Philadelphia Area Weather Forecasts

WEEKEND WEATHER FORECAST

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Some storms have fired up to our south and west Friday afternoon—

Radar Fri 4:30 PM with superimposed RAP model omega and 700 mb windstreams (10,000 feet) (Click on image for a larger view.)

A weak, slowly approaching cold front will bring the chance of widely scattered thundershowers Saturday and Sunday afternoons. Exact placement and timing still to be determined but mostly far west and north of the city.

12z ECMWF-AI model forecast for 2 PM Sunday. Cold front to our northwest. Tropical disturbance (Hurricane Erin) to slowly move northwestward. (Click on image for a larger view.)

The latest ECMWF-AI model forecast for Hurricane Erin takes it still closer to the coastline of NC late Wednesday. This AI model did very well with last year’s hurricane predictions. It’s been back and forth regarding the track of Erin. Here’s the latest—

12z ECMWF-AI model forecast for late Wednesday night. Closest forecast track so far. (Click on image for a larger view.)

Typical August temperatures and humidity for this weekend.m Afternoon scattered to isolated storms mostly north and west of the immediate PHL area.

Saturday

Partly to mostly sunny. Chance of a widely scattered thunderstorm mainly west of our area. Heat index 91 for PHL

18z Model Blend (NBM) high temp Saturday low uncertainty Contours are 1º increments (Click on image for a larger view.)
Sunday

Partly sunny. Chance of a widely scattered thunderstorm mainly west of our area late afternoon. Heat Index 96º Philadelphia.

18z NBM high temp Sunday. Low uncertainty. Contours are 1º increments (Click on image for a larger view.)

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