Upper level cyclones merging process

It is quite typical for summer circulation over central Europe that there is fading of baroclinic westerly current of weather systems from the Atlantic ocean. Instead of it we experience isolated upper level cyclones. The animation below shows merging process of these features resulting into one large vortex with approximately 3000 km in diameter. One […]

Hurricane Irma

Hurricane Harvey will likely be the most expensive natural disaster in US history, but there is another threat on the way. Tropical cyclone named Irma is moving from west coast of Africa toward North America and is still strengthening. Up to Tuesday Sept 5th it has reached maximum intensity of category 5 with sustained winds […]