EGU24-12908, updated on 09 Mar 2024
https://doi.org/10.5194/egusphere-egu24-12908
EGU General Assembly 2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Meteorological and Remote Sensing Analysis of the Severe Storm “Daniel” over Greece

Panagiotis T. Nastos1, Elissavet Feloni1, Alexandros Paraskevas2, and Ioannis T. Matsangouras1,2
Panagiotis T. Nastos et al.
  • 1Laboratory of Climatology and Atmospheric Environment, Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Athens, Greece (nastos@geol.uoa.gr)
  • 2Hellenic National Meteorological Service, Athens, Greece (john_matsa@geol.uoa.gr)

Omega blocking, a meteorological phenomenon characterized by a persistent high-pressure system resembling the Greek letter omega (Ω) in the atmosphere, has recently been observed in the Mediterranean region. This atmospheric setup can have significant impacts on the weather patterns in the area, leading to prolonged periods of stable and dry conditions or, conversely, intense storms. One noteworthy instance of this phenomenon occurred with the arrival of Storm “Daniel" in Greece on September 4, 2023. This storm brought about a substantial disruption in the Mediterranean climate, particularly in the Thessaly region, Central Greece. The combination of omega blocking and Storm “Daniel” resulted in exceptionally high levels of precipitation and severe weather conditions, leading to significant flooding and damage in affected areas. The Thessaly region, Central Greece bore the brunt of the storm, experiencing significant flooding that damaged homes, roads, and agricultural areas. This inundation also led to the displacement of residents and posed challenges for local authorities in providing relief and assistance. Additionally, Storm “Daniel” had an economic impact, particularly on agriculture, as crops were damaged or destroyed by the excessive rainfall. Transportation networks were also affected, causing delays and disruptions in the affected areas. Overall, Storm Daniel underscored the need for effective disaster preparedness and response measures in Greece to minimize the impact of such severe weather events in the future and protect the well-being of its residents.

This research paper delves into a thorough examination of the severe Storm "Daniel," which impacted Greece on September 4, 2023, with a particular emphasis on its significant consequences on September 5, 2024. An all-encompassing approach is employed to analyze the storm, including a synoptic assessment, a thorough examination of weather conditions, and the utilization of remote sensing data. The synthesis of synoptic analysis yields insights into the broader atmospheric patterns and dynamics that contributed in the formation and progression of Storm "Daniel". Additionally, the incorporation of remote sensing data provides a distinctive perspective on the storm's characteristics, including its spatial extent, precipitation distribution, and the identification of vulnerable areas. By integrating these three analytical aspects, our aim is to provide a comprehensive overview of Storm “Daniel”, shedding light on its genesis, intensification, and the crucial meteorological factors that contributed to its exceptional precipitation.

Understanding the relationship between omega blocking and the occurrence of storms like “Daniel” in the Mediterranean is crucial for predicting and mitigating the potential impacts of such extreme weather events in the future. This research and analysis can aid in developing more accurate forecasting and early warning systems to protect communities in the region from the adverse effects of these atmospheric phenomena.

How to cite: Nastos, P. T., Feloni, E., Paraskevas, A., and Matsangouras, I. T.: Meteorological and Remote Sensing Analysis of the Severe Storm “Daniel” over Greece, EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-12908, https://doi.org/10.5194/egusphere-egu24-12908, 2024.