A long duration dense fog event occurred late evening June 3rd through the morning of JUne 4th. Fog was observed to be less than a quarter of a mile and as low as a sixteenth of a mile at times.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CYS wrote it up.
A long duration dense fog event occurred late evening June 3rd through the morning of JUne 4th. Fog was observed to be less than a quarter of a mile and as low as a sixteenth of a mile at times.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before the first event at Jun 3, 5:03 PM MST, 4 hours 57 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
1 dense fog. Local standard time, as filed.
Most WYDOT observation sites and webcams showed visibilities between a sixteenth of a mile to less than a quarter mile for several hours.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2025Every state in 2025This day in weather historyWarnings in Wyoming, June 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1254908.