2024-2025 La Nina

[LibertyBell]

3 minutes ago, TheClimateChanger said:

I'm not sure I buy that. The 5-year moving average for Newark is up to 37 days of 90+ which is the most on record, matching the 5 yma from 1995 [which I have previously explained why the numbers from that era were inflated at first order sites, but everyone here just ignores that fact?]. A regression since 1960 suggests an increase in 90+ days of nearly two weeks over that time period - from 20 to 33 days.

Central Park is the only site that seems to be bucking that trend, but I think @bluewavehas extensively documented the impact of overgrown vegetation surrounding the ASOS site and significant shading of the ASOS.

JFK too, the heat is moving inland, Chris said it's because the Bermuda High is moving north, which is why the heat is focused more inland and we're just getting the humidity (yuck).

Our 90 degree days have not seen an increase in a few decades.

Trust me I wish we were getting hotter drier summers but here on Long Island, they are much wetter and very humid but not as hot. More like Florida's east coast.

[TheClimateChanger]

Here is LaGuardia. Regression shows an increase from 10 days of 90+ to 25 days of 90+ since 1960. The peak 5 year moving average was 31 in 2022 - just two summers ago. It's fallen back a small bit over the last 2 summers, but a particularly hot summer this year will likely send it back to a new record 5 yma.

[LibertyBell]

Just now, TheClimateChanger said:

Here is LaGuardia. Regression shows an increase from 10 days of 90+ to 25 days of 90+ since 1960. The peak 5 year moving average was 31 in 2022 - just two summers ago. It's fallen back a small bit over the last 2 summers, but a particularly hot summer this year will likely send it back to a new record 5 yma.

LGA has more of an inland influence so they are lucky enough to avoid the onshore flow we're getting here on the south shore.  But as you said, it's much better at EWR, where there a southerly/southwesterly flow doesn't allow the ocean to moderate the air.

The changing position of the Bermuda High is responsible.  When we had more 90 degree days here during the 90s, it was south of us, giving us a downsloping westerly flow.  Now the Bermuda High and heat has moved north of us giving us more of a southerly flow, which is more humid but caps our heat in the upper 80s.

 

[michsnowfreak]

15 minutes ago, LibertyBell said:

Ours was July 2010, I loved that month !! 

Mine would be July 2012. Just gross.

[michsnowfreak]

20 minutes ago, LibertyBell said:

I fully subscribe to climate change, but you must admit it affects winters much more than it does summers.  Summers are judged by high temps anyway, like number of 90 and 100 degree days.  The wetter springs and wetter summers are flatlining the number of hot days we have and shortening our heatwaves to 3-5 days or less, when we once used to have much longer heatwaves of 7-10 days or even more multiple times a summer (1999, 2002).

I would dearly like to remove water vapor from the atmosphere and convert it to drinking water, which would ameliorate this issue somewhat.

Higher summer mins seem to be the most notable aspect here. There's obviously nuances to everything, but LONGTERM, winter here really hasn't changed much outside of a Dec temp increase and Jan-Feb snow increase.

[LibertyBell]

5 minutes ago, michsnowfreak said:

Mine would be July 2012. Just gross.

That entire 2010-2013 may not be repeated again for a long time.

What I really liked about it was it was hot and dry.