The weather will deteriorate rapidly with EMS issuing an emergency bulletin for severe weather Bora.

The National Observatory warns in its latest forecast that the main feature of bad weather Bora during Saturday Nov. 30 and Sunday Dec. 1 will be heavy snowfall.

Snowfall will be located in the continental mountains, especially in Central and Northern Greece, as well as in lower altitude areas of Western Macedonia. Heavy snowfall and high snow depths are expected in the city of Florina.

The forecast map shows the geographical distribution and the estimated cumulative snow depth in the country until noon on Sunday 1 December:

The map of the forecast and the distribution of the snow cover for the day of December 1, 2014.

The forecast for the second half of Sunday, 1 January 2013, is as follows.

Earlier, Meteo in its forecast warned that the risk of the rainfall episode is at category 5. According to the forecast, the two-day period Saturday 30/11 and Sunday 1/12 will see severe weather across almost the entire country with:

1. Heavy and locally persistent rainfall and thunderstorms.
2. Local hail, mainly in the west, central and south.
3. Snow in the continental highlands, as well as in areas of Western Macedonia with lower altitude.

Winds will be very strong from the south on Saturday 30/11. Gusty eastern northeastern winds in the North Aegean, Thermaikos and in areas of Macedonia (mainly Chalkidiki and Pieria) from Saturday evening 30/11

The reason for this change in weather will be an atmospheric disturbance in the middle troposphere which is expected to be cut off (cold lake) from the general atmospheric circulation and move slowly, initially towards the Southern Ionian Sea, and then towards the Southern Aegean Sea. The slow movement of the cold lake and the barometric low associated with it will result in strong and persistent phenomena in many areas of the country.

Saturday

Deteriorating weather across the country with showers and thunderstorms, locally and at times heavy.
Snow will fall in the northern highlands. Winds will blow from the south and locally in the north from the north, 4 to 6 and in the seas locally 7 Beaufort. From the afternoon in the east will reach locally 8 and in the northeast 9 Beaufort.
The temperature will drop mainly in the west and north. It will reach 14 degrees Celsius in the northern mainland, 16 in the west and 18 to 20 degrees Celsius in the rest of the country.

Sunday (1/12)

Showers and thunderstorms are forecast throughout the country. The phenomena will be locally strong mainly in central Macedonia (especially in the prefectures of Halkidiki, Thessaloniki, Imathia and Pieria), eastern Macedonia, Thrace, Thessaly, Sporades, eastern Sterea (including Attica), Evia, the East Aegean islands, the Dodecanese, the Cyclades and Crete (especially in the western parts). Snow will fall in the mountains of the northern and central parts of the country. In fact, snowfall is also expected in the mountains of Macedonia and Epirus in semi-mountainous areas, while in the mountains of these regions it will be dense.

Winds will blow in the west west west northwest 4 to 6 and occasionally locally 7 Beaufort, in the north east northeast 8 to 9 and in the remaining areas from southern directions 5 to 7 and locally in the east 8 Beaufort with gradual weakening from the afternoon. The temperature will drop almost all over the country. It will reach 12 to 14 degrees Celsius in Macedonia, Thrace and Epirus (in the northwest 8 to 10 degrees Celsius), in the Ionian Sea, the northern Aegean, the central and southern mainland 15 to 17 degrees Celsius and only in the Cyclades, Crete and the Dodecanese 18 to 20 degrees Celsius.

Monday (2/12)

Showers and thunderstorms are forecast throughout the country. The phenomena will be locally strong mainly in the southern parts of central Macedonia, eastern Thessaly, eastern Sterea, Evia, Sporades, the eastern Aegean islands and the Dodecanese. A gradual easing of the phenomena is expected in the Ionian Sea, the western and northern mainland, while in the remaining areas they will remain strong in places until the afternoon. Snow will fall in the mountains, mainly in the central and northern parts of the country.

Winds will blow from northern directions 4 to 6 and locally in the northern Aegean Sea 7 Beaufort, while in the southeast from southern directions up to 5 Beaufort. The temperature will drop slightly further and will be slightly below normal for the season.