Cape May NJ to Cape Henlopen DE out 20 nm Marine Forecast
| Today...Nw Winds 20 To 25 Kt With Gusts Up To 30 Kt. Seas 3 To 5 Ft. Wave Detail: Nw 5 Ft At 4 Seconds And E 2 Ft At 12 Seconds. Light Freezing Spray This Morning. |
| Tonight...Nw Winds 25 To 30 Kt With Gusts Up To 40 Kt. Seas 3 To 5 Ft. Wave Detail: Nw 5 Ft At 5 Seconds And E 2 Ft At 12 Seconds. Freezing Spray After Midnight. |
| Wed...Nw Winds 20 To 25 Kt With Gusts Up To 30 Kt. Seas 3 To 5 Ft. Wave Detail: Nw 5 Ft At 5 Seconds And E 1 Foot At 11 Seconds. Freezing Spray In The Morning. |
| Wed Night...Nw Winds 15 To 20 Kt With Gusts Up To 25 Kt. Seas 2 To 4 Ft. Wave Detail: Nw 4 Ft At 5 Seconds And E 1 Foot At 11 Seconds. |
| Thu...W Winds 10 To 15 Kt With Gusts Up To 20 Kt. Seas 2 To 3 Ft. Wave Detail: Nw 3 Ft At 4 Seconds And Ne 1 Foot At 7 Seconds. |
| Thu Night...W Winds Around 15 Kt With Gusts Up To 25 Kt. Seas Around 2 Ft. Wave Detail: W 2 Ft At 4 Seconds And E 1 Foot At 8 Seconds. |
| Fri...W Winds 10 To 15 Kt. Seas Around 2 Ft. |
| Fri Night...Sw Winds 10 To 15 Kt. Seas Around 2 Ft. |
| Sat...Sw Winds 10 To 15 Kt. Seas 2 To 3 Ft. A Chance Of Showers In The Morning, Then Showers Likely In The Afternoon. |
| Sat Night...Sw Winds 10 To 15 Kt, Becoming Nw After Midnight. Seas 2 To 4 Ft. A Chance Of Showers. |
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Area Forecast Discussion National Weather Service Mount Holly NJ 642am EST Tuesday Jan 14 2025 Synopsis Cold and dry arctic high pressure will remain in place to our west through the middle of the week, keeping below normal temperatures and dry conditions in place. A weak cold front will pass through on Thursday. A warm front will lift north on Saturday, bringing a shot of widespread precipitation. A strong arctic cold front will pass through early Sunday, with much colder conditions expected into next week. Near Term - Through Tonight The main story of theNear Term - Rest Of Today Through Tonight cast remains the cold Canadian high pressure that is beginning to slow inch its way towards the Mid-Atlantic region out of the High Plains. Temperatures this morning have been a touch warmer than previously forecast so have made some minor adjustments. However, as we head into the daytime hours, temps will struggle to reach the freezing mark with many locations topping out in the upper 20s to low 30s for highs under partly to mostly cloudy skies with another stratocumulus deck developing by late afternoon. A shortwave aloft will also be passing through in the evening, which could result in a few snow showers. Latest CAM guidance is a bit less optimistic on how far south the snow showers make it so, have largely confined the mention of the slight chance (15-20%) for snow showers to near and north of the I-80 corridor. In any case, no significant accumulations are expected. In addition to the cold temps, a modest pressure gradient will setup over the region. So, today will be quite breezy with wind gusts up to 30-35 mph possible. This should result in wind chills remaining in the teens for this afternoon. Heading into tonight, the pressure gradient over the region continues to strengthen with model soundings indicating only a weak inversion developing. As a result, gusty conditions are expected to continue into the overnight hours, with wind gusts around 25-30 mph possible. Temps look to fall into the upper teens across most of the region, under clearing skies following the departure of the passing wave. Adding in the winds will result in single digit wind chills for many locations (feeling up to 5 degrees below zero in the Poconos). Short Term - Wednesday Through Thursday Night For the midweek period Wednesday through Thursday night, the cold advection of an artic airmass will begin to wane as high pressure across the Ohio Valley weakens. By Thursday, another trough axis arrives from the northwest, keeping heigheights and thicknesses anomalously low. This will keep temperatures below normal despite the lack of cold advection. A weak cold front will pass through late Thursday associated with the passing upper trough. Generally expect dry conditions through this period. A few light snow showers or flurries are possible with the trough and frontal passage late Thursday mainly northwest of I-95, but this won't amount to much other than potentially a dusting in the Poconos. Remaining breezy on Wednesday with a northwest wind 10-20 mph, and gusts up to 30 mph. Winds lessening and shifting southwest for Thursday. Diurnal stratocumulus possible each day, especially Thursday as some better low level moisture will be present in the southwest flow. Long Term - Friday Through Monday For the long term period Friday into early next week, expecting a rebound of temperatures to near or even slightly above normal into the weekend as heigheights increase aloft and an upper ridge axis passes across the region Friday night. A warm front should lift north through the area on Saturday, with south to southwest flow and warm advection pushing temperatures into the low to mid 40s across much of the area. While the mild temperatures will provide brief reprieve from the prolonged frigid temperatures, the milder weather will be accompanied by periods of rain showers, especially by Saturday afternoon. Any precipitation will diminish into late Saturday night. A strong arctic front is expected to arrive sometime Sunday, with a much colder airmass advecting in behind it. Some guidance suggests potential for a coastal system late Sunday into early Monday, although much of the latest guidance is much more suppressed with this, keeping the system well offshore at our latitude. Have maintained chance Probability of Precipitation at this time, but suspect these will need to be lowered or removed in future updates if the current trends hold. By Monday night into Tuesday, the coldest airmass of the season is expected to be in place across a large portion of the CONUS from the Midwest eastward across much of the Northeast. 850 mb temperatures in the -20C to -25C range will likely spell temperatures upwards of 15 to 20 degrees below normal through the middle of next week. This would mean highs near 20 degrees and lows into the single digits. A period of a few days of well below freezing temperatures could lead to some cold weather impacts to infrastructure, including freezing water pipes and high demand for heating energy. Marine A Small Craft Advisory is in effect for all Atlantic coastal waters including the Delaware Bay through today. A Gale Warning is in effect for all Atlantic coastal waters including the Delaware Bay tonight. A Freezing Spray Advisory has also been issued for all Atlantic coastal waters including the Delaware Bay for tonight. West-northwest winds around 15-25 kt with gusts up to 30 kt are expected through the day today with seas around 4-6 feet. Due to the combination of cold air/water temperatures, gusty winds and enhanced seas, light freezing spray will be likely on both the Atlantic coastal waters and Delaware Bay this morning. Heading into tonight, winds will turn more northwesterly and increase to 20-30 kts with gusts up to 35-40 kts. Seas of 4-6 feet continue. Due to the increasing winds and decreasing air temperatures, along with continued enhanced seas and cold water temperatures, freezing spray accumulation is expected to increase to moderate. Thus, the Freezing Spray Advisory was issued for all coastal waters. Outlook... Wednesday...Small Craft Advisory conditions with northwest winds 15-20 kts gusting up to 30 kts. Freezing spray possible early. Wednesday night through Saturday...No marine hazards expected. Winds 10-15 kts with gusts up to 20 kts possible at times. Seas mostly 1-3 feet. Rain showers developing late Saturday. NOAA Mount Holly NJ Office: Watches - Warnings - Advisories PA...None. NJ...None. DE...None. MD...None. Marine Small Craft Advisory until 6pm EST this evening for ANZ430- 431-450>455. Gale Warning from 6pm this evening to 6am EST Wednesday for ANZ430-431-450>455. Freezing Spray Advisory from 8pm this evening to 1pm EST Wednesday for ANZ430-431-450>455. |
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