Ship john shoal
NDBC buoy sjsn4
Observed , 41 minutes ago
Hazardous
Gale Warning in effect. Moderate NE winds at 16 kn gusting to 19 kn. Water 73°F, air 63°F. Next low tide at 3:01 AM (1 ft). Tonight: NE Winds 25 To 30 Kt With Gusts Up To 40 Kt, Diminishing To 20 To 25 Kt With Gusts Up To 35 Kt Late This Evening And Overnight.
It tells you it is rough now. The app tells you before it gets rough, with alerts at the wind and wave limits you set.
Get Buoycast for iPhoneGale Warning
Gale Warning issued September 23 at 2:27PM EDT until September 24 at 6:00AM EDT by NWS Mount Holly NJ
* WHAT...Northeast winds 20 to 30 kt with gusts up to 40 kt and very rough waters expected. * WHERE...Delaware Bay waters north of East Point NJ to Slaughter Beach DE. * WHEN...Until 6 AM EDT Thursday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.
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Get Buoycast for iPhoneWind
Speed
16kn
Gust
19kn
Direction
50° NE
Trend
Easing
Last 11 hours14 to 27 kn
Air temp
63°F
58 to 67°F today
Water temp
73°F
73 to 73°F today
Pressure
1029mbar
Tendency
Rising
3 hour change
+0.5 mbar
Last 11 hours1028 to 1029 mbar
Tides
Next high
8:29 PM
6.3 ft
Then low
3:01 AM
0.7 ft
Predicted, Ship John Shoal0.7 to 6.3 ft
Zone forecast
Tonight
NE Winds 25 To 30 Kt With Gusts Up To 40 Kt, Diminishing To 20 To 25 Kt With Gusts Up To 35 Kt Late This Evening And Overnight. Seas 3 To 5 Ft. Wave Detail: NE 4 Ft At 4 Seconds.
Thu
NE Winds 20 To 25 Kt With Gusts Up To 30 Kt. Seas 2 To 4 Ft. Wave Detail: NE 3 Ft At 4 Seconds.
Thu Night
NE Winds 20 To 25 Kt, Becoming N 15 To 20 Kt After Midnight. Seas 2 To 3 Ft. Wave Detail: NE 3 Ft At 4 Seconds.
Synopsis
Low pressure developing off the North Carolina coast and high pressure located north of the region will keep persistent Northeast winds in place through the weekend. The low looks to make its closest approach to the region later Friday or early Saturday.
NWS zone Delaware Bay waters north of East Point NJ to Slaughter Beach DE
Last 24 hours
Every 3 hours, over the last 12 hours. Air 58 to 67°F, pressure 1,028 to 1,029 mbar over the same window.
4 stations within 30 NM
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Get Buoycast for iPhoneCommon questions
How often does buoy sjsn4 report?
Wind, temperature and pressure update about every 10 minutes.
Can I be notified when conditions change at buoy sjsn4?
Buoycast Pro lets you set your own limits on wind, waves or pressure and sends a threshold notification when this buoy crosses them.
Does this page show NOAA warnings for this area?
Watches, warnings, and advisories for Delaware Bay waters north of East Point NJ to Slaughter Beach DE appear alongside the conditions, here and in the app. Pro also pushes NOAA watches, warnings, and advisories when they are issued.
Can I see the forecast against what buoy sjsn4 measured?
This page shows measurements only. Buoycast Pro charts the NOAA forecast against them so you can see where the two diverge.
Can I keep buoy sjsn4 for next time?
Save it as a favorite and Buoycast opens on the buoys you run.
What this buoy measures
This buoy is not reporting waves. Conditions above come from the sensors it does carry, and the forecast, tides and sun times on this page are regional rather than measured at the buoy.
Station sjsn4
39°18'18" N 75°22'37" W · owned and maintained by NOAA NOS PORTS
Measured on the water by 1,000+ NOAA buoys. Observations from the National Data Buoy Center, forecasts and advisories from the National Weather Service. Not for navigation.