Marine Weather Net

Straits of Florida from Craig Key to West End of Seven Mile Bridge Out 20 NM Marine Forecast


THIS AFTERNOON

N
WINDS
25
KNOTS

TONIGHT

NE
WINDS
15 - 20
KNOTS

THURSDAY

ENE
WINDS
10 - 15
KNOTS

THURSDAY NIGHT

ESE
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
GMZ053 Forecast Issued: 1016 AM EST Wed Jan 22 2020

SMALL CRAFT ADVISORY IN EFFECT
This Afternoon...North Winds Near 25 Knots, Decreasing To Near 20 Knots. Seas 7 To 10 Feet, Subsiding To 5 To 8 Feet.
Tonight...Northeast Winds 15 To 20 Knots. Seas 4 To 7 Feet. Isolated Showers.
Thursday...Northeast To East Winds 10 To 15 Knots. Seas 3 To 6 Feet Due To A Northeast Swell. Isolated Showers.
Thursday Night...East To Southeast Winds 10 To 15 Knots. Seas 3 To 4 Feet. Scattered Showers.
Friday...South Winds 5 To 10 Knots, Becoming West. Seas 2 To 3 Feet. Isolated Showers.
Friday Night...Northwest To North Winds 5 To 10 Knots. Seas 1 To 2 Feet. Isolated Showers.
Saturday...North Winds 5 To 10 Knots. Seas 1 To 3 Feet. Isolated Showers.
Saturday Night And Sunday...North To Northeast Winds 10 To 15 Knots. Seas 2 To 4 Feet. Isolated Showers.
Sunday Night...North To Northeast Winds Near 15 Knots. Seas 2 To 4 Feet. Isolated Showers.
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Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas: GMZ005
1016 AM EST Wed Jan 22 2020

The low level flow between a high pressure system over the eastern United States and a deepening low pressure system northeast of the Bahamas will support strong northerly breezes through the remainder of the morning across the coastal waters of the Florida Keys. Low pressure will exit east of Bermuda tonight and Thursday. A high pressure ridge will then extend from New England down the U.S. eastern seaboard on Thursday. A col in the flow will pass the Keys on Friday, before a cold front pushes through the Keys later Saturday.

Gulf Stream
The Approximate Shoreward Edge of the Gulf Stream as of January 20...
- 9 NM South of Dry Tortugas Light...on Loggerhead Key.
- 2 NM South of Cosgrove Shoal Light...off the Marquesas Keys. Less than
- 1 NM South of Sand Key Light...off Key West.
- 2 NM South of Looe Key...off Big Pine Key.
- 3 NM South of Sombrero Key Light...off Marathon.
- 2 NM Southeast of Alligator Reef Light...off Islamorada. Less than
- 1 NM Southeast of Molasses Reef Light...off Key Largo. Less than
- 1 NM East of Carysfort Reef Light...off Ocean Reef.
Area Forecast Discussion
National Weather Service Key West FL
952am EST Wednesday Jan 22 2020

The coldest weather so far this season overtook the Keys this morning. Temperatures ranged from near 40 in Key Largo to 52 in Key West. Winds were howling overnight, with occasional gusts 35 to 40 mph. Current observations reveal most locations are slowly warming, about 5 degrees higher than daybreak. The forecast calls for highs near 60 with diminished breezes. Rain chances are nil. No updates planned or needed.

Marine
Small Craft Advisory remains in effect for all coastal waters of the Florida Keys. The low level flow between a high pressure system over the eastern United States and a deepening low pressure system northeast of the Bahamas will support strong northerly breezes through the remainder of the morning across the coastal waters of the Florida Keys. Low pressure will exit east of Bermuda tonight and Thursday. A high pressure ridge will then extend from New England down the U.S. eastern seaboard on Thursday. A col in the flow will pass the Keys on Friday, before a cold front pushes through the Keys later Saturday.

NOAA Key West FL Office: Watches - Warnings - Advisories
FL...None. GM...Small Craft Advisory for GMZ031>035-042>044-052>055-072>075.