Summary:
Thunderstorms and rain predicted for Thursday and Friday in Portugal.
IPMA warns of atmospheric instability linked to recent wildfires.
Yellow warning issued for Aveiro, Braga, Porto, and Viana do Castelo.
Heavy rainfall expected, especially in Northern and Central regions.
Air quality compromised due to ash from ongoing wildfires.
Weather Warning Ahead
The Portuguese Institute of Sea and Atmosphere (IPMA) has issued a warning for potential thunderstorms and rain this Thursday and Friday. A low-pressure system located to the west of the mainland is expected to bring scattered showers and thunderstorms, particularly in the country's interior.
Atmospheric Instability
According to the IPMA, an atmospheric instability is anticipated, which may be exacerbated by ongoing wildfires affecting the region. The combination of these elements could lead to the formation of pyrocumulus clouds, potentially altering local wind patterns.
Risks from Recent Fires
The recent wildfires have left some areas vulnerable, increasing the risk of landslides and runoff due to the loss of vegetation cover. As we move into Friday, heavy rainfall is expected, particularly in the Northern and Central regions, including Minho and Douro Litoral, with Aveiro, Braga, Porto, and Viana do Castelo under a yellow warning. While thunderstorms may occur, they are considered unlikely.
Air Quality Concerns
Furthermore, due to the ongoing fires and prevailing wind conditions, the air quality remains compromised, primarily due to a large plume of ash affecting the atmosphere.
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