There's a thread from about a year ago ("PNS generation showing
duplicate data") in which duplicate reports with different values
and times were showing up in PNS products. It was supposed to be
fixed, but I'm getting a similar error with snowfall reports.
This is very problematic with frequent-updating spotters, since we
might to grab all reports up to 6 hours old (especially if the storm
has ended in the far west of the CWA, and is still on-going in the far
east, even reports over 6 hours old may be valid "Storm Totals").
Attached is an example. Note the METADATA section shows the same
Lat/Lon, but it happily included all three reports for Beach Lake, PA
instead of tossing out the older reports. I thought this used to work
in IRIS, and ECLAIRS even had a radius filter in case the lat/lons
weren't quite the same but were really close together.
It'd be really nice if when generating a PNS, you could select
different report age cutoff times for different counties/zones.
