Dense Fog in Missouri
Every dense fog event the National Weather Service has filed in Missouri, year by year, with the most significant episodes. Fog reducing visibility to a quarter mile or less, filed where it caused accidents or disruption.
The most significant on the map
The most significant dense fog episodes in Missouri.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The record
- Events
- 1,043
- Deaths
- 5
- Injuries
- 15
- Damage
- None recorded
Every year
The most significant
Ranked by deaths, injuries, damage and size together.
- Dense Fog in Missouri, March 17, 2022Dense fog along portions of Interstate 57 between the Mississippi River and Interstate 55 resulted in several fatalities (indirect) in a massive pile-up. The pile-up occurred on both sides of the interstate near Charleston, Missouri in Mississippi County.
- Dense Fog in Missouri, December 18, 1997Patchy dense fog reduced visibility to near zero in spots. With temperatures in the mid 20s, the freezing fog caused some slippery road conditions for early morning commuters.
- Dense Fog in Missouri, December 9, 1997Widespread dense fog caused hazardous travel conditions during the early morning hours. Visibility was as low as a quarter mile in some areas.
- Dense Fog in Missouri, January 6, 1998Dense fog reduced visibility to one quarter mile or less in many locations.
- Dense Fog in Missouri, February 8, 1998Dense fog reduced visibility to as low as 100 feet. The fog was most dense in regions from Cape Girardeau to New Madrid.
- Dense Fog in Missouri, February 10, 2004A combination of dense fog and icy patches on roadways caused a rash of vehicle accidents. In New Madrid County alone, 10 to 15 accidents were reported. No life-threatening injuries were associated with any of the accidents.
- Dense Fog in Missouri, August 8, 2005Dense fog blanketed most of southeast Missouri for several hours, reducing visibility to one quarter mile or less.
- Dense Fog in Missouri, February 10 to 11, 2006Widespread dense fog reduced visibility to one quarter mile or less.
- Dense Fog in Missouri, November 7 to 8, 2006Widespread dense fog occurred as a result of clear skies, calm winds, and residual low level moisture. Visibility was at or below one quarter mile.
- Dense Fog in Missouri, October 17, 2007Widespread dense fog reduced visibility to one quarter mile or less. High pressure over the southern Appalachian Mountains produced a moist southeast low level wind flow just above the surface. Clear skies and nearly calm winds at the surface contributed to the fog.
- Dense Fog in Missouri, March 29, 2007Widespread dense fog occurred during the early morning hours. A light east to southeast wind flow around high pressure over the southern Appalachians brought increased humidity. Visibility was frequently below one-quarter mile.
- Dense Fog in Missouri, December 21, 2007Widespread dense fog reduced visibility to one-quarter mile or less. The lower levels of the atmosphere were very moist due to rainfall the previous day. A nearly stationary trough of low pressure extending northeast along the Ohio River resulted in a light convergent wind flow.
- Dense Fog in Missouri, December 11, 2007Widespread dense fog blanketed southeast Missouri during the morning hours. Visibility was reduced to one-quarter mile or less. A very light southerly wind flow of moist air contributed to the dense fog.
- Dense Fog in Missouri, December 18 to 19, 2008Widespread dense fog reduced visibility to one-quarter mile or less. The dense fog occurred along and just ahead of a warm front. Light east to southeast winds brought moist air over cold, icy ground.
- Dense Fog in Missouri, December 26, 2008Dense fog blanketed much of southeast Missouri as milder south winds blew over cold, frozen ground. Visibility was reduced to one-quarter mile or less.
- Dense Fog in Missouri, August 22 to 23, 2008Widespread dense fog reduced visibility to one quarter mile or less. The dense fog formed over ground that was saturated from heavy rainfall the previous day.
- Dense Fog in Missouri, November 17, 2010Widespread dense fog developed over southeast Missouri in association with clear skies and very moist southwest winds over cold ground. Visibility was less than one quarter mile on a widespread basis.
- Dense Fog in Missouri, March 23, 2010Visibility was at or below one-quarter mile across southeast Missouri. At least a couple of school districts cancelled classes or delayed opening by one hour, including New Madrid schools. An auto accident in Cape Girardeau County was blamed on the fog.
- Dense Fog in Missouri, September 23, 2011Due to slowly clearing skies and nearly calm winds, widespread dense fog formed across southeast Missouri. Visibility was at or below one-quarter mile. A weak surface high pressure ridge over the Mid-Mississippi Valley provided the light winds and clearing skies.
- Dense Fog in Missouri, February 1, 2012Widespread dense fog reduced visibility to one-quarter mile or less for up to a couple of hours. The fog occurred with light winds in the vicinity of a weak cold front. The fog followed showers and thunderstorms that moistened the ground.
- Dense Fog in Missouri, December 7, 2012Widespread dense fog blanketed southeast Missouri. Visibility was reduced to one-quarter mile or less. The dense fog was associated with light winds and high humidity in the vicinity of a warm front that was draped across southeast Missouri.
- Dense Fog in Missouri, March 29 to 30, 2013Widespread dense fog formed as skies cleared out and winds became nearly calm. Moist ground from rainfall the previous night contributed to the dense fog. High pressure moved slowly east across the Ohio Valley, resulting in favorable conditions for fog.
- Dense Fog in Missouri, December 2 to 3, 2013Southerly winds ahead of a cold front over the Plains brought lots of moist air northward from the Gulf of Mexico. This resulted in widespread dense fog during the late night and early morning hours. Visibility was one-quarter mile or less.
- Dense Fog in Missouri, April 29, 2013Areas of dense fog formed due to the combination of clearing skies and light winds near a surface high over the Tennessee Valley. Due to recent rains, there was plenty of moisture at ground level. Visibility was occasionally one-quarter mile or less across southeast Missouri.
- Dense Fog in Missouri, December 5, 2014Widespread dense fog blanketed southeast Missouri during the early and mid-morning hours. Visibility was reduced to one-quarter mile or less. The dense fog formed along a stationary front that extended from the southern Plains northeast across the Lower Ohio Valley.
More
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 2026-09-24.