ChescoWx

We did see our 1st snow flakes of the year overnight and this morning here in NW Chesco. Now while November is certainly not a snowy month - we average only 1.2" of snow. We have had some significant (+6") storms during the month. Of note just 3 years ago on November 15 into the 16th we picked up 7.3" of snow - our top 5 snowstorms in November were: November 15, 1906 (9.5") November 6, 1953 (8.6") November 15-16, 2018 (7.3") November 26, 1938 (7.0") November 4, 1910 (6.6")

Might see our 1st flakes of the season tonight and again before dawn tomorrow - especially in the higher spots in Western Chester County....

Total rain 0.70" in bucket and 0.56" - Tempest and 0.52" on Vantage Pro

Out here in the NW burbs we average 36" of snow per winter (same as Chicago IL for good coffee table conversation) - I am thinking a quick start and strong finish with near average snowfall but unlike the last couple years a period of well below temps in December and February

Beautiful day across the area - our normal high today is 55.9

his morning's low's across Chester County ranged from the mid-20's in some lower valley spots to the low 30's higher up on the ridges. Here in East Nantmeal our low of 32.1 was our 4th straight morning with below freezing temps. Here in Chester County you need to go back 19 years to 2002 to find the last time 4 or more days had freezing temps during the first seven days of November.

Through the first 5 days of the month - this is the 22nd coldest start to November across 127 Novembers of record here in Chester County PA

A transitory warming as by next weekend we start a well below normal stretch....

So does what happens in Novembers the winter shall remember? For Western Chester County PA - At least in terms of top 20 extreme Temperatures in November the analysis shows that 70% of coldest Novembers resulted in below normal subsequent winter temps and around normal snowfall. While the top 20 warm Novembers indicate a 70% chance of warmer than normal winters with below normal snow totals.

Up here on the peaks of The Welsh Mountain Anticline we have recorded our 1st sub-freezing morning here in East Nantmeal Township. Today's low was 30.2 - this is our 1st freezing temperature since April 22nd when we touched 31.3 and the coldest since the 26.3 AM low back on April 3rd. With this low the growing season has ended in the Township at 196 days. Our normal growing season is 185 days between freezes. The earliest 1st freeze was on September 20, 1956 and the latest was November 23, 2015.

Of course no such luck reaching freezing across the peaks of Chester County! We could do no better than 34.5 - some spots below 550 ft are near 30. Growing season continues!!

Temps have been slowly falling with some mist from time to time

There has been some scattered frost in valleys across Chester County - however freeze wise we are still not to close to latest 1st freeze. Below are the top 10 latest freezes in Chester County history since 1894 - average date of 1st freeze is October 24th. Of note 8 of the top 10 latest have all occurred since 2000! 1) 11/23/2015 / 2) 11/12/2016 / 3) 11/12/2005 / 4) 11/10/2017 / 5) 11/10/2018 / 6) 11/9/2004 / 7) 11/8/2007 / 8)11/8/2014 / 9) 11/7/1931 and 10) 11/6/1946

Top 10 warm October rankings across NWS Climate sites in Chester County PA

I recorded the 2nd strongest wind gust at 51 mph down in Sea Isle City NJ in the past hour. Top gust so far back here in East Nantmeal has been 25mph Rainfall so far 0.16"

Storm total up to 2.07" with 1.32" since midnight. Looks like some additional showers working down from NE to SW

Sun breaking through as temps struggle to escape the 50's - normal high today is 61.4

While a bit behind starting to see some nice color out here....

Lows this morning ranged from the upper 40's in valley locations to the low 50's on the higher ridges. Today and tomorrow should both reach the low 70's across Chester County before a turn to cooler again starting Friday. Temps look to stay in the 50's for high temps starting on Saturday through next Wednesday. Dry weather until shower chances start to increase on Sunday night.

Chilliest morning of the season so far here across Chester County with low temperatures ranging from the mid-30's in lower spots of the county below 500ft above sea level (ASL) to the lower 40's in most spots over 600 ft ASL. Here in East Nantmeal Township our low so far this AM has been 42.6 - chilliest since the 41.7 on May 13th. Today we warm to near normal in the mid 60's to temps rising into the low 70's both tomorrow and Thursday. We then start another sharp cooling trend for the weekend and the start of the new work week by next Monday with highs at that time struggling to make the low to mid 50's across much of the county.

Today's Low temperature of 44.3 was our coldest reading since the 41.7 on May 13th

Highs today across Chester County ranged from 74 in Glenmoore; 77.1 in East Nantmeal to 79 at Pottstown to 80.6 in West Chester to 80.7 at GO Carlson Chester County Airport...tomorrow will be our last well above normal day for a while

With the sun finally returning both today thru Saturday will be well above normal but nowhere near the record highs for today which is 85 back in 1985 & 1920 and 89 tomorrow from way back in 1897. With the strong cold frontal passage on Saturday night it looks like our high temperatures both Sunday and Monday will for the most part stay in the 50's across most of the higher terrain across Western Chester County while low 60's in the lower spots across parts of Eastern Chester County.