Tehuano wind event
A sequence of ASCAT winds (source) from overpasses of Metop-B and Metop-C at 0314, 0407, 1548 and 1607 UTC on 03 January 2022 (above) showed the early emergence of Tehuano gap winds into the Gulf of Tehuantepec, followed by their spread south-southwestward across the Pacific Ocean.GOES-16 Shortwave Infrared (3.9 µm) images (below) revealed a cooling trend within the Gulf of Tehuantepec during the 0500-2100 UTC period — with water surface 3.9 µm brightness temperatures dropping from around 24ºC (orange enhancement) to 18ºC and below (yellow enhancement) — as the strong gap wind flow induced upwelling of colder water.
![](https://cimss.ssec.wisc.edu/satellite-blog/images/2022/01/teh_swir-20220103_210032.png)
GOES-16 Shortwave Infrared (3.9 µm) images [click to play animated GIF | MP4]
![](https://cimss.ssec.wisc.edu/satellite-blog/images/2022/01/GOES-17_ABI_RadF_true_color_2022003_155032Z.png)
GOES-17 True Color RGB images [click to play animated GIF | MP4]