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Beginning on 4 September 2023, heavy floods occurred from torrential rain as Storm Daniel, also known as Cyclone Daniel or Medicane Daniel, hit Southeast Europe and parts of Northern Africa including Turkey, Greece, Bulgaria, Egypt and Libya. At least 226 people were confirmed dead, most of them in Libya, where local officials said the final death toll could exceed at least 2,500. The storm was the result of an Omega block, as a high-pressure zone became sandwiched between two zones of low pressure, shaping a Greek letter Ω.
Floods in Greece
On 5 September, at least one person died in floods in Thessaly, Greece. On the same day, the village of Zagora received 1,092 millimetres (3.583 ft) of rain, 55 times higher than the average rainfall for the same month across the country. In Portaria, new record amounts of rain were also measured at 884 millimetres (2.900 ft) per square meter; however, further rainfall could not be measured because the weather station subsequently failed. On 6 September, the Krafsidonas river, which rises at Pelion, overflowed its banks in Volos and destroyed a bridge.
On 7 September, the main Greek motorway between Athens and Thessaloniki was closed and train services between the two cities were suspended. In Thessaly, buildings and bridges tore down and whole cities submerged, where over 800 people had to be rescued.] In Larissa, after the rains ended on 8 September, the water continued to rise as the Pineios river overflowed its banks to reach a level of 9.5 metres (31 ft), compared to the normal at around 4 metres (13 ft).
Since the rainfall started, the Copernicus Programme's Rapid Mapping Service was activated for the flood zone in Greece, in which analysis of the Sentinel-1 data from 7 September revealed an estimated flood area of around 73,000 hectares (180,000 acres). Meteorologists classified the storm as Greece's worst since records began in 1930. In addition, the floods in Thessaly, which supplies about 15% of Greece's agricultural production, destroyed the crops for the remainder of the year and caused serious long-term damage as the thick layer of mud would make the soil infertile overall, taking up to 5 years to become fully functional again. The governor of Thessaly, Kostas Agorastos, told the ERT that the storm damage in the region was valued at more than €2bn.
On 10 September, four bodies were found in Greece, raising the death toll in the country to 15 with two people were still missing.
Rainfall in Kosti was measured at 311 mm (420% of the monthly average for September), in Ahtopol it amounted to 196 mm (350% of the monthly average), in Gramatikovo to 275 mm (368% of the monthly average). In Tsarevo, rainfall may have set a Bulgarian national record, with 330 mm of precipitation within 20 hours (40% of the annual average).
A rare waterspout was observed in the sea near Tyulenovo in northeastern Bulgaria.
Storm Daniel on 9 September 2023
On 9 September, the storm which was initially a subtropical depression become a subtropical storm with winds recorded by ASCAT at 45 knots (83 km/h; 52 mph).The storm then hit Libya on 10 September, in which the National Oil Corporation announced a three-day closure of four oil ports including: Ras Lanuf, Zueitina, Brega and Sidra. In Derna, at least 150 people were confirmed dead after two dams collapsed, causing catastrophic damage across the area. According to Libyan officials, up to 2,500 people were feared dead and 7,000 others were left missing.
Outside of Derna, the storm also killed 23 and left dozens missing in Bayda, and there were also seven deaths reported in Susa, seven more in the towns of Omar al-Mokhtar and Shahhat and another in Marj. In total, around 200 people were confirmed to have died in Libya.
Egypt
The storm was expected to hit Egypt on September 11. Parts of the northwestern part of the country experienced severe rainstorms.
Fonte: https://en.wikipedia.org/wiki/Storm_Daniel
Beginning on 4 September 2023, heavy floods occurred from torrential rain as Storm Daniel, also known as Cyclone Daniel or Medicane Daniel, hit Southeast Europe and parts of Northern Africa including Turkey, Greece, Bulgaria, Egypt and Libya. At least 226 people were confirmed dead, most of them in Libya, where local officials said the final death toll could exceed at least 2,500. The storm was the result of an Omega block, as a high-pressure zone became sandwiched between two zones of low pressure, shaping a Greek letter Ω.
Meteorological history
An area of low pressure developed over the Ionian Sea with its warmth helped to produce the moisture needed to the storm's formation. On 4 September, the storm moved inland over the Balkan Peninsula which led to torrential rains over the region. It was named Storm Daniel the following day by the Hellenic National Meteorological Service. The system would then move northeastward before executing a loop. The system would then gain subtropical characteristics on September 8, and would move southeastward before then becoming a tropical storm the following day. The storm would make landfall near the city of Benghazi in Libya as a tropical storm on September 10, and then would continue inland before degenerating into a remnant low soon after due to dry air.Events
Greece
On 5 September, at least one person died in floods in Thessaly, Greece. On the same day, the village of Zagora received 1,092 millimetres (3.583 ft) of rain, 55 times higher than the average rainfall for the same month across the country. In Portaria, new record amounts of rain were also measured at 884 millimetres (2.900 ft) per square meter; however, further rainfall could not be measured because the weather station subsequently failed. On 6 September, the Krafsidonas river, which rises at Pelion, overflowed its banks in Volos and destroyed a bridge.
On 7 September, the main Greek motorway between Athens and Thessaloniki was closed and train services between the two cities were suspended. In Thessaly, buildings and bridges tore down and whole cities submerged, where over 800 people had to be rescued.] In Larissa, after the rains ended on 8 September, the water continued to rise as the Pineios river overflowed its banks to reach a level of 9.5 metres (31 ft), compared to the normal at around 4 metres (13 ft).
Since the rainfall started, the Copernicus Programme's Rapid Mapping Service was activated for the flood zone in Greece, in which analysis of the Sentinel-1 data from 7 September revealed an estimated flood area of around 73,000 hectares (180,000 acres). Meteorologists classified the storm as Greece's worst since records began in 1930. In addition, the floods in Thessaly, which supplies about 15% of Greece's agricultural production, destroyed the crops for the remainder of the year and caused serious long-term damage as the thick layer of mud would make the soil infertile overall, taking up to 5 years to become fully functional again. The governor of Thessaly, Kostas Agorastos, told the ERT that the storm damage in the region was valued at more than €2bn.
On 10 September, four bodies were found in Greece, raising the death toll in the country to 15 with two people were still missing.
Turkey
In Turkey, five people were killed during the floods in Kırklareli, another two died in the Istanbul districts of Başakşehir and Küçükçekmece.Bulgaria
Villages on and near the Black Sea coast in Burgas Province of southeastern Bulgaria were submerged, including Kosti and Arapya with people being evacuated. Three people were swept away after a bridge collapsed in the Tsarevo area, and another person also drowned near the town.Rainfall in Kosti was measured at 311 mm (420% of the monthly average for September), in Ahtopol it amounted to 196 mm (350% of the monthly average), in Gramatikovo to 275 mm (368% of the monthly average). In Tsarevo, rainfall may have set a Bulgarian national record, with 330 mm of precipitation within 20 hours (40% of the annual average).
A rare waterspout was observed in the sea near Tyulenovo in northeastern Bulgaria.
Libya
Storm Daniel on 9 September 2023
On 9 September, the storm which was initially a subtropical depression become a subtropical storm with winds recorded by ASCAT at 45 knots (83 km/h; 52 mph).The storm then hit Libya on 10 September, in which the National Oil Corporation announced a three-day closure of four oil ports including: Ras Lanuf, Zueitina, Brega and Sidra. In Derna, at least 150 people were confirmed dead after two dams collapsed, causing catastrophic damage across the area. According to Libyan officials, up to 2,500 people were feared dead and 7,000 others were left missing.
Outside of Derna, the storm also killed 23 and left dozens missing in Bayda, and there were also seven deaths reported in Susa, seven more in the towns of Omar al-Mokhtar and Shahhat and another in Marj. In total, around 200 people were confirmed to have died in Libya.
Egypt
The storm was expected to hit Egypt on September 11. Parts of the northwestern part of the country experienced severe rainstorms.
Fonte: https://en.wikipedia.org/wiki/Storm_Daniel
