TYRN SEA v. 1.6 BetaBloom & mucilage preconditions · Calabrian coast

The sea today and over the next 5 days

Forecast of the physical preconditions for algal blooms and mucilage along the Calabrian coast, updated several times a day from the satellite and model data of the Copernicus Marine Service.

Data: Sun 11/10/2026 · 16:01 Horizon: up to 5 days
Index levels: Low Moderate High Very high

Preconditions map — today

Each dot is a stretch of sea, split in half: the left half shows today's bloom preconditions, the right half today's mucilage ones. Click a dot for today's and tomorrow's values.

Detail by zone

Forecast trend of the two indices and daily traffic light.

Tirreno Nord

22 3
Algal bloom
Sun 11/10 25
Mon 12/10 22
Tue 13/10 11
Wed 14/10 11
Thu 15/10 12
Mucilage
Sun 11/10 3
Mon 12/10 3
Tue 13/10 2
Wed 14/10 2
Thu 15/10 2

Tirreno Sud

12 2
Algal bloom
Sun 11/10 16
Mon 12/10 12
Tue 13/10 14
Wed 14/10 10
Thu 15/10 12
Mucilage
Sun 11/10 2
Mon 12/10 2
Tue 13/10 2
Wed 14/10 1
Thu 15/10 2

Estremo Sud

16 2
Algal bloom
Sun 11/10 16
Mon 12/10 16
Tue 13/10 8
Wed 14/10 3
Thu 15/10 0
Mucilage
Sun 11/10 3
Mon 12/10 2
Tue 13/10 1
Wed 14/10 0
Thu 15/10 0

Ionio Sud

18 2
Algal bloom
Sun 11/10 21
Mon 12/10 18
Tue 13/10 2
Wed 14/10 0
Thu 15/10 0
Mucilage
Sun 11/10 3
Mon 12/10 2
Tue 13/10 0
Wed 14/10 0
Thu 15/10 0

Ionio Nord

2 0
Algal bloom
Sun 11/10 4
Mon 12/10 2
Tue 13/10 0
Wed 14/10 0
Thu 15/10 0
Mucilage
Sun 11/10 0
Mon 12/10 0
Tue 13/10 0
Wed 14/10 0
Thu 15/10 0

Focus Amantea-Lamezia

13 2
Algal bloom
Sun 11/10 11
Mon 12/10 13
Tue 13/10 5
Wed 14/10 3
Thu 15/10 5
Mucilage
Sun 11/10 2
Mon 12/10 2
Tue 13/10 1
Wed 14/10 0
Thu 15/10 1

Each number is a 0–100 index computed from the physical preconditions of a bloom: sea temperature, stratification (calm sea) and marine heatwaves. The bloom measures how favourable these conditions are; the mucilage combines the bloom with the prolonged stagnation of the sea. Details on the How it works page.

How to read the two indices

Both indices range from 0 to 100 and share the same threshold scale: the higher the value, the more favourable the forecast conditions, for both bloom and mucilage.

Index Level Meaning
0–24 Low Conditions within the seasonal norm: preconditions essentially absent for both indices.
25–49 Moderate One or two preconditions already in place, but not enough to trigger a bloom or mucilage.
50–74 High Overall favourable conditions: algal blooms possible and, if the sea stays calm for a while, mucilage too.
75–100 Very high Heat, prolonged stagnation and marine heatwave all present together: preconditions fully favourable for both bloom and mucilage.