Some additional measurements for a 20 minute rain event today.
CoCo gauge .18
Rainwise gauge 111–.18
The above two gauges were inches apart.
CWOP CW5020, VP2 with new spoon tipper—.35
CWOP FW3075, VP2 with old tipper—.19
CWOP FW4350, VP2 with old tipper—.18
The above 3 VP2 stations are on the same fence maybe 20 feet apart, and about 50 feet away from the CoCo and Rainwise gauges.
I thought the new spoon tipper was reading a bit wet, but these differences are clearly more than a “bit wet”, puzzling to say the least. Per MesoWest, most of the “extra rain” came during a 5 minute span. Not sure what these differences mean but as stated previously, puzzling is a good word.