Upcoming Polar Vortex 2025 Map. The cold will first reach the. For the gefsv12 forecast issued on 18 december 2024, the winds at 60 degrees north (the mean location of the polar vortex) are forecast to remain stronger than normal for at.
A weaker polar vortex usually means a weaker jet stream, which. When (and where) the 2025 polar vortex is expected to arrive, well, that remains a bit up in the air as forecasters work to firm up a timeline for when impacted regions can expect to.