Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 402 PM EDT Tue May 11 2021 Valid 00Z Wed May 12 2021 - 00Z Fri May 14 2021 ...Widespread rain and thunderstorms to persist across the Gulf Coast states... ...Below average temperatures to begin receding into Deep South tomorrow... A meandering frontal boundary is forecast to remain across the Gulf Coast states and eventually slowly sink southward on Wednesday into Thursday. Moist inflow from the Gulf of Mexico interacting with the front should enable widespread showers and thunderstorms in those areas, especially through tonight. There is a Slight Risk of Severe Weather tonight for parts of southern Texas. The overnight nature of the Severe threat poses a special risk as folks may be caught off guard by strong winds and hail shrouded in the cover of darkness. An inch or two of rain, with locally higher amounts possible, is expected for portions of eastern Texas into the Lower Mississippi Valley and the Southeast. This rainfall along with wet antecedent conditions will lead to the potential for scattered flash floods in those areas. A Slight Risk of excessive rainfall as well as a Flash Flood Watch are in place through Wednesday afternoon. Strong to severe thunderstorms are also a possibility. Some showers and thunderstorms are possible Wednesday, though are expected to lessen in coverage later Wednesday into Thursday as the front gets suppressed. Meanwhile in the Northeast, a sequence of low pressure waves could cause light to moderate precipitation through Wednesday. Mainly rain is expected, but higher elevations could see some mix or light snow overnight. Another couple of days of cooler than normal temperatures are forecast for the central, southern and eastern U.S. behind a potent cold front and beneath an area of substantial high pressure. Freeze and Frost Warnings are once again in effect for portions of the Great Lakes and Upper Midwest. Low temperatures are expected to be in the 30s in the Great Lakes, with some areas reaching 20 degrees below average tonight. There's a potential for setting records of low maximum temperatures over the Carolinas, parts of Texas and the Lower Mississippi Valley on Wednesday. Meanwhile, Florida can expect warm temperatures south of the front, and the West Coast will also see building warmth with above normal temperatures over the next few days. The Elevated Fire Weather threat over northern California and the four corners region should come to an end by this evening. Kebede/Tate Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php