The nation’s weather

Weather Underground Forecast for Tuesday, August 02, 2016

A wave of low pressure will transition across the northern tier of the country on Tuesday, while monsoonal thunderstorms bring impacts to the Desert Southwest.

A low pressure area will push eastward across the northern Plains and the upper Mississippi Valley. This system will interact with warm and humid air, which will lead to the development of showers and thunderstorms across the northern Plains, the central Plains, the upper Mississippi Valley and the Midwest. Further to the east, a frontal system will extend over the Mid-Atlantic and the Tennessee Valley. Showers and thunderstorms will be possible from the Northeast to the Deep South. The most organized storms will develop along the aforementioned frontal boundary across the Mid-Atlantic and the central Appalachians.

Out west, monsoonal moisture will continue to surge across the Southwest. Daytime heating will trigger afternoon and evening thunderstorms over the lower Intermountain West, the Desert Southwest and parts of the Great Basin. Heavy rain will bring threats of flash flooding to Arizona and western New Mexico.

Additionally, a Pacific low pressure system will push eastward over Washington and northern Idaho. This system will usher cool air and light to moderate showers over Washington, northwest Oregon and parts of the northern Rockies. Most of California, Nevada and Oregon will experience dry weather on Tuesday.


Temperatures in the Lower 48 states Monday have ranged from a morning low of 33 degrees at Stanley, Idaho to a high of 101 degrees at Perryton, Texas