Portugal's Sea and Atmosphere Institute forecasts weekend temperatures above seasonal norms, with rain and thunderstorms, as a tropical air mass carries Saharan dust from North Africa over the Iberian Peninsula.

Portugal's Sea and Atmosphere Institute forecasts weekend temperatures above seasonal norms, with rain and thunderstorms, as a tropical air mass carries Saharan dust from North…

The Portuguese Institute for Sea and Atmosphere forecasts above-average weekend temperatures for the time of year, with rain and thunderstorms, as a tropical air mass carrying…