ChescoWx

A light coating of snow overnight following the light coating yesterday morning...otherwise nada here in Chesco....might see more than a coating with some squalls making it this far SE tomorrow AM...

It has snowed very lightly much of the day with little on the radar. A couple hundred feet lower at my son's school it was just drizzle. That said with some of those pivot bands making it back in this direction the snow has picked up as you can see below - might get another coating like this AM...

Continues to snow lightly here in NW Chesco as it has most of the day - current temp at our high for the day at 36.1

My updated forecast below - of course high variability further SW you go - pretty confident to the northeast

Very light snow here in NW Chesco temp at 32.8 - impactful snow should stay well Northeast of this area

For sure - further North and East will see the most...

It never had much snow in the forecast till the 6z run overnight... Today: Dense overcast. A chance of a mix of sleet, rain, and snow in the morning, then a mix of sleet, rain, and snow likely in the afternoon. High 36, but temperatures falling in the afternoon. Wind east around 5 mph in the morning, becoming 10 mph in the afternoon. Chance of precipitation 80 percent. Precipitation (liquid equivalent) mostly between half an inch and one inch. Snow or ice (on ground) accumulation about half an inch. Tonight: Dense overcast in the evening, becoming cloudy after midnight. Patchy light fog after midnight. A mix of rain and sleet likely in the evening, then a chance of a mix of rain and snow after midnight. Low 32. Wind chill ranging from 25 to 30. Wind east around 7 mph in the evening, becoming 4 mph after midnight. Chance of precipitation 80 percent. Precipitation (liquid equivalent) mostly between a quarter and half an inch. No snow or ice (on ground) accumulation expected. Monday: Dense overcast in the morning, becoming cloudy in the afternoon. Patchy light fog. A mix of snow and rain likely. High 34. Wind north around 5 mph. Chance of precipitation 80 percent. Precipitation (liquid equivalent) mostly between half an inch and one inch. Snow accumulation 2 to 4 inches. Monday night: Dense overcast in the evening, becoming cloudy after midnight. A chance of snow in the evening, then a slight chance of snow after midnight. Low 27. Wind chill ranging from 18 to 25. Wind north-northwest around 8 mph in the evening, becoming 11 mph, gusting to 18 mph, after midnight. Chance of precipitation 50 percent. Precipitation (liquid equivalent) mostly around a tenth of an inch. Snow accumulation about half an inch.

Attached is my forecast....apologies for the sloppy graphics..I am dragging my 1" line down to 76 - my snow forecast includes the IP which I think will be more than current thinking....plus I bet the Norlun will be backing more SW than modeled

This one really reminds me of Christmas 2002....except elevation will not be as big a factor as back then. However, firmly believe anyplace north of M/D line could see accumulating < 2" but likely not plowable snow by Monday night. Expect that WAA event on Sunday will be less than some folks think but as wrap around develops really think current NWS WSW area especially east of Northeast extension of Turnpike and NE bound will do well with the snow.

Watch where upper low moves....right now just south of m/d line....north of there will see some accumulation (1" to 3") - not all snow and not a blockbuster but for this early in the season....any snow would be a bonus

Nice temp inversion around Western Chester County this morning with Low spots well below freezing including Marsh Creek down below 400 feet at 28.0 and PTW at 30.9 - while here in East Nantmeal at 685 ft we bask at 38.4. Would be interesting to find out how many less freezing days we have here up the mountain incline

1.41" of precipitation over last 3 days. Wet snow this AM did not accumulate (just a light coating) as the heaviest bands were west of East Nantmeal.

Not quite seeing what you are.... I like a normal December temp wise....after a cold 1st 10 days of the month with an overall above average snow month....before a snowy January. Best month to "waste" cold is November

Kudos to JB for his call of snow down to the m/d line - moderate snow and 35 in Western Chester County PA

Through yesterday our November average temperature here in Western Chester County is at 40.1 - if the month ended today this would be the 15th coldest November since local records began in 1894 (126 years). Looking ahead most days with the exception of a couple days should average normal to below. Looks increasingly likely we will see our 1st below normal month since last November and a chilly finish and opening to December

Below is my 2019-20 Winter Forecast temps/snowfall for Western Chester County PA. My forecast assumes a neutral ENSO plus warmer N Pacific SSTs and analog winters with these conditions (more ridge W trough E) overall snowier/slightly colder - if like last year....it will be far from accurate - enjoy! Hope others post their ideas/forecasts

Through yesterday halfway through November our average temp is 40.5 - if the month ended today it would be the 22nd coldest November since Chester County PA records began 126 years ago...in looking ahead I see very few above normal temp days over the remainder of the month. Giving us an excellent shot at at top 10 coldest November on record IMHO and of course our 1st below normal month since November 2018. For those interested I am planning on posting my Chester County winter forecast this weekend on both twitter and here.

Why not start early with that well respected MET JB at Weather Bell stating he sees an Ohio valley to Northern Mid-Atlantic snow storm and of course cold air for early Turkey Day week. Just thought I would document this in case we want to give "kudos" to JB" for your older posters you will remember those days and posts on some of the old forums. Enjoy the weather it's the....

A very impressive November cold outbreak! Today's high of just 32.0 exactly makes this the 2nd earliest sub freezing day in the Chester County PA 126 years of local records dating back to 1894. The previous earliest sub 32 day was the 30 degree high back on November 11. 1987. Additionally this morning's low of 19.1 broke the old elevation record (1983-Present) of 20.0 set in 1996. This also marked our 3rd record low in the last 5 days. Looking ahead another cold shot this weekend and no real warmups to above normal that may last through the end of November. We have a good chance to record our 1st below normal month since last November 2018. That month we ended up averaging out at 3.1 degrees below normal - through today we are at 3.8 degrees below normal.

Coldest temp this season here in Western Chester County also a new record Low for the 3rd time in the last 5 days here in the Philly burbs of Western Chester County. The 23.1 before midnight last night broke the old mark of 24 in 1995 and this morning's 19.1 breaks the record of 20 from 1996. Also the earliest low below 20 since 11/6/91. Impressive early season cold.

Some record low Western Chester County PA records are threatened this evening and tomorrow. Record low high elevation record is 24.0 (1995) all-time record is 15.0 (1912). for today - might beat the 1995 record by midnight - currently at 25.7. Tomorrow's record elevation low record is 20.0 (1996) and all-time low is 17 (1920). Low max record 37 (1995) & 35 (1911)

Just started to snow lightly in NW Chesco temp down to 34.7

Down to 34.8 here in NW Chesco but with just heavy virga falling

Good stuff! of course last November we had a well (3.1) below normal month followed since by every month being above normal this year. Including the December through March period running 1.5 degrees above normal although near normal snow for the winter.

Our low this morning of 20.6 broke the old Western Chester County record of 22.0 set back in 1993. The all-time County record was just missed which is the 19.0 from 1976. We also set a new record low max yesterday of just 39.8 besting the old mark of 41.9 from 2007. Of note today is the last day in Chester County that does not have recorded snowfall until April 2nd