ChescoWx

How cold has this year's first 10 days of December been in Chester County PA? Glad you asked - This is the 10th coldest start to December since records began way back in 1893. Of note 5 of the top 11 cold starts to December have all occurred since 2000.

The 850mb freezing line is sinking south - now just north of Chester County and through Northern Berks county. If precip sticks around past 5pm we might see a few flakes as far south as Chesco.

Latest control and European ensemble runs for the potential Sunday winter event.

We have seen below normal temperatures every day with the exception of one day since Thanksgiving Day. This pattern looks to continue for at least the next week. We warm enough today that except for areas in Northern Berks and Lehigh counties we should see mainly rain showers. We turn colder tomorrow and will see some light snow chances both Friday night and again during the day on Sunday.

We have seen below normal temperatures every day with the exception of one day since Thanksgiving Day. This pattern looks to continue for at least the next week. We warm enough today that except for areas in Northern Berks and Lehigh counties we should see mainly rain showers. We turn colder tomorrow and will see some light snow chances both Friday night and again during the day on Sunday.

This morning, we saw many valley locations across the area down into the single digits for low. The lowest was the 6.1 at Warwick. This was the coldest morning since late last January when many spots saw below zero temps both the 21st and 22nd of January. We continue to keep well below normal temperatures for the remainder of the week. We do warm up to closer to normal tomorrow which should allow any start of snow or freezing rain to switch to plain rain from SE to NW across the area by late morning. A couple more chances of snow look possible both on Friday night and again on Sunday morning. More frigid temperatures follow any snow potential on Sunday with the coldest day so far this year by next Monday.

This morning, we saw many valley locations across the area down into the single digits for low. The lowest was the 6.1 at Warwick. This was the coldest morning since late last January when many spots saw below zero temps both the 21st and 22nd of January. We continue to keep well below normal temperatures for the remainder of the week. We do warm up to closer to normal tomorrow which should allow any start of snow or freezing rain to switch to plain rain from SE to NW across the area by late morning. A couple more chances of snow look possible both on Friday night and again on Sunday morning. More frigid temperatures follow any snow potential on Sunday with the coldest day so far this year by next Monday.

You can tell things have slowed down with my business as we near the holidays....plenty of time for some updated analysis! Below are the Top 10 snowstorms since January 1, 2020 here in East Nantmeal Township. We have had 5 storms greater than 6 inches but only 2 storms that have exceeded 10" or more.

You can tell things have slowed down with my business as we near the holidays....plenty of time for some updated analysis! Below are the Top 10 snowstorms since January 1, 2020 here in East Nantmeal Township. We have had 5 storms greater than 6 inches but only 2 storms that have exceeded 10" or more.

Euro not so enthused

Below is the latest GFS model which paints an almost ideal view of what a classic White Christmas would look like. Below is the total snow between this weekend and Christmas Eve morning at 7am. That model has a morning temperature of 18 degrees with between 10" to 14" of model snow we will never have to shovel.

At East Nantmeal today will be our 2nd below freezing day of the season and this morning was our 16th sub-freezing low. Below are the average number of each type of day at all of the Chester County Area Climate Locations. You may notice lower elevation spots in general experience more freezing lows while the relatively higher spots see more afternoon highs with below freezing temperatures.

At East Nantmeal today will be our 2nd below freezing day of the season and this morning was our 16th sub-freezing low. Below are the average number of each type of day at all of the Chester County Area Climate Locations. You may notice lower elevation spots in general experience more freezing lows while the relatively higher spots see more afternoon highs with below freezing temperatures.

Yep 2020-21 - 52.2" here in NW Chester County

The "trusty" ICON model highlight our next 2 winter "events" the first on Wednesday and the next on Friday night....