EFU Tornado — Sweetwater, Wyoming

2023-06-23 · near Granger, Sweetwater, Wyoming

0.1 mi

Path length

30 yds

Path width

Event narrative

Video from the public showed a narrow rope-shaped tornado northeast of Granger. The tornado touched down over open country, and caused no known damage. A rating of EFU was assigned because the brief tornado traversed land lacking damage indicators such as trees structures.

Wider weather episode

An upper level low passing over Wyoming combined with a strong jet stream to bring an outbreak of severe weather. Three tornadoes were confirmed in the WFO Riverton warning area on this day. This was the most in one day since June 12, 2017. There was one tornado in Sweetwater County and two in Natrona County. The largest and most impactful tornado was south of Midwest, WY in northern Natrona County where a home and surrounding property was damaged. Very large hail also occurred with some of the storms. The largest hail occurred in southern Johnson County and northern Natrona County where baseball size hail was reported from strongly rotating supercell thunderstorms. Other severe thunderstorms moved from Lander to Riverton and dropped quarter to golf ball size hail, causing damage to many roofs and vehicles.

View location on OpenStreetMap → (41.6721, -109.8468)

Source: NOAA Storm Events Database, event_id 1105505. Narrative written by the NWS forecast office that issued the report.