Weather Underground midday recap for Saturday, August 08, 2015

A cold front stretched across the northern tier of the country on Saturday, while a stationary front extended from the Southeast to the Plains.

A cold frontal boundary dipped southeastward over the northern Plains and the upper Midwest. This frontal boundary initiated rain and thunderstorms over the upper Intermountain West, the northern Plains and the upper Midwest. Severe thunderstorm warnings were issued in Minnesota on Saturday. Waseca, Minn., reported a midday total of 1.74 inches of rain. Ortonville, Minn., reported a midday total of 0.93 inches of rain.

Meanwhile, monsoonal moisture and daytime heating aided in the development of showers and thunderstorms over the central and southern Rockies. Additionally, a weak cold front approached the Pacific Northwest. This frontal boundary brought light to moderate rain to western Washington. A ridge of high pressure kept the remainder of the West Coast mostly clear of precipitation.

To the east, a high pressure system brought warm, muggy weather to the southern Plains and the lower MIssissippi Valley. Excessive heat warnings were issued in eastern Oklahoma, Arkansas, northern Louisiana, Mississippi and southwest Tennessee. Pine Bluff, Ark., recorded a midday high of 96 degrees with a heat index of 116 degrees. A stationary front stretched from the Southeast to the central Plains. Rain and thunderstorms developed along and near this frontal boundary over the eastern Gulf Coast and Florida. Brooksville, Fla., reported a midday total of 4.29 inches of rain. Rain and thunderstorms also developed over the Mid-Atlantic as a low pressure system shifted across the western Atlantic.

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Temperatures in the Lower 48 states Saturday have ranged from a morning low of 33 degrees at Big Bear City, Calif. to a midday high of 104 degrees at Florence Mem AP, Arkadelph, Ark.