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  Conabio » Monitoring of ecosystems » Natural desaster case Hurricane Pauline » Isohyets
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ISOHYETS

Annual Total Rainfall.- Rainfall ranges between 600 mm and 1800 mm. Here is the distribution: the SOUTHERN part of the study area registers the smallest precipitation, from 800 to 1000 mm. The central and central-western areas register higher rainfall, between 1000 and 1800 mm. In the northern part, rainfall drops from 1500 to 600 mm. This results from several factors: first, relief; orographic rains occur in the zone with the highest values for rainfall. Orographic rains occur when air masses rise along the slope of a mountain (windward) -here, specifically the Sierra Madre del Sur-, air is then condensed and produces rainfall. Therefore, convective diurnal rainfall is characteristic in most of Hurricane Pauline's zone of impact.

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