Coastal Waters Forecast
Issued by NWS Key West, FL

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FZUS52 KKEY 031526
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1026 AM EST Wed Mar 3 2021

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.

GMZ005-032130-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1026 AM EST Wed Mar 3 2021

.SYNOPSIS...Light to gentle southwesterly breezes will clock
northwest to north and freshen tonight behind a cold front. Winds
will then veer northeast to east and gradually slacken Thursday
night into Friday. A stronger cold front will blast through the
coastal waters on Saturday. Behind the front, breezes will
become fresh to strong beginning Sunday, likely lasting through
early next week.

The Approximate Shoreward Edge of the Gulf Stream as of
March 02...

53 NM South of Dry Tortugas Light...on Loggerhead Key.
24 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
15 NM South of Sand Key Light...off Key West.
11 NM South of Looe Key...off Big Pine Key.
 7 NM South of Sombrero Key Light...off Marathon.
 9 NM Southeast of Alligator Reef Light...off Islamorada.
 5 NM Southeast of Molasses Reef Light...off Key Largo.
 8 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

$$

GMZ031-032130-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1026 AM EST Wed Mar 3 2021

.THIS AFTERNOON...Southwest winds near 10 knots, becoming west
and increasing to 10 to 15 knots. Bay waters a light chop,
becoming a light to moderate chop.
.TONIGHT...Northwest winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers.
.THURSDAY...Northwest winds 10 to 15 knots. Bay waters a light to
moderate chop.
.THURSDAY NIGHT...North to northeast winds 10 to 15 knots. Bay
waters a light to moderate chop.
.FRIDAY...Northeast to east winds 10 to 15 knots. Bay waters a
light to moderate chop.
.FRIDAY NIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Isolated showers.
.SATURDAY...East to southeast winds near 10 to 15 knots, becoming
southwest to west. Bay waters a light to moderate chop. Scattered
showers.
.SATURDAY NIGHT...Northwest to north winds 15 to 20 knots. Bay
waters choppy. Scattered showers.
.SUNDAY...North to northeast winds 15 to 20 knots, increasing to
near 20 knots. Bay waters choppy, becoming rough.
.SUNDAY NIGHT...Northeast winds 20 to 25 knots. Bay waters very
rough.

$$

GMZ032-035-032130-
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 EST Wed Mar 3 2021

.THIS AFTERNOON...Southwest winds near 10 knots, becoming west to
northwest and increasing to 10 to 15 knots. Seas around 1 foot,
building to 1 to 2 feet. Nearshore waters a light chop, becoming a
light to moderate chop.
.TONIGHT...Northwest winds 10 to 15 knots, increasing to near 15
knots. Seas 1 to 3 feet. Nearshore waters a light to moderate
chop, becoming a moderate chop. Isolated showers.
.THURSDAY...Northwest to north winds 10 to 15 knots. Seas 1 to 3
feet. Nearshore waters a light to moderate chop.
.THURSDAY NIGHT...North to northeast winds near 15 knots. Seas 1
to 3 feet. Nearshore waters a moderate chop.
.FRIDAY...Northeast to east to 10 to 15 knots. Seas 1 to 3 feet.
Nearshore waters a light to moderate chop.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Isolated showers.
.SATURDAY...East to southeast winds near 10 knots, becoming
southwest to west and increasing to 10 to 15 knots. Seas around 1
foot, building to 1 to 2 feet. Nearshore waters a light chop,
becoming a light to moderate chop. Scattered showers.
.SATURDAY NIGHT...North winds 15 to 20 knots, increasing to near
20 knots. Seas 1 to 3 feet, building to 2 to 4 feet. Nearshore
waters choppy, becoming rough. Scattered showers.
.SUNDAY...North to northeast winds 15 to 20 knots, increasing to
near 20 knots. Seas 2 to 5 feet, except 4 to 6 feet west of the
Marquesas Keys. Nearshore waters choppy, becoming rough.
.SUNDAY NIGHT...Northeast winds 20 to 25 knots. Seas 2 to 5 feet,
except 5 to 6 feet west of the Marquesas Keys. Nearshore waters
very rough.

$$

GMZ042>044-032130-
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 EST Wed Mar 3 2021

.THIS AFTERNOON...Southwest to west winds 10 to 15 knots,
becoming west. Seas 1 to 2 feet. Nearshore waters a light to
moderate chop.
.TONIGHT...Northwest winds near 15 knots. Seas 1 to 3 feet.
Nearshore waters a moderate chop. Isolated showers.
.THURSDAY...Northwest winds 10 to 15 knots. Seas 1 to 3 feet.
Nearshore waters a light to moderate chop.
.THURSDAY NIGHT...North to northeast winds 10 to 15 knots,
increasing to near 15 knots. Seas 2 to 3 feet. Nearshore waters a
light to moderate chop, becoming a moderate chop.
.FRIDAY...Northeast to east winds 10 to 15 knots. Seas 1 to
3 feet. Nearshore waters a light to moderate chop.
.FRIDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 1 to
3 feet. Nearshore waters a light to moderate chop. Isolated
showers.
.SATURDAY...Southeast to south winds near 10 knots, becoming
southwest to west and increasing to 10 to 15 knots. Seas 1 to 2
feet. Nearshore waters a light chop, becoming a light to moderate
chop. Scattered showers.
.SATURDAY NIGHT...Northwest to north winds 15 to 20 knots. Seas 1
to 3 feet, except building to 3 to 4 feet west of Cosgrove Shoal
Light. Nearshore waters choppy. Scattered showers.
.SUNDAY...Northeast winds 15 to 20 knots, increasing to near 20
knots. Seas 2 to 3 feet, except 3 to 5 feet west of Cosgrove
Shoal Light. Nearshore waters choppy, becoming rough.
.SUNDAY NIGHT...Northeast to east winds 20 to 25 knots. Seas 3 to
6 feet. Nearshore waters very rough.

$$

GMZ052>055-072>075-032130-
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 EST Wed Mar 3 2021

.THIS AFTERNOON...Southwest to west winds 10 to 15 knots,
becoming west. Seas 1 to 3 feet.
.TONIGHT...Northwest winds near 15 knots. Seas 1 to 3 feet,
building to 2 to 4 feet. Isolated showers.
.THURSDAY...Northwest winds near 15 knots, decreasing to 10 to 15
knots. Seas 2 to 4 feet. Isolated showers.
.THURSDAY NIGHT...North to northeast winds near 15 knots. Seas 3
to 5 feet. Isolated showers.
.FRIDAY...Northeast to east winds 10 to 15 knots. Seas 3 to 5
feet, subsiding to 2 to 4 feet.
.FRIDAY NIGHT...East to southeast winds 10 to 15 knots. Seas 2 to
4 feet. Isolated showers.
.SATURDAY...Southeast to south winds 10 to 15 knots, becoming
southwest to west. Seas 2 to 3 feet. Scattered showers.
.SATURDAY NIGHT...Northwest to north winds 15 to 20 knots. Seas
2 to 4 feet, building to 4 to 6 feet. Scattered showers.
.SUNDAY...Northeast winds near 20 knots. Seas 4 to 7 feet.
Isolated showers.
.SUNDAY NIGHT...Northeast to east winds 20 to 25 knots. Seas 5 to
9 feet.

$$

GMZ033-034-032130-
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 EST Wed Mar 3 2021

.THIS AFTERNOON...Southwest to west winds near 10 knots, becoming
west to northwest and increasing to 10 to 15 knots. Seas 1 to 2
feet. Isolated showers.
.TONIGHT...Northwest winds 10 to 15 knots, increasing to near 15
knots. Seas 2 to 3 feet. Isolated showers.
.THURSDAY...Northwest to north winds 10 to 15 knots. Seas 3 to
4 feet.
.THURSDAY NIGHT...North to northeast winds 15 to 20 knots. Seas 3
to 4 feet.
.FRIDAY...Northeast winds 10 to 15 knots, decreasing to 5 to 10
knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet.
.FRIDAY NIGHT...Northeast to east winds near 10 knots. Seas 1 to
2 feet. Isolated showers.
.SATURDAY...East to southeast winds near 10 knots, becoming
southwest to west and increasing to 10 to 15 knots. Seas 1 to 2
feet, building to 2 to 3 feet. Scattered showers.
.SATURDAY NIGHT...North winds near 20 knots. Seas 2 to 5 feet.
Isolated showers.
.SUNDAY...Northeast winds near 20 knots. Seas 4 to 6 feet.
.SUNDAY NIGHT...Northeast to east winds 20 to 25 knots. Seas 4 to
7 feet.

$$



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