bluewave

I see what you mean. I actually drove to the mesonet site in Wantagh when I was back on the South Shore. It’s located in a park just east of the Wantagh Parkway. I will bet you can find the Corona one if you look for that street view showing up on the camera.

Yeah, you can see the exact spot when you open the map in the layers tab.

It has to be since they use those sensors as one tool to gauge the power demands on the Con Edison power grid. This is the highest precision temperature coverage NYC has ever had. It’s an extension of the NY State Mesonet.

You are correct. This is the first time that JFK reached 90° at 8am in June. So they could reach 100° before noon if the sea breeze can hold off. https://mesonet.agron.iastate.edu/plotting/auto/?_wait=no&q=153&network=NY_ASOS&zstation=JFK&month=jun&sday=0624&eday=1231&var=max_tmpf&_r=t&dpi=100&_fmt=png

The HRRR is the most aggressive in suppressing the sea breeze allowing JFK to reach 100°. The other guidance is just a few miles north stalling along the Belt Parkway to Southern State. Somebody just north of sea breeze with downslope compressional warming will probably go 102°-104°. Maybe a peak somewhere of 105° from Newark to Central Queens and perhaps NW Nassau.

It will be a race at JFK today to see if they can reach 100° before the sea breeze. The record ridge is so strong that the Bermuda high pressure is building much further north into Canada. So it leaves a little weakness in the ridge near our area that allows a sea breeze south of the Belt Parkway and the Southern State on Western LI.

Warm spots like Glendale/ Maspeth Queens already 88° after a low of 83°.

The extension of the record Aleutian Ridge closer to Japan has actually slowed the start of the rainy season there with the record heat.

Pretty impressive for so far north this early in the season to tie an all-time high. ...AN ALL-TIME RECORD HIGH TEMPERATURE TIED AND A DAILY HIGH TEMPERATURE RECORD SET AT PLATTSBURGH NY... AN ALL TIME RECORD HIGH TEMPERATURE OF 101 DEGREES WAS TIED AT PLATTSBURGH NY YESTERDAY. THIS TIES THE OLD RECORD OF 101 DEGREES SET ON AUGUST 1ST AND 2ND IN 1975 AND AUGUST 5TH IN 1955.

It seems to have lingered from the winter and spring with the record westerly winds that caused all the upwelling. But the current cool spot is much smaller than it was. Though the local SSTs are still a bit below average for this time of year.

Shorter term guidance showing more of a sea breeze tomorrow south of the Belt and Southern State Parkways .So it’s possible that JFK only makes it to 98-99° with 102° to 104° just north near Corona, Queens. Someone in the area could get very close to 105° where the best compressional warming occurs.

They beat the record that was just set last year. RECORD EVENT REPORT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 0239 PM EDT MON JUN 23 2025 ...RECORD HIGH TEMPERATURE SET AT ALLENTOWN PA... AS OF 230 PM, THE TEMPERATURE AT THE LEHIGH VALLEY INTERNATIONAL AIRPORT HAS REACHED 97 DEGREES SO FAR TODAY. THIS BREAKS THE OLD RECORD OF 96 DEGREES SET IN 2024. THIS REPORT WILL BE UPDATED AGAIN LATER THIS AFTERNOON. TEMPERATURE RECORDS FOR THE PHILADELPHIA AREA DATE BACK TO 1922. RECORD EVENT REPORT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 0235 PM EDT MON JUN 23 2025 ...RECORD HIGH TEMPERATURE SET AT MOUNT POCONO PA... AS OF 230 PM, THE TEMPERATURE AT THE POCONO MOUNTAINS REGIONAL AIRPORT NEAR MOUNT POCONO PA HAS REACHED 91 DEGREES. THIS BREAKS THE RECORD HIGH TEMPERATURE OF 90 DEGREES SET IN 1908. THIS IS ALSO THE FIRST 90 DEGREE OR HIGHER TEMPERATURE IN THE MOUNT POCONO AREA IN 13 YEARS, WHEN THE HIGH WAS 90 DEGREES ON JULY 19, 2013. THIS REPORT WILL BE UPDATED AGAIN LATER THIS AFTERNOON. TEMPERATURE RECORDS AT MOUNT POCONO PA DATE BACK TO 1901.

Yeah, looks lIke around 15 individual sites made it to 100°-101° on the NJ WX Network.

Yeah, feels like in the warm season is the heat index. Feels like during the winter is the wind chill. The actual 80° dewpoint up near the VT border is probably a first for June.

MPO reached 90° which is just off the all-time June high of 92°.

Even though the mesonet was recently installed back in the 2010s, my guess is that an 80° dewpoint and 113° heat index is probably a new June record for this far north in NY.

Harrison is the local warm spot. Harrison NJ 2025-06-23 14:45 APRSWXNET-CWOP 101 77 118

Harrison pretty extreme heat and humidity combo also. Harrison NJ 2025-06-23 12:16 APRSWXNET-CWOP 99 78 117

First time SMQ ever recorded a 110°+ heat index in June and has even risen to 115° in the last few minutes. https://mesonet.agron.iastate.edu/plotting/auto/?_wait=no&q=155&network=NJ_ASOS&zstation=SMQ&var=max_feel&w=all&threshold=100&hour=12&sdate=0101&edate=1231&month=jun&_r=t&dpi=100&_fmt=png https://www.weather.gov/wrh/timeseries?site=KSMQ&hours=72 Jun 23, 12:05 pm 97 79 57 115

Yeah, even JFK probably has a shot at 100°+ tomorrow.

The models are forecasting the dewpoints to drop tomorrow into the 60s or maybe upper 50s in spots with the drier downslope flow.

First time JFK ever had a 78° dewpoint in June. https://mesonet.agron.iastate.edu/plotting/auto/?_wait=no&q=155&network=NY_ASOS&zstation=JFK&var=max_dwpf&w=all&threshold=100&hour=12&sdate=0101&edate=1231&month=jun&_r=t&dpi=100&_fmt=png

Only at the international airport which is locally cooler due to breezes off the widest part of the Delaware River. Monthly Data for July 2024 for Mount Holly NJ NWS CWA Click column heading to sort ascending, click again to sort descending. PA PHILADELPHIA FRANKLIN INSTITUTE COOP 101 PA NORTHEAST PHILADELPHIA AIRPORT WBAN 100 NJ HIGHTSTOWN 2 W COOP 100 DE DOVER COOP 99 PA NORRISTOWN COOP 99 PA PHOENIXVILLE 1 E COOP 99 NJ SOUTH JERSEY REGIONAL AIRPORT WBAN 99 NJ PENNSAUKEN 1N COOP 99 PA DOYLESTOWN AIRPORT WBAN 99 MD STEVENSVILLE 2SW COOP 99 NJ SALEM COOP 98 PA HERITAGE FIELD AIRPORT WBAN 98 PA PHILADELPHIA INTL AP WBAN 98 Data for January 1, 2021 through December 31, 2021 Click column heading to sort ascending, click again to sort descending. PA PHILADELPHIA FRANKLIN INSTITUTE COOP 100 Data for January 1, 2018 through December 31, 2018 Click column heading to sort ascending, click again to sort descending. PA PHILADELPHIA FRANKLIN INSTITUTE COOP 101 NJ ATSION COOP 101 PA PHOENIXVILLE 1 E COOP 100 PA NORTHEAST PHILADELPHIA AIRPORT WBAN 100 NJ HIGHTSTOWN 2 W COOP 100 NJ FREEHOLD-MARLBORO COOP 100

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

The interesting thing is that the 500mb record heights emerged prior to any SST signal. So once the SSTs below reach a certain level a feedback process probably kicks in perpetuating the record ridge persistence even further. But it would be interesting to know which specific area of the planet warmed past a certain threshold leading to the emergence of the ridge before the SST lagged response. My guess the initial 500mb Rossby Wave train impulse began somewhere closer to the tropics. Perhaps the Indio Pacific warm pool. But there could also be an interplay between the Atlantic and Pacific at work.