Wayne County, MS Roof Snow Load - 5 psf
What ASCE 7 says about snow load in Wayne County
That's Wayne County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. §7.3.4's low-slope minimum of 5 psf is what actually governs on a flat or low-pitch roof here - higher than the 3.5 psf the base ground-load formula gives.
Converted to something you can actually eyeball on a roof: about 11 in. of fresh powder, 4 in. once it settles and packs down, or just 1 in. if it's turned to ice. A modest addition to standard roof loading. Ordinary residential construction handles this without extra bracing.
Wayne County in numbers
- Design roof snow load5 psf
- Ground snow load, ASCE 7 map5 psf
- National rank#2,300 of 2,758
- Mississippi rank#54 of 82
- Population19,749
- Annual snowfall, NOAA normal0.6 in.
- FIPS28153
Where Wayne County's figure sits nationally
Out of 2,758 rated US counties, Wayne County sits at #2,300, the top 83% nationally - #54 of 82 within Mississippi. 6.5 psf is Mississippi's typical county figure - Wayne County comes in 1.5 psf under it.
Near 31.6425°N 88.6782°W, FIPS 28153: Wayne County counts 19,749 residents and a 5 psf map value, which the code's own factors turn into 5 psf.
How much it actually snows in Wayne County
Most winters bring Wayne County roughly 0.6 in. of snow - NOAA's normal at WAYNESBORO 2 W, MS US, 2.4 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Wayne County's number above is ASCE 7-22's default case, not a custom calculation: ordinary residential occupancy, heated, sited on ground that's neither fully sheltered nor fully exposed. Any one of those changing - pitch, exposure, heating, occupancy - moves the real figure.
Nothing here substitutes for an address-level number. Get one free, in about a minute, from the ASCE 7 Hazard Tool using your own coordinates rather than Wayne County's county-wide figure. Details: the calculation guide.