Thunderstorms & Tornadoes

2024

• May 8th - 9th: Long-Duration Severe Event (Tornado, Damaging Winds, Very Large Hail, and Flooding)

2023

• January 12th: Damaging Winds and Tornadoes
• May 16th: Damaging Winds, Hail, and Tornadoes
• August 7th: High-End Damaging Winds and Knox County EF-2

2022

• May 6th: Damaging Winds and Hail 

2021

• December 11th: Damaging Winds
• June 21st: Damaging Winds and Hail 
• April 8th: Scott County, TN Tornadoes

2020

• April 12th: Easter Sunday Tornado Outbreak (ArcGIS Online StoryMap)

2016

• July 8th: Southern Appalachia Derecho

2012

• March 2nd: Significant Tornado Outbreak (ArcGIS Online StoryMap)

2011

• April 27th: Historic Super Outbreak (ArcGIS Online StoryMap)

1995

• May 18th: East Tennessee Major Tornado Outbreak (scientific research paper)

1974

• April 3-4: Remembering the April 3-4, 1974 Super Outbreak (ArcGIS Online StoryMap)

Flooding

The following summaries cover "significant" or widespread flooding. River and flash flooding can be found in these summaries. If the flooding event accompanied severe thunderstorms or tornado outbreaks, it will likely be included in that event's summary under the "Thunderstorms / Tornadoes" section.

2024

• September 25th - 28th: Record-Breaking Rainfall and Historic Flooding from Hurricane Helene

2021

• August 30th-September 1st: Hurricane Ida Heavy Rainfall and Flooding
• August 17th-18th: Tropical Storm Fred Heavy Rainfall and Flooding

2006

• September 23rd: Knoxville and Vicinity Flash Flooding

2003

• February 13th: East Tennessee and Southwest Virginia Flash Flooding

• May 3rd: Record Flooding 

2001

• August 3rd-4th: Horse Creek/Greene County Flooding

1997

• July 1st: Buffalo Springs/Tampico, Tennessee Fatal Flash Flood

1989

• September 22nd: Pittman Center, Tennessee Flash Flood

Winter Storms

2024

• January 14-17: Heavy Snow, Extreme Cold, and Record Long Snow Depth

2022

• March 12th: Significant Snowfall

Historic

• Link: Top 10 Snowfalls in the Morristown WFO (1940 to Present)
• Link: Blizzard of 1993

Extreme Heat & Cold

The following summaries cover "significant" or widespread high heat or extreme cold. Dangerous wind chills and life threatening heat indices can be found in these summaries. If the extreme temperatures were associated with a summer or winter storm, it may be found under the "Thunderstorms & Tornadoes" or "Winter" sections. These events tend to more "rare" compared to others and do not occur on a yearly basis.

2022

• December 23rd - 24th: Record Cold and Wind Chills

1985

• January 21st: Record Cold Across the South

High Wind Events

The following summaries cover events that don't fall under the other categories - such as high wind events (not associated with thunderstorms). Other atmospheric events, such as auroras, may be found here.

2022

• March 30-31: High Winds and Wildfires