Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 307 AM EDT Tue Mar 19 2019 Valid 12Z Tue Mar 19 2019 - 12Z Thu Mar 21 2019 ...Heavy rainfall possible across southern Florida... ...Major to historic river flooding will continue across parts of the Mississippi and Missouri River Basins with areal flooding also possible in the Northwest/Northern Rockies... A front lingering across southern Florida will continue to produce showers and thunderstorms through Tuesday, with locally heavy rainfall possible. Flash flooding should be a marginal threat at best, especially near the highly urbanized Miami area. In the central states, a couple of weak systems may bring mainly light rain (with snow possible to the north) from the central Plains on Tuesday, into the Mississippi Valley, Great Lakes, and Ohio Valley Wednesday into Thursday. And a cold front moving into California and the Southwest Wednesday and Thursday will bring increased chances for rain and mountain snows to California, the Central Great Basin, and into the Southwest/Four Corners region. Temperatures east of the Rockies should be mostly near or below normal for this time of the year with the greatest departures from normal across parts of west Texas, the High Plains, and Florida/the Southeast. Major to historic and catastrophic flooding will continue across parts of the Missouri and Mississippi River Basins due to rapid snowmelt as a result of heavy rainfall last week. A round of light rain showers moving through on Tuesday may only exacerbate flooding across the region as well. Flood warnings and advisories remain in effect, mainly focused across parts of eastern Nebraska and western Iowa. Areal flooding is also a concern across parts of the Northwest and Northern Rockies/High Plains as well as warm temperatures lead to accelerated snowmelt and the potential for ice jams. Santorelli Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php