Phasing of the subtropical and polar jet streams take place over the Northeast U.S. to spawn an impressive 975 MB “bomb cyclone” east of Nantucket and a change from a large veil of rain to all snow as the storm progresses through Pennsylvania and New Jersey to New England on Tuesday.

The Europe Drought Monitor identifies a strong Northwest Africa drought having a northeastward extension to East Spain and Italy. There is some short-term rain in Morocco, otherwise the dry and very warm pattern is likely to regenerate.

There is good news in the forecast for Argentina. A stalled Madden Julian oscillation (MJO) in the central tropical Pacific Ocean has an influence on South America climate that increases vertical motion (convective clouds/thunderstorms).

Late summer 2023-24 drought in South America is worsening. Most recently, Argentina has received very little rain while anomalous heat has accelerated drying of soils. This effect has also affected Southern and Northwestern Brazil.