12AM Day 1 Convective Outlook for Sunday, August 31. NO SEVERE THUNDERSTORM AREAS FORECAST
SUMMARY
A few strong thunderstorms will be possible today across parts of the southern and central Plains, and the the Pacific Northwest. The severe potential appears to be low.
DISCUSSION
Mid-level northwesterly flow will be in place today in the central U.S., as a moist airmass remains over much of the Great Plains. As surface temperature warm, isolated to scattered thunderstorms will develop over parts of the southern and central Plains this afternoon. Although a few strong storms could occur, the combination of instability and deep-layer shear will likely be too weak for an appreciable severe weather threat. In the Pacific Northwest, a mid-level low pressure system will affect western Washington, where isolated thunderstorms could develop during the day. In the Pacific Northwest, instability and deep-layer shear is also expected to be insufficient for a severe threat. Elsewhere across the continental United States, no severe threat is forecast today or tonight.