Poor signal when it rains
I have a recurring problem every time it rains. When it is raining, my downstream power levels go from their normal of about -6 dBmV to about -14 dBmV and the SNR drops from its normal 43 dB down to the mid to upper twenties. At the same time my Event Log shows an MDD Message Timeout about every 10 seconds and occasional T3 Timeouts. Obviously my modem stability and my speeds take a hit during rainstorms.
After the rain stops and things dry out, everything returns to normal and I have a reliable connection once again.
I’m afraid that if I scheduled a tech visit, the tech would most likely come when it was not raining, would check my signal levels, say they all looked excellent, and that would be the end of it.
Modem is a Netgear CM1200, there are no splitters coming into the house, and I’ve checked the junction box outside my house and it is not leaking any water.