ChescoWx

Just posted by Mt Holly ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THURSDAY TO 10 AM EST FRIDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches. * WHERE...Portions of central, northern, northwest and southern New Jersey, southeast Pennsylvania, northeast Maryland and central and northern Delaware. * WHEN...From 10 PM Thursday to 10 AM EST Friday.

That is the CTP area - Mt Holly always posts theirs later in the 3pm hour or so...

I think most will get on the board with a measurable event between 0.5" to 3.0"

I have really been liking the National Blend of Models runs - below is the latest from 12z

Hardly a flake here....but down in Sea Isle City

An occasional flake here in NW Chesco temp 29.4

Think folks get excited by snow? my Chester County Weather Facebook page has picked up almost 500 folks since 8am this morning!! I can't keep up with the new add requests!

I suspect we should see the EURO shift more to the southeast with the 12z run

Agreed! This will make for some excellent radar hallucinations!!

As you and I know well...analogs can only carry us so far....weather will do what it chooses to do!!

Just asking as we need to do a lot of rigorous testing and p-value analysis like I have done with the Chester County data to ensure it is valid and comparable between stations following observation location movements

What combined sources do you use for your data??

2021 Climate Summary for East Nantmeal Township in Chester County PA

With today and tomorrow both exceeding 50 degrees we will end the month with 12 days at 50+ here in Chester County PA This will only be good for the 18th most 50+ days in December since 1894 The Top 10 years with 50+ days are below: 2015 (19) / 1982 (16) / 1990 (16)/ 1899 (15) / 2001 (15) / 1895 (13) / 1913 (13) / 1948 (13) / 1956 (13)

While not 30 year norms always interesting to watch the cyclical patterns and smoothing that occurs when simply comparing decades....see the Chester County Snowfall history by decade since the 1890's below

My Chester County PA Weather Facebook discussion site has continued to explode with now over 2,100 folks on board and over 1,500 in just the last 2 weeks! A lot of people in Chesco seem to be as Ben Franklin said weather wise rather than other wise!! A question came in today regarding average snowfall per month and all-time monthly snow totals for Chester County. Below is the average snowfall by month that we receive here in Chester County PA along with the all-time greatest monthly snowfalls and those years. The earliest snow ever recorded in Chester County was the 9.0" back on October 29, 2011 and the latest was on April 28, 1898 when 1.0" of snow was recorded

The snow has changed to rain but temps have continued to slowly fall - we are just above freezing here in NW Chesco at 32.6

A mix of sleet and snow here in NW Chesco at 33.9 degrees with no accumulation.... a snow less December still in tact!

A few flakes just started here in NW Chester County PA - temp 34.4

S+ being reported at York PA with vis under 1/4 mile temp has fallen there to 32

Spots with some elevation like much of Western Chesco and Berks County may see something other than white rain...

Today's High Temperature of 56.6 was the 10th warmest Christmas Day in Chester County PA weather history with the warmest high temp being the 66.7 back on Christmas Day of 2015. The coldest Christmas Day here in Chester County since records began back in 1894 was Christmas Day in 1983 with a high temperature of only 6 degrees above zero and a low temp of 3 degrees below zero

For those who like cold the CFS has a mighty cold looking January on their latest forecast....of course not saying this is reality but could it be the old JB delayed but not denied cold??

Barring a Christmas miracle it appears with this years "green" Christmas we will now have experienced the 2nd longest stretch (9 years) without a White Christmas in Chester County. Our last White Christmas occurred back in 2012. The longest stretch in Chester County history without a White Christmas was the 16 years between 1931 and 1946...so we still have a ways to go to break that record!!