July 2020 General Discussions & Observations Thread

[qg_omega]

Fully cloudy here so far this morning

[Brian5671]

temps going nowhere here today with easterly flow 71 degrees at noon

[Eduardo]

2 hours ago, bluewave said:

The summer of an easterly component to the flow continues. Sat to Mon may be the first chance to see a 3 day 90°heatwave this summer. Another backdoor cold front on Tuesday will drop temperatures with more onshore flow. But the dew points are forecast to remain high through next Thursday. You can see how high pressure keeps popping up over New England limiting the duration of 90° day streaks here. So the best we have done is 2 days in a row.
 

Kennedy Intl   PTSUNNY   74  64  71 E7    
   

 

Should that pattern remain stable during the heart of hurricane season..... 

[bluewave]

15 minutes ago, Eduardo said:

Should that pattern remain stable during the heart of hurricane season..... 

Yeah, it was part of all the early season close in tropical activity. It will be interesting to see what things look like once we approach the peak of the season. Some of the seasonal models have an active pattern for the Gulf and East Coast.

 

[LongBeachSurfFreak]

21 minutes ago, bluewave said:

Yeah, it was part of all the early season close in tropical activity. It will be interesting to see what things look like once we approach the peak of the season. Some of the seasonal models have an active pattern for the Gulf and East Coast.

 

I’m thinking allot of late bloomers and Caribbean cruisers, which end up close to the east coast and in the gulf. Very interesting times on the way!

[SnoSki14]

1 hour ago, LongBeachSurfFreak said:

I’m thinking allot of late bloomers and Caribbean cruisers, which end up close to the east coast and in the gulf. Very interesting times on the way!

If the current pattern continues into Aug-Oct then yeah it'll definitely be concerning.

However often the bark is usually worse than the bite when it comes to LR forecasts. 2013 could still be in the cards too. 

[donsutherland1]

12 hours ago, mjr said:

I am curious as to why someone of your stature, knowledge and experience continues to use KNYC as a reflection of afternoon heat (no. of 90 degree days, heat wave occurrence) actually experienced in NY City. The legitimacy of the thermometer reading seems to have been severely corrupted by its placement in an area of dense foliage. When one thinks of NY City, midtown Manhattan comes to mind. The best proxies would seem to be LGA, EWR or TEB (or Central Park before 1996). Hypothetically, if those three sites were to record temperatures in the low to mid 90s while NYC only reached 89 because it might have rained two days earlier, and to thus conclude that New York City did not experience a heat wave, does not reflect reality. On this site, observers from Staten Island, Brooklyn and the Bronx all report significantly more 90+ days. In addition, to look at 2019 and conclude that NY City had only15 90 degree days, the same number as Boston, would be very misleading to an outside observer who did not know that LGA, EWR and TEB had 26-37 such days. A casual observer would certainly find it hard to believe and might form an inaccurate picture of actual NY summer conditions. KNYC is a proxy for its own small few hundred square foot area. It does not accurately represent any place else. To pretend otherwise risks legitimizing a false narrative of NYC summers

You make an important point. I have been using NYC due to its long climate record, which dates back to 1869. However, there has been a pronounced tendency for Central Park to show fewer 90 degree days than would be implied by regional data, individually and as an average (EWR-JFK-LGA-NYC).

Perspective 1:

During the 1959-2019 period, the regression equation in which the cases from JFK, LGA, and EWR were treated as independent variables and the Central Park number was the dependent variable, the Central Park number was less than predicted on 56% cases. However, since 2000, that number was less than predicted in 80% cases. The coefficient of determination was 0.728.

Perspective 2:

During the 1959-2019 period, the regression equation in which the 4-city average (which included Central Park) was the independent variable and the Central Park number was the dependent variable, the Central Park number was less than predicted on 56% cases. However, since 2000, that number was less than predicted in 95% cases. The coefficient of determination was 0.834. That Central Park had a tendency to have fewer 90 degree days than expected even when it was included in the mix highlights a microclimate that has been diverging from overall recent trends. Central Park is warming overall, but the relationship of its 90 degree days relative to the rest of the region has been  changing.

I will add a four-site average comprised of JFK-LGA-NYC-EWR that better reflects the overall regional impact. The coefficient of determination for that average against the independent variables of JFK, LGA, and EWR is 0.977 and the standard error is < 1.3.

Here is the data for 90° days for Select Cities (through July 14):

Albany: 10 (2019: 12 days)
Allentown: 8 (2019: 24 days)
Baltimore: 21 (2019: 59 days)
Boston: 1 (2019: 15 days)
Burlington: 12 (2019: 8 days)
Harrisburg: 11 (2019: 33 days)
Islip: 1 (2019: 8 days)
New York City-JFK: 4 (2019: 7 days)
New York City-LGA: 12 (2019: 26 days)
New York City-NYC: 6 (2019: 15 days)
Newark: 10 (2019: 27 days)
Philadelphia: 14 (2019: 35 days)
Washington, DC: 23 (2019: 62 days)

New York City-Newark Average: 8 (2019: 19 days)
...Expected: 8 (based on JFK-LGA-EWR data)

 

 

[forkyfork]

25 minutes ago, bluewave said:

12z Euro has upper 90s for the warm spots and dew points near 80 on Monday. This run is a little weaker with backdoor on Tuesday so the 90°+ streak may continue. Dew points remain high right into later next week.

 

another case where dewpoints keep us from hitting 100?

[CIK62]

80*(60%RH) here at 5pm.

The last 16 days of July according to the GFS is:    78/94 = 86 or +8.      7 'Lows' in the 80's and 4 100's seals the deal.     Don't sweat it.

[doncat]

80/68 temp split today.

[donsutherland1]

Cooler weather prevailed in the northern Mid-Atlantic region and another similar day lies ahead for tomorrow. Afterward, tempertures will rise. A widespread heat wave could overspread the region starting this weekend.

With a high temperature of 91°, Washington, DC registered its 20th consecutive day on which the temperature reached 90° or above. That is Washington's longest heat wave since July 29-August 18, 1988 when the temperature reached 90° or above on 21 consecutive days.

The current predominantly warmer than normal pattern will likely persist through at least August, paving the way for a solidly warmer than normal summer throughout the region. Occasional short-lived cool shots remain possible. One or more heatwaves are likely in July across the region, including New York City.

The ENSO Region 1+2 anomaly was -0.8°C and the Region 3.4 anomaly was -0.1°C for the week centered around July 8. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.72°C and the ENSO Region 3.4 anomaly has averaged -0.25°C. Neutral-cool conditions will likely prevail through mid-summer. The probability of the development of a La Niña event during late summer or early autumn has increased in recent weeks.

The last time the six-week moving average for ENSO Region 1+2 was as cold as the current figure during July or August occurred in 2013. Winter 2013-14 had neutral-cool ENSO conditions. January and February featured ENSO Region 3.4 anomalies that were -0.50°C or below.

The SOI was -12.62.

Today, the preliminary Arctic Oscillation (AO) figure was -0.803.

On July 14, the MJO was in Phase 2 at an amplitude of 1.571 (RMM). The July 13-adjusted amplitude was 1.708.

The MJO has been in either Phase 1 or Phase 2 for 45 consecutive days.

Last year, the MJO went through a very strong passage through Phase 1 during the closing days of May. About four weeks later, a warmer than normal pattern locked in and predominated through early autumn. This year, the MJO was in Phase 1 for 3 consecutive days with an amplitude of 1.500 or above during the June 1-3 period.

Last year, the SOI fell to -42.04 on June 22 when the MJO was in Phase 6. This year, the SOI plunged below -46.68 on June 5, its lowest level in more than three years. The dramatic plunge in the SOI could be the proverbial spark that kicks off a sequence of events leading to the development of a sustained warmer than normal period. The cases that saw both the MJO and SOI thresholds satisfied generally saw 10-20 days where the temperature reached or exceeded 90° in New York City during the July 1-August 31 period.

Based on sensitivity analysis applied to the latest guidance, there is an implied 78% probability that New York City will have a warmer than normal July. July will likely finish with a mean temperature near 79.3°.

 

[dWave]

It feels amazing outside tonight, 73 dew 65 and quite breezy. Havent felt "cool" in quite a while. A below 70 low temp seems on tap. 

As for DC, I think today was the chance to break the 90 streak but didnt happen. Thurs theres a small chance it doesn't make 90. If not then its many days ahead. Gonna be pushing 30+ days.

[SACRUS]

7/15

PHL: 89
New Brnswck: 83
TTN: 83
NYC: 82
LGA: 82
TEB: 82
EWR: 82
ACY: 81
JFK: 78
BLM: 78
ISP: 76

[mjr]

13 hours ago, donsutherland1 said:

You make an important point. I have been using NYC due to its long climate record, which dates back to 1869. However, there has been a pronounced tendency for Central Park to show fewer 90 degree days than would be implied by regional data, individually and as an average (EWR-JFK-LGA-NYC).

Perspective 1:

During the 1959-2019 period, the regression equation in which the cases from JFK, LGA, and EWR were treated as independent variables and the Central Park number was the dependent variable, the Central Park number was less than predicted on 56% cases. However, since 2000, that number was less than predicted in 80% cases. The coefficient of determination was 0.728.

Perspective 2:

During the 1959-2019 period, the regression equation in which the 4-city average (which included Central Park) was the independent variable and the Central Park number was the dependent variable, the Central Park number was less than predicted on 56% cases. However, since 2000, that number was less than predicted in 95% cases. The coefficient of determination was 0.834. That Central Park had a tendency to have fewer 90 degree days than expected even when it was included in the mix highlights a microclimate that has been diverging from overall recent trends. Central Park is warming overall, but the relationship of its 90 degree days relative to the rest of the region has been  changing.

I will add a four-site average comprised of JFK-LGA-NYC-EWR that better reflects the overall regional impact. The coefficient of determination for that average against the independent variables of JFK, LGA, and EWR is 0.977 and the standard error is < 1.3.

Here is the data for 90° days for Select Cities (through July 14):

Albany: 10 (2019: 12 days)
Allentown: 8 (2019: 24 days)
Baltimore: 21 (2019: 59 days)
Boston: 1 (2019: 15 days)
Burlington: 12 (2019: 8 days)
Harrisburg: 11 (2019: 33 days)
Islip: 1 (2019: 8 days)
New York City-JFK: 4 (2019: 7 days)
New York City-LGA: 12 (2019: 26 days)
New York City-NYC: 6 (2019: 15 days)
Newark: 10 (2019: 27 days)
Philadelphia: 14 (2019: 35 days)
Washington, DC: 23 (2019: 62 days)

New York City-Newark Average: 8 (2019: 19 days)
...Expected: 8 (based on JFK-LGA-EWR data)

 

 

Thanks for your detailed analysis. The numbers appear to be consistent with anecdotal evidence and intuitive assumptions. The number of 90 degree days has become one of the primary metrics for describing summer heat at any given location and this is the exact measurement that is most affected by the Central Park issue.

[etudiant]

A Central Park weather instrumentation site is in an enclosure just south of the small folly known as  The Castle. 

It is surrounded by shrubs and taller trees. It may be that this impacts the readings there.

[CIK62]

The next 8 days are averaging 86degs., or 8degs. AN.

Month to date is  +2.3[78.5].       Should be +4.3[81.1] by the 24th.

71*(72%RH)here at 6am, scattered clouds.         75*(65%RH) by Noon. 

 

[wdrag]

Good Thursday morning American Weather!  I'm out of the daily details on 90+ prediction. It's coming this weekend and difficult to believe that we will avoid 105HI here sometime between Monday the 20th and Sunday the 26th  (modeling may tend to be extreme but my ideal of 850T at least 21C at 12z for potential 100F seems a best fit for next weekend, if some of the models are accurate??-zz GGEM-GFS). 

Convection: None yesterday except extreme s NJ and ~ PHL.  Friday morning: Think at a minimum scattered showers and probably isolated thunderstorms 5AM-Noon in our NYC forum. Elevated based convection. WAA and 850MB frontogenesis (FGEN).. PWAT increase to 1.8"

Sunday even-night? Maybe a thunderstorm se NYS/sw CT?

Monday: PWAT 2", KI modeled to near 38, 2500J.  Looks prime to me for scattered big storms with a trough nearby. Is it capped at 700MB?? Suspect not and mid level lapse rates may be interestingly large for svr potential per 00z/16 GFS modeling. 

Tuesday: Potential WAA big gully washers (FF)-especially central NJ southward where very large CAPE and decent mid-level lapse rates. Capped near 700MB? PWAT NYC down to 1.7 so action may be mostly s of I80?

Wednesday: PWAT modeled near 2.1", 3000J, KI 38 and maybe this is Long Island breeze intersections as well as interior developments. Should be interesting.

Thursday: Possibly not quite as potent as Wednesday.

In summary: while many places will miss the big storms including FF/damaging wind, it should still be interesting for parts of the area...details and confidence left to the start of day boundaries/pooling of high indices. 638A/16

 

 

[SnoSki14]

56 minutes ago, JoshSnow said:

This is the type of weather I wait for all year around. It has to be the best weather of the year. Hopefully we break some records! I want 102 with humidity of 65 and dew point of 78

Just go to a sauna then. 

[PB-99]

It`s coming ! 

 

 

 

 

[dWave]

On 7/15/2020 at 2:46 AM, mjr said:

I am curious as to why someone of your stature, knowledge and experience continues to use KNYC as a reflection of afternoon heat (no. of 90 degree days, heat wave occurrence) actually experienced in NY City. The legitimacy of the thermometer reading seems to have been severely corrupted by its placement in an area of dense foliage. When one thinks of NY City, midtown Manhattan comes to mind. The best proxies would seem to be LGA, EWR or TEB (or Central Park before 1996). Hypothetically, if those three sites were to record temperatures in the low to mid 90s while NYC only reached 89 because it might have rained two days earlier, and to thus conclude that New York City did not experience a heat wave, does not reflect reality. On this site, observers from Staten Island, Brooklyn and the Bronx all report significantly more 90+ days. In addition, to look at 2019 and conclude that NY City had only15 90 degree days, the same number as Boston, would be very misleading to an outside observer who did not know that LGA, EWR and TEB had 26-37 such days. A casual observer would certainly find it hard to believe and might form an inaccurate picture of actual NY summer conditions. KNYC is a proxy for its own small few hundred square foot area. It does not accurately represent any place else. To pretend otherwise risks legitimizing a false narrative of NYC summers

NWS has long been aware, but for historical reasons they'd rather not touch it. I've also seen articles of them basically saying yes its true but we have plenty of nearby climate sites more representative..implying no one is forcing the media etc to hold Central Park as the holy grail of weather obs.  imo it wouldn't hurt to trim the trees immediately around it, it wouldn't be perfect but a reasonable improvement. NWS doesn't want to deal with having put a asterisk on weather records. I can understand that since its such a long running site, but at least highlight the surrounding sites more..but that's more a local news thing though. 

 

Story originally reported on WABC-TV and WABC.com (now "File Not Found")
Original text available below:

Central Park Weather: Vegetative Overgrowth Affecting Weather Readings - WABC-TV

(New York-WABC, August 22, 2003) - Forecasting the weather is not easy.
Government equipment can often be blamed for giving faulty weather
information. As Bill Evans explains, a big culprit may be some of the
equipment buried in Central Park.

Rainfall, snowfall, and the temperature are all vital information
recorded 24 hours a day at the weather station located in the heart of
Central Park.

But meteorologists like Michael Schlacter have serious concerns about the
accuracy of the stations data. It sits amid overgrown vegetation and he
says thats the problem. The leaves can trigger snow gauges and trees can
warp rain and wind measurements. On this hot day, a temperature gauge is
in the shade instead of direct sunlight.

Michael Schlacter, Weather 2000: "Its kind of like driving a car
without a speedometer, odometer, and gas gauge. You are running with
false information."

The weather instruments at Belvedere Castle have long adorned the top.
There used to be a government meteorologist here in the city to keep an
eye on them. But now the nearest meteorologist is 60 miles that way.

But National Weather Service meteorologists say they knew the weather
readings in the park would never be as keenly accurate as the ones at
the airports where guidelines prevent foliage from being within 100 feet
of the station.

Schlacter: "We knew that at times we would have flaky readings, that
leaves would fall in gauges, that we would have problems with
visibility sensors."

[NWS Meteorologist-in-Charge Michael] Wyllie says the weather station is
there because it was historically significant to maintain its presence
in the park.

He says theres been a lot of growth because of the wet spring at so much
in fact that temperatures have routinely been recorded lower in the park
than at the airports.

Wyllie: "We are actually having a micro climate system there because of
the vegetation."

Imperfect perhaps but nonetheless the system provides the official record
of weather for the country's largest city. And Michael Schlacter says
its a city that deserves better.

Schlacter: "I think New Yorkers deserve a lot better, and I think they
deserve the best weather station money can buy."

 

 

I'm pretty sure they are sick of here the same complaints lol

 

 

[wdrag]

17 minutes ago, dWave said:

NWS has long been aware, but for historical reasons they'd rather not touch it. I've also seen articles of them basically saying yes its true but we have plenty of nearby climate sites more representative..implying no one is forcing the media etc to hold Central Park as the holy grail of weather obs.  imo it wouldn't hurt to trim the trees immediately around it, it wouldn't be perfect but a reasonable improvement. NWS doesn't want to deal with having put a asterisk on weather records. I can understand that since its such a long running site, but at least highlight the surrounding sites more..but that's more a local news thing though. 

 

Story originally reported on WABC-TV and WABC.com (now "File Not Found")
Original text available below:

Central Park Weather: Vegetative Overgrowth Affecting Weather Readings - WABC-TV

(New York-WABC, August 22, 2003) - Forecasting the weather is not easy.
Government equipment can often be blamed for giving faulty weather
information. As Bill Evans explains, a big culprit may be some of the
equipment buried in Central Park.

Rainfall, snowfall, and the temperature are all vital information
recorded 24 hours a day at the weather station located in the heart of
Central Park.

But meteorologists like Michael Schlacter have serious concerns about the
accuracy of the stations data. It sits amid overgrown vegetation and he
says thats the problem. The leaves can trigger snow gauges and trees can
warp rain and wind measurements. On this hot day, a temperature gauge is
in the shade instead of direct sunlight.

Michael Schlacter, Weather 2000: "Its kind of like driving a car
without a speedometer, odometer, and gas gauge. You are running with
false information."

The weather instruments at Belvedere Castle have long adorned the top.
There used to be a government meteorologist here in the city to keep an
eye on them. But now the nearest meteorologist is 60 miles that way.

But National Weather Service meteorologists say they knew the weather
readings in the park would never be as keenly accurate as the ones at
the airports where guidelines prevent foliage from being within 100 feet
of the station.

Schlacter: "We knew that at times we would have flaky readings, that
leaves would fall in gauges, that we would have problems with
visibility sensors."

[NWS Meteorologist-in-Charge Michael] Wyllie says the weather station is
there because it was historically significant to maintain its presence
in the park.

He says theres been a lot of growth because of the wet spring at so much
in fact that temperatures have routinely been recorded lower in the park
than at the airports.

Wyllie: "We are actually having a micro climate system there because of
the vegetation."

Imperfect perhaps but nonetheless the system provides the official record
of weather for the country's largest city. And Michael Schlacter says
its a city that deserves better.

Schlacter: "I think New Yorkers deserve a lot better, and I think they
deserve the best weather station money can buy."

 

 

I'm pretty sure they are sick of here the same complaints lol

 

 

Same w snowfall:  Airport measurements are generally not by NWS, but instead by someone for the NWS, within a mile or 2, and something like 100ft elevation -this since we went to ASOS in the early 90s. Snow measurements are not an FAA mandate.  Instead, as noted herein earlier,  NWS directs those with interest in climate stats to use nearby representative sites and develop a regional average for snowfall.  BUT, having worked in BOS (now BOX),  I know the Blue Hill Observatory about 10 mi south of BOS and elevation, home to the longest continuous weather observations in North America... had trimmed foliage nearby its sensors to keep the record similar.  Federal monies may not be available for something like this in CP, if ever approved by NYC etc, but for the largest city in the USA,  might still be worthwhile.

[SACRUS]

75/62  ESE wind.  Very California like the next 24 - 36 hours before the heat arrives.  Low 80s today and very pleasant.  Dryer the last few days should help with temps over performing on sunny days.  Starting Friday and id expect temps to come up friday as flow goes more SW by the afternoon and inland areas reach 90, coastal/metro areas may be close 88/89's. 

7/18 - 7/25: The hazy hot and humid weather arrives.  ECM peaking 850MB temps >16c through the period, peaking Sun PM (7/19) - Wed (7/22), coupled with high dewpoints equal excessive heat warnings and temps mid -upper 90s.  Only limiting factor for 100 in EWR, LGA, JFK is clouds in the hotter spots  Sun/Mon.  Storms possible after daytime heating Tue /Wed.   Tuesday could feature more southerly flow for a time but still looks hot enough to get to 90 and continue the heatwave.

Western Atlantic Ridge building west by 7/25 in the long rage offering more above normal/ steamy temps. Way out there we'll see if the ridge shifts west and we increase storms and cool down a bit towards the end of the month.   Overall looking warm into August.

[Cfa]

If there won’t be any efforts to remedy the disaster that is KNYC, I’m all for LGA taking over as the “official” NYC station as it best represents the climate of NYC.

Either way, I hate seeing KNYC’s legacy being ruined by poorly maintained siting conditions, you’d think since it’s so “historically significant” these problems wouldn’t exist.

[dWave]

1 hour ago, Cfa said:

If there won’t be any efforts to remedy the disaster that is KNYC, I’m all for LGA taking over as the “official” NYC station as it best represents the climate of NYC.

Either way, I hate seeing KNYC’s legacy being ruined by poorly maintained siting conditions, you’d think since it’s so “historically significant” these problems wouldn’t exist.

I guess technically, the official reporting station is the one closet to you. So if your in Manhattan it'd be Central Park, but for the Bronx, Northern Qns, it'd be LGA , and in Southern Qns, Eastern Brooklyn, it's JFK. When I put my Zip into any weather app or NWS website, I get LGA info, not Central Park. Of course using Midtown or Lower Manhattan as the city center Central Park wins. (Unless you promoted Wall St heliport to official status..but it stick out in the east river)

[CIK62]

The same relative weekend period last year witnessed 99, 99 at JFK, but 95,95 at Central Park----I believe.      Only LGA had 100.        Personally, I associated best with JFK with 98, 99 here in CI.

A 98, 98 is somewhat possible this weekend.

Take your pick:    For the 5 days starting Saturday:      GFS ENS has an average High T of 92, and the OP is 98.

NOW FOR THE JOKER  of the DECK, I mean model>>>>>>>>>>>>>Back on the July 4th.---06Z output,  the GFS  pegged today to become  the hottest day in NYC history with a prediction of  88/108!      Pick another card man!    lol.

[uncle W]

Central parks elevation was 132ft last I looked...Newark and the airports are more than a hundred feet lower...that's a small percentage for the difference...the parks thermometer censor should be moved to an open grassy area...its a shame the official readings dont come from an official obs placement...I think the foliage effects low temperatures too making them slightly higher than they should be...

[bluewave]

15 minutes ago, uncle W said:

Central parks elevation was 132ft last I looked...Newark and the airports are more than a hundred feet lower...that's a small percentage for the difference...the parks thermometer censor should be moved to an open grassy area...its a shame the official readings dont come from an official obs placement...I think the foliage effects low temperatures too making them slightly higher than they should be...

The site was fine before the trees and bushes became overgrown around the sensors. Like you said, the equipment should be located in a clearing away from any trees. The overgrowth really affected the number of 90°days following the ASOS installation in 1996. It artificially reduced the number of 90° days relative to the period before the ASOS.

Average annual # 90° days 

1970-1989.......2000-2019

NYC...18.0...........15.8

LGA....13.9...........22.3

EWR...23.3...........27.6

JFK....10.5...........11.1

ISP.......5.8.............8.0

 

 

Most recent photo in 2013

 

[Cfa]

2 hours ago, dWave said:

I guess technically, the official reporting station is the one closet to you. So if your in Manhattan it'd be Central Park, but for the Bronx, Northern Qns, it'd be LGA , and in Southern Qns, Eastern Brooklyn, it's JFK. When I put my Zip into any weather app or NWS website, I get LGA info, not Central Park. Of course using Midtown or Lower Manhattan as the city center Central Park wins. (Unless you promoted Wall St heliport to official status..but it stick out in the east river)

It isn’t as big of an issue at the local level since there’s plenty of other stations nearby to choose from, but on a larger regional/national/global level Central Park represents NYC.

None of NYC’s stations do a perfect job of capturing the city’s general climate/weather, they ultimately reflect only their particular microclimate. LGA, in my opinion, easily comes the closest, but since it sits directly on the water its conditions can shift dramatically with changing wind directions, unlike the majority of the city, same for JFK and JBL, meanwhile KNYC, which arguably has the best location of the four, has obs that are tainted and unreliable.

When I lived in Jamaica my microclimate was a mix of LGA and JFK, leaning more towards LGA in the summer and JFK in the winter. In Far Rockaway my microclimate matched JFK in all seasons, the main difference was on a few nights in the winter where it’d be 10+ degrees warmer.  Currently WNW of ISP where my highs in the summer are about 2°F warmer on average.

[Stormlover74]

This September like weather was nice while it lasted 

[forkyfork]

40 minutes ago, Cfa said:

It isn’t as big of an issue at the local level since there’s plenty of other stations nearby to choose from, but on a larger regional/national/global level Central Park represents NYC.

None of NYC’s stations do a perfect job of capturing the city’s general climate/weather, they ultimately reflect only their particular microclimate. LGA, in my opinion, easily comes the closest, but since it sits directly on the water its conditions can shift dramatically with changing wind directions, unlike the majority of the city, same for JFK and JBL, meanwhile KNYC, which arguably has the best location of the four, has obs that are tainted and unreliable.

When I lived in Jamaica my microclimate was a mix of LGA and JFK, leaning more towards LGA in the summer and JFK in the winter. In Far Rockaway my microclimate matched JFK in all seasons, the main difference was on a few nights in the winter where it’d be 10+ degrees warmer.  Currently WNW of ISP where my highs in the summer are about 2°F warmer on average.

boston, nyc, philly, and dc all have annoying asos siting issues. kbos is a few miles east of the city in an exposed coastal location, nyc we know about, phl is on a swamp south of the city and the same is true for dca