Ianos organised over the warm Ionian Sea and reached western Greece with strong winds and heavy rain. Moisture and rainfall then shifted towards central parts of the country.
Event timeline
- 16–17 Sep — The low organises over the Ionian Sea and develops a more symmetric cloud structure.
- 18 Sep — The system affects western coasts with wind, waves and heavy rainfall.
- 19–20 Sep — Rain shifts towards central and eastern Greece while the system weakens.
What happened in the atmosphere
Medicanes are uncommon Mediterranean cyclones that can develop a warm core and organised circulation. A warm sea supplies moisture and energy, while upper-air conditions strongly influence their evolution.
The precise track matters: a small displacement changes which coast receives the strongest winds, highest waves and persistent rain bands.
What helps us interpret the event
- Follow track, pressure, gusts and waves together.
- Use ensemble forecasts because the exact path is uncertain.
- Heavy local rainfall can persist well away from the centre.
Historical analysis must not be used as guidance for a new event. During active severe weather, follow HNMS, Civil Protection, 112 and local authorities.