| August 2007 | Tornado (EF4) | Northwood | 1 killed, 18 hurt, $50,000,000 | The tornado touched down about 2 miles west-southwest of Northwood. The tornado crossed the Goose River about a mile west-southwest of the Northwood airport and left a 200 yard wide stretch of downed trees in its wake. By the time it hit the airport, the ground track was one-third of a mile wide and growing wider. At this point the tornado was still visible outside the increasingly heavy rain. ||The tornado reached an incredible width of eight-tenths of a mile as it pushed through Northwood to the east-northeast. At this point it had multiple vortices embedded in the overall wedge shaped tornado. The strongest of these vortices appears to have scoured the ground and left broad circulation patterns of debris in the overall damage and debris field. Around this time the tornado likely became wrapped in heavy rain and would have been difficult to observe from a distance. The most extreme damage appeared to be in the northeast corner of the community.||Northwood, in southwest Grand Forks County, had a population of about 1000 people. 90 percent of the roughly 460 homes were damaged. One death occurred in a mobile home, with 18 other injuries reported. The death occurred in a trailer park on the north edge of town, where 19 total units were demolished.||Just to the east of the trailer park, in the area that sustained the extreme damage, three businesses were hit particularly hard. An agricultural company, the towns largest employer, had its buildings heavily damaged. A nearby construction company lost two large steel buildings and other equipment. Steel beams from the two steel buildings were twisted and tossed nearby. Finally, a car dealership lost 15 to 20 vehicles from its parking lot along highway 15. Many of these vehicles were damaged beyond recognition and tossed into nearby fields. One corn field to the north of highway 15 (across from the 3 businesses on the northeast side of town) had it stalks snapped off several inches from the root bases, with pieces of husked corn laying around.||Hangers and airplanes were also damaged at the airport. The local health center, school, supermarket, and grain elevator were damaged. Near the elevator, several rail cars were knocked off the tracks. Hundreds of trees were snapped, uprooted, or damaged. Power was also knocked out to many customers, but eventually was turned off (for safety reasons) to the entire town. A total of about 2600 truckloads of debris were hauled to the town landfill. In the days following the tornado, a Presidential Disaster Declaration was granted. |
| June 1994 | Thunderstorm Wind | Northwood | $50,000 | Strong winds uprooted several trees, destroyed a camper, and blew over a 45 foot truck trailer. |
| August 2001 | Thunderstorm Wind | Northwood | $15,000 | Half the roof of a quonset was torn off along with its doors. Shingles were torn off the home and trees were blown down. |
| June 1996 | Hail | Northwood | $10,000 | no account filed |
| July 2003 | Lightning | Northwood | $5,000 | Lightning struck a telephone pole and knocked the transformer to the ground. Cable and telephone service were knocked out in town. |
| August 2001 | Thunderstorm Wind | Northwood | $3,000 | 50 trees were blown down. |
| August 1994 | Thunderstorm Wind | Northwood | $3,000 | no account filed |
| June 2025 | Thunderstorm Wind | Northwood | - | Observed tree branches down. |
| August 2025 | Tornado (EF0) | Northwood | - | The track of this tornado is seen on high resolution satellite imagery, with mainly crop damage as it tracked northeast and eventually caused large tree branches to be snapped in a shelterbelt before lifting. TDS observed on radar. |
| July 2022 | Thunderstorm Wind | Northwood | - | Several trees were blown down around Northwood and Northwood Township. Report and photos were posted via social media, with time estimated via radar. |
| July 2022 | Tornado (EF1) | Northwood | - | The tornado tossed sections of irrigation pipes which were stacked near Highway 18, tore an empty steel grain bin from its foundation, and scattered pieces of the bin over a half mile. |
| July 2022 | Thunderstorm Wind | Northwood | - | Peak wind was measured at an NDAWN station at the 3 meter height. |
| June 2020 | Thunderstorm Wind | Northwood | - | The wind gust was measured by a NDAWN mesonet sensor. |
| June 2020 | Thunderstorm Wind | Northwood | - | A small tree was snapped. |
| June 2018 | Thunderstorm Wind | Northwood | - | A bowing section of a squall line cut across east central Avon Township. Numerous large trees were snapped along its path. |
| July 2017 | Hail | Northwood | - | The hail was accompanied by heavy rain. |
| June 2016 | Thunderstorm Wind | Northwood | - | Strong winds moved through Northwood. |
| July 2016 | Hail | Northwood | - | Widespread foliage damage was reported. |
| July 2011 | Thunderstorm Wind | Northwood | - | Trees were blown down in Northwood. |
| June 2008 | Thunderstorm Wind | Northwood | - | The wind knocked down several large four to six inch diameter tree branches. |
| August 2007 | Funnel Cloud | Northwood | - | The funnel was observed 4 miles north of Hatton on highway 18. |
| October 2007 | Thunderstorm Wind | Northwood | - | Several large tree limbs were snapped off and blown across a county road. Ripe crops were flattened nearby. The strong winds blew for about 4 to 5 minutes. |
| October 2007 | Hail | Northwood | - | Penny to quarter sized hail fell, along with heavy rains and winds to 50 mph. |
| May 2006 | Thunderstorm Wind | Northwood | - | Strong wind gusts blew a tree onto a house. Many branches were also knocked down throughout town and tin was blown from roofs. |
| June 2005 | Thunderstorm Wind | Northwood | - | Numerous trees were blown down. |
| May 2004 | Tornado (F0) | Northwood | - | The tornado was near the Grand Forks-Nelson county line. |
| May 2004 | Tornado (F0) | Northwood | - | A brief touchdown was reported. |
| July 2004 | Thunderstorm Wind | Northwood | - | Trees fell on power lines. |
| July 2003 | Thunderstorm Wind | Northwood | - | Three trees were blown down and one window was broken by the strong wind. |
| July 2016 | Hail | Northwood | - | no account filed |
| July 2016 | Hail | Northwood | - | no account filed |
| July 2015 | Hail | Northwood | - | no account filed |
| June 2015 | Hail | Northwood | - | no account filed |
| July 2013 | Hail | Northwood | - | no account filed |
| August 2007 | Funnel Cloud | Northwood | - | no account filed |
| September 2005 | Hail | Northwood | - | no account filed |
| May 2004 | Hail | Northwood | - | no account filed |
| May 2004 | Hail | Northwood | - | no account filed |
| May 2004 | Hail | Northwood | - | no account filed |
| May 2004 | Hail | Northwood | - | no account filed |
| May 2004 | Hail | Northwood | - | no account filed |
| June 2004 | Hail | Northwood | - | no account filed |
| July 2004 | Hail | Northwood | - | no account filed |
| July 2003 | Hail | Northwood | - | no account filed |
| June 2002 | Hail | Northwood | - | no account filed |
| June 2002 | Hail | Northwood | - | no account filed |
| June 2001 | Hail | Northwood | - | no account filed |
| May 2000 | Hail | Northwood | - | no account filed |
| August 2000 | Hail | Northwood | - | no account filed |
| August 2000 | Hail | Northwood | - | no account filed |
| June 1997 | Hail | Northwood | - | no account filed |
| June 1997 | Hail | Northwood | - | no account filed |
| June 1996 | Hail | Northwood | - | no account filed |