Weather Underground midday recap for Wednesday, September 25, 2013.
A cold front moved through the Great Basin and northern Rockies on Wednesday, while a ridge of high pressure brought autumn like conditions to the upper Midwest and Northeast.
A weak cold front passed through southern California early Wednesday, which carried almost no precipitation but did manage to drop temperatures in the region. Los Angeles was mostly cloudy today with a daytime high of 75 degrees. Temperatures in the southern California deserts also stayed well below 100 degrees due to the recent cold front passage. Meanwhile to the north, several low pressure systems embedded in a stationary front brought rain to parts of the Pacific Northwest and Great Basin, while heavy snow impacted the northern Rockies. Snow fell in Idaho, Montana, and Wyoming, while showers moved over eastern Washington and northeast Oregon. Eastern Montana and the Dakotas experienced strong thunderstorms as low pressure interacted with a warm, humid air mass over the northern Plains. The central Plains experienced clearer conditions due to a high pressure system over northern Texas.
The Southeast continued to experience showers and thunderstorms on Wednesday due to a slow moving frontal boundary over the region. The southwest coast of Florida was impacted by the strongest thunderstorms, while moderately strong thunderstorms moved through Virginia, North Carolina and South Carolina. The upper Midwest and the Northeast sat under a dominant high pressure system that brought cool, dry conditions to the area. Temperatures were in the 40s and 50s during the early morning, and stayed between the 60s and 70s during the day.
Temperatures in the Lower 48 states Wednesday have ranged from a morning low of 28 degrees at Leadville, Colo. to a midday high of 98 degrees at Cotulla, Texas