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Weather with Bill Evans

Happy Wednesday! A weak warm front lifts north of the area this morning, followed by a shortwave trough approaching from the west in the afternoon. With better upper level support, shower and thunderstorm chances will increase Wednesday morning into Wednesday afternoon, especially for areas from New York City north and west. Convection is then expected to diminish after sunset as the shortwave pushes east, allowing ridging to build in aloft for Wednesday night. With the exception of the immediate south-facing coastlines, temperatures on Wednesday are expected to rise into the mid to upper 80s area wide. Combined with dewpoints around 70, this should produce heat index values in the upper 80s to lower 90s across much of the area, with a few locations across portions of northeast New Jersey possibly seeing heat index values touch the mid 90s. Overnight lows will provide little relief, only falling into the upper 60s to lower 70s. A moderate rip current risk is expected again on Wednesday due to relatively long period SE-S swell of 3 ft and S flow 10-15 kt. && .LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/... High pressure builds briefly on Thursday. Temperatures on Thursday are forecast to rise to the upper 80s and lower 90s. Heat index values should reach the mid and upper 90s across the interior and the lower 90s elsewhere. There is the potential for some isolated to widely sct showers/tstms off higher terrain and perhaps sea breeze boundaries anticipated in an unstable, but capped and weakly sheared environment Thursday afternoon and evening. There is a moderate risk for rip current development at Atlantic Ocean beaches on Thursday as long period southerly swell continues. Low pressure moves up the Mid Atlantic coast on Friday, passing over the region Friday night into Saturday morning. Showers and thunderstorms are possible, especially Friday afternoon and evening likely just north east of the sfc low as it taps into a warm conveyor belt of Gulf and subtropical Atlantic moisture. Still low confidence on location of this heavy rain potential, as well as potential for breezy conditions on the east side of the low, as a potential 30-40 kt LLJ develops. An upper-level trough and its associated cold front will move into the area Saturday, resulting in hot and humid conditions and the increase chance for showers and thunderstorms on Saturday and Sunday. The cold front will move off to the east Monday, but the upper-level trough will remain overhead bringing a potential for diurnal convection as well as a gradual trend to a more seasonable airmass through early next week. .MARINE...Boating... Sub-SCA conditions are expected on all waters through Wednesday night with winds generally remaining below 20 kt and ocean seas 3-4 feet. SCA seas are likely Friday and into early next week with a persistent S/SW flow and strengthening wind fields owing to a possible coastal low nearing the region.
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