knots. Seas 1 foot or less. Nearshore waters
smooth to a light chop.
.TONIGHT...Southwest to west winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop.
.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 near 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 early.
.SATURDAY NIGHT...Northwest to north winds near 10 knots. Seas
1 to 2 feet. Nearshore waters a light chop. Isolated showers.
.SUNDAY...North 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>044-262030-
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 AM EDT Thu Apr 26 2018

.THIS AFTERNOON...Variable winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth.
.TONIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop.
.FRIDAY...Southwest to west winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. Scattered showers.
.FRIDAY NIGHT...West winds near 10 knots. Seas 1 to 2 feet.
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 early.
.SATURDAY NIGHT...North winds near 10 knots. Seas 1 to 2 feet.
Nearshore waters a light chop. Isolated showers.
.SUNDAY...North winds near 10 knots. Seas 1 to 2 feet. Nearshore
waters 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 AND MONDAY NIGHT...East winds near 20 knots. Seas 3 to 4
feet. Nearshore waters rough. Isolated showers.

$$

GMZ052>055-072>075-262030-
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 AM EDT Thu Apr 26 2018

.THIS AFTERNOON...Variable winds 5 to 10 knots. Seas 1 to 2 feet.
Isolated showers.
.TONIGHT...East to southeast winds 5 to 10 knots, becoming south
to southwest. 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 early.
.SATURDAY NIGHT...North winds 10 to 15 knots. Seas 2 to 3 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 15 to 20 knots. Seas 2 to 3 feet, building to 3 to
5 feet. Isolated showers.
.MONDAY...Northeast to east winds near 20 knots. Seas 4 to 6
feet, building to 5 to 8 feet. Isolated showers.
.MONDAY NIGHT...East winds 20 to 25 knots. Seas 6 to 10 feet.
Isolated showers.

$$

GMZ033-034-262030-
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 AM EDT Thu Apr 26 2018

.THIS AFTERNOON...Variable winds near 5 knots. Seas around 1
foot.
.TONIGHT...West winds 5 to 10 knots. Seas 1 to 2 feet.
.FRIDAY...West winds 5 to 10 knots. Seas 1 to 2 feet. Scattered
showers.
.FRIDAY NIGHT...West to northwest winds near 10 knots. Seas 1 to
3 feet. Scattered showers and isolated thunderstorms.
.SATURDAY...North winds near 10 knots. Seas 2 to 4 feet.
Scattered showers early.
.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...North to northeast winds 10 to 15 knots, becoming
east. Seas 2 to 3 feet. Isolated showers.
.MONDAY...East winds increasing to 15 to 20 knots. Seas building
to 3 to 5 feet. Isolated showers.
.MONDAY NIGHT...East winds near 20 knots. Seas 4 to 6 feet.
Isolated showers.

$$

CLR



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