Newark (interiors of NJ/se NYS/CT) Sun-Wed June 22-25 possibly hottest 3-4 day period this year (2025) with 2-4 100F+ days, possibly hottest June daily. NYC probably one 100 deg. HI exceeds 105 interior M-T June 23-24.

[wdrag]

Model guidance (especially European) for days has been forecasting 100 degree heat, with the potential suppressants being early developing daily sea breezes and/or thunderstorms-clouds debris.

While severe storms cause damage, excessive heat can cause fatalities if not properly prepared. Please follow NWS guidance and advise of local officials-cooling centers, hydrating etc as this heat wave develops. 

The Heat Wave 'may' break next Thu-Fri before reasserting for another opportunity at 100F next weekend - June 28-29.

June record stats in the 90+ year Period of Record (POR)... 100+. Newark 2 days,  NYC CP 1.

Yearly warmest 3 day max temp period ever in Newark over the 90+ period of record. We MAY??? crack top 10. See attached graphic. 

Added Preparedness statistics graphic...believe--especially urban centers which may not cool below 82 degrees Monday and Tuesday nights. HEAT on average is the highest fatality hazard.  

WPC statistical probability of MAX HI on the 23rd is added... from the graphic you can see that is a 50-70% chance in the interior.   post completed 1105PM/19

 

 

 

[LibertyBell]

Long live 1966 and 1993 and 2010 and 2011 some of our hottest summers on record, notice that EWR and JFK hottest days and hottest summers match up well, Walt!!

[dWave]

Upton issued Extreme Heat Watch issued for most of the area, eastern Suffolk is left out.

Is that different for an Excessive Heat Watch/Warning? Or did they just change the terminology?

NWS has 100 forecasted for Mon and Tues. At least point and click in the Bx, a lot of Queens

[uofmiami]

23 minutes ago, dWave said:

Upton issued Extreme Heat Watch issued for most of the area, eastern Suffolk is left out.

Is that different for an Excessive Heat Watch/Warning? Or did they just change the terminology?

NWS has 100 forecasted for Mon and Tues. At least point and click in the Bx, a lot of Queens

https://www.weather.gov/news/250310-heat-hazard

NWS is renaming its Heat Watch and Heat Warning products to improve messaging. On March 4, 2025, the NWS will implement the following changes: 

Excessive Heat Watches will be renamed to Extreme Heat Watches.

Excessive Heat Warnings will be renamed to Extreme Heat Warnings.

[nycwinter]

49 minutes ago, dWave said:

Upton issued Extreme Heat Watch issued for most of the area, eastern Suffolk is left out.

Is that different for an Excessive Heat Watch/Warning? Or did they just change the terminology?

NWS has 100 forecasted for Mon and Tues. At least point and click in the Bx, a lot of Queens

a excessive heat warning is when temps and humidity are basically guaranteed to reach a certain criteria while a extreme watch is not as confident the criteria will be met..

[wdrag]

1 hour ago, dWave said:

Upton issued Extreme Heat Watch issued for most of the area, eastern Suffolk is left out.

Is that different for an Excessive Heat Watch/Warning? Or did they just change the terminology?

NWS has 100 forecasted for Mon and Tues. At least point and click in the Bx, a lot of Queens

Busy w granddaughter but I think terminology has changed. UNUSUAL for NWS to issue a watch 3-6 days in advance.  Confidence high on problems.  In the Deep South they might handle it better??  but here its sudden onset and magnitude.  Ensembles continue 100+ for the I95 corridor. 

[wdrag]

31 minutes ago, nycwinter said:

a excessive heat warning is when temps and humidity are basically guaranteed to reach a certain criteria while a extreme watch is not as confident the criteria will be met..

but consider that forecasters do not like egg on their face so to speak... none of us like to be wrong.  In this case confidence is high that problems will develop of the magnitude described. Yes watch is less confident than warning,