Skip Navigation Links weather.gov 
NOAA logo-Select to go to the NOAA homepage NDBC Title GraphicClick to go to NDBC home page   Select to go to the NWS homepage
Home About Us Contact Us
 
 
    
    Station List

 Data Access
    Mobile Access
    Classic Maps
         Recent
         DART®
    Obs Search
    Ship Obs Report
    BuoyCAMs
    TAO
    DODS
    OceanSITES
    HF Radar
    OSMC
    Dial-A-Buoy
    RSS Feeds Image indicating link to RSS feed access page
    Web Widget
    Web Data Guide
    Maintenance Schedule
    Station Status Report

 Program Info
    TAO
    DART®
    IOOS®

 Publications
    NDBC PEA
    NDBC FONSI
    NDBC DQC Handbook

 Visitor Information
 
USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.

Hurricane Symbol Storm Special! View the latest observations near Atlantic Tropical Storm Epsilon.

National Weather Service Marine Forecast FZUS52 KKEY

FZUS52 KKEY 201426
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
1026 AM EDT Tue Oct 20 2020

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.

GMZ005-202030-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1026 AM EDT Tue Oct 20 2020

SYNOPSIS
An expansive high pressure ridge will remain across
the eastern third of the United States. Meanwhile, a broad area of
lower pressure over the Western Caribbean Sea northward into the
extreme Southeast Gulf of Mexico, will slide slowly west into 
the Yucatan Peninsula. Strong east breezes will peak and lull
today. Moderate to occasionally fresh east breezes will persist
tonight through at least Thursday night. 

The Approximate Shoreward Edge of the Gulf Stream as of
October 20...

44 NM South of Dry Tortugas Light...on Loggerhead Key.
48 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
53 NM South of Sand Key Light...off Key West.
45 NM South of Looe Key...off Big Pine Key.
15 NM South of Sombrero Key Light...off Marathon.
12 NM Southeast of Alligator Reef Light...off Islamorada.
 6 NM Southeast of Molasses Reef Light...off Key Largo.
 4 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.



GMZ031-202030-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
1026 AM EDT Tue Oct 20 2020

SMALL CRAFT SHOULD EXERCISE CAUTION


THIS AFTERNOON
East winds 15 to 20 knots, decreasing to near
15 knots. Bay waters choppy, becoming a moderate chop. Numerous
showers and isolated thunderstorms.

TONIGHT THROUGH WEDNESDAY NIGHT
East winds 15 to 20 knots. Bay
waters choppy. Scattered to numerous showers and isolated
thunderstorms.

THURSDAY
East winds near 15 knots. Bay waters a moderate chop.
Scattered showers and isolated thunderstorms.

THURSDAY NIGHT
East winds near 15 knots. Bay waters a moderate
chop. Scattered showers and isolated thunderstorms.

FRIDAY
East to southeast winds near 15 knots. Bay waters a
moderate chop. Scattered showers and isolated thunderstorms.

FRIDAY NIGHT THROUGH SATURDAY NIGHT
East to southeast winds 10
to 15 knots. Bay waters a light to moderate chop. Scattered
showers and Isolated thunderstorms.



GMZ032-035-202030-
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 Tue Oct 20 2020

SMALL CRAFT ADVISORY IN EFFECT


THIS AFTERNOON
East winds 20 to 25 knots, decreasing to near
20 knots. Seas 2 to 3 feet, except 3 to 5 feet west of the
Marquesas Keys. Nearshore waters very rough, becoming rough. Winds
and seas higher near numerous showers and isolated thunderstorms.

TONIGHT
East winds near 20 knots. Seas 2 to 3 feet, except 3
to 4 feet west of the Marquesas Keys. Nearshore waters rough.
Numerous showers and isolated thunderstorms.

WEDNESDAY THROUGH THURSDAY
East winds 15 to 20 knots. Seas 1
to 3 feet, except 2 to 4 feet west of the Marquesas Keys.
Nearshore waters choppy. Scattered to numerous showers and
isolated thunderstorms.

THURSDAY NIGHT AND FRIDAY
East to southeast winds near 15
knots. Seas 2 to 3 feet. Nearshore waters a moderate chop.
Scattered showers and isolated thunderstorms.

FRIDAY NIGHT THROUGH SATURDAY NIGHT
East to southeast winds 10
to 15 knots. Seas 1 to 2 feet. Nearshore waters a light to
moderate chop. Scattered showers and isolated thunderstorms.



GMZ042>044-202030-
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 Tue Oct 20 2020

SMALL CRAFT ADVISORY IN EFFECT


THIS AFTERNOON
East winds 20 to 25 knots, decreasing to near
20 knots. Seas 3 to 5 feet. Nearshore waters very rough, becoming
rough. Winds and seas higher near numerous showers and isolated
thunderstorms.

TONIGHT
East winds near 20 knots with occasional gusts near 25
knots. Seas 3 to 4 feet. Nearshore waters rough. Scattered to
numerous showers and isolated thunderstorms.

WEDNESDAY THROUGH THURSDAY
East winds 15 to 20 knots. Seas 2
to 4 feet. Nearshore waters choppy. Numerous showers and isolated
thunderstorms.

THURSDAY NIGHT AND FRIDAY
East to southeast winds near 15
knots. Seas 2 to 3 feet. Nearshore waters a moderate chop.
Scattered showers and isolated thunderstorms.

FRIDAY NIGHT THROUGH SATURDAY NIGHT
East to southeast winds 10
to 15 knots. Seas 1 to 3 feet. Nearshore waters a light to
moderate chop. Scattered showers and isolated thunderstorms.



GMZ052>055-072>075-202030-
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 Tue Oct 20 2020

SMALL CRAFT ADVISORY IN EFFECT


THIS AFTERNOON
East winds 20 to 25 knots. Seas 6 to 8 feet.
Winds and seas higher near numerous showers and isolated
thunderstorms.

TONIGHT
East winds near 20 knots with gusts near 25 knots.
Seas 5 to 7 feet. Numerous showers and isolated thunderstorms.

WEDNESDAY THROUGH THURSDAY
East winds 15 to 20 knots. Seas 4
to 6 feet. Scattered to numerous showers and isolated
thunderstorms.

THURSDAY NIGHT AND FRIDAY
East to southeast winds near 15
knots. Seas 3 to 5 feet. Scattered showers and isolated
thunderstorms.

FRIDAY NIGHT THROUGH SATURDAY NIGHT
East to southeast winds 10
to 15 knots. Seas 2 to 4 feet. Scattered showers and isolated
thunderstorms. 



GMZ033-034-202030-
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 Tue Oct 20 2020

SMALL CRAFT ADVISORY IN EFFECT


THIS AFTERNOON
East winds near 25 knots. Seas 4 to 7 feet.
Winds and seas higher near numerous showers and isolated
thunderstorms.

TONIGHT
East winds 20 to 25 knots, decreasing to near 20 knots
late. Seas 4 to 6 feet. Numerous showers and isolated
thunderstorms.

WEDNESDAY THROUGH THURSDAY
East winds 15 to 20 knots. Seas 3
to 6 feet. Scattered to numerous showers and isolated
thunderstorms.

THURSDAY NIGHT
East to southeast winds 15 to 20 knots. Seas
3 to 5 feet. Scattered showers and isolated thunderstorms.

FRIDAY
East to southeast winds near 15 knots. Seas 2 to
4 feet. Scattered showers and isolated thunderstorms.

FRIDAY NIGHT THROUGH SATURDAY NIGHT
East to southeast winds 10
to 15 knots. Seas 2 to 3 feet. Scattered showers and isolated
thunderstorms.