A change in the weather scene for most of the country is predicted from late Friday, with showers and thunderstorms, but also a drop in temperature, with the phenomena persisting on Saturday.
Already today, areas in northern Greece have been hit by a sudden thunderstorm that has caused problems for vehicle traffic.
For today, Friday, local rain and sporadic thunderstorms are forecast, initially in the Ionian Sea, Epirus and western and central Macedonia and gradually in the rest of the mainland, Evia and the Sporades. In the northern Ionian, Epirus, western and central Macedonia and Thessaly the phenomena will be locally strong.
The forecast for Saturday
Rain and thunderstorms are expected on Saturday in most of the country, with the exception of the southern - southeastern island parts. In fact, the phenomena will be locally intense and persistent in parts of Central Macedonia, Thessaly and Eastern Sterea.
The thunderstorms in the northeastern Aegean and Western Sterea are likely to be accompanied by small hail. In the remaining parts, local clouds are expected with the possibility of local showers in Crete. Adverse pyrometeorological conditions will prevail locally in the Dodecanese.
Temperatures will drop significantly on the mainland, according to the meteo of the National Observatory of Athens, ranging from 10 to 23 degrees in Western Macedonia and from 11 to 31 degrees in the rest of Northern Greece, in Epirus from 10 to 30 degrees, in Thessaly from 11 to 25 degrees, in the rest of the mainland from 12 to 31 degrees, in the Ionian Islands from 19 to 27-28 degrees, in Cyclades from 19 to 28-29, in Crete from 15 to 30-32 and the Dodecanese from 19 to 32-33 degrees.
North-northwest winds with intensities up to 6-7 Beaufort in the Ionian Sea and up to 4-5 and locally up to 6 Beaufort in the Aegean Sea.
In Attica showers and thunderstorms are expected. Winds will blow from northerly directions with intensities up to 3-4 Beaufort and in the east up to 5 Beaufort. The temperature will range from 24 to 28 degrees Celsius.
In Thessaloniki showers and thunderstorms are expected. The phenomena will gradually weaken after the afternoon hours. The winds will blow from general northern directions with intensities up to 3-4 Beaufort. The temperature will range from 20 to 25 degrees.
Beware of large volumes of water
In his post, OPEN meteorologist Klearhos Marousakis warns.
At the top of the map there is an indication of the day and time when the forecast is valid and at the bottom of the map the colour scale in millimetres. It is emphasised that 1 millimetre corresponds to a thousand litres of water or one tonne per acre.
Impressive for the time of year that we are seeing the scale ending in several areas which means that there will be areas where we may see over 70 tonnes of water per acre! These values lead to extremely dangerous situations due to flooding or even hail damage etc.
For this reason I deemed it necessary to give freely the results from our meteorological model that we use on our TV station OPEN The Open Channel in order to inform as many people as possible about the dangerousness of the situation.
Warnings from Yannis Kallianos
New warning about the upcoming bad weather which as it seems will also affect Attica from meteorologist and member of the New Democracy Yannis Kallianos.
As he says:
"From today at midnight (roughly the time) and during the night to the dawn of Saturday, the prefecture of Attica will probably be affected by storms, while mainly in the north and northwest of the prefecture may occur much earlier some phenomena. The bulk of them are expected around this time.
Local thunderstorms in Attica may occur from time to time during Saturday and until around noon on Sunday."The forecast for Sunday
Generally clear weather, with occasional clouds on the mainland in the midday and afternoon hours when localised rain will occur, mainly in the mountains.
Winds will blow from northerly directions 3 to 5 in the west and in the Aegean Sea 5 to 6 and locally in the east up to 7 Beaufort.
The temperature will rise slightly and will return to normal for the season.
The weather phenomena started on the eastern side of the city and then reached the western side, with heavy rainfall accompanied by strong winds.
Source.gr
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