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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 15, issue 4
Ann. Geophys., 15, 494–502, 1997
https://doi.org/10.1007/s00585-997-0494-3
© European Geosciences Union 1997
Ann. Geophys., 15, 494–502, 1997
https://doi.org/10.1007/s00585-997-0494-3
© European Geosciences Union 1997

  30 Apr 1997

30 Apr 1997

An overview of a heavy rain event in southeastern Iberia: the role of large-scale meteorological conditions

F. Valero, M. Y. Luna, and M. L. Martín F. Valero et al.
  • Dpto. Astrofísica y CC. de la Atmósfera, Facultad de CC. Físicas, Universidad Complutense de Madrid, 28040 Madrid, Spain

Abstract. The heavy rain event of 30 January to 4 February 1993 in the Segura Basin in SE Iberia is investigated. The study emphasizes the atmospheric processes that led to thunderstorm development. The meteorological scenario has been separated into preconvective and convective periods and into large-scale and subsynoptic settings. The warm, moist air flow from the Mediterranean Sea, channelled by a high-over-low blocking pattern with a cold front over southeastern Iberia appears to be the main reason that helped trigger a severe weather occurrence. The study of the mesoscale environment parameters showed an enhanced conditional unstability through a deep troposphere layer with a moderate to strong vertical wind shear that promoted conditions to allow organization of long-lived convective structures.

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