[wxqc] Spikes again

[Sam Drinkard]

Sam Drinkard wrote:

> Dave,
>
>    I'm seeing spikes again on the pressure plots.  This one is from 
> today, and the spikes occured at or slightly before 0400 and the 2nd 
> one beteen 1745 and 1830z.  First plot is about a 1.75 - 2mb drop, and 
> the 2nd one roughly the same amount.  Nothing there in that time 
> period shows up on wunderground, however wunderground appears to have 
> had a dropout from about 1630-1700, then another couple of dropouts up 
> to current time of 0400z.  There does not appear any such drastic 
> changes in the data they have.  Checked the stations around me, and 
> did not see anything that looked like some kind of spike.  Perhaps you 
> can check into this and let me know if maybe *I've* got a problem with 
> the sensor?  Seems like this is happening every couple or 3 days, and 
> IIRC about the same time.
>
> thanks..
>
> Sam
>
Hate to reply to my own message, but just found a possible 
explaination.  Next station closest to me in Evans is up /down like 
crazy on pressure.  
http://weather.gladstonefamily.net/qchart/AR599?date=20060117  I'm 
positive all that mess can't be helping the "smoothness" of the plots.

Sam