Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 400 PM EDT Fri Apr 30 2021 Valid 00Z Sat May 01 2021 - 00Z Mon May 03 2021 ...Heavy rain and flash flooding across southern Texas will continue into Saturday before shifting into the lower to mid-Mississippi Valley with severe weather possible on Sunday... ...Strong to potentially damaging winds expected to continue across the northern Mid-Atlantic into tonight... ...Heat across the northern Plains will be followed by late-season wet snow over the northern Rockies this weekend... The weather pattern remains quite active this weekend with a variety of hazards over different parts of the nation. First of all, a stalled frontal boundary near the Gulf Coast will continue to interact with a closed upper-level low exiting northern Mexico to funnel Gulf moisture into the Lone Star State. Bouts of showers and thunderstorms, heavy at times, will continue to impact parts of southern Texas through tonight and into the weekend, where a few inches of rain can be expected. The heavy rain will likely lead to flash flooding where the most intense downpours occur. Therefore, WPC has issued a Moderate Risk of Excessive Rainfall near the central portion of coastal Texas into tonight. Rainfall on Saturday will gradually spread further north towards central Texas as the low pressure system slowly lifts in that direction. By Sunday, the focus of moderate to heavy rain will shift northeastward into the lower to mid-Mississippi Valley where severe weather is possible later in the day. Meanwhile, a deep low pressure system is quickly exiting New England into the Canadian Maritimes. Reinforcing shots of colder air wrapping around the deep low will bring strong to potentially damaging winds expected to continue across the northern Mid-Atlantic into tonight. Winds could gust as high as 60 mph between northern Virginia and New Jersey. This will likely lead to downed trees and power lines this afternoon and evening. High Wind Warnings and Wind Advisories have been issued to highlight the hazard. Along with the howling northwesterly winds, below average temperatures will bring the chance for late-April snow showers throughout the Northeast and New England. Elsewhere across the Lower 48, well above normal temperatures will stretch from California to the northern/central Plains today, extending into the Upper Great Lakes on Saturday. High temperatures are forecast to break several daily record highs to end the week from Southern California to Montana, with 80s found as far north as the U.S.-Canada border. Fire weather is a concern across the northern Plains as low relative humidity and gusty winds could produce conditions ripe for fires to spread uncontrollably. Red Flag Warnings have been issued across eastern Montana, western North Dakota, and northwestern South Dakota. Kong/Snell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php