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15 minutes ago, Stormlover74 said:

Nam lol

https://vlab.noaa.gov/web/environmental-modeling-center/fv3-convective-allowing-forecast-system

NAM development was frozen after the March 2017 upgrade, and RAP/HRRR development with the WRF-ARW model will cease after the RAPv5/HRRRv4 upgrade in 2020. However, operational execution of these modeling and associated DA systems will continue until comparable FV3-based systems are able to give similar performance.

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5 minutes ago, Brian5671 said:

this has been poorly modeled-radar/now cast will do best.

The heaviest for places like LI and Southern CT will probably be from tonight into tomorrow. 

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Rain and thunderstorms are likely into tomorrow. A general storm total 0.50"-1.50" rainfall with locally higher amounts is likely by the time the rain ends tomorrow afternoon. Through 8 pm, Georgetown, DE has picked up 3.76" of rain. That broke that city's daily mark of 3.41" from 2013.

Heat will begin to return during on Sunday. Early next week will likely be very hot and humid. The heat will likely crest during Monday through Wednesday. During that time, widespread 95°-100° high temperatures are possible. Cooler air will arrive late in the week.

In parts of California, Nevada, and Arizona, a severe long-duration and dangerous heatwave continues. Las Vegas recorded its record 7th consecutive 115° day. Boise saw the temperature reach 105° for a record-tying fourth consecutive day. The intense heat will finally recede over the next few days.

The latest summer guidance continues to suggest a warmer to much warmer than normal summer lies ahead.  

The ENSO Region 1+2 anomaly was 0.0°C and the Region 3.4 anomaly was 0.3°C for the week centered around July 3. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.62°C and the ENSO Region 3.4 anomaly has averaged +0.20°C. Neutral ENSO conditions will likely evolve into a La Niña event during the late summer or early fall.

The SOI was -22.04 today.

The preliminary Arctic Oscillation (AO) was +0.206 today.

Based on sensitivity analysis applied to the latest guidance, there is an implied near 79% probability that New York City will have a warmer than normal July (1991-2020 normal). July will likely finish with a mean temperature near 79.9° (2.4° above normal). That would rank 2024 as the 10th hottest July on record.

 

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