With high pressure located off the northeast coast, our area has been experiencing northeasterly flow causing cold air to dam up against the mountains.  This will ensure a cooler day today with highs only around 50 degrees.  Southwesterly flow aloft around 3000 feet off the ground will allow for the continued lift and "overrunning" to make for overcast conditions throughout the day.  Light drizzle will also help temperatures remain cool throughout the day today as highs are now only expected to reach the 50 degree mark, with some light warming overnight.

Winds will eventually turn to southerly overnight as a warm front moves to our north as the high pressure moves further to the east, making for a southerly return flow across the eastern seaboard and washing out the CAD (Cold Air Damming) at the surface.  Lows should remain steady overnight, and stronger southerly flow Tuesday will allow for warmer temperatures approaching the mid to upper 60s by the afternoon.  Showers will continue to be possible with the best chance in the afternoon hours as the cold front moves through.

Temperatures should cool slightly for Wednesday as the cold front moves to the east of the region.  Highs are only expected to reach the upper 50s to near 60 degrees, which is just about normal for this time of year.  The next chance for rainfall appears to be at the end of the week as an area of low pressure sinks out of the southern Rockies and moves eastward over the DC area Thursday night and into Friday.

Looking ahead to next weekend, another area of low pressure develops along the frontal axis and appears to give us a chance for rainfall Sunday as the low moves up the east coast.  This will have the possibility to affect the 10,000 runners in the Cherry Blossom 10 Miler which I will be running, so I will keep all of you posted on that!  Hopefully we'll see a shift in the pattern by then so don't count on it being a washout at this point.