This image shows the sea surface temperature recorded yeasterday in Catalonia. The information is updated daily.
In general, Marine Heat Waves (MHW) are defined as events with a minimum duration of 5 days where the water temperature is exceptionally high. Marine Heat Waves can be described according to their duration, intensity, trend, or spatial extension.
This graph shows the annual trend of the sea surface temperature in the Mediterranean Sea in 2003 (green), an outstanding year due to a great heat wave affecting the entire Mediterranean basin. Heat waves have also affected our area during the last years (purple). We can compare the daily average temperature to the historical records between 1982 and 2019 (black). Sea temperature is considered to be exceptionally high when it is higher than 90% of the records (gray bands).