Italy’s Civil Protection Department on Monday issued ‘orange’ alerts for bad weather along Campania’s Tyrrhenian coastline and the western part of Calabria, while Sicily, Basilicata, Lazio, Molise, Umbria, Abruzzo, central-western Sardinia, and the remaining areas of Campania and Calabria are under a lower-level ‘yellow’ weather warning.

The European Centre for Medium-Range Weather Forecasts is warning Italy’s central-southern regions to prepare for a blast of polar air from the Arctic Circle that will bring heavy snowfall, rain and storms, reports national weather forecaster Il Meteo.

The village of Grotte di Castro in the province of Viterbo, two hours’ drive north of Rome, mountainous parts of Sardinia, and much of the province of Campobasso in the central-eastern region of Molise were already blanketed in snow on Monday morning.

🔔🟠 #AllertaARANCIONE, lunedì #29novembre, su Calabria e Campania
🔔🟡 #AllertaGIALLA in nove regioni al Centro-Sud
⛈ 🌬️Ancora temporali e venti forti al Centro-Sud. Leggi l'avviso meteo del 28 novembre👉https://t.co/R3ZF275wdY pic.twitter.com/2ipnxtvZWM

— Dipartimento Protezione Civile (@DPCgov) November 28, 2021

The department is responsible for predicting, preventing and managing emergency events across the country, and uses a green, yellow, orange and red graded colour coding system for weather safety reports.

• From Venice to Mont Blanc, how is the climate crisis affecting Italy?
• Nine in 10 Italians ‘want more action on climate crisis’, new study finds

An orange alert signifies a heavy rainfall, landslide and flood risk, while a yellow alert warns of localised heavy and potentially dangerous rainfall.

The current meteorological conditions mean that snow is expected to reach unusually low altitudes of around 450-500 metres, with flakes already falling thickly on parts of the southern-central Apennines mountain range at 500-700 metres altitude.

The hills of Marche, Abruzzo, Molise, Lazio, Sardinia, Campania, Calabria and Basilicata are likely to see heavy snow around the 500m mark, while areas at an altitude of 1000m or higher will see between 50-60 cm of fresh snow.

In areas where the snow is unlikely to reach, heavy rains and thunderstorms are anticipated, with rain forecast throughout Sardinia, Campania, Calabria and Lazio, reports Il Meteo.

Strong winds are forecast over the whole country, with the island regions of Sicily and Sardinia facing windspeeds of over 100km/hour and the risk of storm surges, according to the national newspaper La Repubblica.

READ ALSO: Climate crisis: The Italian cities worst affected by flooding and heatwaves

The north of the country, meanwhile, will see sun but low temperatures of below 0°C at night in many areas, including across much of the Po Valley.

While conditions are expected to stabilise on Tuesday, cold currents from Northern Europe are forecast to trigger another wave of bad weather on Wednesday and Thursday, with Sardinia and Italy’s western coastline again at risk of storms and heavy rainfall that will move up towards Lombardy, Emilia Romagna and Veneto in the north.