Service going down periodically - beam 68

I have Gen5 service on beam 68 in Maryland. Last night, beginning at 10:09 PM EDT, I started getting notifications from my monitoring system that the Hughes service was down. This has continued throughout the day today. I logged in to the HT2000W and noticed that the receive signal strength is lower than usual- it's fluctuating from the low 50's to mid 80's. I usually have a received signal in the high 90s. I am not home now to tell whether there is an obstruction in front of the dish, but it's very unlikely that the dish has shifted--it's mounted using a very solid galvanized steel commercial antenna mount. Are there known issues on this beam right now, or am I looking at a local problem?