Marine Weather Net

Hawk Channel from Craig Key to West End of Seven Mile Bridge Marine Forecast


TODAY

ENE
WINDS
5 - 10
KNOTS

TONIGHT

NE
WINDS
5 - 10
KNOTS

MONDAY

E
WINDS
10
KNOTS

MONDAY NIGHT

ENE
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
GMZ043 Forecast Issued: 417 AM EDT Sun Sep 19 2021

Today...Northeast To East Winds 5 To 10 Knots. Seas Around 1 Foot. Nearshore Waters Smooth To A Light Chop. Scattered Showers And Isolated Thunderstorms.
Tonight...Northeast Winds 5 To 10 Knots. Seas Around 1 Foot. Nearshore Waters Smooth To A Light Chop. Scattered Showers And Isolated Thunderstorms.
Monday...East Winds Near 10 Knots. Seas Building To 1 To 2 Feet. Nearshore Waters A Light Chop. Scattered Showers And Isolated Thunderstorms.
Monday Night...Northeast To East Winds Increasing To 10 To 15 Knots. Seas Building To Around 2 Feet. Nearshore Waters Becoming A Light To Moderate Chop. Scattered Showers And Isolated Thunderstorms.
Tuesday...East Winds 10 To 15 Knots, Decreasing To Near 10 Knots In The Afternoon. Seas Around 2 Feet. Nearshore Waters A Light To Moderate Chop, Becoming A Light Chop. Scattered Showers And Isolated Thunderstorms.
Tuesday Night...Northeast To East Winds Near 10 Knots. Seas 1 To 2 Feet. Nearshore Waters A Light Chop. Scattered Showers And Isolated Thunderstorms.
Wednesday...East Winds 5 To 10 Knots. Seas Around 1 Foot. Nearshore Waters Smooth To A Light Chop. Scattered Showers And Isolated Thunderstorms.
Wednesday Night...Variable Winds Near 5 Knots. Seas 1 Foot Or Less. Nearshore Waters Smooth. Scattered Showers And Isolated Thunderstorms.
Thursday...South To Southwest Winds Near 5 Knots. Seas 1 Foot Or Less. Nearshore Waters Smooth. Scattered Showers And Isolated Thunderstorms.
Thursday Night...Variable Winds Near 5 Knots, Becoming Southeast. Seas 1 Foot Or Less. Nearshore Waters Smooth. Scattered Showers And Isolated Thunderstorms.
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Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas: GMZ005
417 AM EDT Sun Sep 19 2021

A ridge will continue to build westward across the Florida Peninsula today, bringing gentle northeast to east breezes. Northeast to east breezes will peak and lull tonight through Wednesday, before becoming light and variable at times Wednesday night through Friday.

Gulf Stream
The Approximate Shoreward Edge of the Gulf Stream as of September 18...
- 49 NM South of Dry Tortugas Light...on Loggerhead Key.
- 29 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
- 37 NM South of Sand Key Light...off Key West.
- 45 NM South of Looe Key...off Big Pine Key.
- 39 NM South of Sombrero Key Light...off Marathon.
- 26 NM Southeast of Alligator Reef Light...off Islamorada.
- 17 NM Southeast of Molasses Reef Light...off Key Largo.
- 7 NM East of Carysfort Reef Light...off Ocean Reef.
Area Forecast Discussion
National Weather Service Key West FL
1019am EDT Sunday September 19 2021

Surface analysis depicts a split ridge pattern. The ridge associated with the Bermuda High is cut off on its westward extent by what is now Post- tropical Cyclone Odette, as another high pressure centered over Canada gradually strengthens and shifts eastward. Skies are mostly sunny across the Florida Keys and KBYX radar is only detecting isolated showers in the Straits of Florida 20 to 60 nm offshore. The 12z sounding at KEY detected a moisture-rich low-level environment with light northeast to east flow. A weak cloud line emerged late morning yesterday with waterspouts, and the environment appears even more favorable today for this development. The northeast steering flow will also favor any convection in South Florida propagating southwestward towards the Keys late this afternoon and evening. Inherited 30% Probability of Precipitation (slightly above guidance), and given the mesoscale nature of convection today, this seems appropriate, and no changes are planned to the forecast at this time.

Marine
There are no watches, warnings, or advisories currently in effect for the coastal waters of the Florida Keys. From synopsis, a ridge will continue to build westward across the Florida Peninsula this afternoon, bringing gentle northeast to east breezes. Breezes will peak and lull tonight through Wednesday, before becoming light and variable Wednesday night through Friday.

Climate
On this day in 1963, the daily record rainfall of 4.23 inches was recorded in Key West. Precipitation records date back to 1871.

NOAA Key West FL Office: Watches - Warnings - Advisories
FL...None. GM...None.