Last updated on: May 18, 2019
Atlantic Temperature Differentials:
Gulf Stream Flow
Polar Ice Melt Status:
Arctic Air Temperatures:
Antarctic and Greenland Melt:

Violent Weather Probability:
North America:
High
South America:
Moderate
Europe:
High
Australia:
High

Extremes of weather and unusual weather throughout the Northern Hemisphere have led to a wet and violent spring across the central and southeastern United States and the southern part of Canada. Two land-based cyclonic storms have developed in the central US. Britain and northern Europe have experienced unusually wet and cold weather for late spring, while at the same time excessively hot ocean waters off the east coast of Africa have spawned two hurricanes, both among the most powerful ever recorded in the region.

Until the jet stream, which is looping down from the arctic all the way into central Texas, effects its summer retreat, conditions in the midcontinent will remain unstable and unpredictable. The divergence of the jet stream is due to record high air temperatures in the high arctic. The persistence of wintry conditions in the mid latitudes mean that the coming hurricane season could generate some dangerous storms, as tropical waters remain unseasonably warm.

READING THE CLIMATE WATCH INDEX: The index checks ice, sea water warmth and current flow, and weather conditions at key points in the arctic. In general, abnormally high arctic temperatures and low Gulf Stream flow in the winter will mean that the jet stream will be looping far north and south, causing violent weather in the middle latitudes. Extreme summer heat in the arctic will result in more heat further south, and a radical temperature differential between north and south will bring heavy weather across continental areas of Europe and North America. But weather and climate are very complex, and these are never more than probabilities. Movement of the jet stream into the high arctic due to abnormally warm North Atlantic water temperatures during the September–April period indicates probable violent weather in Europe and eastern North America. Overall, the superstorm index remains unchanged, as recent scientific studies have served as confirming evidence..