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June 2025 discussion-obs: Summerlike


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2 hours ago, LibertyBell said:

why are these models showing 70s on the south shore though?

 

Hard to tell over a week out. But the EPS mean has westerly flow. So my guess is that most of the area away from the immediate shore will see their first mid to possibly upper 90s of the season. It’s a strong signal from an ensemble mean to see a 594 DM heat dome in the East over a week out.

 

IMG_3809.gif.e44c17b6bf877bdd82590e8dc22bcdf6.gif

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2 minutes ago, bluewave said:

Hard to tell over a week out. But the EPS mean has westerly flow. So my guess is that most of the area away from the immediate shore will see their first mid to possibly upper 90s of the season. It’s a strong signal from an ensemble mean to see a 594 DM heat dome in the East over a week out.

IMG_3807.gif.101457df7092a1cb983ed3f0c110b4e3.gif

 

Yes that definitely looks like a NW flow event here, we could have the highest temperatures of the tristate area here!!

 

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39 minutes ago, forkyfork said:

the ggem gets close to height records

image.thumb.png.b062912cb2dbf48fa45da52685da4486.png

image.thumb.jpeg.1174945d1c6580b63ec35fd36df2108c.jpeg

This kind of reminds me of the evolution of the hot summer of 1980.  From Tony's daily posts you can see that there were a bunch of cold low records from 1980 even at JFK from early to mid June.  But the summer really began around June 20th as heat from the west expanded eastward.  Although Saint Louis was the epicenter of the heat that summer, NYC had their hottest July-August couplet on record that year with those 62 days averaging over 80 degrees with August 1980 the hottest August on record here!  The heat matched up with astronomical summer really well as it began on June 20th and ended September 20th.

I remember a few of us brought up 1980 as an analog to this summer.

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3 minutes ago, LibertyBell said:

Yes that definitely looks like a NW flow event here, we could have the highest temperatures of the tristate area here!!

 

And maybe big storms. Sometimes we see derechos or big storm complexes on the periphery of these heat dome ridges. 

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5 minutes ago, LibertyBell said:

Yes that definitely looks like a NW flow event here, we could have the highest temperatures of the tristate area here!!

 

If we can keep the ridge from elongating too much into SE Canada in later runs, then a flatter EPS high like below will keep the flow more westerly. 
 

IMG_3810.gif.b81c0816263f72d745c5ef99c12c8983.gif

 

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55 minutes ago, Sundog said:

And we've gotten days where it stayed in the 50s during the day in the second half of August, despite the warmer water. 

July 2, 1993 we had a split of 66/62 (actually similar to today with windy onshore flow and heavy rain.)  A few days later we were off to the races with one of the most extreme heatwaves on record and one of the hottest summers on record, many of whose records still stand today (3 days in a row of 100+ at NYC, 5 days in a row of 100+ at EWR and 9 100+ days for the season at EWR, most 90 degree days at NYC with 39, tied 1991.)

 

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6 minutes ago, LibertyBell said:

We have to look at recent trends more, September become a summer month now.  Even October.

My statement was based off the already fake and overly warm latest climate normals. 

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1 minute ago, Sundog said:

My statement was based off the already fake and overly warm latest climate normals. 

we have to look at 90 degree days to judge heat not average temperatures.  In September 1983 for example, there were 7 90 degree days and a scorching 99 on September 11th.  I wonder how many Junes have had 7 90 degree days and peaked at 99? Maybe a couple at most.

 

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Tomorrow will be another very cool day for the season. The temperature will top out in the middle and upper 60s. It will gradually warm up on Monday and Tuesday. By Wednesday, the mercury could reach 80°.

No exceptional heat appears likely through the first three weeks of June. However, a sustained peirod of above normal temperatures could develop starting late next week.

The ENSO Region 1+2 anomaly was +0.4°C and the Region 3.4 anomaly was 0.0°C for the week centered around June 4. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +0.23°C and the ENSO Region 3.4 anomaly has averaged -0.07°C. Neutral ENSO conditions will likely continue through at least mid summer.

The SOI was +0.42 yesterday. 

The preliminary Arctic Oscillation (AO) was -0.149 today. 

Based on sensitivity analysis applied to the latest guidance, there is an implied 60% probability that New York City will have a warmer than normal June (1991-2020 normal). June will likely finish with a mean temperature near 73.0° (1.0° above normal). 

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7 hours ago, bluewave said:

Hard to tell over a week out. But the EPS mean has westerly flow. So my guess is that most of the area away from the immediate shore will see their first mid to possibly upper 90s of the season. It’s a strong signal from an ensemble mean to see a 594 DM heat dome in the East over a week out.

 

IMG_3809.gif.e44c17b6bf877bdd82590e8dc22bcdf6.gif

We could get our 100s

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