🟠 Severe

Winter Storm Watch

Larimer County Below 6000 Feet/Northwest Weld County; Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County; North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County; Elbert/Central and East Douglas Counties Above 6000 Feet

Winter Storm Watch issued May 4 at 12:51AM MDT until May 6 at 3:00PM MDT by NWS Denver CO

Alert Description

* WHAT...Heavy snow possible. Total snow accumulations between 3 and 9 inches expected, heaviest on colder surfaces and west of I-25. * WHERE...Fort Collins, Boulder and the western suburbs of Denver, Denver, and Castle Rock. * WHEN...From Tuesday evening through Wednesday afternoon. Heaviest Tuesday night into Wednesday morning. * IMPACTS...Heavy wet snow will accumulate on tree branches and powerlines, possibly causing them to break and lead to power outages. Despite lesser accumulations on roadways, slick and hazardous conditions are still possible for the Wednesday morning commute.

Safety Instructions

Monitor the latest forecasts for updates on this approaching storm.

Time Information

Effective

May 6, 2026, 2:00 AM

Expires

May 4, 2026, 9:00 PM

Issued

May 4, 2026, 6:51 AM

Alert Details

Severity

Severe

Urgency

Future

Certainty

Possible

Issued By

NWS Denver CO

National Weather Service