2006 Weather in Review


The Weather Forecast Office in St. Louis, Missouri experienced more severe weather than any other office in the National Weather Service this year, with a total of 723 severe weather events recorded.

(click above for details)

  • 102 in Missouri
  • 124 in Illinois

The 2006 tornado count for Missouri and Illinois this year surpassed the previous record year of 2003 when 84 tornadoes were recorded in Missouri and 120 in Illinois. 




High Temperature

101 F 103 F

101 F

Days of 100 F
or greater

6  9


Days of 90 F
or greater
53 45



Low Temperature

5 F -2 F -2 F
Days of 0 F
or less







(departure) (8.83) (10.16)  (8.83)

Yearly Snowfall

11.1" 16.6" 



2 January Tornadoes
16 February Hail

11 March Tornadoes
12 March Tornadoes
20-21 March Snow
02 April Severe Event
24 May Severe Event

22 June Severe
19 July Derecho
21 July Severe Event

22 September Tornadoes
30 November- 1 December Heavy Snow and Ice Storm 



Monthly Climate Summaries

Drought Monitor 





The year started off extremely warm. In fact, Quincy experienced the warmest January on record, while Columbia and St. Louis observed their second and third warmest, respectively. Daily average temperatures at St. Louis, Columbia, and Quincy remained above normal the entire month of January. St. Louis and Columbia never observed a high temperature below freezing that month, which has only occurred two other times in the more than 100 years of records kept.

Two snow storms brought the region a taste of winter on February 8th and March 20th. Although, early spring will likely be remembered for thunderstorms and not snow, as the severe weather season came early and hit hard this year. A total of 48 tornadoes occurred the 11th and 12th of March in Missouri and Illinois. This tornado outbreak included a F4 tornado in Monroe County, Missouri. This was the first voilent tornado to occur in the St. Louis County Warning Area since 1981.

F4 Tornado Damage North Of Paris, Missouri

March 12th F4 Tornado Damage Near Paris, MO

Tornado Damage to House near Festus, Missouri












March 11th Tornado Damage near Festus, MO

Less than a month later, on April 2nd, a line of severe thunderstorms moved across the region, producing straight line winds in excess of 70 mph and 9 tornadoes.

Tornado Damage in Fairview Heights, Illinois

April 2nd Tornado Damage in Fairview Heights, IL  

The two severe weather events that will mark this year in history occurred in the middle of July during an excessive heat wave.  A bowing line of severe thunderstorms traveled southwest from central Illinois and directly hit the St. Louis metropolitan area with winds up to 100 mph. This caused significant damage to trees and power lines, as well as structural damage to houses and businesses. Power outages to more than a half of a million Ameren customers were recorded.

Damage to the Switzer Building Downtown St. Louis

July 19th Structural Damage in Downtown St. Louis

Less than 48 hours after this event, another line of severe thunderstorms moved from central Missouri through the Greater St. Louis metropolitan area and into southwest Illinois. Additional damage to trees and power lines caused the number of customers without power to rise to a historic 750,000. 


This was the largest power outage ever to occur in the region according to Ameren Electric Company.  Many people of the region suffered for up to seven days through unbearable heat and humidity with no means to cool their homes.  Temperatures during this period climbed into the upper 90s and heat index values were at times as high as 114 degrees.

Tornado Damage Near Germantown, IL

July 21st Tornado Damage near Germantown, IL

The heat was on by late July and August. St. Louis recorded a high temperature of 101 degrees for four consecutive days between July 30th and August 2nd and Columbia reached 103 degrees twice during this same period of time. The heat and lack of rainfall during the summer caused extreme drought conditions across the region.

Another significant tornado outbreak occurred on September 22nd.  Amazingly, some of the very same locations that saw tornadoes during the 11th and 12th of March outbreak fell victim to this outbreak. One of the supercells that produced several long track tornadoes in the St. Louis county warning area ultimately produced a F4 tornado in Perry County, Missouri which caused substantial damage to Crosstown. 

Tornado Damage - Madison County, Missouri

Tornado Damage Near Mine La Motte, MO

Iron County Tornado Near Highway N

Tornado Near Highway N in Iron County

A significant winter storm hit the region November 30th and December 1st with some locations from central Missouri to west central Illinois receiving up to 18 inches of snow.  Across eastern Missouri and southwest Illinois up to an inch of freezing rain lead to another widespread power outage. More than 500,000 people were left without power for up to a week during the coldest air of the season thus far. Unfortunately, many of these same customers lost power during the July outages.

Significant Ice Accumulation in Waterloo, IL

Significant Ice Accumulation in Waterloo, IL

Some improvement in drought conditions were experienced during the last month of 2006, thanks in large part to the aforementioned winter storm. Much of the region continued to be in a long term drought with rainfall deficits between 5 and 10 inches common for the year 2006.

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