{| class="wikitable sortable plainrowheaders" style="width:100%;"
|+ List of confirmed tornadoes – Saturday, May 18, 1946{{efn|All dates and times are based on the local [[time zone]] where the tornado touched down.|group=note|name=Date/Time}}
! scope="col" rowspan="2" |[[Fujita scale|F#]]<br/>{{efn|All ratings on the [[Fujita scale]] were done by [[Thomas P. Grazulis]], a tornado expert, and are classified unofficial ratings since official ratings for tornadoes began in 1950.|group=note|name=Ratings}}
! scope="col" class="unsortable" |Location
! scope="col" class="unsortable" |County / Parish
! scope="col" |State
! scope="col" |Time (Local)
! scope="col" |Path length
! scope="col" |Max width
|-
! scope="col" colspan="6" class="unsortable" |Summary
|-
! scope="row" rowspan="2" style="background-color:#{{#invoke:Storm categories|color|unk}}" | FU
|[[Beloit, Iowa|Beloit]]
|[[Lyon County, Iowa|Lyon]]
|[[Iowa|IA]]
|18:30
|{{convert|2|to|3|mi|km|abbr=on|sortable=on}}
|>{{convert|0|yd|m|abbr=on|sortable=on}}
|- class="expand-child"
| colspan="6" |Several trees were uprooted, and small buildings and windmills were damaged.<ref name="May MWR"/>
|-
! scope="row" rowspan="2" style="background-color:#{{#invoke:Storm categories|color|cat4}}" | F4
|SE of [[Stoneburg, Texas|Stoneburg]] to NE of [[Bowie, Texas|Bowie]]
|[[Clay County, Texas|Clay]], [[Montague County, Texas|Montague]], [[Denton County, Texas|Denton]]
|[[Texas|TX]]
|19:00
|{{convert|30|mi|km|abbr=on|sortable=on}}
|{{convert|400|yd|m|abbr=on|sortable=on}}
|- class="expand-child"
| colspan="6" |3 deaths – In Stoneburg, a church was obliterated, with debris splintered and scattered for a mile. That said, a linen scarf was untouched that laid on the pulpit. Elsewhere along the tornado's track, an elderly man was killed and his wife injured after their house was destroyed. A "prominent elderly couple" were killed after their homes and every barn on their new ranch was leveled. The U.S. Weather Bureau considered this tornado and the following tornado the same, while [[Thomas P. Grazulis|Grazulis]] split the tornadoes up. In total, three people were killed, 15 others were injured, and the tornado caused $112,000 (1946 USD) in damage.<ref name="May MWR"/><ref name="Grazulis Book"/>
|-
! scope="row" rowspan="2" style="background-color:#{{#invoke:Storm categories|color|cat4}}" | F4
|Around [[Sanger, Texas|Sanger]]
|[[Denton County, Texas|Denton]]
|[[Texas|TX]]
|20:00
|{{convert|8|mi|km|abbr=on|sortable=on}}
|{{convert|200|yd|m|abbr=on|sortable=on}}
|- class="expand-child"
| colspan="6" | 1 death – A home on the north side of Sanger was leveled and three others were leveled east of the town. East of Sanger, a nine-year-old girl was killed by flying debris while she ran for the storm cellar. The U.S. Weather Bureau considered this tornado and the following tornado the same, while [[Thomas P. Grazulis|Grazulis]] split the tornadoes up. In total, one person was killed and five others were injured.<ref name="May MWR"/><ref name="Grazulis Book"/>
|}
|