All this heat in the Mid-Atlantic and Mid-west and even the southeast the past few days has many people wondering in a figurative sense, where is the polar air that we dealt with this past winter when you need it. But the comforting this is that the models GFS/EURO are both showing that a cooler dose of air will come by means of a cold front. Especially for the mid-Atlantic and Mid-West late this month. An area of High pressure from Canada will move southeast into the region and usher in cooler more refreshing air. Now the duration and intensity of the cooling event is what the models are divided on.
00Z Euro last night: Showed the same cool shot of air (relatively cool for this time of year) comes down between the 26th-30th. It drops all the way into norther Indiana and Ohio. This is different from what the 00Z GFS model which had the cooler air coming around the same time, but keeps the high pressure system about 100-150 miles north in northern Michigan. (See opening image) This will be the difference in the mid-70’s and the Low 70’s in the mid-atlantic and for the southeast mid 80’s or 90’s. Those details will be lined up as we get closer.
While the East cools off some look for some 100 degree temperatures to build in the west as we start seeing a pattern shift The GFS 00Z run from last night really keeps the cooler air in the area all the way through its run in the Mid-Atlantic, Midwest and northeast from the 26th on. As re-enforcing shots of cooler air, via high pressure come down. Right now only the 00Z GFS is showing this. It will be interesting to see what the 06Z, 12Z and 18Z models have to say about that, and also what the Euro has to say about it when it gets in range. But some relief from the heat and humidity is definitely going to be a welcome sight. 🙂 Enjoy the cool air while it last west, as that will shift east by late month. Could this be a sign of things to come for the remaining part of Summer? I will let you know in my July forecast coming out later this week. Take care folks.