Cutoff low over northern Alaska
![](https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2020/06/ak_wv-20200612_210032.png)
GOES-17 (GOES-West) Mid-level Water Vapor (6.9 µm) images (above) showed the circulation of an anomalous middle-tropospheric cutoff low over the northwestern portion of Alaska on 12 June 2020. A Potential Vorticity (PV) anomaly associated with this low was causing the dynamic tropopause — represented by the pressure of the PV1.5 surface —... Read More