Philly Weekend Weather Outlook

An interesting  weekend weather forecast as a dip in the jet stream and an associated cold front moves through Friday night while deep low pressure winds up over the Canadian maritime area.  Complicating the picture is a tropical depression far off the southeastern coastline  which is expected to become brought into the circulation of the deepening low in Canada.

As is often the case, a double barrel low pressure system is frequently poorly modeled and combining the situation with a tropical system is a double whammy.

That said, the models have been reasonably consistent with the frontal passage timing for Friday night. Where the errors may occur is the amount of rain forecast and the temperatures/wind for Saturday and Sunday.

Much of the rain is expected to miss us on Friday, as energy is expected to be transferred to our north.

As it stands right now, Saturday will start damp, windy and noticeably chilly but some breaks of sun are expected for the afternoon.  High 58, but it wouldn’t surprise me if it’s cooler.

Sunday will still be windy and chilly, with a mix of clouds and some sun, as a secondary front moves through late Sunday.  High 56.

Expect changes in this forecast.  I’ll update Saturday morning.