The National Weather Service issued a FLASH FLOOD WARNING Thursday. The warning expired 6:15 p.m. later in the evening.
Minor flooding caused problems for area residents, but no major damage was reported.
Boulder area resident Diana Mac shared a photo with 9NEWS Thursday afternoon.
She wrote, "I live in the Fourmile Fire burn zone. This is my driveway about 15 mins ago." She Tweeted the photo around 5 p.m.
Flooding is a concern in the area, because the natural vegetation burned away, leaving the ground repellent to water.
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