SnowLoadCheck

Jefferson Davis County, MS Roof Snow Load - 5 psf

How much snow is too much for a roof in Jefferson Davis County, MS?

Light
5 psf

5 psf: that's what ASCE 7-22 requires a typical heated home's roof in Jefferson Davis County to carry. 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.

Picture it, not just weigh it: 11 in. if it's fresh powder, 4 in. once it settles, or a mere 1 in. if it's ice. This is a modest add-on to standard roof loading - ordinary residential construction carries it without extra bracing.

Jefferson Davis County, MS: quick facts

How Jefferson Davis County compares

5 psf ranks #2,374 of 2,758 US counties with a mapped snow load (top 86%) - and #65 of 82 in Mississippi. Mississippi counties average 6.5 psf; Jefferson Davis County runs 1.5 psf lower than that.

Population 11,059 (FIPS 28065), roughly 31.5648°N 89.8271°W. The 5 psf ground snow load ASCE 7-22 maps here becomes 5 psf once the code's own design factors are applied.

Typical snowfall in Jefferson Davis County, MS

NOAA's 30-year normal for Jefferson Davis County: 0.6 in. of snow a year, from the PRENTISS, MS US station. (fresh vs. packed vs. ice explains why.)

What this Jefferson Davis County figure assumes

This is a county-level reference figure for a typical heated home built to Risk Category II (ordinary residential), on a partially exposed lot - the assumptions ASCE 7-22 itself treats as the default case. A steeper roof, a fully exposed hilltop lot, an unheated structure, or a higher risk category all change the actual number.

Jefferson Davis County's permit office wants an address-specific figure, not this county average - the ASCE 7 Hazard Tool is free, takes under a minute, and outputs a PDF most reviewers accept. See the methodology guide.