ChescoWx

Now before our LV friend says all of the data is invalid blah blah....I of course have never used or presented any other Chester County sites for my data analytics or weather website ever until we started this fun little thread. I have for the last 23 years focused entirely only on Coatesville PA weather data as it represents the ONLY complete data set from 1894 and updated through today for ALL weather parameters and has zero gaps in any observation data. I have never done any QC on the other sites in the County and simply reported them on this thread to corroborate analysis for Coatesville which I have done in this thread - even though LV doesn't like it.

Yep it looks like the NCDC has faulty data for West Chester for April 1895. See below - it looks like they simply calculated all falling precipitation as snow and of course no other station in the county reported any snow that month.

Tomorrow will see near record high temps for December 11th - so below is a list of record high temperatures for NWS Coop sites across Chester County and the year it occurred Coatesville - 68 (1897) / West Chester - 67 (1966) / Phoenixville - 66 (1966) / Chaddsford - 65 (1971)/ Glenmoore - 64 (1971) / Honey Brook - 64 (1971) / Devault - 62 (1897)

Can't delete factual history that has been in existence for over 100 years because you dislike the facts.....just sayin

Below are the Top 10 snowstorms and the location that reported the snow totals across all National Weather Service Cooperative (COOP) locations in Chester County PA since record keeping began back in 1893

Below are the Top 10 snowstorms and the location that reported the snow totals across all National Weather Service Cooperative (COOP) locations in Chester County PA since record keeping began back in 1893

Hey LVwxHist guy - to help get you back on track away from this strange historical snow witch hunt....since you are the LV wx guy - post some actual stats for the Lehigh Valley and we can see how different the weather is from there vs. Chester County PA. For starts why don't you post the top 20 snowstorms for the LV and we can compare and contrast against all of the Chesco sites - thanks!!

Indeed!! you can't change history....but in our current cancel culture - sadly they may indeed cancel history if it does not meet the narrative....strange times we live in....enough of that crap - now back to the weather!!

LOL except your every snow total inflation story for Coatesville....kind of fell apart like 70 times!!

Just to clarify those are daily snowfall totals - I failed to include the actual days of the month (see updated below). - those are 70 daily snow observations that Coatesville's observer reported less than West Chester - It appears clear the April 8. 1895 number out of West Chester is wrong - in fact a bunch of the 1895 WC obs look a bit off.... # Year Month Day CV Snow WC Snow 1 1895 April 8 20.9 2 1909 December 25 13 13.5 3 1895 February 8 10 13.3 4 1895 April 13 8.8 5 1895 February 21 2 7.5 6 1898 November 26 4.5 6 7 1903 February 16 5 6 8 1904 December 10 5.9 6 9 1899 February 7 3.3 5.5 10 1904 November 13 5 5.5 11 1899 January 1 0 5 12 1904 February 19 4 4.5 13 1904 December 25 4.4 4.5 14 1896 March 11 4 4.3 15 1894 April 9 0 4.1 16 1895 April 2 4.1 17 1903 December 3 2.2 4 18 1908 January 24 3.5 4 19 1908 December 23 2.8 4 20 1894 February 25 3 3.5 21 1904 March 14 2.4 3.5 22 1905 December 15 2.5 3.5 23 1899 January 31 3 3.3 24 1896 March 15 2 3 25 1896 December 16 2.5 3 26 1898 November 27 0.5 3 27 1907 February 1 2 3 28 1908 January 23 2.5 3 29 1894 February 22 2 2.8 30 1895 January 29 2.5 2.8 31 1907 January 17 2.7 2.8 32 1895 January 28 2 2.5 33 1902 January 29 1.8 2.5 34 1897 January 15 2 2.3 35 1901 November 29 2.1 2.3 36 1907 December 4 0.7 2.3 37 1898 November 30 1.1 2 38 1900 January 1 1.5 2 39 1901 January 30 1.5 2 40 1903 January 25 1.2 2 41 1907 November 24 1 2 42 1909 January 17 1.5 2 43 1896 February 19 1.8 44 1902 February 22 1.4 1.8 45 1906 January 8 1.7 1.8 46 1907 January 26 1.5 1.8 47 1895 April 1 1.6 48 1909 February 3 0.6 1.5 49 1909 March 6 1.3 1.5 50 1901 December 23 1.2 1.3 51 1902 January 30 0.7 1.3 52 1904 December 12 0.3 1 53 1907 February 10 0.5 1 54 1904 February 27 0.6 0.8 55 1907 January 27 0.5 0.8 56 1907 January 29 0 0.8 57 1907 January 30 0 0.8 58 1908 December 11 0.5 0.8 59 1909 January 7 0.5 0.8 60 1909 December 13 0.5 0.8 61 1904 February 26 0.3 0.5 62 1907 December 18 0.2 0.5 63 1904 December 13 0 0.3 64 1904 December 15 0.0001 0.3 65 1909 January 8 0.2 0.3 66 1909 January 29 0.2 0.3 67 1895 April 3 0.2 68 1908 December 13 0.1 0.2 69 1909 March 30 0 0.2 70 1909 March 25 0 0.1

LV you just keep on back pedaling - now it's only the big storms but he is a good reporter for small storms.....LOL!! All 70 times Coatesville reported less than West Chester are detailed below,,,,and this is only over a short 15 year period - that you said was for every snowfall.....weak!!!! # Year Month NWS WC COOP 1 1895 April 20.9 2 1909 December 13.5 3 1895 February 13.3 4 1895 April 8.8 5 1895 February 7.5 6 1898 November 6 7 1903 February 6 8 1904 December 6 9 1899 February 5.5 10 1904 November 5.5 11 1899 January 5 12 1904 February 4.5 13 1904 December 4.5 14 1896 March 4.3 15 1894 April 4.1 16 1895 April 4.1 17 1903 December 4 18 1908 January 4 19 1908 December 4 20 1894 February 3.5 21 1904 March 3.5 22 1905 December 3.5 23 1899 January 3.3 24 1896 March 3 25 1896 December 3 26 1898 November 3 27 1907 February 3 28 1908 January 3 29 1894 February 2.8 30 1895 January 2.8 31 1907 January 2.8 32 1895 January 2.5 33 1902 January 2.5 34 1897 January 2.3 35 1901 November 2.3 36 1907 December 2.3 37 1898 November 2 38 1900 January 2 39 1901 January 2 40 1903 January 2 41 1907 November 2 42 1909 January 2 43 1896 February 1.8 44 1902 February 1.8 45 1906 January 1.8 46 1907 January 1.8 47 1895 April 1.6 48 1909 February 1.5 49 1909 March 1.5 50 1901 December 1.3 51 1902 January 1.3 52 1904 December 1 53 1907 February 1 54 1904 February 0.8 55 1907 January 0.8 56 1907 January 0.8 57 1907 January 0.8 58 1908 December 0.8 59 1909 January 0.8 60 1909 December 0.8 61 1904 February 0.5 62 1907 December 0.5 63 1904 December 0.3 64 1904 December 0.3 65 1909 January 0.3 66 1909 January 0.3 67 1895 April 0.2 68 1908 December 0.2 69 1909 March 0.2 70 1909 March 0.1

Our "heaviest" snow of the day here along the peaks of the Welsh Mountain!! I saw multiple flakes!!

Most reliable IMHO and relatively affordable model is the Vantage Vue....although I do like the Tempest with no moving parts etc.

Now you say "not that it really matters" after saying Coatesville totals were inflated every time and now proven wrong not once.....but 70 times in the period you assured us was each and every time. You should stick to your LV history - your story and goalposts seem to keep changing LOL!! Do you have any good history to share with us about the LV or just call folks names??

Not to keep piling on the facts but: From 1894 to 1909 Coatesville averaged 48.0" of snow vs West Chester at 40.3 (+19% difference) For the entire period of record with Mr Gordon as observer (1894 to 1930) - Coatesville averaged 40.8" of snow vs West Chester at 32.3" (+26%) For the entire period of common records (89 years) 1894 to 1982 (prior to the move to the higher elevation) - Coatesville averaged 31.0" vs West Chester at 26.1" (+19%) Yes it does snow more in Coatesville vs. West Chester and for that matter all other long running stations in Chester County

Facts presented just to keep this real and not let our LVwx post fake facts - I went back and did an analysis of all daily snow totals 1894 to 1909 against just 1 other Chester County station (West Chester) - the facts are Coatesville in reality actually reported LESS daily snow totals compared to West Chester on 70 days during that time frame 1894 to 1909.....last time I checked my math 70 times is not the every single time our LV friend imagined above.

To really illustrate the incredible variability in snow totals over very short distances. .I went back and captured just a few of some recent events and the approximate distance between reporting sites - using only final storm event NWS PNS reports from official observing sites and or trained spotters - some examples are 1 foot differences over just 6 short miles Jan 24, 2016 - Malvern PA 30.1" vs. Kennett Square 15.3" (16 miles) (+14.8") Feb 10, 2010 - East Nantmeal 26.8" vs. East Bradford 14.5" (6 miles)(+12.3") Feb 6, 2010 - Chester Springs 24.1" vs. East Nantmeal 18.3" (4.5 miles) (+5.8") vs. ABE Airport (7.7") = 16.4" December 30, 2000 - PHL 9" vs Glenmoore PA 1" - (28 miles)

LVwxHistorian certainly is far from civil....at the very least seems to like to insult folks. Fortunately he is an outlier from the typical respectful conversations we typically have here! It really is quite easy to have a fact based discussion which is all I provide to support the data. I have validated with surrounding data as good as we can find that the long standing records have stood the test of time for a reason. We cannot find enough data to overturn so we shall stick with the records as currently documented by long standing weather service/bureau observers.

Hi Matt - no doubt there is orographic lift that occurs which is why the western burbs report and average more snow than many areas further north. Folks can argue about snow totals but subtle changes of elevation and banding/convective elements in individual storms can make huge differences. So difficult to try and go back and rewrite history even 10 years after the fact....100 years later forget about it.....

I am sure there will be no changes to any records....not after 120 years! These records have stood the test of time!! I see KS reported 32" in the Feb 1899 storm - 2ft...3 ft either way a lot of snow fell in the county with typical large variability in individual storms as I have shown in the research

First Snow climatology for Chester County PA 12/6 = Average 1st measurable snow 10/29 - earliest 1/28/72 - latest (note no snow at all for 1972-73 (no snow fell between 2/24/72 and 12/17/73) December first snow = 62 times / November 1st snow - 48 times / January 1st snow - 14 times / October 1st snow - 2 times

Do you think folks get a little excited about snow? My Chester County Weather Facebook page has added 1,200 followers since yesterday!!

Good stuff!! really enjoying the research - I have also forwarded all the corroborating data to NCEI - plus still finding even more examples- plenty of food for thought for them!!

HI Birds - you are correct thanks for the kind words! most appreciated. My wife has tolerated my weather hobby for a long time - I tell her there are many worse hobbies a guy could have!!