*Weekly outlook* A change in the sub-polar circulation is coming, as the tropospheric polar vortex tries to re-organize. Cold air and snow likely over Europe and the USA!
-spread the word- While the stratospheric polar vortex is getting ready for the strong temperature and pressure dynamics in the coming week, its tropospheric counterpart is trying to organize....
*Polar watch* An ozone hole (mini) has formed over the North pole and Scandinavia! Ozone levels have dropped to over 50 Dobson units below normal.
-spread the word- The ozone hole that we usually talk about, can be found over the South pole. There, ozone is being destroyed in a man-powered chemical process every...
*MAJOR snowfall event* with dangerous avalanche threat will develop over the NW Italian Alps this weekend – locally more than 150 cm of fresh snow is likely
-spread the word- Related to the extreme rainfall event across the SE France and western Alps this weekend, intense snowfall will be ongoing over the higher mountains across NW...
*Stratosphere warming watch UPDATE 20/Nov* A powerful warming phase now to begin in 10 days! Temperature in the stratosphere over Siberia will rise for 40°C in a few days!
-spread the word- A strong new warming phase is getting closer, and is set to begin in 10 days! The final power and the later effects are still under...
The eastern Mediterranean sea remains very warm while the western parts are much colder than normal for late November
-spread the word- Warm sea surface temperatures are usually the main source / fuel for the storm systems which could potentially bring excessive rainfall events, intense cyclones or even...
*Winter 2019/2020* FINAL November model forecast for the upcoming winter! Summary: Polar vortex collapse might be the make or break factor for many this winter!
-spread the word- November model calculations are done, and they are usually regarded as the final forecast for winter. December is already a winter month, so November forecasts will...
*Stratosphere warming watch UPDATE 18/Nov* A powerful new warming phase is coming in early December! Calculations now start showing a Sudden Stratospheric Warming event! 3D animation added!
-spread the word- New model calculations are done, and they still show the powerful new warming phase coming in early December. Each new model calculation increases the likelihood of...
*Stratosphere warming watch* A powerful new warming phase is building for early December. Stratospheric temperatures likely to raise over 30°C above normal, affecting the already weakened vortex!
-spread the word- The polar vortex is slowly but steadily losing its power. While the pressure waves are “attacking” the polar vortex, a new temperature wave is building for...