WIVIS - Visibility Test Summary (PDF 18 KB)

This report describes the results of the testing of the visibility portion of the OSi Weather Identifier and Visibility Sensor (WIVIS). The first test was conducted from late December 1993 to early February 1994. The second test was conducted from December 1996 to May 1997. The purpose of the tests was to validate the WIVIS visibility measurement against recognized NWS standards in different weather conditions. Data was presented which compare the WIVIS visibility to the average of ASOS approved standard visibility sensors. This report only addresses the WIVIS performance when the visibility was 10 miles or less.