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The plots below shows the evolution for 24-hour precipitation on 30 April for Rotterdam (left) and Reading (right) for ensemble (blue) and HRES (red dot). Then the western edge shifted in the last forecasts before the event, Reading became on the dry side while the rain appeared further to the east (e.g Rotterdam) instead.
Convective hazards forecasts valid for 29 April picked up severe convection 4 to 5 days in advance.
3.4 Monthly forecasts
3.5 Comparison with other centres
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