The first of a series of storms, embedded in strong westerly flow, brings torrential rain to Western and Central Europe - risk of floods is increasing.
04 May 2023
28 January 2021
By Jochen Kerkmann and Natasa Strelec Mahovic (EUMETSAT)
Forecast charts issued by German Weather Service DWD (Figures 1 and 2) show the cyclone named Olaf approaching the UK on 28 January, followed by Storm Peter coming from the Atlantic on 29 January.
The Meteosat-11 Airmass RGB imagery overlaid with H-SAF precipitation product from 28 January 00:00 to 08:00 UTC (Figure 2) shows the intensity of the rainfall within the first system (Olaf).
The loop of the MIMIC TPW product (Figure 4) shows intensive transport of moisture from the Atlantic towards Western Europe, that will become even more intensive with development of the cyclone Peter, which is already indicated in Figure 3 by very high values of TPW over central Atlantic.
MeteoFrance issued heavy rain and flood warnings for parts of France in Meteoalarm system for 28 and 29 January (Figure 5) and between 50-100mm of rain was forecast in central-southern Germany over the subsequent six days.