Heat — Upper Green River Basin, Wyoming

2020-09-05 · Upper Green River Basin, Wyoming

Event narrative

An all time September record high temperature of 91 degrees was set at Big Piney, Wyoming. This broke the old record of 87 degrees.

Wider weather episode

A abnormally strong ridge and dry soil brought record heat to western and central Wyoming. Many areas saw record high temperatures, with a few stations reaching 100 degrees. All time monthly high temperatures were set or tied at Big Piney, Casper, Lander, Riverton, Rock Springs and Worland.

Source: NOAA Storm Events Database, event_id 915951. Narrative written by the NWS forecast office that issued the report.