ChescoWx Posted May 6 Share Posted May 6 Chances of rain will continue each and every day this week. The least chances are today and during the day tomorrow. Best rain chances are Thursday with Wednesday being the warmest day with temps in the 80's. Chester County records for today: High 94 degrees at Phoenixville (1930) / Low 28 degrees at Devault 1W (1954) / Rain 2.90" in Honey Brook (1989) Link to comment Share on other sites More sharing options...
zenmsav6810 Posted May 6 Share Posted May 6 Flying from PHL to MCO (Orlando) for a trade show. Hooping the weather works out for my flight tonight. Link to comment Share on other sites More sharing options...
RedSky Posted May 6 Share Posted May 6 .90" event Link to comment Share on other sites More sharing options...
Rtd208 Posted May 6 Share Posted May 6 Current temp is 74 here. Pretty nice day out there. Link to comment Share on other sites More sharing options...
KamuSnow Posted May 6 Share Posted May 6 4 hours ago, zenmsav6810 said: Flying from PHL to MCO (Orlando) for a trade show. Hooping the weather works out for my flight tonight. Good luck! Link to comment Share on other sites More sharing options...
ChescoWx Posted May 7 Share Posted May 7 Only made it down to 59 degrees here in EN. Today should be the best weather day of the week with sun and temps reaching the mid to upper 70's. Rain chances return by late tonight. Chester County area records for today: High 99 degrees at Phoenixville (1930) / Low 28 at Coatesville (1974) / Rain 2.74" Coatesville (1908) Link to comment Share on other sites More sharing options...
Rtd208 Posted May 7 Share Posted May 7 Really nice day out there. Current temp 83 Link to comment Share on other sites More sharing options...
ChescoWx Posted May 7 Share Posted May 7 With the summer season quickly approaching and the fact I now have access to much more station data then in the past. I went back to the complete Chester County PA data set of 26 stations with some having data back to the 1890's. I wanted to see if the number of hot days as defined by 90 degrees is increasing or decreasing here in Chester County?? I separated the stations by their elevation above sea level as we know with increasing elevation there are far less days that surpass 90 degrees. Of the 26 stations in the data the majority (17) stations are sited below 500 ft above sea level (ASL) While only 9 stations are sited at above 500 ft ASL. Going forward with the data here in the 2020's we will still have the majority of stations (11) that are located at lower elevations while 7 of the current stations are in the relatively higher spots. The data which is analyzed by average number of 90 degree days by decade is quite clear that the number of 90 plus days is decreasing at all elevations. In fact the 2020's to date are trending as the 2nd least 90+ days at the lower spots and at the lowest level in the higher spots. Can you imagine back when we really had hot summers like in the 1930's through 1950's how tough it must have been without air conditioning?? 1 Link to comment Share on other sites More sharing options...
Rtd208 Posted May 8 Share Posted May 8 High for the day yesterday was 85 here. Current temp 65 Link to comment Share on other sites More sharing options...
Birds~69 Posted May 8 Share Posted May 8 66F/64F Looks like a early morning thump... Link to comment Share on other sites More sharing options...
Birds~69 Posted May 8 Share Posted May 8 Rain and mean thunder sounds...no lightning. 65F Link to comment Share on other sites More sharing options...
Hurricane Agnes Posted May 8 Author Share Posted May 8 First "steamy windows" day of the season this morning. Thunderstorm rolling through with 0.40" per hr rates. Ended up with a high of 74 Monday after a 56 low and a high of 81 yesterday after a 60 low. From Sat. - Mon., I picked up 0.74" of much needed rain. Currently 66 with dp 66 and moderate rain from a thunder shower and 0.07" in the bucket. Link to comment Share on other sites More sharing options...
Birds~69 Posted May 8 Share Posted May 8 .....annnndd it's outta here. Birds chirping their heads off. 65F Link to comment Share on other sites More sharing options...
ChescoWx Posted May 8 Share Posted May 8 0.22" of rain this AM from the thunderstorm...briefly lost power. Should see sun returning today and our warmest day for at least the next couple weeks as temps make a run at the 80's today. By contrast on Friday we will struggle to escape the 50's for high temps. Chester County records for today: High 98 degrees at Phoenixville (1930) / Low 29 degrees at both West Chester and Morgantown (1974) / Rain 2.90" Coatesville 2W (1992) Link to comment Share on other sites More sharing options...
ChescoWx Posted May 8 Share Posted May 8 So I have updated the average number of 90 degree days to include the Philadelphia International Airport and overlaid that analysis over the Chester County data shared yesterday. You can clearly see the impact of the urban heat island (UHI) on the official Philadelphia climate site (the red line is the rapid heat growth). While 90 degrees are declining in Chester County they are rapidly increasing in frequency at the airport. So far in the 2020's PHL is averaging more than 3 weeks of additional 90+ days than here in Chester County. In 1940 when weather observations started at the airport it's footprint was only around 300 acres. Since 1940 the PHL Airport has expanded to over 2,600 acres. That is a staggering 2,078% growth. The significant impact to the official Philadelphia climate data due to this rapid expansion is clearly illustrated below. Especially starting in 1970 when we began to see huge increases in the addition of asphalt, concrete and taxi ways. In 1970 alone the airport added 64% more gates and buildings. Just 2 years later in 1972 runways were expanded to handle 747's. Then 4 new terminals were added in 1977 and parking spaces were increased from 5k to 20k. Rapid increase in asphalt continued in 2002 with an additional 8 miles of pavement added to the site. In 2005 runways were increased and as of today there is now 33,000 feet of asphalt runway at the airport. Next time you see the reporting of 90 degree days on TV.....keep in mind where those figures are coming from - it is not where people live. 1 Link to comment Share on other sites More sharing options...
RedSky Posted May 8 Share Posted May 8 .30" this am Potential record low max high on Friday as the cold atmospheric bubble days continue in an overall warmer regime. Link to comment Share on other sites More sharing options...
RedSky Posted May 8 Share Posted May 8 GFS has temperatures Fri-Sunday in the 40's the majority of the time lol That might be colder than May 2020 minus the snow I got * that is much colder for highs in a three day stretch than May 2020 wow 1 Link to comment Share on other sites More sharing options...
Birds~69 Posted May 9 Share Posted May 9 7 hours ago, RedSky said: GFS has temperatures Fri-Sunday in the 40's the majority of the time lol That might be colder than May 2020 minus the snow I got * that is much colder for highs in a three day stretch than May 2020 wow Friday looks to be the coldest. Sat and Sunday will be below normal but not as crazy... 70F at 11:25pm Link to comment Share on other sites More sharing options...
Rtd208 Posted May 9 Share Posted May 9 High for the day was 87 here. Current temp 73 Link to comment Share on other sites More sharing options...
RedSky Posted May 9 Share Posted May 9 GFS continues to show 40's on Saturday vs other guidance. Link to comment Share on other sites More sharing options...
ChescoWx Posted May 9 Share Posted May 9 An increasingly chilly day with the wind becoming onshore from the chilly atlantic waters today. Shower chances increase this afternoon. Tomorrow will be a very raw day for May with temps in the higher spots of Chester and Berks counties struggling to escape the 40's to around 50 degrees. Saturday looks like the driest day of the weekend. But the weekend as a whole will not be a washout. Chester County wide records for today: High 96 degrees at Phoenixville (1936) / Low 25 degrees at Coatesville 1SW (1947) / Rain 2.46" at Glenmoore (1992) Link to comment Share on other sites More sharing options...
RedSky Posted May 9 Share Posted May 9 GFS has a midnight high near 50F and stays in the 40's tomorrow and Sunday. Briefly tops out in the low 50's Saturday. Link to comment Share on other sites More sharing options...
RedSky Posted May 9 Share Posted May 9 Here comes a weekend normal for March or November 1 1 Link to comment Share on other sites More sharing options...
JTA66 Posted May 9 Share Posted May 9 Heavy virga, 64F/DP 54F Link to comment Share on other sites More sharing options...
Birds~69 Posted May 9 Share Posted May 9 6 hours ago, RedSky said: Here comes a weekend normal for March or November Praise Jesus. Quickly mowed the lawn late this afternoon and chopped lumber (fire pit/BBQ) for the upcoming chilly weekend weather. Critters/creatures must be confused at this point....even my A/C or heater don't know which will be used on a daily basis. Good stuff. 64F/Cloudy Link to comment Share on other sites More sharing options...
Birds~69 Posted May 10 Share Posted May 10 2 hours ago, JTA66 said: Heavy virga, 64F/DP 54F It caved, rain here. If winter...we would have be tortured for 6 hours plus. 57F/Rain Link to comment Share on other sites More sharing options...
Birds~69 Posted May 10 Share Posted May 10 Other stuff from the W moving in....57F Link to comment Share on other sites More sharing options...
Albedoman Posted May 10 Share Posted May 10 the high tomorrow barely reaching the 50's. That has to be the coldest high temp I've seen this late in May in a decade or more. Have to turn on the heat maybe. The extensive virga today was a no laughing matter. We finally have some rain now. I can breathe again. Where in the hell are my t-storms? A mid spring without t- storms is like having ten snow virga events in a row. Fustrating 1 Link to comment Share on other sites More sharing options...
Rtd208 Posted May 10 Share Posted May 10 Very mid fall like day out there Picked up 0.33” of rain so far today. Current temp 50 Link to comment Share on other sites More sharing options...
ChescoWx Posted May 10 Share Posted May 10 0.30" of rain here in East Nantmeal since yesterday with 0.17" since midnight. Today will be unseasonable chilly and wet day with temps in some higher spots remaining in the 40's. A brief break tomorrow with some sun before rain returns late at night into Sunday. One more nice day on Monday before showers return for much of the remainder of the week. Chester County daily records for today: High 94 degrees at Coatesville 1SW (1896) / Record low 27 degrees at Coatesville 1SW and Devault 1W (1966) / Rain 1.76" at Coatesville 2W (1990) Link to comment Share on other sites More sharing options...
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