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Saturday Forecast Update
Posted Friday 03/14/25 @ 9:29 PM — With Daylight Saving Time in effect, the models are available an hour later. My usual posting time for the Weekend Weather Forecast, between 5 PM and 6 PM, missed several models.
There are some changes in the forecast that have come to light with the these afternoon models. In addition to low clouds for Saturday morning, it appears that fog and even some light drizzle may develop early Saturday morning, according to the several models. This will be especially true along the Jersey Shore. Fog dissipates towards noon. We may see some brightening of the skies in the afternoon on Saturday.
Here’s tonight’s 00z NBM showing visibility less than 1/2 mile for much of the region at 10 AM—
Previously Posted Fri @ 4:10 PM — —Deep low pressure will move up through the Great Lakes this weekend as additional lows develop along and ahead of a cold front.
Clouds ahead of this system will be with us on Saturday.
Some showers are possible as early as late Sunday morning, especially west of the city. Strong winds, wind shear and high gusts may result in downed trees. Rainfall will be heavy with the heaviest occurring during Sunday evening into the after midnight hours. Rainfall about 1.1″
A brief dip in the jet will allow cold air Monday into early Tuesday. Temperatures rebound quickly though next week.
Saturday Forecast
Low clouds for much of the day. Mild. There may be some breaks in the cloudiness late afternoon into the evening.
NBM high temperatures: Blue Bell, PA 60º Philadelphia, PA 62º
High Uncertainty (based on standard deviation): ± 4.2º
AI model high temperatures are about 10 degrees lower ~52º!
Sunday Forecast
Cloudy with showers west of the city by late morning. Showers, thunderstorms and high wind gusts in the afternoon into the evening and past midnight. Wind gusts near 50 mph possible. Rainfall 1.1″
NBM high temperatures: Blue Bell, PA 67º Philadelphia, PA 68º
Average uncertainty (based on standard deviation): ± 2.4º