MGorse Posted Sunday at 12:12 PM Share Posted Sunday at 12:12 PM Nippy to start the day with a low of 37F. 1 Link to comment Share on other sites More sharing options...
ChescoWx Posted Sunday at 01:15 PM Share Posted Sunday at 01:15 PM We saw 2 stations across the Chesco area record their first freeze. Below is some season lows to date history through today. 1 Link to comment Share on other sites More sharing options...
soadforecasterx Posted Sunday at 04:00 PM Share Posted Sunday at 04:00 PM 2 hours ago, ChescoWx said: We saw 2 stations across the Chesco area record their first freeze. Below is some season lows to date history through today. Loving your results. I recorded a low of 38.3. Pretty spoton to what you have posted. Honestly was a little let down I only got down to 38. 1 Link to comment Share on other sites More sharing options...
RedSky Posted Sunday at 05:02 PM Share Posted Sunday at 05:02 PM low was 32F light freeze 2 Link to comment Share on other sites More sharing options...
Hurricane Agnes Posted Sunday at 06:07 PM Share Posted Sunday at 06:07 PM My low was 39 here in NW Philly this morning with a dp in the low 30s. Temp has recovered to 56 (my high so far) with dp 28. Am not ready to bust out the humidifiers yet. 2 Link to comment Share on other sites More sharing options...
ChescoWx Posted Monday at 07:49 PM Share Posted Monday at 07:49 PM Link to comment Share on other sites More sharing options...
Hurricane Agnes Posted Monday at 11:57 PM Share Posted Monday at 11:57 PM Bottomed out at 38 this morning and had a high of 65. Definitely fall weather! Currently 50 with dp 46. Link to comment Share on other sites More sharing options...
Birds~69 Posted Tuesday at 01:05 AM Share Posted Tuesday at 01:05 AM Hurts out for the season. Accu Weather 5-15" Winter forecast and now this. Good grief... 6abc promotes Adam Joseph to Chief Meteorologist for Action News https://6abc.com/post/6abc-promotes-adam-joseph-chief-meteorologist-action-news/19956298/ 2 Link to comment Share on other sites More sharing options...
Birds~69 Posted Tuesday at 01:48 AM Share Posted Tuesday at 01:48 AM Accu Weather doesn't even mention Wash DC because it's so pathetic... Link to comment Share on other sites More sharing options...
Birds~69 Posted Tuesday at 01:52 AM Share Posted Tuesday at 01:52 AM 3 minutes ago, Birds~69 said: Accu Weather doesn't even mention Wash DC because it's so pathetic... AccuWeather little sidenote to cover their ass... Link to comment Share on other sites More sharing options...
RedSky Posted Tuesday at 04:51 AM Share Posted Tuesday at 04:51 AM 3 hours ago, Birds~69 said: Hurts out for the season. Accu Weather 5-15" Winter forecast and now this. Good grief... 6abc promotes Adam Joseph to Chief Meteorologist for Action News https://6abc.com/post/6abc-promotes-adam-joseph-chief-meteorologist-action-news/19956298/ Called it 1 Link to comment Share on other sites More sharing options...
Birds~69 Posted Tuesday at 05:55 AM Share Posted Tuesday at 05:55 AM 1 hour ago, RedSky said: Called it Nothing to be proud of son. Your could have developed a 24hr treatment/cure for blood clots or something worthwhile. Makes you wonder what took Ch6 so long? He wrote on FB today big announcement at 6pm. Some were hoping retirement...some thought he was going straight. https://www.facebook.com/share/p/1EWLe2HbiM/ Link to comment Share on other sites More sharing options...
ChescoWx Posted Tuesday at 12:37 PM Share Posted Tuesday at 12:37 PM Today we should see highs from mid 60's in ridge locations to the low 70's in valley spots with lows tonight in the upper 30's to low 40's. It should be one of the better weather weeks of the year with almost no chance of rain. By Saturday morning we should see lows in the low to mid 30's with a freeze possible in the colder valleys! Temperatures will be near normal through Thursday but by Friday we drop to about 5 degrees below normal, before we return to near normal by Sunday. Of note 7 years ago today back in 2019 Chester County was at the start of a 3 day storm that left as much as 1.56" of rain at Coatesville 1E. This was the remnants of Tropical Storm Nestor which tracked within about 190 miles of the county. Link to comment Share on other sites More sharing options...
ChescoWx Posted Tuesday at 06:29 PM Share Posted Tuesday at 06:29 PM Almost a 20 degree spread in morning low temperatures today within just a few miles across the area this morning. Elevation and terrain impacts. Link to comment Share on other sites More sharing options...
ChescoWx Posted Tuesday at 07:19 PM Share Posted Tuesday at 07:19 PM I have added some additionals stations within 3 miles of the Chester County border to enhance our climate data. The support and rationale is included in our latest study on the website. Thanks! https://chescowx.com/chester-county-area-3-mile-rule/ 1 Link to comment Share on other sites More sharing options...
ChescoWx Posted Wednesday at 01:48 PM Share Posted Wednesday at 01:48 PM Today we should see highs from low 60's in ridge locations to the mid 60's in valley spots with lows tonight in the upper 30's to low 40's. It should be one of the better weather weeks of the year with almost no chance of rain. By Sunday morning we should see lows in the low to mid 30's with a freeze possible in the colder valleys! Temperatures will be near normal through Friday but this weekend we drop to about 5 degrees below normal, before we return to near normal by Monday. Of note 82 years ago today back in 1944 the Chester County Area was at the start of a 2 day storm that left as much as 1.63" of rain at Phoenixville 1E. This was the remnants of an unnamed hurricane which tracked within about 120 miles of the county. Link to comment Share on other sites More sharing options...
Birds~69 Posted Wednesday at 02:10 PM Share Posted Wednesday at 02:10 PM Raking leaves? Trees are generally still full w/some signs of color change around here. If a human actually included/wrote that...he/she is clueless. 56F 2 2 Link to comment Share on other sites More sharing options...
ChescoWx Posted Wednesday at 07:53 PM Share Posted Wednesday at 07:53 PM Over the last 25 years, Since 2001 PHL Airport warming is statistically clear in both its raw and NOAA-adjusted records. By comparison here in the nearby philly burbs of Chester County PA our warming is less or about 40% smaller than the PHL heat island. The warming across Chester County has not been statistically significant using either the raw or NCEI adjusted data over the last 25 years! The gap between the two (+0.34°F/decade) is consistent with an urban/airport effect. One more point of interest: NOAA’s data adjustment only trims PHL’s trend slightly (0.86 → 0.78). So, importantly whatever UHI warming that is in the airport record over this window, the homogenization is removing very little of it! Link to comment Share on other sites More sharing options...
ChescoWx Posted yesterday at 01:55 PM Share Posted yesterday at 01:55 PM Today we should see highs from low 60's in ridge locations to the mid 60's in valley spots. Temperatures will fall from the low 50's at midnight to lows in the upper 30's to mid 40's by morning. Our stretch of beautiful autumnal weather continues through at least the next week! With little to no chance of rain. By Sunday morning we should see lows in the low to mid 30's with a freeze possible in the colder valleys! Temperatures will run about 5 degrees below normal through Sunday before we return to near normal by Monday, but by Tuesday we warm to about 3 degrees above normal. Of note 82 years ago today back in 1944 the Chester County Area was on the last day of a 2 day storm that left as much as 1.63" of rain at Phoenixville 1E. This was the remnants of an unnamed hurricane which tracked within about 120 miles of the county. Link to comment Share on other sites More sharing options...
ChescoWx Posted 9 hours ago Share Posted 9 hours ago Today we should see highs from upper 50's in ridge locations to the low 60's in valley spots. The NWS has issued a freeze watch for tonight with temperatures near freezing or below in valley locations to just above freezing on the ridge tops. By Sunday morning we should see lows in the low to mid 30's with a freeze possible in the colder valleys! Temperatures will run about 5 degrees below normal this weekend before we return to near normal by Monday, but by Tuesday we warm to about 4 degrees above normal. We look to stay dry through next Friday according to the ChescoWx model. Of note 154 years ago today back in 1872 the Chester County Area was at the start of a 4 day storm that left as much as 2.62" of rain at Pocopson. This was an unnamed tropical storm which tracked within about 50 miles of the county. Link to comment Share on other sites More sharing options...
ChescoWx Posted 4 hours ago Share Posted 4 hours ago For those on Team Snow while rare we have had significant snowstorms as early as October. Below are our top such snowstorms. The biggest one occurred just 15 years ago back in 2011. On the website https://chescowx.com/top-snowfalls-by-month/ you do this for all months and even drill down into each storm to see the individual amounts across the area. Link to comment Share on other sites More sharing options...
ChescoWx Posted 1 hour ago Share Posted 1 hour ago Happy Friday! In the past I used to have some folks even here on Americanwx suggest my East Nantmeal Davis VP2 runs too cool (some here used to say the East Nantmeal Icebox etc.) thinking I might have a siting or equipment issue, I ran the numbers. I would welcome any pushback on the method or the results. I used only stations that report on a midnight to midnight day, so morning and evening COOP observation times do not skew the comparison. That gives 20 Chester County Area stations: the DEOS network, KPTW, KMQS, KOQN and the Avondale 2N Climate Reference Network site. Against Avondale USCRN, the best reference we have, over 7,198 days with data from both stations (2007 to now), my highs run 1.4 degrees cooler and my lows run 1.4 degrees warmer. The average difference is +0.01 degrees. That is the classic upland elevation based signature at 678 FT: cooler afternoons, and milder nights as cold air drains off the hill. A poorly sited station usually shows the opposite, with cold nights in a frost hollow or cool afternoons only on sunny days from shade. Across the full network since 2012 my average is 0.68 degrees below the network mean. The USCRN site is 0.63 below, and Warwick DEOS, my nearest neighbor, is 0.56 below. Daily highs line up with elevation at about 5 degrees per 1,000 ft. Mine sit 0.7 degrees below that line, about where the other aspirated sensors (USCRN and the KPTW ASOS) also sit. A cheap passive-shield station on a pole right next to my Davis reads highs 3 degrees warmer, and 3.3 degrees warmer on sunny days. Most backyard stations people compare against use passive shields, so an aspirated sensor will usually look cool next to them in the afternoon. Let me know if any questions or if you see anything that does not hold up (see detail below) as I have always strived to show the most accurate possible data for the climate here in good old Chesco! Link to comment Share on other sites More sharing options...
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