Greece hit by severe storms, temperature drop of up to 8°C
Emergency weather bulletin warns of intense thunderstorms and heavy rainfall across Thessaly, Halkidiki, and Evia through Wednesday morning.

KEY POINTS
- EMY issued orange warning valid until early Wednesday 23 Sept
- Core impact zones: Magnesia, Sporades, Halkidiki, N/C Evia
- Rainfall 30-60 mm, locally higher; hail and frequent lightning likely
- Temperatures to drop up to 8°C; highs ≤25°C, mountain lows single-digit
- Attica sees lighter rain from midday; Cyclades largely spared
Greece's National Meteorological Service (EMY) has issued an orange warning for severe thunderstorms, heavy rain, and frequent lightning effective from early Tuesday until Wednesday morning. The worst conditions are expected in the Northwest Aegean, specifically Magnesia, the Sporades, Halkidiki, and northern and central Evia, where rainfall could reach 30-60 mm, locally up to 60 tons per acre.
Meteorologist Giorgos Tsatrafyllias attributes the deterioration to a cold front causing temperatures to plummet by up to 8 degrees Celsius. Highs will not exceed 25°C, while mountainous areas will see single-digit lows by Wednesday evening. The cold front forces warm, moist air upward, creating instability favorable for hail.
“Cold front brings strong thunderstorms and up to 60 tons of water per acre”
Attica will be affected to a lesser degree, with rain developing mainly from midday through the afternoon. The Cyclades are excluded from the orange warning; only increased cloud cover and isolated brief showers are forecast there. Winds blow from the north at 4-6 Beaufort, gradually weakening in the Aegean by evening.
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