National Weather Service United States Department of Commerce

Extreme Heat Continues; Severe Thunderstorms into Upper Midwest; Strong Bering Sea Storm

Wildfires and poor air quality continue for the Pacific Northwest, Rockies and extended into the Plains. Severe thunderstorms possible for the northern Plains and upper Midwest on Monday along a frontal boundary. Another boundary will focus showers and thunderstorms for the eastern seaboard with localized heavy rainfall possible. For Alaska, a strong Bering Sea storm will bring winds and rainfall. Read More >

An initial round of thunderstorms is expected Sunday morning/early afternoon. While widespread severe weather is not expected, the strongest storms may produce locally damaging winds and hail up to the size of quarters.
Another round of storms is expected late Sunday afternoon into the evening. The exact placement and timing remains uncertain and will depend on the evolution of morning activity, but any storms that develop will be capable of all severe hazards.
A periodically stormy weather pattern will develop Sunday through the middle of the upcoming week and some storms may be severe at times.