We have an unusual weather setup over the Lower 48 as an area of low pressure drops from the Ohio Valley to Texas. That heralds cooling, damp relief for the Lone Star State while it forces high pressure to build over top and bring the next heatwave to the Northeast. The heat that was over Texas yesterday gets forced northeast bringing the longest spell and most intense heat of the year so far to the Big Cities. While temperatures today held in the 70s with rain in Dallas today, it was pushing 90 in New York and that will be the coolest of the next 5 days.

Dallas had reached 100 or greater for 5 straight days but that streak came to an end today as a cold front pushed through the area. As of late afternoon, temperatures were stuck at 74 with rain while at the same time yesterday it was a hot 101.

Take a look at the next 72 hours off the QPF. A lot of rain headed for Texas, areas which are now entering typically the driest time of the entire year.

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Here’s the 7 day

Check out the amount of rain expected thanks to the cold pocket of air over the Southern plains. The trough will allow help draw moisture out of the Gulf and into the Four Corners region with thunderstorms and flooding rain possible as far west as Las Vegas and Barstow, Calif over the next 3-5 days.

Below is the ECMWF for the week ahead. If you live in the DC to Boston corridor, prepare to face the hottest week of the year so far with mid 90s settling in tomorrow and potentially upper 90s by midweek. While it’s likely to be a full week of 90s with suppressive humidity making it feel near 100 each day along with mid and upper 70 degree nights, expect a reversal by next weekend into the following week. A major trough drops into the Great Lakes and Northeast.

Mon 15

Wed 17

Fri 19

Sun 21

 

The CFSv2 continues to show substantial cooling in the 6-10 day and beyond across much of the country with no real return to warmth after for the Northeast.

CFSv2 6-10 & 8-14 day

Week 3-4

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