SnowLoadCheck

Union County, MS Roof Snow Load - 10 psf

Union County, MS: your roof's ASCE 7 snow number, in plain English

Light
10 psf

Union County's roofs are built to hold 10 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 10 psf - higher than the 7 psf the ground-load formula alone would give, and the code says use the larger one.

In depth, not weight: that's roughly 22 inches of fresh, light snow, 8 inches of old, settled snow, or as little as 2 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. A modest addition to standard roof loading. Ordinary residential construction handles this without extra bracing.

Union County, MS: quick facts

Union County by the numbers

Nationally that's #1,852 out of 2,758 rated counties, the top 67%; within Mississippi alone, Union County ranks #14 of 82. Mississippi counties average 6.5 psf; Union County runs 3.5 psf higher than that.

Union County, FIPS 28145, is home to 28,363 people near 34.4895°N 89.0023°W. Its 10 psf ground snow load figure is the map value; 10 psf is what a roof is actually designed for.

Union County's snowfall, most winters

1.2 in. a year: that's Union County's NOAA 1991-2020 snowfall normal, measured at NEW ALBANY, MS US (1.1 mi away). See the density guide.

Before you rely on Union County's number

Treat the Union 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. See the methodology guide.