DENVER (KDVR) — A big storm made its way through the state Sunday bringing heavy rain and hail down the Interstate 25 corridor.

According to the National Weather Service, the storm made its way through northern Colorado after the NWS issued a special weather statement for Longmont and Hygiene, as winds up to 50 mph were forecasted with half-inch-sized hail.

Then the NWS warned those living in Aurora, Thornton and Westminster that 40 mph winds and half-inch-sized hail were possible until 7:30 p.m. The storm was moving its way south into Denver.

Many drivers on I-25 north of Denver were reporting that heavy rain and small hail were falling. Drivers were only going 10 to 20 mph. NWS urged drivers to slow down when encountering those hazardous conditions on the highway.

As the storm surged on, Denver, Aurora and Commerce City were under a flash flood warning until 9:15 p.m. More than 650,000 people were impacted by this warning. Residents were urged to move to higher ground and avoid driving through flooded areas.

Pinpoint Meteorologist Travis Michels and the NWS reported preliminary rainfall amounts as of Sunday. The totals are expected to go up by Monday:

  • Aurora: 1.06 inches
  • Boulder: 0.34 inches
  • Buckley Air Force Base: 0.46 inches
  • Denver: 1.42 inches
  • Longmont: 1.2 inches
  • Fort Collins/Loveland area: 1.21 inches
  • Westminster: 2.5 inches

The Pinpoint Weather Team has been forecasting this monsoon surge and issued a Pinpoint Weather Alert Day for Sunday. The entire I-25 corridor was under a flood watch until midnight.

For more stories on Sunday’s storm, check out our other articles: