Cold/Wind Chill — North Big Horn Basin, Wyoming

2019-10-28 to 2019-10-31 · North Big Horn Basin, Wyoming

Event narrative

Record cold temperatures occurred at the Greybull airport three nights in a row. The coldest temperature occurred on October 30th with a temperature of three degrees occurring. This record low temperature broke set an all time low for the month, which was nine degrees set in 2006.

Wider weather episode

An arctic front dropped southward across Wyoming and brought in an unusually cold air mass. The result was many records were broken. The locations that saw monthly record low temperatures broken included Casper, Riverton and Lander, Wyoming. The coldest temperatures occurred in the morning of October 30th. The most impressive was at Big Piney, Wyoming, where a combination of a clear sky, fresh snow cover and light winds resulted in a low of minus 26, which broke the record by 29 degrees. Note: All low temperatures in events occurred in the morning of October 30th.

Source: NOAA Storm Events Database, event_id 860202. Narrative written by the NWS forecast office that issued the report.