DISCUSSION: A persistent cut-off upper-level low dumped copious amounts of rain over the Italian island of Sicily early this morning (local time). Heavy rains also impacted coastal communities in Algeria where cars were seen floating down roadways completely submerged under several feet of fast moving water. This recent rainfall comes on top of an already wet September across the Mediterranean. Videos posted to Facebook convey the destructive damage as the flash floods swept through Algeria earlier today. The pattern across much of Europe has remain consistent over the past month which has set the stage for flooding to occur across these rain soaked regions. Weather forecasters, looking at the important weather models, are warning that up to 50mm (about 2 inches) of additional rain are expected in some of the same areas in the upcoming week.
Sicily typically sees around 42mm of rainfall each September, according to local climatological averages. However, this month has been unusually wet due to a persistent upper-level low hanging out over the Mediterranean for the majority of the month. Official numbers for Algeria are harder to come by as weather observations are virtually nonexistent across the country.
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~ Meteorologist Jake Keiser