ChescoWx

So let's go ahead and use the adjusted NCEI average annual temperatures for Chester County PA from NCEI this century. These are the adjusted altered figures Charlie....what does this tell us? Even after adjustments by NOAA PHL is indeed warming almost 70% faster than Chester County PA - the PHL UHI is a problem even NOAA shows it....

Bad assumption only using the warmest station which is Phoenixville 1E - to better determine the true Chesco average you should add in the nice mix we have today of high and low elevations to capture the true average Chester County average temperature. Heck the averages I derive from these stations is in reality supports almost exactly the calculated average temperatures posted by NCEI on their site for their recent Chester County PA average temperatures. If NCEI develops an average temperature for the county that is statistically the same as what I calculate from the raw stations. See below since 2004. NCEI must think the mix of stations I use is strong correct?

Happy Memorial Day Weekend! Unfortunately weather wise it will be wet and almost record cold especially tomorrow afternoon. Most models now keep temperatures below 50 degrees tomorrow afternoon - this would break the Chester County record for low maximum temperatures for the date set back in 1982. There is a chance it could be the coldest late season high temperature on record. With gusty winds it will feel a lot more like early March than Memorial Day Weekend. Rain-wise models show between an inch to as much as 3.5" of much needed rain!

Happy Memorial Day Weekend! Unfortunately weather wise it will be wet and almost record cold especially tomorrow afternoon. Most models now keep temperatures below 50 degrees tomorrow afternoon - this would break the Chester County record for low maximum temperatures for the date set back in 1982. There is a chance it could be the coldest late season high temperature on record. With gusty winds it will feel a lot more like early March than Memorial Day Weekend. Rain-wise models show between an inch to as much as 3.5" of much needed rain!

Your amateur altered facts and fake math do not change the facts. To just prove it to you yet again - let's simply take the next period of time after all those changes that you think made such an impact. Let's target the modern era from 1970 through 2025. Again clear as it can be that PHL is clearly and statistically warming faster than Chester County both the trend line and the slope prove this as fact. The gap due to PHL UHI continues to widen - just wait to see by 2036 how much further apart these get!

Fortunately Charlie we have the facts and math to prove clearly how much faster PHL is warming than Chester County PA from 1941 through 2025. Since the growth rate not just to the eye but based on the slope certainly shows that PHL has a much steeper warming growth line than Chester County. Charlie as you can plainly see it is not even close. PHL is warming much faster than Chesco! The facts show this gap has never been wider....well not until we finish this year!

Who is ready for some weather whiplash? After one more unseasonably warm day today we flip to unseasonably chilly starting tomorrow and lasting through at least Sunday. Tomorrow's afternoon temperatures are likely to be more than 30 degrees chillier than today with widespread 50's. We turn even chillier by Saturday with some models hinting at record low maximum temperatures with highs struggling to escape the cold 40's during the afternoon. Some much-needed rain looks to arrive later today and continue off and on through tomorrow. More steady rain arrives Friday night and continues through Saturday. This combination of rain and cold will make Saturday feel more like a raw early March day than Memorial Day Weekend.

Who is ready for some weather whiplash? After one more unseasonably warm day today we flip to unseasonably chilly starting tomorrow and lasting through at least Sunday. Tomorrow's afternoon temperatures are likely to be more than 30 degrees chillier than today with widespread 50's. We turn even chillier by Saturday with some models hinting at record low maximum temperatures with highs struggling to escape the cold 40's during the afternoon. Some much-needed rain looks to arrive later today and continue off and on through tomorrow. More steady rain arrives Friday night and continues through Saturday. This combination of rain and cold will make Saturday feel more like a raw early March day than Memorial Day Weekend.

LOL! One man's mental illness is another man's passion and fun!! I really do love this thread and have a blast with the data and doing point counterpoint with Charlie!! Great stuff! Thanks for participating AdMC!!!

PHL still accelerating well above all of Chesco

Almost there up to 89.3 high for the day - nearby Glenmoore DEOS station at 89.8....I think we can do it today!!

Here in the NW Philly burbs of Chester County in East Nantmeal (elev. 700 feet ASL) we have hit a high so far today of 88.0 degrees. We have still not hit 90 degrees here this year. I have been at this location for this my 23rd summer. Over those years I have only recorded a 90 degree temperature 76 times or around 3.5 times a typical summer season. To put that in persective the Philadelphia International Airport has in just the last 3 summers recorded a 90 plus reading a whopping 92 times! During the last 22 years PHL is averaging a 90+ reading 32 times a season.

Here in the NW Philly burbs of Chester County in East Nantmeal (elev. 700 feet ASL) we have hit a high so far today of 88.0 degrees. We have still not hit 90 degrees here this year. I have been at this location for this my 23rd summer. Over those years I have only recorded a 90 degree temperature 76 times or around 3.5 times a typical summer season. To put that in persective the Philadelphia International Airport has in just the last 3 summers recorded a 90 plus reading a whopping 92 times! During the last 22 years PHL is averaging a 90+ reading 32 times a season.

Today will be the hottest day of our brief warm up with today reaching the 90's in all areas - maybe even in the higher spots like here in East Nantmeal. This will however be nowhere close to record levels with the mid to upper 90’s record heat for this date set way back in 1962 remaining safe. Tomorrow will be several degrees cooler and may not reach 90 in all areas. Rain chances will be ramping up with an approaching cold front tomorrow later in the day and will continue through Sunday. Some models are hinting at some of the most beneficial rains we have had in quite some time. We turn chillier than normal for the Memorial Day weekend with highs likely to remain in the 50's to near 60 degrees both Friday and Saturday. The area farmers and green thumbs have their fingers crossed even if it could impact some holiday plans.

Today will be the hottest day of our brief warm up with today reaching the 90's in all areas - maybe even in the higher spots like here in East Nantmeal. This will however be nowhere close to record levels with the mid to upper 90’s record heat for this date set way back in 1962 remaining safe. Tomorrow will be several degrees cooler and may not reach 90 in all areas. Rain chances will be ramping up with an approaching cold front tomorrow later in the day and will continue through Sunday. Some models are hinting at some of the most beneficial rains we have had in quite some time. We turn chillier than normal for the Memorial Day weekend with highs likely to remain in the 50's to near 60 degrees both Friday and Saturday. The area farmers and green thumbs have their fingers crossed even if it could impact some holiday plans.