Discussion:
Saturday PM: 11/22/08
The Unseasonably Cold weather will continue into this week, as another strong Cold front moves through Monday night. An Upper level Trough (H5 Low) settles over the Northeast and M/A States for much of the week, causing unsettled/Windy conditions for Monday Night through Thanksgiving Day.
This past week has brought a touch of winter weather to the Delaware Valley, and M/A States, with Average temperatures, that of January levels. Flurries/Snow Showers and some LES Snow bands, overspread the area for much of the week. Here in SJ, I recorded 5 days with at least a Trace of snow, and 0.5" on Friday AM.
On Friday AM many areas received 1/2" to as much as 4.5" over parts of Extreme SE PA. Philadelphia came in with 1.0" of snow and the last time this occurred was in November of 1995. So overall, an Unseasonably cold week and an early taste of winter.
Sunday: Mainly sunny but it continues cold, as highs reach the Upper 30's to lower 40's. Some afternoon High cloudiness streaks in from the SW.
Sunday night: Fair and Cold with lows in the mid to upper 20's
As we head into this week, I expect temperature to remain Below average, but slightly milder than last week. On Monday a brief surge of milder air will work in ahead of our approaching cold front from the Midwest and Ohio Valley. Temperatures will be near 50 Degrees (Which is still below normal) as clouds increase and thicken during the morning hours. By Monday afternoon some rain will be moving into areas west of PHL (LNS/RDG) then spread into PHL and areas east in NJ and DE towards evening. I expect some light to moderate rain for Monday night and windy conditions as the cold front moves through late at night. A few areas south of PHL could get a gusty thunderstorm with the frontal passage.
Later Monday Night into Tuesday AM, could be tricky as a coastal low develops off the Northen M/A Coast. If enough cold air works in quick enough, and the coastal low deepens and becomes stronger than expected, a changeover to wet snow is possible. Some areas could see a Coating to perhaps a couple inches of snow, Mainly North and West of PHL and into the Lehigh Valley during this time.
Tuesday:
We can expect mainly Cloudy skies and some showers mixed with wet snow, especially North and West of PHL as the colder air begins to move in. Highs will be 40 to 45 and winds shift to the N and NW at 15 to 30 MPH and gusty.
Tuesday Night and Wednesday:
Mostly Cloudy and windy conditions with Rain and Snow Showers for the entire region. Lows Tuesday night will be in the Upper 20's to lower 30's and Highs on Wednesday in the Upper 30's (NW) to low 40's for PHL and points south and east. On Wednesday, some morning Snow Showers for many will become mixed with or change to rain showers during the afternoon, S and E of PHL.
Wednesday Night and Thanksgiving Day (Thursday)
Mostly Cloudy, breezy and unsettled with a few snow showers can be expected for Wednesday night as temps drop to the mid and upper 20's. On Thursday we can expect some improvement with a mix of clouds and sunshine throughout the day. A few scattered flurries or sprinkles are possible with highs in the low to mid 40's.
I'll be doing my December Outlook within the next few days, as promised ! Overall I expect this Cold weather pattern to continue, at least into the first 2 weeks of December. I also see much of the M/A and NE States, having some good snow threats, which I'll get into more detail with my upcoming Outlook.
Take Care,
Ruggie
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