Grenada County, MS Roof Snow Load - 10 psf
What ASCE 7 says about snow load in Grenada County
That's Grenada County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. ASCE 7's low-slope-roof minimum (§7.3.4) raises the governing figure to 10 psf - higher than the 7 psf the ground-load formula alone would give, and the code says use the larger one.
Converted to something you can actually eyeball on a roof: about 22 in. of fresh powder, 8 in. once it settles and packs down, or just 2 in. if it's turned to ice. A modest addition to standard roof loading. Ordinary residential construction handles this without extra bracing.
Grenada County at a glance
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,901 of 2,758
- Mississippi rank#20 of 82
- Population20,931
- Annual snowfall, NOAA normal1.1 in.
- FIPS28043
Where Grenada County's figure sits nationally
Out of 2,758 rated US counties, Grenada County sits at #1,901, the top 69% nationally - #20 of 82 within Mississippi. 6.5 psf is Mississippi's typical county figure - Grenada County beats it by 3.5 psf.
Near 33.77°N 89.8027°W, FIPS 28043: Grenada County counts 20,931 residents and a 10 psf map value, which the code's own factors turn into 10 psf.
How much it actually snows in Grenada County
Most winters bring Grenada County roughly 1.1 in. of snow - NOAA's normal at GRENADA, MS US, 0.9 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Grenada 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 Grenada County's county-wide figure. See the methodology guide.