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<DIV><SPAN class=164475802-01042005><FONT face=Arial size=2>If we are in a heavy
fog, am I incorrect in believing that the RH is 100%? As I look at my QC data
for Today, I note that I am supposedly in error from 05:00 - 10:00 for
reporting a dew point pretty close to ambient temperature - ie; 100% humidity.
During that time period, the entire area, including the weather service was
under an extremely dense fog. <A
href="http://weather.gladstonefamily.net/cgi-bin/wxqchart.pl?date=20050401&site=C3321">http://weather.gladstonefamily.net/cgi-bin/wxqchart.pl?date=20050401&site=C3321</A></FONT></SPAN></DIV>
<DIV><SPAN class=164475802-01042005><FONT face=Arial size=2>And the surrounding
stations are reporting similar data....</FONT></SPAN></DIV>
<DIV><SPAN class=164475802-01042005><FONT face=Arial size=2><A
href="http://www.srh.noaa.gov/data/obhistory/KILM.html">http://www.srh.noaa.gov/data/obhistory/KILM.html</A></FONT></SPAN></DIV>
<DIV><SPAN class=164475802-01042005><FONT face=Arial size=2><A
href="http://www.srh.noaa.gov/data/obhistory/KLBT.html">http://www.srh.noaa.gov/data/obhistory/KLBT.html</A></FONT></SPAN></DIV>
<DIV><SPAN class=164475802-01042005><FONT face=Arial size=2><A
href="http://www.srh.noaa.gov/data/obhistory/KFAY.html">http://www.srh.noaa.gov/data/obhistory/KFAY.html</A></FONT></SPAN></DIV>
<DIV><SPAN class=164475802-01042005><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=164475802-01042005><FONT face=Arial size=2>I have three
temperature sensors, and a Honeywell HIH 3610 humidity sensor in a fan
aspirated tube with an intake 5 feet off the grass. The temperature sensors all
read within .2 degrees F, and previously been verified accurate accurate within
.3 degrees F at 32 F, and 212 F, I'm not likely to be reporting incorrect
temperature. The Honeywell humidity sensor has a claimed accuracy of 2%
Rh. </FONT></SPAN></DIV>
<DIV><SPAN class=164475802-01042005><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=164475802-01042005><FONT face=Arial size=2>SO..... If we are
experiencing "can't see two feet in front of you" fog, should I not be reporting
ambient temp = RH?</FONT></SPAN></DIV></BODY></HTML>