National Weather Service Mount Holly NJ
642am EDT Fri July 26 2024
Synopsis
High pressure will dominate through the weekend resulting in tranquil and comfortable conditions. High pressure will then slide offshore on Monday bringing the return of the humidity before a low pressure system and cold front approaches the area on Wednesday into Thursday.
Near Term - Through Tonight
Front has cleared the area, and dewpoints are generally much lower than 24 hours ago, with many areas down into the 50s. Some mid and high clouds will linger across southern parts of the area as the front slows to our south, but northern areas look quite sunny today. Dew points will remain in the 50s for most of the area, except 60s southern Delaware/Maryland and coastal NJ, with highs rebounding back into the 80s. Overall close to the best we can hope for at this time of year.
Tonight high pressure will remain, with light winds and clear to partly cloudy skies. Lows in the 50s northwest, 60s elsewhere.
Short Term - Saturday Through Sunday Night
Little changes have been made to the short term period as the upper ridge builds to our west and surface high pressure holds firm influence over the region through the weekend. This will yield temperatures around average with highs in the 80s to around 90 and lows in the 60s to around 70. Skies will be mostly clear throughout, with Sunday featuring a bit more clouds compared to Saturday. Overall, it is shaping up to be a pretty pleasant weekend for late July as humidity levels will be in the comfortable range as dew point temperatures will be limited to the upper 50s to low 60s.
Long Term - Monday Through Thursday
There are two main features that will need to be monitored through the long term period.
First, is a mid-upper trough will stall over the northwest Atlantic and cut-off in the upper flow over the weekend. By Monday, the low will deepen allowing a surface low to develop and retrograde to the northwest back over southern New England. All of the global guidance keeps this low positioned between Montauk and Cape Cod, however NAM guidance is persistent with positioning the low off our coast. Considering this is an outlier compared to other guidance suites, have discounted it at this time. So, for now Monday looks to feature more clouds than sun with a slight chance of a shower near the coast. However, if the position of the low meanders closer to our coastline, more in the way of clouds and showers is certainly plausible.
The second feature is an upper trough that will be approaching from the west around mid-week which ultimately may have a more widespread impact across our region. Although the actual low pressure system and cold front don't look to pass by our region until the Wednesday- Thursday timeframe, showers and storms will be possible beginning as early as Tuesday.
Temps for the long term period will be seasonable for the most part. However, as surface flow becomes more southerly as the position of the high shifts offshore, this will usher in the return of a more humid airmass for much of next week.
Marine
Winds and seas will remain sub-SCA (Small Craft Advisory) thru tonight. Dry conditions expected with northerly winds and a few gusts up to 20 kts this morning, diminishing below 10 kts this afternoon and tonight, while shifting southerly this afternoon and then westerly later tonight.
Outlook... Saturday through Sunday night...No marine headlines expected. Fair weather. Winds will range between 5-15 kt with seas around 2-3 feet.
Monday through Tuesday...No marine headlines expected. A chance of showers and thunderstorms possible. Winds will generally range between 15-20 kt with seas around 3-4 feet.
Rip Currents... Today...North-northeast winds around 5-10 mph will become southerly in the afternoon. Breaking waves around 1-2 feet with a 7-9 second period. This results in a LOW risk for the development of dangerous rip currents for both the Jersey Shore and Delaware Beaches.
Saturday...Similar wind conditions, breaking wave heigheights and swell periods are expected on Saturday. For this reason, have maintained a LOW risk for rip currents for both the Jersey Shore and Delaware Beaches.
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.
