11:40 AM MST, Monday, November 25, 2019

There are a few minor updates to the previous blog:

• The storm is intensifying a little faster while still in western Colorado. This may help focus the highest accumulations in and near the foothills north of I-70, but significant accumulations are expected on the northeastern plains too.
• East and southeast winds tonight (just above the surface) may favor Fort Collins and Cheyenne with the biggest snowfall rates. Northeast winds late tonight and tomorrow morning may shift the main focus to Boulder and the west side of Denver. Snow should taper off from northwest to southeast Tuesday afternoon and evening.
• Blowing snow is likely to be an additional hazard, especially along and east of I-25.
• Major impacts are likely through Tuesday at DIA.
• I would not be surprised to see parts of I-25, I-76, and I-80 closed for a period of time in northeastern Colorado, southeastern Wyoming, and Nebraska.

Most likely accumulations

12-18 inches: Cheyenne, Fort Collins, Estes Park

9-15 inches: Boulder, Broomfield, Arvada, Golden

6-12 inches: DIA, Longmont, Denver, Aurora, Castle Rock

2-4 inches: Colorado Springs

Begins this afternoon in Cheyenne, late afternoon or early evening in Fort Collins, Boulder, and Denver.

Peak snowfall this evening through Tuesday morning, tapers off Tuesday afternoon and evening.

Wednesday-Sunday

• Dry for the Front Range urban corridor Wednesday and Thursday
• Some areas of snow, mainly light, in the mountains and the southern foothills on Thursday
  • Some moderate or heavy snow is possible in the San Juans of southwestern Colorado Thursday
• Some areas of light snow or flurries possible along the Front Range Friday or Friday night
  • some local moderate or heavy snow possible near the higher passes of western Colorado Friday, especially the San Juans
  • valley rain or snow showers in western Colorado Friday
• Probably dry Saturday-Sunday, but will update later in the week