Pacific Northwest heatwave

June 27th, 2021 |

GOES-17 Shortwave Infrared (3.9 µm) images, with hourly surface temperatures plotted in yellow [click to play animation | MP4]

GOES-17 Shortwave Infrared (3.9 µm) images, with hourly surface temperatures plotted in yellow [click to play animation | MP4]

GOES-17 (GOES-West) Shortwave Infrared (3.9 µm) images (above) included plots of hourly surface temperature during the 26 June27 June 2021 period — the first 2 days of a historic heatwave across the Pacific Northwest (caused by an anomalous 500hPa ridge over the region). Numerous high temperature records were set, including new all-time record highs for Portland OR (116 F), Seattle WA (104 F) and the entire country of Canada (121 F).

GOES-17 True Color RGB images created using Geo2Grid (below) showed that most of Washington and Oregon remained cloud-free during the daytime — and a smoke plume from the Lava Fire in far northern California was seen drifting northwestward (especially on 27 June).

GOES-17 True Color RGB mages [click to play animation | MP4]

GOES-17 True Color RGB mages, 26-27 June [click to play animation | MP4]