The Eastern Plains are part of the extreme western portion of Tornado Alley ; some damaging tornadoes in the Eastern Plains include the 1990 Limon F3 tornado and the 2008 Windsor EF3 tornado , which devastated the small town . The plains are also susceptible to occasional floods , which are caused both by thunderstorms and by the rapid melting of snow in the mountains during warm weather . Notable examples include the 1965 Denver Flood , the Big Thompson River flooding of 1976 and the 2013 Colorado floods . Hot weather is common during summers in Denver . The city 's record in 1901 for the number of consecutive days above 90 °F ( 32 °C ) was broken during the summer of 2008 . The new record of 24 consecutive days surpassed the previous record by almost a week
2013 Colorado floods
2013 Colorado floods
Colorado