Sunday, November 03, 2013

Coldest Night Of Autumn So Far On Tap

Waking up this morning to a cooler push of air working in from the west and northwest as the post-cold push finally made it here, nearly 48 hours after the front first pushed through the region on Friday morning.  This is setting us up for what will likely be the coldest morning of the Autumn for the region tomorrow morning.

Our coldest morning so far in the city is 37, set back on October 25th and 26th. Just about everyone else has been colder than that -- bottoming near or below freezing. It does look like tonight provides most of the region a subfreezing night, with the city probably bottoming out below what occurred a couple of weeks ago.

NAM model guidance for tomorrow morning -- 20's common north/west of the city.
As a result, freeze warnings are up for Philly and Delaware County for tonight. The growing season (which determines whether freeze warnings or frost advisories get issued) has ended for the rest of the region and probably ends for at least Delaware County tonight (it officially ends in Philadelphia on November 5th regardless).