More than 200 homes in La Cañada Flintridge and La Crescenta were at risk of being evacuated early Wednesday morning, when a powerful storm surge was expected to bring heavy downpours, flooding and hail to already rain-soaked hillsides.
Los Angeles County officials on Tuesday issued evacuation orders for up to 147 homes in La Cañada and 85 residences in La Crescenta, but the exact number, they said, wouldn't be known until the full force of the storm reached the region.
"We have an entire watershed — 250 acres…ready to move," Mark Pestrella, deputy director of the county flood control district, said at a news conference Tuesday night.
Glendale neighborhoods, where debris basins were at just 5% of capacity Tuesday evening, did not receive evacuation orders.
County officials warned residents to obey evacuation orders because they wouldn't come lightly. After the mudflows early this year, officials were able to draft more targeted maps of properties that were at higher risk of damage, they said.