Active weather will persist in North, Central AMERICA will remain hot and muggy with storms developed across the Southwest on Tuesday.
Starting from the North, a low pressure system moved out of the Northern mountains, kicked up scattered showers and thunderstorms over the Northern Plains and upper Midwest will continue pushing a warm Front to the East. On Tuesday, the warm Front will move over the Great Lakes region, triggering thunderstorms with periods of severe storms. Large hail, damaging winds and heavy rainfall is likely, but does not expect tornadoes. Rainfall totals will range from 1 to 2 inches in the most area, up to 3 inches possible in areas of severe storms. Flooding will remain a concern for the Upper Mississippi River Valley and the Ohio River Valley. At the same time, the back side of this low pressure system will Drag a cold front through the Northern Plains and upper Midwest, bringing some relief with the heat. These areas will see highs in the upper 40s, Tuesday, that the day before saw highs in the upper 90s.
To the South, a strong ridge of high pressure continues building northeastward from the Southern Plains. As this ridge pushes warm and moist air northward from the Gulf of Mexico, hot and muggy conditions would spread from Central and Southern Plains to the Middle Mississippi Valley. Expect high temperatures ranging from 100 to 110 degrees, with heat index values up to 120 degrees in some areas.
To the West, Monsoon moisture lingering over the Southwest produces more scattered showers and thunderstorms from the four corners for central mountains. Meanwhile, a trough from the West Coast will allow temperatures to remain slightly below seasonal throughout California and the Pacific Northwest.
Temperatures in the Lower 48 states Tuesday ranged from a morning low of 42 degrees at Walla Walla, Wash., to a midday high of 109 degrees at grain Valley, Texas.
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