The actual Central Park temperature was probably close to 90 up on the castle where the instruments used to be. You can see how many times NYC,LGA, and EWR had similar highs before the instruments got moved under the trees in 1996.
Maybe the warm spots can sneak in a first 90 today if the scattered convection waits until later in the afternoon. Already 77 at EWR and LGA. But we have seen clouds and convection interfere with our maximum temperature potential recently.
The lingering spring blocking kept the strongest instability and heat just to our south this week. Areas around DC and Baltimore had record heat in the mid 90s. Looks like the Cristobal near record ET through the Great Lakes will help to maintain the blocking pattern into mid-June.
Be interesting to see if the Christobal ET can set the new record lowest pressure in Wisconsin for June. It could cause a wave breaking event that results in a cooler pattern here in mid-June.
Every 80+ degree day since the beginning of May has had either a T or measurable rain. Plenty of clouds and moisture accompanying our warm ups. Local sea breezes and onshore flow has also been a factor in reducing our high temperature potential.
June derecho climatology is to our south like in 2012. But the tracks shift more to the north as the season goes on.
https://journals.ametsoc.org/doi/pdf/10.1175/MWR-D-15-0256.1
Yeah, it will depend on the amount clouds and wind direction at the time. But that could be another window to watch if we can get some sun and SW flow.
If all the clouds and convection prevent a first 90 for the warm spots this week, then it may be a while longer. EPS indicating a potential blocking pattern emerging in about 8-10 days. So places like Newark could see a very late first 90 this year if clouds and convection win out this week.
Some parts of the region could see their first 90 on Wednesday if the convection waits until the afternoon like the Euro. But a faster arrival with more morning clouds would mean slightly cooler maxes than the Euro. The amount of daytime heating will also determine the severity of the storms.
The general signal of convection firing over the Great Lakes and racing ESE is pretty easy for the models to spot. But the timing and intensity usually have to wait until the short term. How much do we destabilize before the storms arrive and will any debris clouds be a factor?