Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 330 PM EDT Sat Mar 16 2019 Valid 00Z Sun Mar 17 2019 - 00Z Tue Mar 19 2019 ...Major river flooding will continue across parts of the Mississippi and Missouri River Basins... ...Snow melt may lead to areal flooding across portions of the Pacific Northwest, Northern Rockies and surrounding areas... ...Quiet weather for much of the CONUS this weekend... Numerous locations along the Missouri and Mississippi Rivers, and their tributaries, will continue to have major to historic flooding for at least into early next week thanks to heavy rainfall earlier this week falling on frozen ground and a deep snow pack that lead to intense and quick melting. Flood warnings and advisories remain in effect, mainly across parts of the eastern Nebraska, Iowa, and southern Wisconsin. Warmer temperatures this weekend across much of the Northwest, Rockies and adjacent High Plains will cause snow melt and runoff, which may lead to low-lying areas to flood given that the ground is still frozen. Should ice jams occur during this time, rivers and streams may rise quickly out of their banks. Showers and thunderstorms will be likely across Florida each daily near a lingering frontal boundary. Lake effect snow showers with mainly light accumulations are possible across the Great Lakes. Elsewhere, surface high pressure will dominate and keep calm conditions in the forecast. Temperatures across much of the country look to be near or below normal with the greatest departures expected across the Southern Plains where afternoon highs could be 15 to 25 degrees below normal. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php