Harrison County, MS Roof Snow Load - 0 psf

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

Picture it, not just weigh it: 0 in. if it's fresh powder, 0 in. once it settles, or a mere 0 in. if it's ice. This county’s ground snow load maps to zero - snow load is not a driver of roof design here.

Snow on Harrison County's roofs right now?

Harrison County in numbers

• Design roof snow load0 psf
• Ground snow load, ASCE 7 map0 psf
• National rank#2,548 of 2,758
• Mississippi rank#73 of 82
• Population213,730
• Annual snowfall, NOAA normal0.2 in.
• FIPS28047

How Harrison County compares

0 psf ranks #2,548 of 2,758 US counties with a mapped snow load (top 92%) - and #73 of 82 in Mississippi. 6.5 psf is Mississippi's typical county figure - Harrison County comes in 6.5 psf under it.

Population 213,730 (FIPS 28047), roughly 30.4165°N 89.0834°W. The 0 psf ground snow load ASCE 7-22 maps here becomes 0 psf once the code's own design factors are applied.

Typical snowfall in Harrison County, MS

NOAA's 30-year normal for Harrison County: 0.2 in. of snow a year, from the GULFPORT NAVAL CTR, MS US station. (fresh vs. packed vs. ice explains why.)

What this Harrison 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.

Harrison 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.