Utah, 2023

Dense Fog in Utah, January 15 to 16, 2023

January 15 to 16, 2023 · NWS GJT · 1 event in 1 county or zone

Low level moisture remained trapped across eastern Utah. This led to the development of dense fog across the Eastern Uinta Basin.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

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The toll

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.

What happened

The episode as NWS GJT wrote it up.

Low level moisture remained trapped across eastern Utah. This led to the development of dense fog across the Eastern Uinta Basin.

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 Jan 15, 5:05 PM MST, 3 hours 55 minutes earlier.

Area forecast discussion, Jan 15, 5:05 PM MST, 3 hours 55 minutes before
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Hazardous weather outlook, Jan 15, 3:06 AM MST, 17 hours 54 minutes before
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In the hours before

Local storm report, Jan 15, 4:59 PM MST, 4 hours 1 minute before
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Local storm report, Jan 15, 5:35 PM MST, 3 hours 25 minutes before
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Local storm report, Jan 15, 6:59 PM MST, 2 hours 1 minute before
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Local storm report, Jan 15, 7:00 PM MST, 2 hours before
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Local storm report, Jan 15, 7:50 PM MST, 1 hour 10 minutes before
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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 dense fog. Local standard time, as filed.

Dense Fog, Eastern Uinta Basin

When
January 15, 9:00 PM MST to January 16, 9:00 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)

Dense fog was observed across the Eastern Uinta Basin including at the Vernal Regional Airport as visibility was reduced to less than one quarter of a mile for several hours.

What these are

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.

The same day elsewhere

More

Every storm in Utah in 2023Every state in 2023This day in weather historyWarnings in Utah, January 2023

Sources

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: 1065444.