The Portuguese Institute of the Sea and Atmosphere (IPMA) issued an orange warning for Thursday for the northern and central districts of Portugal due to maritime unrest.
For Wednesday, the IPMA had already planned orange warnings for all of mainland Portugal, with the exception of the district of Bragança, due to heavy rain.
Warnings for strong sea agitation target the districts of Porto, Setúbal, Viana do Castelo, Lisbon, Leiria, Aveiro, Coimbra and Braga and will be in force between dawn and Thursday morning, when west/northwest waves with a significant height of five to six meters are expected, reaching a maximum height of nine meters.
In a previous statement, IPMA had already placed the districts of Porto, Faro, Setúbal, Viana do Castelo, Lisbon, Leiria, Beja, Aveiro, Coimbra and Braga under yellow warning from 9pm today due to sea unrest, with four to five meter west/southwest waves expected.
The IPMA also issued an orange warning for all districts of mainland Portugal, except Bragança, in the early hours and morning of Wednesday, then turning to yellow until the early hours of Thursday due to the rain, which can sometimes be heavy.
The 17 districts will also be under yellow warning due to forecast conditions favorable to the occurrence of thunderstorms and extreme wind phenomena in the early hours and morning of Wednesday.
The Bragança district will be under yellow warning due to sometimes heavy rain between 06:00 and 15:00 on Wednesday
The IPMA also issued a yellow warning between tonight and Wednesday morning for the districts of Bragança, Viseu, Porto, Guarda, Vila Real, Viana do Castelo, Lisbon, Leiria, Castelo Branco, Aveiro, Coimbra and Braga due to the forecast of strong winds from the southern quadrant, with gusts of around 80 kilometers per hour (km/h) on the coast, and around 100 km/h in the highlands.
The orange warning is issued by IPMA whenever there is a “moderate to high risk meteorological situation”, and yellow, when there is a risk situation for certain activities dependent on the meteorological situation.