[su_box title=”Weather Update Sun 9:00 PM” box_color=”#defcdc” title_color=”#000000″]Today’s NAM shows about 1 inch of snow Tuesday evening.

Today’s GFS and FV3-GFS shows some low pressure development along the front with potentially higher snow totals, especially north and west of the city.  Current QPF for these models has increased to 0.60 inches water, and current snow algorithms show about 3 inches of snow. Stay tuned.   [/su_box]

A weak cold front will move through  about 6 PM and clouds will increase ahead of the front this afternoon.  A widely scattered shower is possible with the frontal passage.

Skipping over to Tuesday, another cold front, this time an arctic front,  will move through during late afternoon into  the evening. Rain is expected prior to the frontal passage, during the late afternoon.

As the strong front moves through, the rain is expected to change over to snow before ending a little after midnight Tuesday. Total QPF with this front is about 0.35 inches water.

Much of the precipitation will fall as rain, but about 0.10 inches water  will fall as snow, more to the north and west of Philadelphia.   Current snowfall totals is about 1, possibly 2 inches, with the higher totals north and west.

[su_box title=”Sunday Morning Update” box_color=”#defcdc” title_color=”#000000″]The NAM has joined the rest of the models with a continued chance of on and off light showers and drizzle through the evening.

I don’t recall any of the models showing the fog that has developed. With the fog and  heavy low cloud deck, it doesn’t look like the mid 60s that was heavily advertised will become a reality.  High temperatures now looking to be about 59.

Skies clear on Monday.   A period of cold weather for much of the upcoming week and weekend with rain rather than snow looking possible for end of next weekend.

[/su_box]

From last night:

Tonight’s NBM (National Blend of Models) has rain tapering and ending about 2-3 pm on Sunday.  The NAM has it ending a bit earlier, the GFS has the chance of continued light showers into the evening. Either way, it will cloudy and mild. High 63.

Outlook- A winter-like broad dip in the jet stream will bring cold temperatures for the next week or so.  Stay tuned.