Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 355 PM EDT Wed May 08 2019 Valid 00Z Thu May 09 2019 - 00Z Sat May 11 2019 ...Severe weather and flash flooding are likely in parts of the Plains and eastern half of the CONUS for Thursday and Friday... ...Heavy snow is expected over higher elevations of the Rockies, while a few inches of snow is possible near Lake Superior... A low pressure system currently stationed over the Central Plains will begin moving eastward as it produces heavy rain and thunderstorms for parts of the Central/Southern Plains and the eastern half of the CONUS tonight through Friday. The cold front associated with this system will dip southeastward through northern Texas tonight and will interact with a plume of gulf moisture tomorrow leading to widespread heavy rainfall and thunderstorms over eastern Texas and much of the Southeast through Friday night. There is a Slight Risk of Excessive Rainfall for much of the Mississippi Valley and a Moderate Risk for the ArkLaTex region through Thursday morning. A Slight Risk of Excessive Rainfall is in effect for the Ohio/Tennessee/Lower Mississippi Valley regions as well as a Moderate Risk for Southeast Texas on Thursday and Friday. The Storm Prediction Center issued a Slight Risk of Severe Thunderstorms for southern and eastern Texas through much of the Ohio/Tennessee/Lower Mississippi River Valleys through Friday morning. Hail and damaging winds are expected to be the main threats associated with this event. High pressure will build over the Central Plains bringing colder than average temperatures to the foothills of the Rockies and the midsection of the country through Friday. High temperatures could drop to over 30 degrees below normal in eastern Colorado/New Mexico over this time period. Heavy snow is expected to fall over the Central Rockies where 1 to 2 feet of new snow is likely through Friday evening. Up to 30 inches of snow are possible for the San Juan mountains. Lighter amounts of snow are likely over northeastern Minnesota, northwestern Wisconsin and a small portion of the Upper Peninsula, where 2 to 4 inches of snow are expected. Kebede Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php