Jefferson Parish, LA Roof Snow Load - 0 psf

How much snow is too much for a roof in Jefferson 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.

Jefferson Parish at a glance

• Design roof snow load0 psf
• Ground snow load, ASCE 7 map0 psf
• National rank#2,520 of 2,758
• Louisiana rank#33 of 64
• Population427,253
• Annual snowfall, NOAA normal0 in.
• FIPS22051

How Jefferson Parish compares

0 psf ranks #2,520 of 2,758 US counties with a mapped snow load (top 91%) - and #33 of 64 in Louisiana. Louisiana counties average 2.4 psf; Jefferson Parish runs 2.4 psf lower than that.

Population 427,253 (FIPS 22051), roughly 29.5033°N 90.0362°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 Jefferson Parish, LA

NOAA's 30-year normal for Jefferson Parish: 0 in. of snow a year, from the LSU CITRUS RSCH STN, LA US station. (fresh vs. packed vs. ice explains why.)

What this Jefferson 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.

Jefferson 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. Details: the calculation guide.