ChescoWx

Maybe an even better example of the Urban Heat Island Problem at PHL Airport is to compare the airport to NWS COOP observations at Octoraro Lake on the SW border of Chester County at about 40 nautical miles due west of the airport. Octoraro Lake is a relative low elevation spot (260 ft asl) and that NWS COOP station is clearly seeing decreasing heat waves while PHL continues to have increasing "heat waves". The only material difference is rural vs UHI

Welp except for what you have stated before were the multiple moves from a relatively more urban locale to rural at Coatesville 1SW and of course the increase in elevation with the 1983 move to Coatesville 2W and then over to KMQS.......

Even the longest running continuous and warmest station in Chester County at Phoenixville has a clear trend toward less of the so called "heat waves"

Even the longest running and warmest station in Chester County at Phoenixville has a clear trend toward less of the so called "heat waves"

As we get into the summer months lower elevation (<450 ft asl) areas of Chester County PA will see at least one heat wave (defined as 3 or more consecutive days with highs at 90 degrees or above) while the relatively higher ridge locations (>600 ft asl) only average a heat wave every couple of years or so. Below sorted by highest to lowest elevation is a ranking of all reporting stations since 2000 with their recorded heat waves. Our lowest elevation spot at Phoenixville averages a whopping two to four times the number of heat waves as almost all other locations across the county.

As we get into the summer months lower elevation (<450 ft asl) areas of Chester County PA will see at least one heat wave (defined as 3 or more consecutive days with highs at 90 degrees or above) while the relatively higher ridge locations (>600 ft asl) only average a heat wave every couple of years or so. Below sorted by highest to lowest elevation is a ranking of all reporting stations since 2000 with their recorded heat waves. Our lowest elevation spot at Phoenixville averages a whopping two to four times the number of heat waves as almost all other locations across the county.

As we get into the summer months lower elevation (<450 ft asl) areas of Chester County PA will see at least one heat wave (defined as 3 or more consecutive days with highs at 90 degrees or above) while the relatively higher ridge locations (>600 ft asl) only average a heat wave every couple of years or so. Below sorted by highest to lowest elevation is a ranking of all reporting stations since 2000 with their recorded heat waves. Our lowest elevation spot at Phoenixville averages a whopping two to four times the number of heat waves as almost all other locations across the county.

Please do Cobalt that would be great! Thanks!!

Because it is where I live....LOL!

Inventing and mixing and matching data I see - Coatesville is not the most stable station for those 55 years....heck they only have 13 years at 1SW and 25 years at another location 2W. That only adds up to 38 years over a 55 year span. There has been no Coatesville COOP data for the last 20 years!!

Some outstanding weather on the way for much of the next week. We will stay a few degrees below normal until maybe warming up close to average temperatures for June by next weekend. In fact here in East Nantmeal May will finish as the 6th below normal month over the last 8 months dating back to last October. Rain chances look slim to none over the next week.

Some outstanding weather on the way for much of the next week. We will stay a few degrees below normal until maybe warming up close to average temperatures for June by next weekend. In fact here in East Nantmeal May will finish as the 6th below normal month over the last 8 months dating back to last October. Rain chances look slim to none over the next week.

A great stretch of weather with temperatures running at least a few degrees below normal for the end of May and the start of June. With highs in the upper 60's to lower 70's and nights in the upper 40's to lower 50's. No rain chances through the weekend.

A great stretch of weather with temperatures running at least a few degrees below normal for the end of May and the start of June. With highs in the upper 60's to lower 70's and nights in the upper 40's to lower 50's. No rain chances through the weekend.

Some more needed rain is crossing the area this morning. We are now up to over 85% of our normal rainfall for the year to date here in East Nantmeal with some spots now approaching average precipitation levels for the year. Today will be our last in a stretch of mainly cloudy and wet days. A beautiful end to the work week and upcoming weekend is on the way. Plenty of sun on the way with temperatures running a few degrees below normal as we close out May and move into June.

Some more needed rain is crossing the area this morning. We are now up to over 85% of our normal rainfall for the year to date here in East Nantmeal with some spots now approaching average precipitation levels for the year. Today will be our last in a stretch of mainly cloudy and wet days. A beautiful end to the work week and upcoming weekend is on the way. Plenty of sun on the way with temperatures running a few degrees below normal as we close out May and move into June.

Partly sunny today with a chance of some showers tomorrow morning. Today and tomorrow will be our warmest days of the week with temperatures a couple of degrees above normal for late May with highs in the upper 70's. A great stretch of weather begins on Thursday and through the weekend with sunny skies and with temperatures cooling to several degrees below normal by Saturday with highs near 70 degrees.

Partly sunny today with a chance of some showers tomorrow morning. Today and tomorrow will be our warmest days of the week with temperatures a couple of degrees above normal for late May with highs in the upper 70's. A great stretch of weather begins on Thursday and through the weekend with sunny skies and with temperatures cooling to several degrees below normal by Saturday with highs near 70 degrees.

Always fun to revisit our favorite climate alarmist - Mr. Al Gore to see how his "predictions" from The Inconvenient Truth have done with now 20 years of real data to assess his accuracy. Ice-Free Arctic Summers: Gore claimed there was a 75% chance the north polar ice cap would be completely ice-free in summer within five to seven years (by 2013-2016). The Arctic sea ice minimums have fluctuated but persist. Disappearing Snows of Kilimanjaro: He predicted that by 2016, Africa’s Mount Kilimanjaro would have no more snow. Measurable snow and glaciers remain on the mountain. Melting Glacier National Park: The film claimed that by 2021, Glacier National Park would lose all of its glaciers. The park's glaciers have shrunk, but they are still present, prompting changes to park signage. Escalating Hurricane Frequency: The documentary argued that global warming would cause a dramatic increase in the frequency and severity of hurricanes. Global data shows no trend of increasing frequency, and global accumulated cyclone energy has remained highly variable without a net upward trajectory.

But again the facts remain - either way we look at the data both raw and altered still shows a widening gap since 1970 - no reason to think that gap will not continue to widen.

Happy Memorial Day and thank you to those who serve our country. Still some showers around today before we finally see a return of the sun tomorrow. Temperatures both tomorrow and Wednesday will be several degrees above normal with highs not far from 80 degrees. We then see a return of cooler than normal temperatures but with mostly sunny days right through next weekend.

Happy Memorial Day and thank you to those who serve our country. Still some showers around today before we finally see a return of the sun tomorrow. Temperatures both tomorrow and Wednesday will be several degrees above normal with highs not far from 80 degrees. We then see a return of cooler than normal temperatures but with mostly sunny days right through next weekend.

No matter how you slice it using either the raw or altered adjusted data. The gap is clearly widening between PHL and Chester County

Since Tuesday a general 2.5" to 5.0" of very welcome rainfall has taken place across Chester County. West Grove 5.14" / West Bradford 4.39" / Kennett Square 4.32" / Longwood Gardens 4.22" / West Chester 3.97" / Nottingham 3.24" / Atglen 2.91" / Glenmoore 2.87" / Chester Springs 2.79" / East Nantmeal 2.62" and Warwick Twp. 2.48"

Since Tuesday a general 2.5" to 5.0" of very welcome rainfall has taken place across Chester County. West Grove 5.14" / West Bradford 4.39" / Kennett Square 4.32" / Longwood Gardens 4.22" / West Chester 3.97" / Nottingham 3.24" / Atglen 2.91" / Glenmoore 2.87" / Chester Springs 2.79" / East Nantmeal 2.62" and Warwick Twp. 2.48"