Saharan dust, part of which originated from western Niger, crossed the Sahara northwestward and was taken up by a frontal system (faint greyish veil over water) off the Iberian pensinsula.
Latest case studies
Dust outbreak in California's Central Valley
A deep upper-level trough caused a dust outbreak in California's Central Valley on 11 Oct 2021.
Line of thunderstorms over the southern Plains
On 10-11 October 2021 convective storms developed over the southern Plains.
Record-breaking rainfall in northern Italy
Northwestern Italy had a record-breaking year's worth of rain in 24 hours on 4 October 2021.
Cumbre Vieja volcano eruption
The Cumbre Vieja volcano on the Canary Island of La Palma erupted on 19 September 2021.
Melting Greenland ice sheet cools North Atlantic Ocean
Observing the cooling of the North Atlantic Ocean during the last decade, using weather satellites.