With a high pressure area off the Middle Atlantic coast and a cold front crawling through the Midwest, the Northeast will be in a southwesterly flow of very warm and humid air much of the week. The cold front will help sponsor violent thunderstorms later today from northern Missouri and much of Iowa into southern Wisconsin and much of Illinois, then later into areas of Michigan and Indiana (tonight).
For the East Coast, an important issue is whether a tropical storm (which would be named Arthur) develops near the Georgia or South Carolina coast and then comes up the coast. So far, the storm has not developed, but we'll tell you more about it on accuweather.com as we go through the week. Last night's ECMWF (European Model) showed this for Friday afternoon:
While this looks quite threatening for the Carolinas, we note the storm has not formed yet and until it does these are just lines on your screen.
Here we see the same model taking the storm well out to sea by Saturday. Again, however, since the storm has yet to form anything showing it in one place or another five days in advance is subject to healthy skepticism.
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After the next few days, real cold weather may take a long break