The nation’s weather

Weather Underground midday recap for Sunday, June 16, 2013.

Showers and thunderstorms moved into the East on Sunday as a low pressure system lifted over the Great Lakes. During this transition an associated warm front reached across the Lower Great Lakes and the eastern Ohio Valley by the afternoon, while an associated cold front reached southward through the Ohio River Valley and Mid-Mississippi River Valley into the Southern Plains. Flow ahead of this system pulled ample moisture in from the Gulf of Mexico, supporting showers and thunderstorms ahead of the warm front in the Northeast and Lower Great Lakes and ahead of the cold front across the Eastern Valleys, and into Oklahoma and Texas. The Storm Prediction center issued a slight risk of severe storm development in parts of the Southern Plains with hail, damaging wind gusts, and possible tornadoes.

Behind this system in the West, another frontal disturbance strengthened as it moved off the Central Rockies and into the Central Plains. Sufficient upper level support and moisture with this disturbance led to showers and thunderstorms in Nebraska and Kansas, some turning severe with strong winds and large hail. This system also maintained the threat of dry lightning over the Central and Southern Rockies, keeping fire danger high for Colorado and the Four Corners.

Further West, a low pressure system off the coast of the Pacific Northwest edged toward the Pacific Northwest. This push some clouds with cooler air onshore, bringing chances of showers to Washington and northern Oregon Sunday afternoon and evening.

Temperatures in the Lower 48 states Sunday have ranged from a morning low of 26 degrees at West Yellowstone, Mont. to a midday high of 102 degrees at Needles, Calif.

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