![]() It might not be impossible for some lake effect clouds and perhaps a shower or two to reach Carbon or Monroe Counties in PA around Wednesday, but we do not have anything forecast at this point. Otherwise conditions in our region look increasingly dry and stable through the end of the week and next weekend, as surface high pressure eventually sets up over the Mid-Atlantic and the Northeast. Spokes of vorticity with shortwaves rotating around the upper low will help drive lake effect precipitation to the lee of the Great Lakes. Cold upper-level low pressure will drift eastward across southeastern Ontario and upstate NY on Wednesday before lifting out across Quebec Thursday and Friday. Lows will drop below 40 degrees away from the coast and the urban corridor, with possibly sub- freezing temps in the Poconos. Just some very light, spotty shower activity will be possible with the main frontal passage Monday evening, followed by clearing skies by Tuesday morning. The greater impact from this storm system will occur as a cold front pushes eastward ahead of cold upper-level low pressure plunging across the Great Lakes on Monday. All this will make for an unsettled but not too inclement day on Monday, with just a light west- southwest breeze. The initial trough will pass offshore Monday morning, putting an end to all but some lingering spotty showers, mainly toward the NJ/DE coast. Higher amounts are possible toward southern Delaware, while portions of the Lehigh Valley northwestward may escape with a few hundredths.Ĭlouds and light southerly breezes will result in a milder Sunday night, and temperatures on Monday may only be a few degrees lower than over the weekend, despite fairly extensive clouds. The bulk of the precipitation will focus on Sunday night, with just a tenth to a third of an inch of rainfall. As the flow backs to more southerly ahead of the trough, some isentropic lift along with weak instability with broader height falls will help drive some shower activity northeastward across our region. A weak area of low pressure will track east-northeastward across North Carolina and off the coast of the Delmarva Sunday night, in association with a broader surface trough extending southeastward from the Great Lakes. ![]() Clouds will increase quickly from south to north on Sunday night. SHORT TERM /SUNDAY NIGHT THROUGH MONDAY NIGHT/. Highs will range from the upper 50s across the far NW to the lower 70s across southern DE. Temperatures tomorrow will also be around normal. Lows tonight will hover around normal for this time of year, that is in the upper 30s to around 40 across the far NW, the lower to mid 40s across the Lehigh Valley and NW NJ, and in the upper 40s to lower 50s elsewhere. So any precipitation associated with the approaching cold front Sunday night is expected after sunset. Deterministic models and ensemble means keep rain chances very low Sunday. Another cold front should be working towards the forecast area later in the day.Īlthough weak high pressure will be in place Sunday, scattered mid- and high- level clouds are again expected. Weak surface high pressure will prevail on Sunday. The embedded shortwave trough, responsible for the front's progress earlier today has pivoted northeast away from the region. Otherwise, in the mid levels the trough over the Great Lakes and northeastern U.S. Made some tweaks to the hourly temperature, dew point and wind grids based on the latest observations and trends. As of 100 AM, no significant changes as a weak cold front continues to shift eastward across our region. Colder temperatures and dry weather is expected for the remainder of the week as high pressure gradually builds in. A strong upper level trough will begin to approach with showers late Sunday night and Monday, then a cold front pushes through by Monday night with little in the way of additional showers. Seas 2 to 3 ft.Īrea Discussion for - Philadelphia/Mount Holly, PA (on/off) Help NOTE: mouseover dotted underlined text for definitionĪrea Forecast Discussion National Weather Service Mount Holly NJ 103 AM EDT Sun Oct 16 2022 NW swell around 2 ft at 3 seconds in the evening. E swell around 2 ft at 8 seconds, becoming N 2 to 4 ft at 6 seconds after midnight. Mon night.SW winds 10 to 15 kt, becoming nw after midnight. Mon.SW winds 15 to 20 kt with gusts up to 25 kt. Sun night.SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 20 kt after midnight. Sun.W winds 5 to 10 kt, becoming sw in the afternoon. ANZ451 Coastal Waters From Manasquan Inlet To Little Egg Inlet Nj Out 20 Nm- 1245 Am Edt Sun Oct 16 2022
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