[Offline]
Posted: (April 29, 2008 01:17 pm)
A few notes to begin:
- Patchy valley frost possible in the Susquehanna Valley overnight tonight.
- Windy today, breezy tomorrow
- CAA (cold air advection) at lower levels + WAA (warm air advection) at upper layers = Stable through Wednesday night
- Position of the warm front for Friday = Bust potential
Synopsis:
After a good bit of rain for the Mid Atlantic region yesterday, clouds are finally breaking but temperatures don't really have that far to go up. In Lancaster, the high is expected to be around 58 degrees, which is 10 degrees below seasonable. This same afternoon high applies for Philly and south of the Mason-Dixon line temperatures are expected to jump into the low 60's in the DC area. To go along with these unseasonably cool temperatures, there's also windy conditions in the Mid Atlantic region, with wind speeds ranging in the 16 - 20 mph range over much of the area.
Overnight, as we will continue to stabilize, we will continue to see clear skies and the winds will decrease. This will allow temperatures to bottom out in the mid to upper 30's for much of the region with possible valley frost heading out towards the Susquehanna Valley.
Tomorrow will feature mostly sunny skies with a few cumulus clouds developing in the afternoon with high temperatures very similar to those of today. Tomorrow night is when things will start to get interesting, as clouds will begin to build into the region overnight Wednesday and allowing for periods of showers and drizzle for Thursday. This can be attributed to a slow-moving warm front that will be approaching the region from the south.
During this time, the Mid Atlantic region may be split into two areas of distinctly different weather. The position of the sluggishly moving warm front will serve as a boundary as to who will remain to the north of the warm front and those south of the warm front though the early weekend. Those north of the warm front will continue to see clouds and precipitation through the early weekend, and those south of it will break out into sunshine and see warm temperatures and nice conditions during that time-frame. As of right now, I believe that warm front will remain draped through the midway part of Maryland, meaning a continued chance of showers for the majority of the Middle Atlantic region.
Keep looking at other blogs as the Thursday-Friday time period approaches as things are sure to change.
But as for right now... GO FLYERS ! !
