Friday, July 30, 2010

The Phoenix Rainfall Index (PRI)


The PRI for yesterday's storm event in Phoenix is shown above. Coverage of measurable rainfall was not as great as down here in eastern Pima County. The heaviest rain amounts tended to be out in the northwest region of Phoenix, although one of the largest amounts was recorded just west of the La Estrella Mountains. A technical paper describing the PRI by Paul M. Iniguez can be found at:

http://www.wrh.noaa.gov/psr/PRI/PRI.pdf

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