DAYS 1-5 (APRIL 7-11)
The large scale blocking pattern (omega) continues with a slight eastward progression to the set up expected during the next 5 days. Today through Friday the high pressure ridge that makes up the middle of the block will move eastward over New England while the low pressure area that has been doing a cyclonic loop to our east continues to pull away. As this happens, the very dry Canadian air that had come in behind that low Monday and Tuesday will be replaced by air with a little more maritime moisture in it, and this will lead to the advance and development of low level cloudiness that may overtake the sky in much of the region by this afternoon and certain tonight into early Thursday, before it gets eaten away by some drier air and the warming influence of the sun. By Friday, the an extension of surface high pressure should shut off any maritime influx and limit the low cloud potential, so that day should end up clearest of the next 3. The upper pattern continues a slow eastward shift by the weekend, nudging the ridge off the East Coast and allowing the western low pressure trough to approach. It’s still up in the air (figuratively) as to how much impact we see here from the trough and its associated surface low pressure area. For now, introducing the chance of some wet weather for Sunday’s forecast, knowing that it may also be held back from arriving or never make it here at all. So if you are making outdoor plans for the weekend, Saturday is your more guaranteed dry day at this point.
TODAY: Lots of sun followed by lots of clouds. Highs 49-56 coast, 57-64 inland. Wind N to NE up to 10 MPH.
TONIGHT: Mostly cloudy. Lows 38-45. Wind NE up to 10 MPH.
THURSDAY: Lots of clouds followed by partial sun. Highs 49-56 coast, 57-64 inland. Wind NE to E up to 10 MPH.
THURSDAY NIGHT: Partly cloudy. Lows 37-44. Wind calm.
FRIDAY: Sunny. Highs 52-59 coast, 60-67 inland. Wind variable up to 10 MPH with coastal sea breezes developing.
FRIDAY NIGHT: Mostly clear. Interior lower elevation ground for forming. Lows 38-45. Wind variable under 10 MPH.
SATURDAY: Mostly sunny. Highs 53-60 coast, 61-68 inland. Wind variable up to 10 MPH with coastal sea breezes developing.
SATURDAY NIGHT: Increasing clouds. Lows 42-49. Wind SE under 10 MPH.
SUNDAY: Cloudy. Chance of rain. Highs 48-55 coast, 56-63 inland. Wind SE to E 5-15 MPH.
DAYS 6-10 (APRIL 12-16)
What was once the western trough of an omega block will likely become the eastern trough of a newly formed omega block during this period and will be over or just east of the East Coast during this period. For us this means no big warm ups but also not that cold, and somewhat unsettled weather, but not likely any big storms either – again fairly typical blocky springtime set-up. Can’t really determine day-to-day details this far out with that kind of pattern.
DAYS 11-15 (APRIL 17-21)
Only very little change to the overall pattern at most, with possibly a slow eastward drift to the overall set-up again, which may put our area back under a high pressure ridge with more dry weather, cool nights, cool coast & warm inland days. Not high confidence on this forecast though.