I purchased a Tempest last year and I'm rather happy with it. That being said:
1.) The haptic rain sensor is not reliable during very light or heavy precipitation.
2.) The wind seems to be under reporting.
Amazing shot. Are these you COOP stations on your property? Do you know what happened to the Carroll Valley AWOS? They seem to not report anymore. Site R seems pretty hit or miss anymore too.
This is a winter board. We tolerate 10 months to live for 2. Every year, we see winter slip away slowly. Then, when things get close, folks get jumpy if it looks the every diminishing window for snow looks to be a dud. It's an annual ritual.
We're aware of significant data gaps in northern Baltimore, Harford, Howard, Charles, and Kent counties. The Baltimore County gap is especially problematic for the I-83 corridor in the winter as I'm sure you're aware.