Monday, August 15, 2011

Low pressure slides east today. Skies gradually dry out overnight. High pressure allows for more sunshine & drier conditions Tuesday & Wednesday. Weak low pressure brings chance for rain Thursday & Friday. High pressure with plenty of sunshine is on tap for this weekend!

Upper level low pressure system gradually shifts east more slowly than expected today. This leaves the Mid-Atlantic states & northeastern US vulnerable for a few scattered rain showers & an isolated thunderstorm this afternoon & evening. Skies will stay mostly cloudy during the day, gradually clearing overnight as high pressure slowly slides east. Temperatures today will stay in the mid 70s then fall to around 60 tonight as our cloud cover clears out.

Some patchy morning fog is expected Tuesday. Otherwise, high pressure will gain control over the Great Lakes region, allowing for much clearer skies during the day Tuesday. With more sunshine on tap during the day, temperatures will reach a few degrees warmer than today. Highs will reach around 80. Forecast will stay dry with clear skies Tuesday night. Temps will fall into the low/mid 50s. Widespread fog will develop into Wednesday morning.

Dry Wednesday with lots of sunshine. Warmer air will be lifting north during the day Wednesday. Highs will be in the mid 80s. Weak low pressure will cross the Great Lakes, dragging a line of showers & storms across the eastern US during the day Thursday. Threat for rain & isolated storms will continue through Friday. However, dynamics with this Thursday/Friday system are weak and unimpressive. We'll keep just chance periodic rain showers.

 High pressure will dry things out & provide more sunshine for the last 'unofficial' weekend of summer, before classes ramp up.