Weather Underground midday recap for Friday, July 12, 2013.
Showers and thunderstorms continued in parts of the Eastern Seaboard on Friday, while active weather developed across the North-Central U.S.
In the East, a frontal boundary lingered over the Southeast and Mid-Atlantic states with waves of low pressure through the day. Ample moisture combined with energy from this disturbance and daytime heating supported another round of widely scattered to scattered showers and thunderstorms from the Gulf of Mexico through the Carolinas and the Virginias into the southern New England coastal areas. While severe storms were not anticipated in the region on Friday, a few areas of isolated hail were possible mainly over the Central and Southern Appalachians. Meanwhile, near this area, an area of unsettled weather associated with the remnants of Chantal moved northward over the Bahamas. The disturbance remained disorganized and became less likely to redevelop.
To the west of this activity, a low pressure system over the Northern Rockies strengthened as it ejected eastward into the Northern Plains. Showers and thunderstorms began to pick up in the Northern Plains and the Upper Mississippi Valley through the afternoon. The Storm Prediction Center issued a slight risk of severe thunderstorms for portions of South Dakota, Minnesota, and southeastern North Dakota due to the possibility of damaging wind gusts and locally large hail.
Further west, monsoonal moisture combined with daytime heating created chances of rain showers and afternoon thunderstorms in the Four Corners and the Central and Southern Rockies.
Temperatures in the Lower 48 states Friday have ranged from a morning low of 35 degrees at Truckee-Tahoe, Calif. to a midday high of 102 degrees at Hays, Kan.