Frost/Freeze — Yakima Valley, Washington

2023-04-18 · Yakima Valley, Washington

Event narrative

The mesonet station KK7GO-7 Yakima reported temperatures at to below freezing between 0345 to 0636 PDT on April 18th. The mesonet station W7YKM-3 Tieton reported temperatures at to below freezing between 0420 to 0700 PDT on April 18th.

Wider weather episode

An upper low pressure system taking on a negative tilt offshore the PacNW continued to advect a cooler airmass into the region, resulting in morning low temperatures dropping to below freezing.

Source: NOAA Storm Events Database, event_id 1095139. Narrative written by the NWS forecast office that issued the report.