Sandy Hook to Manasquan Inlet NJ out 20 NM Marine Forecast
| Tonight...Ne Winds 5 To 10 Kt. Seas 2 To 3 Ft. Wave Detail: E 3 Ft At 7 Seconds And S 1 Foot At 5 Seconds. |
| Sat...E Winds Around 5 Kt. Seas 2 To 3 Ft. Wave Detail: E 3 Ft At 7 Seconds And S 1 Foot At 5 Seconds. A Chance Of Showers. |
| Sat Night...E Winds 5 To 10 Kt. Seas 2 To 3 Ft. Wave Detail: Se 2 Ft At 4 Seconds And Se 1 Foot At 8 Seconds. A Chance Of Showers And Tstms In The Evening, Then Showers Likely With A Chance Of Tstms After Midnight. |
| Sun...Sw Winds 5 To 10 Kt. Seas 2 To 3 Ft. Wave Detail: Se 1 Foot At 5 Seconds And E 1 Foot At 8 Seconds. A Chance Of Showers And Tstms In The Morning, Then A Chance Of Showers In The Afternoon. |
| Sun Night...W Winds 5 To 10 Kt. Seas 2 To 3 Ft. Wave Detail: S 2 Ft At 5 Seconds And E 1 Foot At 8 Seconds. A Chance Of Showers In The Evening. |
| Mon...W Winds 5 To 10 Kt. Seas 2 To 3 Ft. Wave Detail: Se 2 Ft At 7 Seconds And Se 1 Foot At 12 Seconds. |
| Mon Night...W Winds 5 To 10 Kt. Seas 2 To 3 Ft. |
| Tue...W Winds 5 To 10 Kt. Seas Around 2 Ft. |
| Tue Night...W Winds 5 To 10 Kt. Seas Around 2 Ft. |
| Wed...Sw Winds Around 5 Kt, Becoming S In The Afternoon. Seas Around 2 Ft. |
| Wed Night...S Winds 5 To 10 Kt. Seas 2 To 3 Ft. A Chance Of Showers After Midnight. Winds And Seas Higher In And Near Tstms. |
| Area Forecast Discussion National Weather Service Mount Holly NJ 243pm EDT Fri August 21 2026 .WHAT HAS CHANGED... While the threat for flash flooding on later Saturday and into Sunday remains, it appears to be lesser now. Heavier rains look to be focused on Delmarva and coastal south NJ. .KEY MESSAGES... 1. A period of unsettled conditions for Saturday and Saturday night with the possibility for some flooding. Unsettled weather continues through early Sunday. 2. Fair weather is expected to return Monday and should last into the middle of next week. KEY MESSAGE 1... A period of unsettled conditions for Saturday and Saturday night with the possibility for some flooding. Unsettled weather continues through early Sunday. The upper H5 trough will remain across the East Coast Saturday and Sunday before lifting away and weakening. There are still a few short waves which will move NE across the Middle Atlantic. There are two favored period for the rains, one is Sat. morning and the second Sat evening and early overnight. These waves will bring increased chances for showers and a few thunderstorms thru the period. Higher chances for rains are across Delmarva and south NJ with categorical/likely probability of precipitation and chance/slight chance probability of precipitation will be across the N/w areas Saturday. probability of precipitation for all areas are in the 50% to 60% range for Saturday evening and then they decrease overnight. Patchy fog will develop overnight. One notable change from yesterday is that the systems appear to be showing the higher Quantitative Precipitation Forecast totals 'out to sea' . The higher totals are now in the 1.0 to 1.5 inch range and will be across the NJ shore areas. Delmarva may also have some totals around an inch thru that period. A few of the CAMs show that a few isolated spots may have close to 2.0 inch totals. We'll continue to monitor these trends. KEY MESSAGE 2...Fair weather is expected to return Monday and should last into the middle of next week. More zonal flow with some subtle ridging moves in for the first half of the week. At the surface, high pressure will mainly be in control, resulting in dry and tranquil weather through Wednesday. Temperatures should be seasonable through this stretch. Marine Conditions will remain below SCA (Small Craft Advisory) levels tonight and Saturday. Winds will be onshore 5 to 10 knots much of the time and seas on the ocean will average 2 to 3 ft. Fair weather tonight and then showers and a few thunderstorms are expected Saturday. There are both greater chances for rains and thunder across the southern NJ waters and DE/DE Bay waters too. Outlook... Saturday night through Tuesday...No marine headlines expected. Widespread showers and thunderstorms expected on the waters Saturday night then only a chance for showers Sunday. Rip Currents... Rest of today, a MODERATE Risk for rip currents is in place for Ocean and Monmouth County, where north/northeast winds around 10 to 20 MPH are expected with breaking waves around 2 to 3 feet. An onshore swell with a dominant period of 9 seconds will also add to the rip current risk. For the southern NJ shore and Delaware Beaches, winds will be a bit less with slightly lower breaking waves. This will result in a LOW risk for rip currents in these locations. For Saturday...onshore winds around 10 MPH and multiple swell groups (one of which has a 12 to 14 second period) will result in a MODERATE risk for rip currents at the Jersey Shore. Breaking waves will also be around 2 to 3 feet. For the Delaware Beaches, winds should be lower with lower breaking waves, resulting in a LOW risk for rip currents. For specific beach forecasts, visit weather.gov/beach/phi NOAA Mount Holly NJ Office: Watches - Warnings - Advisories PA...None. NJ...None. DE...None. MD...None. Marine None. |
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