[wxqc] Alt abberations

[Sam Drinkard]

I know it's not unusual to see an ocassional error in the alt 
department, but I got to thinking.. what happens if the surrounding 
stations altimeter readings are all off the mark by some sigificant 
amount, and yours happens to be within the std. deviation?  Does that 
cause your data to show up as in error?  Not sure I worded that exactly 
how it sounds, but can't think of a better explaination.  Essentially, I 
look at my long term alt readings and they are very close to the 0/0 
line as compared to the rest of the station QC'd, yet this evening, I 
show up with 3 errors out of the 96, and looking at the graph, I do see 
some abberations during the time we had some thunderstorms move thru the 
area right around noon, but the other one looks like about 2130 todays 
date (03/31) with no significant wx event occuring. 

One other point I meant to ask about (Dave/Sandy) is looking at KAGS and 
KDNL both showing the same altimeter, when AGS is at elev. 148' and DNL 
is at 400'+ . Of course, both are ASOS, but should they not be slightly 
different?  I've noticed this consistantly now for at least a month or 
more. 


-- 
Snowman