1863 Riverside, Bloxburg Valley Tornado

On July 29, 1863, a weak and minor very high-end EF1 tornado left a path of destruction across an unknown length track in Riverside, particularly along a path from the border of the Riverside district and eventually lifting near the border of the Riverside district. The tornado was noted for being isolated. The tornado caused EF0-EF1 damage along most of its path, especially in an estate, where it was destroyed. The tornado killed a total of six Robloxians and promoted Tornado Warnings in Riverside.

Robloxians were on the roads, attempting to outrun the tornado in their vehicles. The tornado was most notable for the damage it produced in an estate, where much of the estate's commercial center was destroyed by the tornado, including a well-built small barn which the entire structure was overturned and slid and a single-family residence which had a porch failure. Four Robloxians were killed in the estate. It was even noted by storm surveyors that a single wide manufactured home was rolling and vaulting, while a double wide manufactured home lost its roof structure. An apartment lost 20% of its roof covering, and a canopy collapsed in a motel.

A vehicle was thrown nearly a mile from the tornado, landing just east of the estate, originally being parked at one of the estate's masonry apartments. No warping was reported. However, the masonry apartment's concrete roof decking was uplifted. The Robloxia Weather Service noted that the tornado may have peaked as an EF2 tornado (specifically, 122±1 mph) during this point in the tornado's lifespan (which would have necessitated a PDS Tornado Warning). However, the Robloxia Weather Service went with a "potentially conservative" rating of 110 mph very high-end EF1 (and never issued a PDS Tornado Warning). It was also noted that the engine of a vehicle was found over three miles away from the frame of the vehicle, with the engine being violently torn from the vehicle's frame by the tornado and carried. A deputy of the City of Bloxburg Police Department's later described the damage as if a "nuclear bomb was detonated over the district", predicting the invention of nuclear weapons precisely 82 years later. However, some Robloxians believed the quote was dubious as this never actually was said by the deputy, where some Robloxians believed the quote actually said was: "A time bomb was detonated over the district.". Although damage was less severe in areas outside of the estate, two deaths were still recorded in areas outside of the estate.