Brookings effect

The region is mostly mountainous, characterized by steep river valleys. Elevations in the Chetco River watershed range from sea level to 5,098 feet (1,554 m) at the summit of Pearsoll Peak. Precipitation averages between 45 and 140 inches (1,143 and 3,556 mm) per year, with October through June being the wettest months. Seventy percent of surface runoff is collected from rain, and 30 percent from rain on snow. Twenty-five separate wetlands totaling 93 acres (38 ha) have been identified in the watershed.[2] Temperatures average between 32 and 82 °F (0 and 28 °C), although the Brookings effect (or Chetco effect; similar to a foehn wind) often brings localized hot weather to the Brookings area.[2][8] The increase in temperature is caused by the geography of the region; cool air funnels down the Chetco River valley from the Siskiyou and Coast ranges, gradually heating up before eventually reaching Brookings as a warm wind. The mountains also shield the area from cool marine layers.[8] Partially as a result of this phenomenon, Brookings recorded its highest temperature ever, 108 °F (42 °C), on July 8, 2008.[9]



2010 and 2011 calendars
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