Starting today, a significant shift in weather is expected for two days. Meteorologists are warning about a “Pi-type” storm, prompting the Hellenic National Meteorological Service (EMY) to issue an Emergency Severe Weather Bulletin, which was updated overnight.

⚠️ΝΥΧΤΕΡΙΝΗ ΕΠΙΚΑΙΡΟΠΟΙΗΣΗ ΕΜΥ
✅Διατηρούνται τα κύρια χαρακτηριστικά της κακοκαιρίας και στα νέα τρεξίματα των μοντέλων, με πρόσκαιρα μεγάλες ραγδαιότητες βροχής και ανατολική κίνηση.
📌 : https://t.co/03OfMYyEGG
@EMY_HNMS @CivPro_GR @Starchannelnew1 pic.twitter.com/rUsR7kdGWY

— Theodoros Kolydas (@KolydasT) October 1, 2025

Meteorologist Thodoris Kolydas noted:

“The key characteristics of the storm remain in the latest model runs: brief but intense rainfall and eastward movement.”

EMY Forecast for Thursday (October 2, 2025) and Friday (October 3, 2025)Key Features:

• Heavy rain, thunderstorms, localized hail.
• Affects most of Greece.
• Phenomena will be especially intense in several regions.

Thursday, October 2:

• Until early afternoon: Ionian Islands.
• Early morning to afternoon: Epirus, Western Macedonia, Western Central Greece, Western & Southern Peloponnese.
• Late morning onward: Central Macedonia, Thessaly (until evening), Central and Eastern Central Greece (including Attica), remaining Peloponnese, Western Crete, Euboea, Sporades.
• Evening onward: Eastern Aegean Islands, Eastern Macedonia.
• Late night: Thrace.

Friday, October 3:

• Early morning to afternoon: Dodecanese.
• Until midday: Eastern Macedonia, Thrace, Eastern Aegean Islands.
• Until morning hours: Central Macedonia.

Areas of Increased Risk:

• Thursday (early): Ionian Islands (especially Zakynthos, Kefalonia), Western/Southern Peloponnese.
• Thursday evening – Friday morning: Central Macedonia.
• Friday until midday: Eastern Macedonia, Thrace, Eastern Aegean Islands.
• Friday morning to afternoon: Dodecanese.

112 Emergency Alerts Sent:

• To Laconia residents: Warning of heavy rainfall and thunderstorms from early morning to late afternoon on Thursday, Oct. 2.
• Wednesday night: Alerts sent to Ionian Islands, Achaia, Ilia, Messinia.

Dangerous Weather Due to Warm Seas

Meteorologist Giorgos Tsatrafilias described the storm as “deceptive and dangerous” due to warm sea temperatures, which fuel the storm system.

Key points:

• Thursday: Intense rainfall and thunderstorms start early in western regions, then spread northward.
• Friday: Northern Greece, Eastern Aegean, Dodecanese.
• Severe winds in the Ionian and South Aegean.
• Temperature drop of up to 8°C, and some snowfall at elevations around 1,300m Thursday night.
• Attica (Athens region): Strong thunderstorm expected Thursday midday.

Scientific Explanation of Warm-Sea Effect on Storms:

• Warm water → More evaporation → More latent heat → Stronger storms.
• Surface heating changes pressure distribution → alters storm trajectory.

Risk Assessment Committee & Government Readiness

The Risk Assessment Committee, convened by the Civil Protection General Secretary Nikos Papaefstathiou, warned that some regions are at heightened risk of severe weather:

• Thursday: Zakynthos, Kefalonia, Achaia, Ilia, Messinia, Laconia, Central Macedonia.
• Friday: Eastern Macedonia, Thrace, Eastern Aegean, Dodecanese.

Authorities are on high operational alert, including local governments, police, and emergency services.

Civil Protection Guidelines for Citizens

The General Secretariat for Civil Protection urges citizens to take self-protection measures:

Before/During the Storm:

• Secure objects that could become projectiles.
• Ensure drains/gutters are clear.
• Avoid walking or driving across rivers, streams, or flooded roads.
• Postpone outdoor activities and stay away from coastal areas.
• Seek shelter during hailstorms — hail can injure humans and animals.
• Avoid standing under trees, signs, balconies, or anything that may fall.
• Follow official instructions (e.g. police alerts).

If Lightning Activity Is Present:

At home:

• Unplug electrical appliances.
• Avoid touching plumbing (sinks, pipes).

In a car:

• Pull over away from trees.
• Stay inside, windows closed, hazard lights on.
• Avoid driving through floodwaters.

Outdoors:

• Find shelter (not under tall trees in open areas).
• Avoid metallic objects.
• Move away from water.
• If you feel hair standing on end (lightning imminent), crouch low with feet together.

Today’s Weather (Thursday, October 2)

• Rain and storms in the Ionian and mainland, expanding to eastern Macedonia, Thrace, Northern Aegean, Cyclades, and Crete by afternoon.
• Severe in: Ionian, Western Greece, Peloponnese, Eastern Central Greece, Central/Eastern Macedonia, Northern Aegean, Crete.
• Hail possible in south mainland and Aegean.
• Snowfall in high mountains of northwest Greece by night.
• Increased dust in southern and eastern regions.

Temperature Ranges:

• Western Macedonia: 3–13°C
• Other Macedonia: 12–19°C
• Thrace: 10–22°C
• Thessaly: 10–19°C
• Epirus: 10–21°C
• Central Greece: 13–20°C
• Peloponnese: 13–23°C
• Ionian Islands: 13–21°C
• North/East Aegean: 13–24°C
• Cyclades: 13–21°C
• Dodecanese: 19–26°C
• Crete: 11–29°C

Winds:

• North Aegean: NE winds 3–6 Beaufort.
• Central/South Aegean: Initially N winds, becoming southerly 4–6 Beaufort by afternoon.
• Ionian Sea: S winds 4–6 Beaufort, later turning NW 5–7 Beaufort.

Regional Forecasts:

Attica (Athens):

• Rain & thunderstorms, potentially severe by midday.
• Winds: Initially N up to 3 Beaufort, turning S 2–4 Beaufort.
• Temp: 19–22°C

Thessaloniki:

• Rain, possibly thunderstorms.
• Winds: N 2–4 Beaufort.
• Temp: 13–16°C

Friday, October 3:

• Rain & storms continue across much of Greece.
• Especially intense early in Central Macedonia, Eastern Macedonia, Thrace, Eastern Aegean, Dodecanese.
• Some eastern/southern regions may see temporary improvements.
• Snow in northern mountain areas.
• Winds: Mostly W/NW, SE winds in eastern regions, 4–7 Beaufort.
• Temp drop:
• Macedonia: Max 15–17°C
• Rest of mainland/Ionian/North Aegean: 19–22°C
• Dodecanese, Cyclades, Crete: up to 25°C

Saturday, October 4:

• Unsettled weather with local rain in central/southern regions and eastern Aegean.
• Winds: Westerlies 3–5, locally 6 Beaufort in seas.
• Temperature: Slight increase in western/northern regions.

Sunday, October 5:

• Mostly clear skies, with brief cloudiness.
• Small chance of light rain in Crete.
• Visibility locally reduced in the morning.
• Winds: Variable 3–4 Beaufort; in Dodecanese, NW 4–6 Beaufort.
• Temperature: Slight rise across most areas.