Dense Fog across the High Plains
Dense Fog Advisories blanketed the high plains earlier this morning, extending from Nebraska to Wyoming and northern Colorado. National Weather Service (NWS) Weather Forecast Offices (WFOs) published social media posts online to remind the general public of how dense the fog could be, with less than a 1/4 mile visibility possible across their respective County Warning Areas (CWA). Social media posts from WFO Boulder, CO and WFO North Platte, NE can be seen below.
Hourly surface observations show the widespread fog initially located over Nebraska (and South Dakota), which then spread westward towards Wyoming and southward across northeastern Colorado.
Surface Observations from ~0400Z to ~1400Z , 15 October 2025
High temporal resolution imagery from geostationary satellites (10-min, Full Disk ABI data) shows the evolution of the fog, seen in ‘aqua to grey’ colors within the Nighttime Microphysics RGB. The GOES RGB exhibits a 2-km spatial resolution.
GOES ABI Nighttime Microphysics RGB from ~0400Z to ~1400Z, 15 October 2025
The JPSS VIIRS version of the Nighttime Microphysics RGB captures the fine details of the fog and low stratus at 750-m spatial resolution. Four overpasses from JPSS satellites passed over the domain from ~0800 to ~0940Z, 15 October 2025.
JPSS VIIRS Nighttime Microphysics RGB from ~0800Z to ~0940Z, 15 October 2025
Additionally, nighttime visible imagery observed the reflected moonlight off of the fog and low stratus, while capturing the emitted lights from cities and towns across Colorado, Wyoming and Nebraska. The product also has a spatial resolution of 750-m.
NOAA-20 VIIRS NCC at 0849Z, 15 October 2025
