Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 357 AM EDT Wed Sep 07 2016 Valid 12Z Wed Sep 07 2016 - 12Z Fri Sep 09 2016 ...Gusty winds and coastal flooding will gradually subside along the Northeastern U.S. coast today... ...Frontal boundary expected to bring severe thunderstorms and heavy rain from the central plains to the Midwest... ...Heavy rain possible across the southwestern U.S. associated with Hurricane Newton... Locally gusty winds and coastal flooding over portions of Long Island and southeastern New England will gradually diminish as the area of low pressure formerly Hermine, continues to weaken. Additional light rainfall amounts are possible along the coast from Delaware to southern Maine. Scattered to widespread showers and thunderstorms are forecast from the central Plains to the Upper Midwest along a slow-moving frontal boundary. The Storm Prediction Center is forecasting a slight risk for severe thunderstorms to develop across the east side of the Dakota and western Minnesota today. Heavy rain will also be possible, especially for the Upper Great Lakes/Upper Mississippi valley, which could produce flooding in some areas. On Thursday as an upper-level disturbance moves into the northern plains, the northern portion of the frontal system will begin to move east across the Great Lakes, while areas of showers and thunderstorms continue farther south from the central/southern plains to the Mid-Mississippi valley. Hurricane Newton continues to travel northward across the gulf of California toward Mexico and the U.S. Southwest. The National Hurricane Center forecasts Newton to quickly weaken to a Tropical Storm this morning and dissipate over southeast Arizona by late tonight/overnight hours. Tropical moisture associated with Newton is expected to produce total rain accumulations of 1 to 3 inches with locally higher amounts over southeastern Arizona and southwestern New Mexico through Thursday. Heavy rain could cause flash flooding and mud slides, especially in mountainous terrain. WPC has issued a moderate risk for excessive rainfall across southern Arizona and New Mexico. Temperatures are forecast to warm across the eastern third of the nation through mid-week as high pressure aloft builds overhead. Afternoon high temperatures are forecast to be 10 to 20 degrees above average across much of the eastern U.S. today and Thursday, with temperatures rising well into the 90s for much of the East Coast. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php