Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 400 PM EDT Tue Aug 04 2015 Valid 00Z Wed Aug 05 2015 - 00Z Fri Aug 07 2015 ...Severe storms and flash flood potential for the central Plains to the middle Mississippi River Valley... ...Triple digit temperatures for the southern Plains... Much of the nation's active weather will be focused near a frontal boundary, forecast to develop near Kansas and Oklahoma early Wednesday morning. Currently, seasonably hot and humid conditions are present to the south of a cold front that extends from New England into the central Plains with lower humidity values north of the boundary. While the eastern portion of the front is expected to progress through the northern mid-Atlantic and New England tonight, the portion extending through the central U.S. will lift north as a warm front. Warm and moist flow from the Gulf of Mexico will lift northward into the central Plains and mid-Mississippi River Valley, helping to reinforce a new, quasi-stationary front near the Kansas-Oklahoma border by Wednesday morning. Flash flooding and strong to severe storms will be possible just north of this front according to the latest excessive rainfall and convective outlooks issued by the WPC and SPC, respectively, through Thursday. Out west, upper level ridging will be present through the middle of the week over the Southwest, which will keep moisture below typical monsoonal averages, suppressing convective activity in the afternoon and evening hours. However, the ridge will act to keep daytime high temperatures a bit above early August normals through Arizona and western New Mexico. Farther to the east however, high temperatures in the low to mid 100s can be expected into much of eastern New Mexico, Texas and Oklahoma through Thursday. Otto Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php