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An upper ridge remains centered just east and south of Colorado, bringing continued southwest monsoon flow to the state. On Tuesday, a shortwave embedded in the flow will shift across northern Colorado, bringing increased upper level flow and lift to much of the state. Showers and thunderstorms will develop through the morning and afternoon across the mountains, shifting east into the plains by early to mid afternoon. Activity over the plains will move from west to east. The main threats with storms today will be lightning and flash flooding, especially over burn scars and urban areas. An additional wind and hail threat, though marginal, will exist with storms over the far eastern plains. Otherwise, temperatures on Tuesday will again be hot with highs in the low to upper 90s across the plains, and nearing 80 in the mountain valleys. Winds will also become breezy across the plains by late afternoon, sustained 10-20 mph.
Tuesday severe weather outlook. Thunderstorms possible across all of southern Colorado, with flash flooding and frequent lightning the main threats. An additional threat for large hail and damaging winds exists in far eastern Colorado, though coverage of such storms will be isolated.