Utah, 2025Dense Fog in Utah, February 21, 2025
February 21, 2025 · NWS GJT · 1 event in 1 county or zone
The Eastern Uinta Basin had received some snow in the hours before dense fog developed on February 21st. However this fog was fairly transient, and the dense fog period lasted less than half an hour.
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- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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 Eastern Uinta Basin had received some snow in the hours before dense fog developed on February 21st. However this fog was fairly transient, and the dense fog period lasted less than half an hour.
What forecasters said that day
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 Grand Junction, CO wrote its last area forecast discussion before the first event at Feb 20, 4:53 PM MST, 16 hours 7 minutes earlier.
Area forecast discussion, Feb 20, 4:53 PM MST, 16 hours 7 minutes before
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</html>Dense Fog, Eastern Uinta Basin
- When
- February 21, 9:00 AM MST to 10:00 AM MST
- Where
- Eastern Uinta Basin forecast zone
- Reported by
- ASOS
- Coordinates
- 40.125, -109.518 (the zone’s center; the record gives no point)
The KVEL ASOS in Vernal recorded an approximately 1 hour period where visibility was reduced due to dense fog. This fog was transient, and dense fog with visibility of 1.4 mile or less lasted for about 20 minutes, while the remainder of the period saw visibility under 1 mile. After 10AM MST, the fog lifted. Due to the short period of dense fog and the localized nature, this does not count as a missed Dense Fog Advisory. No reports of injuries, damages, or fatalities were received.
- Dense Fog
- Fog reducing visibility to a quarter mile or less, filed where it caused accidents or disruption.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Avalanche and Winter Weather in Montana, February 21 to 24, 20251 death · $5,000 · 6 events
- Dense Fog in California, February 21 to 26, 202511 events
- Cold in Illinois, February 21, 20259 events
- Heavy Snow and Winter Weather in Kansas, February 21, 20252 events
- Heavy Snow in Colorado, February 21, 20251 event
- Dense Fog in California, February 21, 20251 event
- Blizzard in Alaska, February 21 to 22, 20251 event
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 2026-09-24. Each event’s entry at NCEI: 1239357.