My understanding (which might well be wrong) was that the ASOS went down to 1/2 mile vis with heavier brief flurries reported on the ground. White runway surrounded by white snow with inadequate snow removal. Good runway because it's left over from a USAF base closed in the 60s, but the town itself is less than 10,000 population served because it's Essential Air Service. They have neither the personnel nor the equipment to keep a runway cleared to the extent a busier field would.