Articles | Volume 17, issue 2
Nat. Hazards Earth Syst. Sci., 17, 157–170, 2017
https://doi.org/10.5194/nhess-17-157-2017
Nat. Hazards Earth Syst. Sci., 17, 157–170, 2017
https://doi.org/10.5194/nhess-17-157-2017

Research article 10 Feb 2017

Research article | 10 Feb 2017

A reconstruction of 1 August 1674 thunderstorms over the Low Countries

Gerard van der Schrier and Rob Groenland Gerard van der Schrier and Rob Groenland
  • Royal Netherlands Meteorological Institute, De Bilt, the Netherlands

Abstract. On 1 August 1674 an active cold front moved over the Low Countries. The accompanying thunderstorms along the squall line were abnormally active, leading to large-scale damage in Europe, from northern France to the northern parts of Holland where damages were particularly severe. Using reported and pictured observations of damages and modern meteorological concepts, the reconstruction of the storm points to an exceptionally severe squall line. The orientation and the velocity of the squall line are reconstructed and shows a developed bow-echo structure. An estimate of the strength of the strongest wind gusts is ≈ 55–90 m s−1 and is based on an assessment of the damages caused by this event. A rough estimate of the return time of this event, based on observed hail size, is between 1000 and 10 000 years. This storm is compared to a more recent storm which was similar in dynamics but much less devastating. Special attention is given to the city of Utrecht which was hit hardest, and where the impact of this storm is still recognizable in the cityscape.

Download
Short summary
On 1 August 1674, very severe thunderstorms occurred along a squall line from northern France to the northern parts of Holland, where damages were particularly severe. Using reported and pictured observations of damages, a reconstruction of this storm is made and an interpretation using modern meteorological concepts is given. Special attention is given to the city of Utrecht, which was hit hardest and where the impact of this storm is still recognisable in the cityscape.
Altmetrics
Final-revised paper
Preprint