Heat — Lower Chehalis Valley Area, Washington

2023-05-12 to 2023-05-16 · Lower Chehalis Valley Area, Washington

Event narrative

Observations around the Lower Chehalis Valley recorded well above normal temperatures for the month of May, with highs ranging from the upper 80s to low to mid 90s.

Wider weather episode

A strong ridge of high pressure brought well above normal temperatures to Western Washington, with a period of high temperatures in the upper 80s to low 90s. Many locations broke temperature records during this period. Eventually, onshore flow aided in the recovery back towards near normal temperatures to round out the latter half of the month.

Source: NOAA Storm Events Database, event_id 1103545. Narrative written by the NWS forecast office that issued the report.