Marine Weather for AM 742

Active Advisory: (US Severe Weather)
Forecast as of 5:18 am AST on September 21, 2017
Small Craft Advisory in effect until 2 PM AST this afternoon
Coastal Waters Of Northwestern Puerto Rico Out 10 Nm-
Today
South winds around 30 knots. Seas 16 to 18 feet with occasional seas up to 22 feet subsiding to 10 to 12 feet with occasional seas up to 15 feet in the afternoon. Dominant period 10 seconds. Northwest swell 4 to 8 feet. Showers and isolated thunderstorms.
Tonight
South winds 15 to 20 knots. Seas 8 to 10 feet with occasional seas up to 11 feet. Dominant period 10 seconds. Northwest swell 4 to 8 feet. Numerous showers and isolated thunderstorms.
Friday
South winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 7 seconds. Northwest swell 4 to 6 feet. Scattered showers and isolated thunderstorms.
Friday Night
South winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 7 seconds. Isolated showers.
Saturday
Southeast winds 10 to 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 7 seconds. Northwest swell 4 to 5 feet. Isolated thunderstorms. Scattered showers.
Sunday
Southeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Northwest swell 4 to 5 feet. Isolated showers.
Monday
Southeast winds 5 to 10 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Northwest swell 4 to 6 feet. Scattered showers.

Watches & Warnings

Small Craft Advisory
Issued: 5:23 AM AST Sep. 21, 2017 – National Weather Service

... Small Craft Advisory in effect until 2 PM AST this afternoon...
... Hurricane Warning is cancelled...

The National Weather Service in San Juan has issued a Small Craft
Advisory, which is in effect until 2 PM AST this afternoon. The
Hurricane Warning has been cancelled.

* Winds... southerly 20 to 30 knots, gradually decreasing this
afternoon.

* Waves/seas... seas 16 to 18 feet subsiding to 10 to 12 feet this
afternoon.

Precautionary/preparedness actions...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
are expected to produce hazardous wave conditions to small craft.
Inexperienced mariners... especially those operating smaller
vessels should avoid navigating in these conditions.






Hurricane Warning
Issued: National Weather Service

...Hurricane Warning In Effect...

.REST OF TONIGHT... Southeast winds 30 to 40 knots. Seas 18 to 20
feet with occasional seas up to 24 feet. Dominant Period 10
seconds. Northwest swell 4 to 8 feet. Widespread showers.
Scattered showers in the afternoon.
.FRIDAY... South winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 7 seconds. Northwest
swell 4 to 6 Feet. Isolated showers through the day.
.FRIDAY NIGHT... Southeast winds 15 to 20 knots. Seas 5 to 7 feet
with occasional seas up to 9 feet. Dominant Period 7 seconds.
.SATURDAY... Southeast winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 7 seconds. Scattered
showers.
.SATURDAY NIGHT... Southeast winds 10 to 15 knots. Seas 5 to 7 feet
with occasional seas up to 9 feet. Dominant Period 7 seconds.
Scattered showers.
.SUNDAY... Southeast winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Isolated
showers.
.MONDAY... Southeast winds 5 to 10 knots. Seas 1 foot or less.
Dominant Period 7 seconds. Scattered showers.
.TUESDAY... Southeast winds 5 to 10 knots. Seas 1 foot or less.
Dominant Period 7 seconds. Scattered showers.

... HURRICANE WARNING IN EFFECT...
.REST OF TONIGHT... Southeast winds 30 to 40 knots. Seas 18 to 20
feet with occasional seas up to 24 feet. Dominant Period 10
seconds. Northwest swell 4 to 8 feet. Widespread showers.
Scattered showers in the afternoon.
.FRIDAY... South winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 7 seconds. Northwest
swell 4 to 6 Feet. Isolated showers through the day.
.FRIDAY NIGHT... Southeast winds 15 to 20 knots. Seas 5 to 7 feet
with occasional seas up to 9 feet. Dominant Period 7 seconds.
.SATURDAY... Southeast winds 15 to 20 knots. Seas 5 to 7 feet with
occasional seas up to 9 feet. Dominant Period 7 seconds. Scattered
showers.
.SATURDAY NIGHT... Southeast winds 10 to 15 knots. Seas 5 to 7 feet
with occasional seas up to 9 feet. Dominant Period 7 seconds.
Scattered showers.
.SUNDAY... Southeast winds 10 to 15 knots. Seas 4 to 6 feet with
occasional seas up to 8 feet. Dominant Period 7 seconds. Isolated
showers.
.MONDAY... Southeast winds 5 to 10 knots. Seas 1 foot or less.
Dominant Period 7 seconds. Scattered showers.
.TUESDAY... Southeast winds 5 to 10 knots. Seas 1 foot or less.
Dominant Period 7 seconds. Scattered showers.

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Coastal Water Temperatures

Place Temperature
Magueyes Islands, PR 84.0 °F
Mona Island, PR 82.0 °F
Arecibo, PR 77.0 °F

Open Sea Buoy Information

Place ID Sea Temp Wave Height
Southeast of Ponce, PR 42085 83 °F
-
San Juan, PR 41053
-
-
Click the Station ID for daily observations and history.

Tide Heights

2017-09-21 2017-09-22
3 AM 9 AM 3 PM 9 PM 3 AM 9 AM 3 PM 9 PM

Tide Information

Date Time Tide Type Height
Aguadilla, Crashboat Beach, Puerto Rico:  
2017-09-21 02:53 AM AST Low Tide 0.02
2017-09-21 09:00 AM AST High Tide 1.27
2017-09-21 03:17 PM AST Low Tide 0.00
2017-09-21 09:19 PM AST High Tide 1.19
2017-09-22 03:30 AM AST Low Tide 0.01
2017-09-22 09:42 AM AST High Tide 1.31
Mayaguez, Puerto Rico:  
2017-09-21 03:26 AM AST Low Tide 0.19
2017-09-21 09:28 AM AST High Tide 1.37
2017-09-21 03:48 PM AST Low Tide 0.20
2017-09-21 09:46 PM AST High Tide 1.30
2017-09-22 04:01 AM AST Low Tide 0.19
2017-09-22 10:15 AM AST High Tide 1.38
Puerto Real, Puerto Rico:  
2017-09-21 03:29 AM AST Low Tide 0.45
2017-09-21 08:48 AM AST High Tide 0.88
2017-09-21 03:36 PM AST Low Tide 0.46
2017-09-21 08:52 PM AST High Tide 0.89
2017-09-22 03:58 AM AST Low Tide 0.43
2017-09-22 09:40 AM AST High Tide 0.90

Currents Information

Date Time Current Type Speed
Punta Ostiones, 1.5 miles west of, Puerto Rico Current:  
2017-09-21 02:24 AM AST Slack, Ebb Begins -0.00 knots
2017-09-21 05:02 AM AST Max Ebb -0.93 knots
2017-09-21 08:17 AM AST Slack, Flood Begins 0.00 knots
2017-09-21 10:59 AM AST Max Flood 1.25 knots
2017-09-21 02:54 PM AST Slack, Ebb Begins -0.00 knots
2017-09-21 05:36 PM AST Max Ebb -1.00 knots
2017-09-21 09:04 PM AST Slack, Flood Begins 0.00 knots
2017-09-21 11:28 PM AST Max Flood 1.01 knots
2017-09-22 03:09 AM AST Slack, Ebb Begins -0.00 knots
2017-09-22 05:44 AM AST Max Ebb -0.87 knots
2017-09-22 08:54 AM AST Slack, Flood Begins 0.00 knots
2017-09-22 11:40 AM AST Max Flood 1.26 knots