This map produced by NASA shows rainfall totals in northern Italy – and elsewhere around the Mediterranean Sea – from November 6 to 13, 2012. That’s when a series of storm systems produced large floods in Italy.
The heaviest rainfall — more than 320 millimeters (12.6 inches) — appears in dark blue. The lightest—less than 40 millimeters (1.6 inches)—appears in light green. Trace amounts of rain appear in pale yellow. Scientists at NASA’s Goddard Space Flight Center created this map using the combined measurements from many satellites. Read more about this map here.
NASA also reported that the heavy rains in Italy in November 2012 appeared to fit within a pattern from the past decade or so. They said:
… the long-term average for rainfall in November in Italy is 80 millimeters (3.14 inches). However, November precipitation totals have surpassed 100 millimeters (3.93 inches) seven times since 1999.
Bottom line: NASA has released a map showing the heavy rainfall in northern Italy in November 2012, made by combining measurements from many satellites.