Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 632 PM EDT Sat Jun 06 2020 Valid 00Z Sun Jun 07 2020 - 00Z Tue Jun 09 2020 ...Tropical Storm Cristobal to make landfall in Louisiana late Sunday and track into the Lower Mississippi Valley on Monday with heavy rain, strong wind gusts, coastal flooding, and isolated tornadoes possible... ...Strong low pressure system to generate severe thunderstorms across the northern Plains through Monday, extreme fire weather potential in southeast Colorado... ...The West cools off substantially with a chance for heavy snow in the northern Rockies, sizzling temperatures take hold of the Plains... Cristobal continues its north heading this afternoon and has its sights set on the central Gulf Coast tomorrow. Landfall likely occurs somewhere along the coast of Louisiana late Sunday along with the threat of tropical storm force winds, torrential rainfall, potentially life-threatening storm surge, high surf, and tornadoes. Due to the storm's broad and asymmetric characteristics, the worst impacts should set up along the storm's eastern flank, making far eastern Louisiana, southern Mississippi, and southern Alabama most at risk for Cristobal's worst impacts. Latest rainfall forecast call for 6+ inches in the Mississippi Delta and into southern Mississippi. Heavy rainfall extends as far east as Florida where outer bands will generate heavy downpours. A Slight Risk for flash flooding is in place for much of northern and central Florida this evening. Cristobal is forecast to head for the Lower Mississippi Valley on Monday ushering very heavy rainfall and gusty winds throughout the region. A Moderate Risk for flash flooding has been issued in parts of the area on Monday. Farther north, guidance continues to hint at the development of a predecessor rain event over the portions of the Northern Plains and Upper Midwest Monday evening with anywhere from 1 to 2 inches of rainfall possible. Cristobal is not the only storm system in town as a potent upper trough swings through the western U.S. this weekend and into the start of the upcoming week. Severe weather is likely to set up shop in the northern High Plains and central Rockies this afternoon and evening thanks to a strengthening low pressure system in the Canadian Prairies. By Sunday, the storm's warm sector moves over the Dakotas and western Minnesota where severe storms should develop in the afternoon and lasting into the evening hours. The cold front inches slowly east on Monday and will act as a catalyst for additional severe storms and heavy rainfall over the northern and central Plains. Despite the wetter pattern in the northern Plains look for dry, hot, and windy conditions in parts of the southern High Plains and Four Corners region are a recipe for a significant fire weather risk. The latest fire weather outlook through the remainder of the weekend include a critical risk from Arizona to Colorado with an extreme threat for fire weather in southeast Colorado on Sunday. Temperature-wise, much cooler temperatures than both normal and recent weeks will engulf the West. Temperatures aloft will be cold enough to allow for accumulating snowfall in the Bitterroot and Sawtooth mountain ranges both Sunday and Monday. While parts of the Northwest witness wintry conditions, summer heat reigns over the High Plains where high temps in the 90s spread northward into the northern Plains by Sunday and the Upper Midwest on Monday ahead of the intensifying low pressure system. Farther south, triple digits high temps are likely across West Texas on Monday. Cooler and more comfortable temperatures arrive across the Northeast tonight with seasonally cool and less humid conditions on Sunday. Mullinax Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php