Apex Wx

Flash Flooding Threat Increases Across Ohio Valley
A Moderate Risk of excessive rainfall is in effect across parts of the Ohio Valley, including eastern Illinois, Indiana, and much of Ohio. Thunderstorms moving through saturated areas this morning could cause scattered to numerous flash floods. Another round of storms is expected this evening and overnight across Ohio, spreading into West Virginia and southwestern Pennsylvania by early Sunday. Very moist air and repeated thunderstorms could produce intense rainfall and some considerable flash flooding. A Slight Risk remains across eastern Colorado into central and western Kansas, where storms may cause isolated flash flooding, especially in areas recently affected by heavy rain. A Marginal Risk continues across the Southeast, where localized heavy rainfall and isolated flooding are possible.

Extreme Heat and Elevated Fire Risk Across the Plains
A strong upper-level ridge will continue building over the central United States, bringing excessive heat and elevated fire-weather concerns across the Plains. Temperatures are expected to reach the 100s, while low humidity and breezy winds increase the potential for fires to spread quickly. The greatest fire-weather concern is from the Texas Panhandle through northwestern Oklahoma into southern Kansas, where very dry fuels and recent fire activity add to the risk. In the Northwest, scattered showers and thunderstorms are expected across central Oregon and the Washington Cascades, spreading northeastward. Some storms may be dry or produce limited rainfall, increasing lightning ignition potential in areas with remaining dry fuels. Other areas have received enough rain to reduce fuel dryness, although lightning remains a concern.