A Derecho in Europe: Berlin, 10 July 2002

Christoph Gatzen Institut für Physik der Atmosphäre, DLR, Oberpfaffenhofen, Germany

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Abstract

The European windstorm that affected parts of Germany on 10 July 2002 is classified as a derecho. With respect to the synoptic situation, it was identified as a dynamic or strongly forced derecho. Examining different observational data, this case shows many similiarities to those investigated in the United States, giving evidence that derechos do occur in Europe as well: A well-defined surface convergence line and a thermal boundary aloft marked the derecho's path, which was associated with a strong upper-level jet streak as well as a low-level jet at the leading edge of the storm.

Corresponding author address: Christoph Gatzen, Institut für Physik der Atmosphäre, DLR, Oberpfaffenhofen, 82234 Wessling, Germany. Email: christoph.gatzen@dlr.de

Abstract

The European windstorm that affected parts of Germany on 10 July 2002 is classified as a derecho. With respect to the synoptic situation, it was identified as a dynamic or strongly forced derecho. Examining different observational data, this case shows many similiarities to those investigated in the United States, giving evidence that derechos do occur in Europe as well: A well-defined surface convergence line and a thermal boundary aloft marked the derecho's path, which was associated with a strong upper-level jet streak as well as a low-level jet at the leading edge of the storm.

Corresponding author address: Christoph Gatzen, Institut für Physik der Atmosphäre, DLR, Oberpfaffenhofen, 82234 Wessling, Germany. Email: christoph.gatzen@dlr.de

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