This hazardous weather outlook is for extreme southwest Nebraska... northwest Kansas and east central Colorado. .DAY ONE...TODAY AND TONIGHT... Isolated to scattered thunderstorms are possible across the Tri- State Area this afternoon and evening. There is a marginal risk that storms may become severe for areas along and east of Highway 385 in East-Central Colorado a slight risk brushing up against Greeley and Wichita counties. Possible storm hazards include large hail and damaging wind gusts up to 70 mph, and localized heavy rain. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH TUESDAY... There will be thunderstorm chances for the latter half of the week, especially during the afternoon through overnight hours with some severe weather possible. The threat for locally heavy rainfall and potential flash flooding looks to be from Thursday night into Friday night, for those generally along and north of Interstate 70. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected to be required; however, any storm reports sent to NWS Goodland are greatly appreciated.