Portugal's Institute of Meteorology (IPMA) said that a tropical air mass is bringing Saharan dust, rain, and thunderstorms to the country this weekend [1, 2].
The weather event is significant because the combination of high temperatures and airborne dust can impact air quality and visibility across the Iberian Peninsula [1, 2].
According to IPMA, the tropical air mass is transporting a plume of dust from the Sahara Desert [1, 2]. This atmospheric shift is expected to drive temperatures up to approximately 30 °C [2]. The institute said that the weather system will also generate thunderstorms and rain during the weekend of May 23-24 [1, 2].
While the dust plume is moving across the Iberian Peninsula, the specific effects vary by region [1]. The presence of these particles in the atmosphere often creates a hazy sky and can lead to reddish-colored precipitation when mixed with rain [1].
Authorities are monitoring the situation as the air mass moves. The IPMA said that the unusual heat and dust are direct results of the tropical air mass transporting particles over the region [1, 2].
“Temperatures expected to reach around 30 °C”
The arrival of Saharan dust combined with unseasonably high temperatures indicates a volatile atmospheric pattern for the region. These events often lead to decreased air quality and can exacerbate respiratory issues for sensitive populations, while the accompanying thunderstorms may create sudden shifts in visibility for travel and aviation across the Iberian Peninsula.
