Update: Winter storm warning issued for Jackson, Larimer, Grand and Boulder counties until early Thursday

Published Feb 24, 2026

An updated winter storm warning was issued by the National Weather Service on Tuesday at 12:06 p.m. valid from 8 p.m. until Thursday midnight for South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder counties above 9,000 feet.

“Heavy snow expected. Total snow accumulations 8 to 16 inches, with locally up to 22 inches in and near the mountains of Rocky Mountain National Park. Winds gusting as high as 65 mph,” describes the NWS. “Heavy snow is expected to quickly develop this evening and continue through Wednesday morning, before diminishing Wednesday afternoon.”

“Snow and blowing snow will reduce visibility to a quarter mile or less. Travel could be very difficult, especially tonight,” says the NWS. “If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency.”

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

Winter weather can make driving treacherous, leading to over 6,000 weather-related vehicle fatalities and over 480,000 injuries each year. When traveling during snow or freezing rain, prioritize safety by slowing down. In near-freezing temperatures, it’s safest to assume that icy conditions exist on roadways and adjust your driving accordingly. Be cautious of ice accumulating on power lines or tree branches, which can lead to snapping and falling hazards. If possible, avoid driving in such conditions. If you must venture out, opt for routes with fewer trees and power lines. Never touch a downed power line, and immediately dial 911 if you come across one. Here are additional winter driving tips from the NWS:

Share your travel plans:

When venturing out of town in hazardous winter weather, be sure to inform family or friends of your destination, your intended route, and your estimated arrival time.

Prepare your vehicle:

Ensure your gas tank is full and equip your vehicle with essential winter supplies, including 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, remain composed. Inform someone about your situation and location. Avoid attempting to walk to safety. Indicate that you need assistance by attaching a cloth to your car’s antenna or mirror, and make your vehicle more visible by using the dome light and flashers

Be mindful 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