Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 323 PM EDT Sat Apr 17 2021 Valid 00Z Sun Apr 18 2021 - 00Z Tue Apr 20 2021 ...Several rounds of showers and thunderstorms likely across northern/central Florida through Monday... ...Strong cold front to bring another spring snow event to the Northern Rockies and northern High Plains beginning Sunday afternoon... The active weather currently found across the central Gulf Coast is forecast to slowly move eastward and into the Sunshine State this evening and linger through Monday. A slow moving cold front will be responsible for multiple rounds of showers and thunderstorms. A few storms could turn severe from the central Gulf Coast to northern Florida, with much of the activity shifting into Florida by tomorrow. The Storm Prediction Center has issued a Marginal Risk for severe thunderstorms through Monday morning for the region. Additionally, flash flooding will be a concern due to upwards of 5 inches of rain forecast to fall across northern/central Florida. A Marginal Risk of Excessive Rainfall has been issued to highlight the potential hazard. Meanwhile, light snow found throughout the Southern Rockies will come to an end early Sunday morning as a more significant system drops into the Northern Rockies from Canada. A strong cold front will enter the Northern High Plains by Sunday afternoon and quickly sink southward before reaching the Central Rockies and Central Plains by Monday evening. In its wake, below average temperatures and wintry precipiation will be found across the region. The highest snowfall amounts are forecast to occur along the Bighorn Mountains of north-central Wyoming, where over a foot of snow is possible. Other mountain peaks from northwest Montana to Wyoming, as well as the Black Hills of Wyoming and South Dakota, could see snowfall accumulations over 6 inches. Winter Storm Watches and Winter Weather Advisories have been issued. Light snow could extend as far east as northwest Iowa by late Monday evening as cold temperatures enter the Upper Midwest. Speaking of temperatures, much of the lower 48 will experience below average temperatures over the next few days. The only exceptions will be found across southern Florida and the Western U.S., where above normal temperatures remain locked in place. A few new daily high temperature records are not out of the question for these areas on Sunday. Snell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php