DENVER (AP) -- Helicopter crews are planning to expand their searches today for people stranded by flooding in Colorado. But those plans could be hampered by more rain.
The National Weather Service says up to 2 inches of rain could fall today, creating a risk of more flooding and mudslides.
Rescuers have been making progress reaching communities cut off by flooding, but many canyon roads are still either underwater or washed out. And authorities say they don't have an estimate of how many people are still stranded.
[Slideshow: Colorado Flooding
In the hard-hit town of Lyons, rescuers are holding their breath because the only bridge into the town is beginning to crumble.
The National Guard plans to resume airlifts today with help from additional crews from Wyoming.
Guard officials say as of last night, 1,750 people and 300 pets have been rescued either by air or on the ground. So far the effort has been focused on Boulder and Larimer counties. If the weather permits, crews plan to expand the search area today to Longmont, Fort Collins, Fort Morgan and Weld County.