St. Bernard Parish, LA Roof Snow Load - 0 psf

How much snow is too much for a roof in St. Bernard Parish, LA?

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.

St. Bernard Parish, LA: quick facts

• Design roof snow load0 psf
• Ground snow load, ASCE 7 map0 psf
• National rank#2,621 of 2,758
• Louisiana rank#50 of 64
• Population44,783
• Annual snowfall, NOAA normal0.2 in.
• FIPS22087

How St. Bernard Parish compares

0 psf ranks #2,621 of 2,758 US counties with a mapped snow load (top 95%) - and #50 of 64 in Louisiana. Louisiana counties average 2.4 psf; St. Bernard Parish runs 2.4 psf lower than that.

Population 44,783 (FIPS 22087), roughly 29.9181°N 89.2635°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 St. Bernard Parish, LA

NOAA's 30-year normal for St. Bernard Parish: 0.2 in. of snow a year, from the GULFPORT NAVAL CTR, MS US station. That station is far enough away (32.8 mi) that local snowfall - especially at a different elevation or near a lake - can run noticeably higher or lower than this figure. (fresh vs. packed vs. ice explains why.)

What this St. Bernard Parish 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.

St. Bernard Parish'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. (How this figure is calculated.)