June 2025 discussion-obs: Summerlike

[LibertyBell]

Just now, Sundog said:

It's hot for 9AM, but it's not hot enough to cause heat related power outages though. 

 

Con Ed may not be ready for this....

 

[LibertyBell]

1 minute ago, psv88 said:

No. It just depends on the wind direction. Today the wind has a northerly component so the south shore will heat up faster. But by mid afternoon that will change. 

Yes, it has to hit 100 by 2 pm.... thats why the rapid temperature rise in the morning is necessary to get to 100 before the sea breeze hits here. It's like following a rain/mix/snow line lol

 

[SACRUS]

 

91 / 74 here. In line with past upper 90s/low 100s

[LibertyBell]

2 hours ago, bluewave said:

Newark is currently 85° at only 7am. The Euro has the correct temperature from its 0z forecast. It makes a run on 103° later. That would tie the all-time June record set back in 2021. The forecast for tomorrow is a few degrees warmer at 105°.

Was it right about JFK hitting 90 before 9 am?

[LibertyBell]

2 hours ago, donsutherland1 said:

Today is on track to become New York City's 10th occurrence with a low temperature of 80° or above one day after measurable rainfall. It would be the first such occurrence in June. The list is below:

The highest temperature two days after 1" or more rain was 99°; the highest temperature one day after 1" or more rain was 97°. 

 

Wow, Don, what's the most rain we have had on the same day it's hit 100? 

[LibertyBell]

2 hours ago, TWCCraig said:

HRRR has mid 90s for the island before the sea breeze kicks in in the early afternoon.

The NAM doesn't even have Islip hitting 90 today, that will horribly bust lol

Let's see what time the sea breeze comes in, I'm hoping for after 2 pm back here in the western part of the island.  We hit 90 before 9 am here lol.

 

[psv88]

North winds keeping LGA cooler than JFK. North winds at all Long Island sites now. 

[LibertyBell]

11 hours ago, donsutherland1 said:

I don't believe today's light rainfall (0.10" at NYC, 0.08" at LGA and JFK, and 0.06" at Newark) will have much impact on Tuesday's high temperatures. Looking back at Central Park's long record, there were 6 100° days two days after measurable precipitation. In fact, on July 20, 1977, 0.06" rain fell. July 21, 1977 saw the mercury hit 104°. 

The most precipitation that fell two days before a 100° high was 0.36"; the most precipitation that fell one day before a 100° high was 0.16".

The highest temperature two days after 1" or more rain was 99°; the highest temperature one day after 1" or more rain was 97°. 

The highest temperature two days after 2" or more rain was 95°; the highest temperature one day after 2" or more rain was 93°. Both those cases followed 3" or above rainfall.

The highest temperature two days after 4" or more rain was 89°; the highest temperature one day after 4" or more rain was 87°. 

In short, heavier rainfall would have an impact. The light rainfall that occurred today shouldn't have much impact. The development of a sea breeze, cloud cover, and/or humidity will have a larger impact.

In fact, on July 20, 1977, 0.06" rain fell. July 21, 1977 saw the mercury hit 104°. 

I always wondered how NYC hit 104 that day, because the park had actually cooled down after a 2 day streak of 100+ and then got even hotter the day after it rained!  If that rain hadn't occurred, the park would have had 4 straight days of 100+!!!!

That day it didn't hit 100 and it rained, was that the day of the big blackout Don or did that happen before?

[bluewave]

6 minutes ago, LibertyBell said:

Was it right about JFK hitting 90 before 9 am?

It’s forecast was much cooler in the low to mid 80s at 9am near JFK.

[LibertyBell]

12 hours ago, SACRUS said:

Similar placed ridge at 500MB to Jul 17-18 2013 which produced 100 degree heat.  

 

This was my last previous 100 degree day

[SACRUS]

 

Make me affirm that had we not been cloudy highs would have overperformed yesterday and will have the same potential today as we are seeing - minus seabreeze affected sites.

[cardinalland]

data from new haven airport KHVN. sea breeze has arrived there already.

[Sundog]

2 minutes ago, psv88 said:

North winds keeping LGA cooler than JFK. North winds at all Long Island sites now. 

Southern Queens hotter than notherrn Queens right now, but still hot everywhere, the differences (unless your station is literally 50 feet from the water like LGA is) is 90 or 91 compared to 93 or 94 degrees.

[LibertyBell]

12 hours ago, Sundog said:

Where's @LibertyBellwhen you need him lol

watching the NBA finals at that time and then went to sleep so I could get up early to watch the temperatures rise!

[SACRUS]

 

Again the issue more with central park is its used for the center / mecca of NYC weather when reporting.  So for example today's the first 90 degree day in NYC when in fact there have been between 2 - 4 already.  First 100 degree day in 13 years when there have been more recently in NYC/NJ metro proper.  Perception.  

[LibertyBell]

11 hours ago, psv88 said:

Not sure why anyone thinks rain on Sunday impacts our highs in Tuesday. A theory floated by some experienced posters as well. Bizarre 

it especially doesn't make sense since in this kind of heat the moisture from the rain evaporated the same day that it fell. 

 

[SACRUS]

 

Dew point holding steady at 74-75 here.  Fungus/mildew/mold spores must be high still.  Hope the sun can temper those.

[SACRUS]

 

Smoothed out but rain chances Wed evening, Thu evening and each of Fri - Sun could get some localized spots >2 inches plus where storms fire.  The weekend looks mainly ok hot/humid but scattered storms so far.

 

[donsutherland1]

Today is the first June day on record where both Newark and New York City (Central Park) had low temperatures of 80° or above. The last such occurrence was July 28, 2020. Overall, it is the 32nd such case during the common period for their records. Below is a chart showing the mean high temperature, highest maximum temperature, and lowest maximum temperature for such cases. 

[LibertyBell]

13 hours ago, donsutherland1 said:

JFK Airport (91°), LaGuardia Airport (90°), and Newark (92°) all reached 90° or above while Central Park (88°) did not. That was the second time this month that happened. The last month with two such days was August 2021. The record is 4 such days in June 2010. 

Even more impressive, Bridgeport, JFK Airport, LaGuardia Airport, Islip, and Newark all reached 90° or higher, while Central Park did not for the first time since June 17, 2022 and only the 12th time during the period of common recordkeeping. The 5° difference between Brigeport (93°) and Central Park (88°) was just 1° short of the record for all days where Bridgeport reached 90° or above and Central Park did not. That record was set on June 24, 2017: Bridgeport: 90°; Central Park: 84°.

During the period of common recordkeeping, there have been 149 days when JFK reached 90° or higher and Central Park did not. In contrast, there have been 722 days when Central Park reached 90°F or higher and JFK did not. There have been 46 days when Bridgeport reached 90° or higher and Central Park did not. In contrast, there have been 663 days when Central Park reached 90°F or higher and Bridgeport did not.There have been 38 days when Islip reached 90° or higher and Central Park did not. In contrast, there have been 702 days when Central Park reached 90°F or higher and Islip did not.

Intriguing stats Don!  How many days have there been when JFK reached 100 and NYC did not?

One I remember right away is July 4, 2010.

[LibertyBell]

3 minutes ago, SACRUS said:

 

Dew point holding steady at 74-75 here.  Fungus/mildew/mold spores must be high still.  Hope the sun can temper those.

Yes as long as the sun is out, I don't have those allergies.

[donsutherland1]

18 minutes ago, LibertyBell said:

The highest temperature two days after 1" or more rain was 99°; the highest temperature one day after 1" or more rain was 97°. 

 

Wow, Don, what's the most rain we have had on the same day it's hit 100? 

1.76" on July 18, 2012. The rain was associated with a cold front that crossed the region after the high had been reached.

[Sundog]

The 12z 3k NAM coming out right now is doing well with temps at 10AM, showing low to mid 90s in the NYC area. It kind of caps temps there though until they start to drop from a seabreeze in the afternoon. 

[donsutherland1]

15 minutes ago, LibertyBell said:

In fact, on July 20, 1977, 0.06" rain fell. July 21, 1977 saw the mercury hit 104°. 

I always wondered how NYC hit 104 that day, because the park had actually cooled down after a 2 day streak of 100+ and then got even hotter the day after it rained!  If that rain hadn't occurred, the park would have had 4 straight days of 100+!!!!

That day it didn't hit 100 and it rained, was that the day of the big blackout Don or did that happen before?

The blackout began on July 13, 1977. The high that day was 93°.

[Brian5671]

Use Walt's thread for the heatwave discussion....

[donsutherland1]

9 minutes ago, LibertyBell said:

Intriguing stats Don!  How many days have there been when JFK reached 100 and NYC did not?

One I remember right away is July 4, 2010.

Seven days:

[LibertyBell]

9 minutes ago, donsutherland1 said:

Seven days:

That 6 degree difference from 1972 really stands out, I wonder what was going on that day?

and wow, JFK had 2 100 degree days in 1983 and NYC had none?

[donsutherland1]

17 minutes ago, LibertyBell said:

That 6 degree difference from 1972 really stands out, I wonder what was going on that day?

and wow, JFK had 2 100 degree days in 1983 and NYC had none?

JFK was the hot spot in the area. 

Bridgeport: 94° 

Islip: 94° 

Central Park: 94° 

JFK: 100° 

LaGuardia: 91° 

Newark: 96° 

White Plains: 86° 

[LibertyBell]

3 minutes ago, donsutherland1 said:

JFK was the hot spot in the area. 

Bridgeport: 94° 

Islip: 94° 

Central Park: 94° 

JFK: 100° 

LaGuardia: 91° 

Newark: 96° 

White Plains: 86° 

my dream day, were the winds westerly when it hit 100 Don?

[Santa Claus]

very important to stay hydrated today.  remember to drink plenty of espressos, Boone’s Farm, and Mad Dog 20/20