| May 2004 | Lightning | Dunwoody | 1 killed, 1 hurt | The Atlanta-Journal/Constitution reported that a 34-year old man of Douglasville, who was installing a pool at a private residence, was struck and killed by lightning while leaning against a truck outside at the site. The bolt of lightning struck the ground about 30 feet from where the individual was located at the time. Another individual with the same construction crew had his back singed during the time of this same lightning strike. |
| April 1998 | Tornado (F2) | Dunwoody | 1 killed, $25,000,000 | The damage path began just northeast of Perimeter Mall in Dunwoody and extended well into Gwinnett county. There was significant widespread damage to trees and homes. One person was killed when a tree fell on his home. DeKalb College's north campus was closed after several buildings sustained major damage. |
| September 2009 | Flood | Dunwoody | $6,100,000 | Record, and in some cases catastrophic, flooding continued to expand across the northern and western portions of the Atlanta metropolitan area as renewed rounds of showers and thunderstorms with very heavy rain tracked repeatedly over the same areas throughout the day. Portions of hundreds of roads in the county were closed from flooding and washed out bridges and/or culverts. Hundreds of homes, apartments, and businesses sustained significant flood damage. Record flooding was occurring on Peachtree Creek, the North Fork of Peachtree Creek, and Nancy Creek in northeast Atlanta. The interchange of Interstate-285 and Interstate-85 in northeast DeKalb county, known as Spaghetti Junction was completely shut down for nearly an hour early on the 21st because of flooding. Major traffic backups occurred as a result. A mud slide blocked two westbound lanes of U.S. Highway 78 at Hugh Howell Road. Other mud slides were reported within the county. These are just some of the more significant examples of flood damage in the county. Monetary damage during this time frame across DeKalb county was estimated to exceed $6 million. |
| September 2009 | Flood | Dunwoody | $3,180,000 | DeKalb county emergency management personnel and USGS stream gages confirmed that major to record flooding continued to expand into all parts of the county. Hundreds of homes, apartments, businesses, and roads sustained damages from flooding. A number of culverts and/or bridges were washed out and several roads were closed. Flood waters began to recede after 830 am EDT on the 22nd, however, many areas remained in major to record flood through 715 am EDT on the 23rd. Monetary damage from flooding continued to mount, with damage near $3.2 million during this time frame. |
| September 2009 | Flash Flood | Dunwoody | $760,000 | Several USGS stream gages showed significant flooding commencing during this time frame across DeKalb county as thunderstorms with heavy rain, which had been west of the area most of the night, began to edge east-northeast and develop across Fulton, DeKalb, and Gwinnett counties. The South Fork of Peachtree Creek at Johnson Road reached its flood stage of 12.0 feet at 128 am EDT. The North Fork of Peachtree Creek at Buford Highway reached its flood stage of 12.0 feet at 201 am EDT. Many homes, apartments, and businesses began to experience significant flooding during this time frame, especially in the vicinity of the flooded creeks. A number of roads also became flooded, impassable, and were closed. Monetary damage to roads and property during this time frame was estimated to exceed $750,000. |
| December 2024 | Tornado (EF0) | Dunwoody | $200,000 | An EF0 tornado damaged approximately 10 homes and one apartment unit where the roof was partially ripped off of a three story building. About 50 to 100 large trees and several power poles were snapped or uprooted falling on several homes two of which had significant damage. No injuries have been reported. |
| May 2010 | Flash Flood | Dunwoody | $50,000 | Several creeks across DeKalb county reached and exceeded flood stage during this period. This was verified by USGS stream gages. On the South Fork of the Peachtree Creek at Johnson Road, the flood stage of 12.0 feet was reached at 640 am EDT. The creek continued to rise and crested at 14.1 feet at 815 am EDT. The North Fork of Peachtree Creek at Buford Highway reached its flood stage of 12.0 feet at 710 am EDT, then crested at 15.1 feet at 130 pm EDT. On Snapfinger Creek in the southern part of the county, the flood stage of 12.0 feet was reached at 740 am EDT. The creek continued to rise to 12.7 feet at 915 pm EDT. The DeKalb County Emergency Management Director reported that flood waters from the upper South Fork of Peachtree Creek flooded the crawl spaces of several apartments on Lansbury Village Drive. Forty-five people had to be evacuated until the buildings were inspected and cleared of structural problems related to the flood waters. Damages from the flash floods in DeKalb county were estimated to be $50,000. |
| March 2011 | Thunderstorm Wind | Dunwoody | $15,000 | The public reported that a large pine tree was blown down across their privacy fence and also scraped the side of the house. The tree tore off two screens and broke one window on the home. Pea-sized hail was also observed at the time. |
| June 2011 | Thunderstorm Wind | Dunwoody | $10,000 | The DeKalb County 911 Center reported that more than a dozen trees were down across the county. At least one power line was down. This was from a squall line of thunderstorms that passed through the county and was not caused by the more isolated thunderstorm that earlier caused damage to a home and truck near Chamblee. |
| April 1998 | Thunderstorm Wind | Dunwoody | $10,000 | The DeKalb county EMA reported thunderstorm winds damaged houses. |
| July 2016 | Thunderstorm Wind | Dunwoody | $5,000 | The DeKalb County Emergency Manager reported several trees blown down across northern DeKalb County. A large tree was blown down at the intersection of Chamblee Dunwoody Road and Nerine Circle. |
| June 2011 | Thunderstorm Wind | Dunwoody | $5,000 | The Atlanta Journal-Constitution reported that several trees and power lines were down throughout the county. |
| June 1998 | Thunderstorm Wind | Dunwoody | $5,000 | Newspaper and public reports indicated thunderstorm winds knocked down quite a few trees. |
| June 2018 | Thunderstorm Wind | Dunwoody | $3,000 | The public reported a tree blown down onto power lines and over a road in Dunwoody. |
| July 2024 | Thunderstorm Wind | Dunwoody | $1,000 | Tree down at Vernon Ridge Court and Vernon Ridge Drive. |
| July 2024 | Thunderstorm Wind | Dunwoody | $1,000 | A tree was reported down in the 1000 block of Redfield Terrace. |
| September 1999 | Thunderstorm Wind | Dunwoody | $500 | Public reports indicated thunderstorm winds knocked several trees down in the vicinity of Peachtree-Dunwoody Road and I-285. |
| April 2011 | Hail | Dunwoody | - | An amateur radio operator relayed a report of penny-sized hail from the far northern part of the county around Dunwoody. |
| April 2005 | Hail | Dunwoody | - | Numerous reports of hail, ranging in size from pennies to quarters were received from the public. At some locations the hail fell for a period of up to five minutes. Nickel-sized hail was reported in Chamblee, Tucker, Doraville, and Dunwoody, quarter-sized hail was reported in Chamblee, and half-dollar-sized hail was reported in Doraville. |
| September 1999 | Hail | Dunwoody | - | Three public reports indicated dime to quarter size hail. |
| April 1998 | Hail | Dunwoody | - | Several public reports were received of dime to nickel size hail. |
| June 1997 | Hail | Dunwoody | - | Dime to nickel sized hail was reported. |
| September 1997 | Hail | Dunwoody | - | A Weather Channel employee reported golfball sized hail in the Dunwoody area along and on the Fulton-De Kalb Counties line. Another report from the public was of half-dollar sized hail in the same area. |
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