Storm “Adel” is expected to bring heavy rainfall and thunderstorms tomorrow, Thursday (27/11), and Friday (28/11) across almost the entire country. Weather phenomena in most areas of western and northern Greece, as well as the eastern Aegean, will be intense and accompanied by local hailstorms and periodically very strong winds.
According to the updated Emergency Weather Deterioration Bulletin issued yesterday, the first heavy rains and thunderstorms will occur from tonight. The meteo forecast indicates that the deterioration will mainly affect areas of the Ionian and Epirus.
Storm “Adel”: Affected regions
Specifically, the Ionian islands, Corfu, Diapontii Islands and Paxos will be affected, as well as Epirus. From the afternoon, Lefkada, Kefalonia, Ithaca, Zakynthos, Aetolia-Acarnania and western Peloponnese, while from the evening, eastern Macedonia.
Tomorrow Thursday (27/11), severe phenomena will manifest in the Ionian islands, Epirus, western and central mainland Greece, western and southern Peloponnese, as well as central and eastern Macedonia and Thrace.
On Friday, heavy rains and thunderstorms are forecast in central and eastern Macedonia, Thrace, eastern Aegean and until early morning in western Greece.
Theodoros Kolydas’ post
According to meteorologist Theodoros Kolydas, the storm will “hit” the western part of the country, however areas in Eastern Macedonia and Thrace will also be affected on Friday. As he mentions in his post, high rainfall levels will be recorded today, but not at the levels of previous days. A characteristic case is Pramanta in Ioannina which has about 80mm so far today, while last Friday the astronomical amount of 256mm was recorded.
“The Adel weather system tomorrow Thursday will be very close to Western Greece moving slowly eastward, feeding moisture and intense phenomena to vulnerable areas in a S-SW current. Apart from the west, Eastern Macedonia-Thrace will be affected – more so on Friday – where the system will move further east.
In the satellite image, the intense thunderstorm in Aetolia-Acarnania where the cloud top has exceeded the height of 11 kilometers. The strong storm cell is identified as an area where the cloud top temperature (calculated from satellite data) is lower than that of the tropopause. These are areas where the thunderstorm’s updrafts are so strong that they exceed the tropopause barrier (“overshooting tops”). The greater this difference, the stronger the storm generally is.
High rainfall levels today in the west, but not at the levels of previous days. A characteristic case is Pramanta in Ioannina which has about 80mm so far today, while last Friday the astronomical amount of 256mm was recorded!”
⚠️⚠️⚠️Η ΕΛΕΥΣΗ ΤΗΣ ADEL
✅Το κύμα κακοκαιρίας #Adel αύριο Πέμπτη θα βρίσκεται πολύ κοντά στη Δυτική Ελλάδα κινούμενο…Δημοσιεύτηκε από Theodoros Kolydas στις Τετάρτη 26 Νοεμβρίου 2025
Weather forecast until Friday (28/11)
Rains and sporadic thunderstorms are manifesting from the early hours of Wednesday 26/11 in various regions of the country, with phenomena being intense in Corfu and Epirus.
According to the forecast data from meteo.gr / EAA, during Wednesday evening 26/11 the weather will show further deterioration. Phenomena in the Ionian Islands, western mainland, Peloponnese, Eastern Macedonia and Thrace will intensify, particularly in the west where locally they will have very intense characteristics and will be accompanied by hailstorms. During the night towards Thursday 27/11 the phenomena will affect several areas of the rest of the country.
On Thursday 27/11 intense and locally very intense rainfall and thunderstorms will manifest periodically in the Ionian Islands, western mainland, Peloponnese, Eastern Macedonia and Thrace, accompanied locally by hailstorms. It is noted that in the Ionian Islands, western mainland and secondarily in the Peloponnese, hail may be relatively large in size. In the rest of the country, rains and sporadic thunderstorms will also occur, with temporarily intense phenomena. Areas to be affected include the cities of Athens and Thessaloniki.
The rainfall episode is classified as Category 5 (Extreme).
Southern winds with intensities of 6-8 Beaufort will blow in open seas, while intense dust transport from Africa will occur and mud rain will manifest.
On Friday 28/11 the storm will continue with similar characteristics in most of the country. Intense and locally very intense rainfall and thunderstorms will now affect the Eastern Aegean islands and the Dodecanese. At the same time, very strengthened southern winds and increased dust concentrations will persist.
In the forecast maps that follow for the intervals Thursday 27/11, 00:00 – 03:00, Thursday 27/11, 09:00 – 12:00 and Thursday 27/11, 21:00 – 24:00, the areas where rains or thunderstorms will occur and the areas where the greatest probability of hailstorm occurrence is located are depicted.
Black dots depict hail with sizes up to 2 centimeters, red triangles depict hail with sizes larger than 2 centimeters, while white dots show where large quantities of hail are expected.
