Thunderstorm Wind — Lewis and Clark, Montana

2022-09-07 · near (hln)helena Rgnl Arp, Lewis and Clark, Montana

53 MG

Magnitude

Event narrative

ASOS station KHLN Helena Airport reported 53 knot wind gust.

Wider weather episode

Strong upper-level ridging persisted and was the dominated weather feature for several days. Record breaking high temperatures, near single digit RH, and strong winds gusts have led to a Red Flag Warning throughout the 4 days. Numerous fires sparked as a result of incapsulated erratic gusty winds associated with isolated dry thunderstorms. The breakdown of the upper-level ridge, onset of strong winds aloft, and the isolated dry thunderstorms was the trifecta that led to an extreme critical fire weather event.

View location on OpenStreetMap → (46.6000, -111.9800)

Source: NOAA Storm Events Database, event_id 1051230. Narrative written by the NWS forecast office that issued the report.