From January to March 2017, various weather forecast offices of the National Weather Service confirmed at least 399 tornadoes across the United States, activity well beyond climatological norms. Based on the 1991–2010 average, the first month of the year is expected to see 35 tornadoes, with 29 occurring in February and 80 forming throughout March. In 2017, however, the count for the first three months was 135, 70, and 194, respectively. Activity began with the development of an EF1 tornado north of Jasper, Texas at 15:03 UTC on January 2. The latest storm of the period was an EF1 that touched down southeast of Powellsville, North Carolina at 22:15 UTC on March 31. The strongest tornado, an EF4, carved a path of destruction from Perryville, Missouri to southwest of Christopher, Illinois. Meanwhile, the deadliest tornado of the period was of EF3 intensity that destroyed a mobile home park south of Adel, Georgia, killing 11 people.

The first month of the year featured the second-highest tornado count on record, surpassed only by 1999. A total of 135 tornadoes were confirmed, resultant from two major outbreaks that affected the United States on January 2 and from January 21–23. The latter event was the second-largest January outbreak on record (with 81 confirmed tornadoes), second to January 21–23, 1999, and the third-largest wintertime outbreak, excelled only by the aforementioned incident and the 2008 Super Tuesday tornado outbreak. In addition, the outbreak led to 42 tornadoes in the state of Georgia, upending the previous record of 25 set during 2004's Hurricane Ivan. Twenty people were killed from January 21–23, the second-highest count during a January event to the 1969 Hazlehurst, Mississippi tornado outbreak. February, meanwhile, featured 70 tornadoes, a count well below that of the preceding month's but still over twice the long-term average. An outbreak on the final day of February into the first day of March produced 72 tornadoes and 4 fatalities. On the back of that outbreak, an event of 63 tornadoes across similar areas a week later, and continued activity in the weeks following, March observed a total of 194 tornadoes.

United States yearly total

January

January 2 event + List of confirmed tornadoes – Monday, January 2, 2017EF#LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax width EF1N of JasperJasperTX15:03–15:04Multiple trees were downed on a golf course and surrounding properties. Total economic losses reached $30,000. EF1ESE of CallNewtonTX15:44–15:45Multiple pine trees were snapped, blocking roadways. Total economic losses reached $30,000. EF1NE of FieldsBeauregardLA16:06–16:07A portion of a metal roof was pulled off a church. Several trees were snapped. Total economic losses reached $25,000. EF1N of OrettaBeauregardLA16:17–16:18Several trees were snapped or downed; fallen trees damaged homes. A barn or garage had part of its metal roof ripped off. Total economic losses reached $50,000. EF1SSW of LongvilleBeauregardLA16:30–16:32Pine trees were snapped, and a barn had a portion of its metal roof ripped off. Total economic losses reached $20,000. EF1S of RagleyBeauregardLA16:30–16:34Several garages and outbuildings were damaged or destroyed, utility poles and trees were downed, and 10–25 homes sustained damage mainly to their roofs. Total economic losses reached $150,000. EF1ESE of BoyceRapidesLA17:06–17:07A single-wide mobile home had part of its roof removed, a carport was tipped over, and several trees were snapped. Two additional houses sustained damage from flying debris. Total economic losses reached $50,000. EF0WSW of MamouEvangelineLA17:30–17:31Three homes had metal roofing partially removed. Total economic losses reached $75,000. EF1WNW of CheneyvilleRapidesLA17:31–17:33Several homes and large barns were damaged, with debris tossed into adjacent fields. Total economic losses reached $250,000. EF1BunkieAvoyellesLA17:44–17:45Widespread tree damage was observed in town; two homes were destroyed by fallen trees. Approximately 70 additional buildings were damaged or destroyed. Total economic losses reached $1,000,000. EF1HessmerAvoyellesLA17:47–17:49Numerous trees were snapped or uprooted, numerous power lines and power poles were downed, a moving truck was tipped on its side, and at least 30 buildings were damaged or destroyed in or around Hessmer. Total economic losses reached $1,000,000. EF1SSE of MarksvilleAvoyellesLA17:51–17:52One hangar and two planes were damaged at an airport. A Wal-Mart had some of its skylights and part of its roof damaged. Neighboring strip smalls sustained facade damage, a portable fireworks shop was destroyed, and several large trees fell on buildings and homes. Total economic losses reached $2,500,000. EF0ESE of FayetteJeffersonMS19:02–19:05A few dozen trees were snapped or uprooted; limbs were broken. Total economic losses reached $50,000. EF1PeytonClaiborneMS19:14–19:20Many trees were snapped or uprooted, power lines were downed, and a few sheds sustained damage. Total economic losses reached $40,000. EF1W of WessonLincoln, CopiahMS19:21–19:28A church was pushed off its foundation, causing moderate wall damage. Several sheds were damaged, several houses sustained roof damage, and heavy tree damage was observed. A mobile home had its roof blown off. Total economic losses reached $425,000. EF1ENE of KentwoodTangipahoaLA19:45–19:46Several large pine trees were snapped or uprooted. EF1ESE of MagnoliaPikeMS19:55–20:00Large trees were snapped or uprooted; several houses and mobile homes were damaged by fallen trees. EF1W of TylertownWalthallMS20:00–20:02Some large trees were snapped or uprooted; power lines were damaged by fallen trees. EF1WNW of Pinola to ESE of MendenhallSimpsonMS20:02–20:12Many trees were snapped or uprooted. Several houses sustained roof damage or damage as a result of fallen trees. Four large sheds were heavily damaged, four houses on a chicken farm sustained moderate roof damage, and two additional structures sustained roof damage. Total economic losses reached $200,000. EF2E of Mount OliveCovingtonMS20:21–20:26A few large chicken houses were heavily damaged or destroyed; a few additional structures sustained lesser damage. Trees were damaged. Total economic losses reached $100,000. EF1StringerSmith, JasperMS20:43–20:47Many large trees were snapped or downed in and to the west of Stringer. Some homes sustained minor roof damage as well. Total economic losses reached $110,000. EF0S of BushSt. TammanyLA20:44Several small trees were snapped or toppled. EF1SE of PurvisLamar, ForrestMS20:52–20:59Trees sustained minor to moderate damage, and a few structures sustained modest damage. Total economic losses reached $30,000. EF0N of EnterpriseLauderdaleMS21:28–21:29A handful of trees were snapped or had limbs broken off. Total economic losses reached $20,000. EF1WNW of InvernessBullockAL22:24–22:32Numerous trees were snapped or uprooted, and a camper was overturned. EF1WSW of WestonStewartGA22:58–23:00Brief tornado destroyed more than half of two chicken houses, toppled an irrigation sprinkler, and snapped and uprooted several large trees. Total economic losses reached $60,000. EF2Rehobeth Geneva, HoustonAL01:35–01:44This tornado caused considerable damage in and near Rehobeth. Several large trees were snapped, uprooted, and/or debarked. The roof of a home under construction was ripped off, and other homes sustained minor damage. At a festival grounds, multiple buildings were damaged or destroyed, and utility poles were snapped. Rear flank downdraft winds from the parent supercell blew a large tree over onto a mobile home, killing four people. Total economic losses reached $550,000. EF1SE of DothanHoustonAL01:46–01:51One home had its roof ripped off while others sustained significant shingle damage. Total economic losses reached $100,000. EF2SSW of BlakelyEarlyGA02:12–02:19Two residences were significantly damaged, with a portion of the roof deck removed. Several farm buildings were destroyed. Total economic losses reached $500,000. EF1SW of DonalsonvilleSeminoleGA02:14–02:18Two mobile homes, a house, and pecan groves were all damaged. Total economic losses reached $300,000. EF2S of Blakely to NNW of DamascusEarlyGA02:18–02:33A few farm buildings and silos were destroyed. A pivot irrigation system was overturned, a mobile home sustained roof damage, and numerous trees were snapped or uprooted, including a few that were debarked. Total economic losses reached $500,000. EF2SE of ArlingtonEarlyGA02:34–02:41Significant tree damage and some structural damage was observed. A barn was destroyed. Total economic losses reached $100,000. EF1NE of ColquittMiller, BakerGA02:41–02:53Trees, homes, and outbuildings were damaged. Total economic losses reached $50,000. EF0NNW of LearyCalhounGA02:52–02:54Numerous trees were snapped or uprooted, several house roofs and outbuildings were damaged, and numerous power lines and power poles were downed. Total economic losses reached $250,000. EF1N of BacontonMitchellGA03:08–03:16Around 3,000 pecan trees were destroyed. Several mobile homes sustained roof damage. Total economic losses reached $7,600,000. EF1NW of SylvesterDougherty, WorthGA03:32–03:42A strongly convergent pattern was observed in trees. Total economic losses reached $500,000.

January 7 event + List of confirmed tornadoes – Saturday, January 7, 2017EF#LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax width EF0WSW of Live OakSuwanneeFL06:30–06:32Several properties sustained roof damage. Large trees were snapped, twisted, or downed.

January 9 event + List of confirmed tornadoes – Monday, January 9, 2017EF#LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax width EF0SW of LincolnPlacerCA22:00–22:02A tornado was photographed in a grassy field. No damage occurred.

January 11 event + List of confirmed tornadoes – Wednesday, January 11, 2017EF#LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax width EF0Southern NatomasSacramentoCA08:01–08:04Several trees were snapped or stripped of limbs, shingle damage occurred, two small awnings were twisted and downed, and several fences were damaged. Total economic losses reached $25,000.

January 13 event + List of confirmed tornadoes – Friday, January 13, 2017EF#LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax width EF0WalburgWilliamsonTX15:33–15:36Four homes sustained damage to their roofs, shingles, and associated vegetation. One business had a large section of its metal roof ripped off.

January 15 event

January 16 event

January 18 event + List of confirmed tornadoes – Wednesday, January 18, 2017EF#LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax width EF1E of BurkevilleNewtonTX19:40–19:41Several trees were snapped or uprooted. One house had its carport peeled back while another home had part of its tin roof ripped off. A deer feed and water device was tossed, decapitating a deer. Total economic losses reached $50,000.

January 19 event + List of confirmed tornadoes – Thursday, January 19, 2017EF#LocationCounty / ParishStateStart Coord.Time (UTC)Path lengthMax width EF2E of Magee to N of RaleighSimpson, SmithMS13:53–14:36Numerous trees were snapped or uprooted, numerous power poles were snapped, and numerous power lines were downed. Multiple large barns and sheds were heavily damaged or destroyed. Numerous homes sustained varying degrees of damage. One small house was destroyed, sustaining loss of its roof and exterior walls. One person was injured. Total economic losses reached $2,300,000. EF1SSW of Pell CitySt. ClairAL23:58–00:00Four boathouses were destroyed while another had its metal roof peeled back, and numerous trees were snapped or uprooted.

January 21 event

January 22 event

January 23 event

February

February 7 event

February 9 event