Homeowners can choose from a variety of.
Snow blocking roof vents.
If enough snow falls in your area during a short period of time the pipes may become clogged with the snow which may freeze in the vent pipe.
And it s a good quality ridge vent but it has the added addition of a filter material that is in the baffle part of it in the porous part of it so that that stops the snow from doing exactly what it s doing in your case which is blowing in.
Residential and commercial customers will benefit from safer roofs less customer complaints of falling snow and ice less damage to roof vents and overall peace of mind during the winter months.
Some companies such as snowvenco are developing roof exit vents designed to prevent wind blown snow leakage into the roof but those vents may still become snow covered and thus snow blocked.
Roofers often complain that roof vents battered by storms can fail allowing blowing snow and rain to penetrate the attic.
You either need to separate the attic spaces with an air barrier of some kind never tried it or close off the lower vents that are intaking and add as much ventilation to the upper roof as you block off on the lower.
Snow jax snow stops snow guards snow brackets snow blocks or snowguards and typically are installed on commercial metal roof buildings.
Also forgot to mention make sure that blown in insulation is not blocking the soffit ventilation.
Invented by a roofer to defeat the harsh canadian winters this csa approved static box vent has been independently tested to block 99 99 of snow and rain even in severe storm conditions.