Humphreys County, MS Roof Snow Load - 5 psf
Humphreys County, MS: your roof's ASCE 7 snow number, in plain English
Humphreys County's roofs are built to hold 5 psf of snow, the ASCE 7-22 figure a permit reviewer checks first. ASCE 7's low-slope-roof minimum (§7.3.4) raises the governing figure to 5 psf - higher than the 3.5 psf the ground-load formula alone would give, and the code says use the larger one.
In depth, not weight: that's roughly 11 inches of fresh, light snow, 4 inches of old, settled snow, or as little as 1 inches of solid ice - snow that heavy is rare here but ice from a freeze-thaw cycle adds up far faster than the depth suggests. This is a modest add-on to standard roof loading - ordinary residential construction carries it without extra bracing.
Humphreys County at a glance
- Design roof snow load5 psf
- Ground snow load, ASCE 7 map5 psf
- National rank#2,418 of 2,758
- Mississippi rank#69 of 82
- Population7,121
- Annual snowfall, NOAA normal0.1 in.
- FIPS28053
Humphreys County by the numbers
Nationally that's #2,418 out of 2,758 rated counties, the top 88%; within Mississippi alone, Humphreys County ranks #69 of 82. Mississippi counties average 6.5 psf; Humphreys County runs 1.5 psf lower than that.
Humphreys County, FIPS 28053, is home to 7,121 people near 33.131°N 90.5234°W. Its 5 psf ground snow load figure is the map value; 5 psf is what a roof is actually designed for.
Humphreys County's snowfall, most winters
0.1 in. a year: that's Humphreys County's NOAA 1991-2020 snowfall normal, measured at BELZONI, MS US (3.7 mi away). See the density guide.
Before you rely on Humphreys County's number
Treat the Humphreys County figure as a starting point, not a final answer: it assumes standard occupancy, a heated structure and a moderately sheltered site, per ASCE 7-22's own defaults. Exposed terrain, an unheated building or a steeper roof all shift the real number.
For a real application, skip the county number and go straight to the ASCE 7 Hazard Tool - enter your coordinates and it returns a site-specific figure a plan reviewer will recognize. Details: the calculation guide.