ChescoWx

Happy New Year to all! A wind advisory remains in effect till 10pm tonight. Temperatures today will be near normal (low to mid 40's) before falling later in the day. We finished 2024 as the 3rd warmest year in my 21 years of observations here in East Nantmeal. I will update with the annual climate summary for the rest of Chester County later. Temperatures both Thursday and Friday will be in the low to mid 30's. We could see a period of light snow on Friday PM. Temps remain below freezing this weekend with snow chances increasing by Sunday night into Monday.

Happy New Year to all! A wind advisory remains in effect till 10pm tonight. Temperatures today will be near normal (low to mid 40's) before falling later in the day. We finished 2024 as the 3rd warmest year in my 21 years of observations here in East Nantmeal. I will update with the annual climate summary for the rest of Chester County later. Temperatures both Thursday and Friday will be in the low to mid 30's. We could see a period of light snow on Friday PM. Temps remain below freezing this weekend with snow chances increasing by Sunday night into Monday.

With another 0.46" of rain this evening we are now over 0.84" of normal precipitation for December. I remember when some folks at the start of November were concerned about drought conditions etc.... welp we will finish 2024 at almost 96% of normal precipitation across most of the area.

With another 0.46" of rain this evening we are now over 0.84" of normal precipitation for December. I remember when some folks at the start of November were concerned about drought conditions etc.... welp we will finish 2024 at almost 96% of normal precipitation across most of the area.

The chances this 12z run of models is the actual solution.....slim and none!

12z Euro also has a suppressed solution with nada for the Sunday/Monday event.....

Truth! I always expect suppressed GFS runs with any potential east coast events. I suspect it comes north again at 18z but book another suppressed version like this one by Thursday or so...

As suspected the 12z GFS presents it's suppressed version....big snows all the way down in NC....

Happy New Year's Eve to all of you! Today looks like our last day that will be well above normal for quite a while. Unfortunately, while we start out sunny clouds will increase and some poorly timed showers and maybe even a rumble of thunder will arrive from the west. Rain should enter Western Chester County during the 7pm hour or so and with some luck will exit stage right (east) before the midnight hour. Our step down to well below normal temperatures starts tomorrow with closer to normal highs in the mid 40's. By the time we get to Friday we may start a pretty long stretch of freezing days with highs over the weekend struggling to escape the 20's. Snow chances increase by the end of the weekend and as we move into the first full week of 2025.

Happy New Year's Eve to all of you! Today looks like our last day that will be well above normal for quite a while. Unfortunately, while we start out sunny clouds will increase and some poorly timed showers and maybe even a rumble of thunder will arrive from the west. Rain should enter Western Chester County during the 7pm hour or so and with some luck will exit stage right (east) before the midnight hour. Our step down to well below normal temperatures starts tomorrow with closer to normal highs in the mid 40's. By the time we get to Friday we may start a pretty long stretch of freezing days with highs over the weekend struggling to escape the 20's. Snow chances increase by the end of the weekend and as we move into the first full week of 2025.

In this type of pattern suppression will be the biggest obstacle......that said I suspect a GFS run soon that has a big event back on the table and then at some point this week a big miss to the south.

Below is a listing of the Greatest December Snowstorms in Chester / SE Berks County PA History

Below is a listing of the Greatest December Snowstorms in Chester / SE Berks County PA History

12z Euro with a plowable event for many using Kutchera method to account for fluff factor etc.

Over the last 3 days most of Chester and Berks counties have picked up between 1.25" to 1.50" of rain. Today will be a beautiful late December day with temperatures again well into the 50's. New Year's Eve day starts dry but rings in 2025 wet. We turn chillier with closer to normal temperatures for New Year's Day before we fall to well below normal temperatures by Thursday through next weekend.

Over the last 3 days most of Chester and Berks counties have picked up between 1.25" to 1.50" of rain. Today will be a beautiful late December day with temperatures again well into the 50's. New Year's Eve day starts dry but rings in 2025 wet. We turn chillier with closer to normal temperatures for New Year's Day before we fall to well below normal temperatures by Thursday through next weekend.

The 12z European as it is now running seems to be showing the suppression issues I would suspect in this pattern.....that said - many runs to go!

Very chilly water temps off AC at only 42 degrees this AM....sea breeze has kicked in down the shore and may see temps fall back into the 40's on the beaches

Very chilly water temps off AC at only 42 degrees this AM....sea breeze has kicked in down the shore and may see temps fall back into the 40's on the beaches

In these situation I like to keep an eye on changes in the ensemble runs (only 12z runs). The trend has been for an increase in median snow on the Euro/CMC and decreasing amounts on the GFS. Looking at the teleconnections I would suspect suppression could be an issue with any significant snow events. Just my 2 cents on what should be a great winter pattern for much if not all of January!

Most of the area has picked up nearly 1" of rain over the last 3 days. We will finish the year not too far from normal annual rainfall. Today will be our warmest day since December 11th (59.6 degrees). Many spots could hit 60 degrees! Rain chances increase again tonight before we finally see some sun tomorrow. Still mild tomorrow with highs in the low 50's before we see more rain on New Year's Eve. We then start the trend to colder days with temperatures by Friday and next weekend falling below freezing for high temperatures.

Most of the area has picked up nearly 1" of rain over the last 3 days. We will finish the year not too far from normal annual rainfall. Today will be our warmest day since December 11th (59.6 degrees). Many spots could hit 60 degrees! Rain chances increase again tonight before we finally see some sun tomorrow. Still mild tomorrow with highs in the low 50's before we see more rain on New Year's Eve. We then start the trend to colder days with temperatures by Friday and next weekend falling below freezing for high temperatures.

Most spots across the area picked up between 0.40" to 0.60" of rain since last evening. Here in East Nantmeal we have picked up 0.56". Some off and on showers continue through early afternoon and then rain looks like it will return late tonight through early Sunday. We will dry out a bit tomorrow before more rain returns tomorrow night. Very mild for the rest of the year as we warm well into the 50's tomorrow. Rain chances again look likely by New Year's Evening before we see temperatures chill down to normal by New Year's Day. Well below normal temperatures are likely by Thursday and Friday.

Most spots across the area picked up between 0.40" to 0.60" of rain since last evening. Here in East Nantmeal we have picked up 0.56". Some off and on showers continue through early afternoon and then rain looks like it will return late tonight through early Sunday. We will dry out a bit tomorrow before more rain returns tomorrow night. Very mild for the rest of the year as we warm well into the 50's tomorrow. Rain chances again look likely by New Year's Evening before we see temperatures chill down to normal by New Year's Day. Well below normal temperatures are likely by Thursday and Friday.

Some lower spots like Warwick Park and Chester Springs have already fallen to below freezing....we should see temps rebound bit before any precipitation starts towards the 11pm hour. 34.3 here in East Nantmeal