Dense Fog in Wyoming, September 20, 1997

Name: Dense Fog in Wyoming, September 20, 1997
Start: 1997-09-20T17:35
End: 1997-09-20T22:59
Location: Wyoming

September 20, 1997 · NWS CYS · 2 events in 2 counties and zones

2 dense fog, as filed by the National Weather Service.

The toll

Deaths: 0
Injuries: 0
Property damage: $14,000
Crop damage: None recorded
Events: 2

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.

Event by event

2 dense fog. Local standard time, as filed.

Dense Fog, Laramie Valley

When: September 20, 5:35 PM MST to 10:59 PM MST
Where: Laramie Valley forecast zone
Property damage: $10,000

Wyoming Highway Patrol reported westbound semi rolled over in dense fog at I-80 mile marker 300 at approximately 1745 MST; also reported "1 or 2" vehicle accidents in dense fog near I-80 summit following University of Wyoming football game.

Dense Fog, Laramie Range

When: September 20, 5:35 PM MST to 10:59 PM MST
Where: Laramie Range forecast zone
Property damage: $4,000

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

Every storm in Wyoming in 1997 Every state in 1997 This day in weather history Warnings in Wyoming, September 1997

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: 5618052, 5618053.