Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 354 PM EDT Wed May 30 2018 Valid 00Z Thu May 31 2018 - 00Z Sat Jun 02 2018 ...Heavy rainfall likely along the track of Tropical Depression Alberto while moving toward the Upper Great Lakes as well as the interior Carolinas... ...Primary severe weather threats should generally focus in western Oklahoma with a separate area back into Idaho/Montana... ...Vast warmth in the overnight hours will support widespread temperature records across the eastern half of the U.S... Showers and thunderstorms continue across the Upper Midwest, Great Lakes and Ohio Valley this afternoon as Alberto continues to tracks northward. Additional 1 to 3 inches of rain can be expected as a result of Alberto, with isolated higher amounts possible. A vast area encompassing western Kentucky to Wisconsin and east to Ohio has an increased risk for excessive rainfall and flooding. Alberto is forecast to become post-tropical in nature by early Thursday and continue northward into southern Canada. A separate axis of enhanced rainfall also has focused over the interior Carolinas given favorable orographics. Given substantial tropical moisture accompanying this slowly weakening tropical cyclone, intense rainfall capable of producing flash flood conditions will remain a possibility, particularly along Alberto's forecast track. Likewise, with a history of such issues already noted in North Carolina, expect additional rainfall to exacerbate the situation. Although the track of Alberto will take it into the upper Great Lakes by later this evening, unsettled conditions should generally be expected across the entire eastern third of the nation. Strong to severe thunderstorms, along with an increased threat for heavy rainfall, will focus over portions of the Southern/Central Plains and Midwest over the next couple of days as warm Gulf moisture lifts north over a stalled frontal boundary. Additionally, severe thunderstorms with embedded heavy rain will also be possible across Montana and Northern Plains. WPC has a slight risk for excessive rain along a west-east axis from spanning from Kansas/Oklahoma border to the Tennessee/North Carolina border and for Montana and northwest North Dakota. SPC has a slight risk over the same areas as WPC through Friday morning, with an enhanced risk over southern Kansas/central Oklahoma through Thursday morning. For specific details the both risks of hazardous weather, refer to the WPC and SPC webpages. Much of the West Coast will have cooler than seasonal average temperatures through the end of the week given the presence of the upper trough and enhanced marine layer. Many locations along the East Coast will be rather warm and muggy as tropical moisture continues to lift north through the region. Widespread daily records are likely to be broken each morning anywhere from the Southern Plains eastward to the mid-Atlantic and lower Great Lakes. Portions of the upper Texas coast could stay near 80 degrees tonight. While afternoon highs will likely not afford such widespread records, the Lone Star state will in fact support such occurrences as readings soar above the century mark. Expected temperatures should reach the 100 to 105 degree range across west Texas and along the Red River which would be 10 to 15 degrees above late May climatology. Campbell/Rubin-Oster Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php