A low pressure system moved across the Intermountain West on Friday, while a Pacific system approached the Northwest.
An area of low pressure shifted northeastward across the Intermountain West and the northern high Plains. A warm frontal boundary associated with this system extended eastward. This frontal boundary generated moderate to heavy rain and embedded thunderstorms over the northern Plains and the upper Midwest. Flood warnings were issued in southwest Wisconsin, southeast Minnesota and eastern Iowa. Clarion, Iowa, reported a midday total of 2.09 inches of rain. Madison, Minn., reported a midday total of 1.41 inches of rain. A cold frontal boundary extended south southwestward. Temperatures dropped 10 to 20 degrees below normal west of the frontal boundary. This cool air supported the development of high elevation snow in the northern Sierra Nevada, the Great Basin, the Wasatch and the Rockies. Truckee, Calif., recorded a morning low of 19 degrees. Evanston, Wyo., recorded a morning low of 33 degrees. Winter weather advisories were issued in northern Wyoming and northern Utah. Flash flood watches were also issued in northwest Wyoming and southeast Idaho.
Further to the west, a Pacific system approached the Northwest. Light to moderate rain developed ahead of this system over Washington and northern Oregon.
Meanwhile, a wave of low pressure continued to produce scattered showers and thunderstorms along the southern Mid-Atlantic. Flash flood watches were issued in southeast North Carolina. Just to the north, a cold frontal boundary generated light to moderate rain in parts of New England.
No comments:
Post a Comment