Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 255 AM EDT Wed Jun 28 2017 Valid 12Z Wed Jun 28 2017 - 12Z Fri Jun 30 2017 ...Severe thunderstorms and heavy rain possible from the central plains to the Midwest... ...Gradually rising temperatures expected across the West Coast states... An active weather pattern will be in place from the Plains to the Great Lakes through the next couple days. A frontal system will bring showers and thunderstorms to areas from the central plains to the Midwest and Great Lakes today and tonight. Severe thunderstorms will be possible along with heavy rainfall. Please refer to products issued by the Storm Prediction Center for further details on the severe weather threat. Thursday and Thursday night, a round of showers and storms will move from the Great Lakes into the Northeast as the initial frontal wave moves into southeastern Canada. Meanwhile, another area of low pressure is forecast to develop along the front across the central plains, spreading another round of showers and storms from the central plains to the Midwest. Severe thunderstorms and heavy rainfall will once again be possible. Elsewhere, increasing moisture and instability will result in a gradual increase in showers and storm across the southern tier. Storm should remain confined generally along the Gulf Coast today. Scattered showers and storms are expected farther inland across the Southeast on Thursday, however. Farther west, after a brief cool down, temperatures are expected to begin rising once again through the end of the work week as high pressure aloft builds into the region. High temperatures on Thursday are forecast to be 5 to 10 degrees above average across the West Coast states, with temperatures rising further by Friday. Temperatures through Friday are expected to remain below the extreme levels experienced in recent days, however. Ryan Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php