Severe storms will transition to the East Coast from the Midwest on Friday.
Meanwhile, another system moving off the Rockies brings thunderstorms to the Northern High Plains.
Starting in the East, a low pressure system and associated cold front that brought many tornadoes, large hail and damaging winds to the Central Plains and Midwest will move over the East Coast. As this system pulls in additional moisture and energy from the Atlantic Ocean, it will allow for storms to develop across the Mid-Atlantic and Gulf states. A stationary front also extends northeastward from this low pressure system, kicking up severe storms over the Northeast. Thus, most of the East Coast has been placed under a slight to moderate risk for severe storm development. Expect large hail, damaging winds, heavy downpours and possibly some tornadoes.
Behind this system in the Plains, a low pressure system that brought rain and thunderstorms to the Pacific Northwest and northern California will continue making its way over the Northern Rockies and into the Northern Plains. This system will push a front into the Dakotas, which will have sufficient energy to produce scattered showers and thunderstorms. There is a slight chance that these storms will turn severe. By evening, the cold front will move into the Upper Plains and extend into the Central Plains. The tail end of this system may produce heavier showers and stronger storms as it obtains additional moisture and energy from the Gulf of Mexico.
Meanwhile, high pressure over the Southwest will create another warm and dry day. Fires will remain of concern across the Southwest as humidity drops and surface winds remain strong with gusts up to 35 mph.
Temperatures in the Lower 48 states Thursday ranged from a morning low of 24 degrees at Mullan Pass, Idaho, to a high of 101 degrees at Laredo, Texas.