Update, October 28, 2026, 2:04 a.m. CDT: The National Weather Service expanded the dense-fog advisory to Gove, Greeley, Logan and Wichita counties in Kansas in its 12:42 a.m. CDT bulletin. It runs through 11 a.m. CDT Wednesday, with visibility of a quarter-mile or less. A companion advisory continues for parts of eastern Colorado, northwestern and west-central Kansas and southwestern Nebraska until 10 a.m. MDT / 11 a.m. CDT. This advisory supersedes the conditional overnight outlook below.

Earlier Updates and Context:

Update, October 27, 4:03 p.m. CDT: Dense fog may redevelop Tuesday evening into Wednesday morning across east-central Colorado, northwest Kansas and extreme southwestern Nebraska, the National Weather Service’s Goodland office said in its 1:32 p.m. MDT outlook.

The possible fog includes parts of Interstate 70 in eastern Colorado and northwest Kansas. The agency said visibility could fall to a quarter-mile or less if dense fog develops. This is a conditional forecast of an overnight hazard, rather than confirmation that fog has already returned.

The earlier Goodland advisory below had been scheduled through 3 p.m. MDT Tuesday. Earlier observations and advisory times are retained as history and should not be read as current conditions.

Earlier Reporting and Advisory History:

Updated October 27, 2026, 11:07 a.m. CDT: NWS’s 9:51 a.m. MDT Goodland bulletin continues the High Plains fog advisory through 3 p.m. MDT, or 4 p.m. CDT, adding Decatur County, Kansas. Visibility may be a quarter-mile or less. This supersedes the noon MDT expiration below.

Denver and northeastern Colorado advisories expired at 10 a.m. MDT after visibility improved across most of the area; pockets may persist near Fort Morgan. The Raton Pass and Far Northeast Highlands advisory also expired as fog diminished, according to NWS’s 9:53 a.m. MDT bulletins.

Earlier Updates and Reporting:

Updated October 27, 2026, 10:17 a.m. CDT: NWS extended Denver-area dense-fog advisories through 10 a.m. MDT, or 11 a.m. CDT. Its 8:39 a.m. MDT bulletin includes Denver, Fort Collins, Boulder, Greeley, Fort Morgan and Byers, reporting visibility below one mile. A separate advisory for Limon and southern Lincoln County runs to the same time, with visibility of one to two miles. These times supersede the earlier Denver-area expiration below.

Earlier Updates and Reporting:

Updated October 27, 2026, 9:05 a.m. CDT: Goodland’s latest bulletin extends the covered fog period through noon MDT, or 1 p.m. CDT, and includes additional Kansas counties.

The 7:44 a.m. MDT bulletin covers Yuma, Kit Carson and Cheyenne counties in Colorado; Cheyenne, Rawlins, Sherman, Thomas, Sheridan, Wallace, Logan, Gove, Greeley and Wichita counties in Kansas; and Dundy County, Nebraska. NWS warns of visibility of a quarter-mile or less. The earlier Goodland expiration times below are superseded.

Earlier Update — Updated October 27, 2026, 7:07 a.m. CDT: Added four northeastern Colorado counties covered by the Denver office’s 4:09 a.m. MDT advisory expansion.

Logan, Washington, Sedgwick and Phillips counties are under a dense-fog advisory until 10 a.m. MDT Tuesday. The National Weather Service warns of visibility of a quarter-mile or less, including around Sterling, Akron, Julesburg and Holyoke.

Earlier Update — October 27, 2026, 6:07 a.m. CDT: Added the new northeastern New Mexico advisory issued at 4:44 a.m. MDT.

The National Weather Service’s Albuquerque office issued a dense-fog advisory for the Johnson and Bartlett Mesas, including Raton Pass, the Far Northeast Highlands and Union County. It runs through 10 a.m. MDT Tuesday, with visibility of half a mile or less.

Earlier Update — October 27, 2026, 5:02 a.m. CDT: Added a new southwest and west-central Kansas advisory issued at 4:44 a.m. CDT.

The National Weather Service’s Dodge City office added Scott, Lane, Hamilton, Kearny, Finney, Hodgeman, Stanton, Grant, Haskell, Gray and Ford counties to a dense-fog advisory through 10 a.m. CDT, or 9 a.m. MDT where applicable. Visibility may fall to a quarter-mile or less.

Earlier Coverage — October 27

Denver-area and northeastern Colorado advisories remain scheduled through 9 a.m. MDT. A Goodland-office notice covers Yuma, Kit Carson and Cheyenne counties in Colorado until 10 a.m. MDT; Cheyenne, Sherman, Greeley and Wallace counties in Kansas and Dundy County, Nebraska, until 11 a.m. CDT.

El Paso County, including Colorado Springs, remains under a separate advisory through 9 a.m. MDT, with visibility below one mile.

NWS warns that low visibility could make driving hazardous and advises slowing down and leaving more following distance. Scheduled expiration times do not guarantee simultaneous clearing everywhere.

Sources: NWS Goodland, October 28 advisory expansion; earlier dated bulletins retained as history: https://www.weather.gov/wwamap/wwatxtget.php?cwa=gld&wwa=all