Currently, at 500 hPa a longwave trough sits off the East Coast of the United States ahead of longwave ridging over eastern Canada into the Midwest US. The trough is associated with a surface low east of New England which is responsible for the wet and cloudy conditions over Stony Brook today, while the ridge is associated with surface high pressure further inland. Tonight, the 500 hPa ridge will deepen and force the trough further south, resulting in a warm front pushing south into New England. This will bring about 0.1 inches of rain to Stony Brook tonight and strong northerly flow, with a low temperature of around 45F. This weather pattern will continue on Friday with the warm front ultimately passing through Stony Brook early Friday evening. An additional 0.2 inches of rain will fall during the day on Friday; northerly flow will continue and the temperature will remain relatively steady with the high only reaching around 47F.