Update: Jackson, Larimer, Grand and Boulder counties and parts of Central Colorado placed under a winter storm watch

Published May 5, 2025

An updated winter storm watch was released by the National Weather Service on Monday at 3 a.m. valid from Tuesday 6 a.m. until Wednesday 6 a.m. for South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder counties above 9,000 feet and South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and West Park counties above 9,000 feet.

“Heavy snow possible. Total snow accumulations 12 to 22 inches possible, heaviest amounts on the crest and eastern slopes of the Front Range. Much lighter snow in valleys of Summit County to Vail Pass,” says the NWS. “Some snow will fall this afternoon and tonight, and slush/snow can be expected on the higher passes. More significant travel impacts can be expected Tuesday and Tuesday night.”

“Travel could be very difficult, including I-70 east of the Eisenhower Tunnel, the Peak to Peak Highway, US40 and Berthoud Pass area, and Highway 14 over and east of Cameron Pass. The hazardous conditions will impact the late Tuesday morning and Tuesday evening commutes,” says the NWS. “Monitor the latest forecasts for updates on this situation.”

Staying safe on winter roads: Winter driving tips from the NWS

Winter’s icy grip often turns roads treacherous, leading to over 6,000 weather-related vehicle fatalities and more than 480,000 injuries each year. When you find yourself on snowy or freezing rain-slicked roads, your top priority should be safety. Slow down and exercise caution. In temperatures near freezing, it’s prudent to assume icy patches on the road and adjust your driving accordingly. Be on alert for ice accumulating on power lines and tree branches, as they may break and fall. If possible, avoid driving in these conditions altogether. But if you must venture out, choose routes with fewer trees and power lines, and never touch a downed power line. If you encounter one, dial 911 immediately. Here are additional winter driving tips from the NWS:

Share your travel plans:

When traveling out of town in hazardous winter weather, inform your family or friends of your destination, planned route, and estimated time of arrival.

Prepare your vehicle:

Ensure your gas tank is full and equip your vehicle with essential winter supplies such as a windshield scraper, jumper cables, a small shovel, flashlight, cell phone, blanket, extra warm clothing, drinking water, and high-calorie non-perishable food.

Stay calm when stranded:

If you become stranded, stay composed. Notify someone about your situation and location. Avoid attempting to walk to safety. Attach a cloth to your car’s antenna or mirror to signal that you require assistance. Make your vehicle more visible by using the dome light and flashers.

Be aware of snow plows:

Keep an eye out for snow plows and allow them ample room to pass. Only overtake a plow when you have a clear view of the road ahead.

Check road conditions:

Before embarking on your journey, verify the current road conditions to make informed travel decisions.

Stay safe on wintry roads with these valuable winter driving tips from the NWS, and reduce the risk of accidents during challenging weather conditions.

Source: The National Weather Service