Colorado, 2009Dense Fog in Colorado, November 29 to 30, 2009
November 29 to 30, 2009 · NWS GJT · 1 event in 1 county or zone
A moist and stable airmass over the area resulted in widespread dense fog formation shortly after sunset, which lasted through the early morning hours.
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.
- Tornadoes
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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.
A moist and stable airmass over the area resulted in widespread dense fog formation shortly after sunset, which lasted through the early morning hours.
Dense Fog, San Juan River Basin
- When
- November 29, 6:00 PM MST to November 30, 6:20 AM MST
- Where
- San Juan River Basin forecast zone
- Reported by
- Emergency Manager
- Coordinates
- 37.194, -107.048 (the zone’s center; the record gives no point)
A cold and saturated airmass in the wake of a departing winter storm system was in place over the San Juan River Basin. This allowed widespread dense fog to develop shortly after sunset from areas near Pagosa Springs southward to the New Mexico border. Visibilities in some areas were reduced to only 100 to 200 feet along highway 84.
- 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.
- Winter Storm and Winter Weather in Texas, November 29, 2009$500,000 · 3 events
- Tornado in Texas, November 29, 2009$75,000 · EF1 · 1 event
- High Surf in Hawaii, November 29 to 30, 200910 events
- Heavy Rain in Hawaii, November 29 to 30, 20092 events
- Tornado in Arizona, November 29, 2009EF0 · 1 event
- Heavy Rain in Arizona, November 29, 20091 event
- Flash Flood in Arkansas, November 29, 2009$10,000 · 1 event
- Winter Storm in Arizona, November 29 to 30, 20091 event
- High Wind in Texas, November 29 to 30, 20091 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 2026-10-01. Each event’s entry at NCEI: 198718.