Geoscience Reference
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(a) 20100906 1200 UTC
(b) 20100907 1200 UTC
(c) 20100907 1800 UTC
(d) 20100908 0000 UTC
Fig. 8. DWD operational surface analyses valid at (a) 12 UTC 06 Sept 2010, (b) 12 UTC 07
Sept 2010, (c) 18 UTC 07 Sept 2010, and (d) 00 UTC 08 Sept 2010. The red circle indicates the
area where multiple-Doppler wind retrieval is performed.
The 24-hour accumulated precipitation pattern (Fig. 9) shows a pronounced maximum of
~300 mm over the Gard department. The maximum rainfall amount was recorded close to
the foothills of the Massif Central in the city of Conqueyrac where 308 mm of precipitation
felt in 7 hours. Significant rainfall also occurred over the Massif Central as indicated by a
well-defined band of accumulated precipitation in the range of 75-150 mm. This pattern is
consistent with the slow propagation of the leading surface front noticed in Fig. 8 and
suggests that frontal perturbations have been slowed-down and possibly enhanced by the
Massif Central Mountains.
