This page documents confirmed tornadoes from August to September 2020 via various weather forecast offices of the National Weather Service. Based on the 1991–2010 averaging period, 83 tornadoes occur across the United States throughout August, while 74 occur in September.
A significant number of tornadoes in both months came from the tropics. August had 180 tornadoes, which was the most on record, with 55 of them coming as a result of Hurricanes Isaias and Laura. In contrast, September saw only 38 tornadoes, which was well below average, with 23 of them coming from Hurricane Sally and Tropical Storm Beta.
United States yearly total
August
August 1 event + List of confirmed tornadoes – Saturday, August 1, 2020EF#LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax width EF0PetronilaNuecesTX21:42–21:43A video confirming a brief landspout tornado was posted on social media. No damage was found. EF0NE of HaymakertownBotetourtVA22:25–22:31Damage was limited to uprooted trees and a few small trees that were snapped along a discontinuous path.
August 2 event + List of confirmed tornadoes – Sunday, August 2, 2020EF#LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax width EF0SW of SharonLitchfieldCT21:36–21:37At a nursery along the New York/Connecticut state line, greenhouses were destroyed, and large trees were uprooted. There were reports of garden supplies rotating in the air above the nursery. Additional trees were uprooted away from the nursery. EF1S of Falls VillageLitchfieldCT22:05–22:06Many trees were snapped or uprooted. EF0N of NorfolkLitchfieldCT22:36–22:37A tornado was confirmed via photos, along with multiple eyewitness accounts. EF0ESE of Sandisfield to SW of BlandfordBerkshire, HampdenMA22:58–23:20A home had a window blown in, shingles ripped off, and its portico was lifted upward. Many trees were damaged or blown down. Some corn stalks were flattened, and a fence was blown down.
August 3 event
August 4 event Tornadoes were associated with Hurricane Isaias excluding the events in the Dakotas and Colorado.