SnowLoadCheck

Sunflower County, MS Roof Snow Load - 10 psf

Sunflower County, MS roof snow load, translated

Light
10 psf

A typical heated home in Sunflower County is designed to carry 10 pounds per square foot of snow on its roof, per ASCE 7-22. 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.

On a roof that means 22 in. of fresh snow, 8 in. once it packs down, or 2 in. of solid ice - three very different piles for the same load. A modest addition to standard roof loading. Ordinary residential construction handles this without extra bracing.

Snow on Sunflower County's roofs right now?

in. of

Sunflower County in numbers

Where Sunflower County ranks

#18 of 82 Mississippi counties by design load, top 68% of 2,758 nationally - that's Sunflower County's spot. Mississippi counties average 6.5 psf; Sunflower County runs 3.5 psf higher than that.

FIPS 28133, population 23,029, centered near 33.6055°N 90.5951°W. ASCE 7's underlying ground snow load here is 10 psf before the code's exposure and importance factors bring it to the 10 psf design figure above.

Sunflower County: average annual snowfall

Sunflower County sees about 0.5 in. of snow most winters, per the MOORHEAD, MS US station's 1991-2020 NOAA normal. See the density guide.

Read this before you use Sunflower County's figure

The figure above assumes the case ASCE 7-22 treats as typical: a heated, ordinary-occupancy home on a partially exposed site. Change any of those - exposure, heating, roof pitch, occupancy category - and the real design number moves.

A building permit needs the number at your exact address, not the county average - the free ASCE 7 Hazard Tool returns that from your coordinates in about a minute and produces a PDF a plan reviewer will accept. See the methodology guide.