Monday, April 22, 2013

Brisk Onshore Flow Develops, Damp Perhaps Tonight

East winds will be a bit of a factor over the next couple of days as high pressure over SE Canada pushes winds down the East Coast in concert with low pressure developing off of the Carolina coastline. The low will miss our region in terms of direct impact but it will enhance the onshore flow over the region, which means an increasing east wind over the region later today, lasting through much of tomorrow.

Winds at their peak, this evening into tonight, will be sustained over 20 mph from Philly on east, with gusts to over 30 likely.  The Shore could see gusts to 35 or 40 mph after 6 PM this evening as the best interaction between the coastal low and high pressure will take place.  Those gustier winds will result in the surf being pretty rough along the Jersey and Delaware coastlines.

The east winds will help push moisture onshore and provide us low clouds, drizzle, and showers for tonight and early Tuesday, with the dampest conditions likely at the Shore and along the Delaware coastline.  It does not appear many of those showers or drizzle patches propagate west of I-95 but low clouds may.   Monday night will be a pretty raw night around the region between the wind, drizzle east of the city, and cool temperatures.  Warmer air will gradually push in for Wednesday (as a one day shot of milder air) as the high pulls farther away and the coastal low works up the coast.