Jackson County, MS Roof Snow Load - 0 psf
Jackson County, MS roof snow load, translated
A typical heated home in Jackson County is designed to carry 0 pounds per square foot of snow on its roof, per ASCE 7-22.
On a roof that means 0 in. of fresh snow, 0 in. once it packs down, or 0 in. of solid ice - three very different piles for the same load. Snow load is not a factor in roof design here at all; the ground snow load figure maps to zero.
Snow on Jackson County's roofs right now?
Jackson County at a glance
- Design roof snow load0 psf
- Ground snow load, ASCE 7 map0 psf
- National rank#2,563 of 2,758
- Mississippi rank#74 of 82
- Population147,002
- Annual snowfall, NOAA normal0.1 in.
- FIPS28059
Where Jackson County ranks
#74 of 82 Mississippi counties by design load, top 93% of 2,758 nationally - that's Jackson County's spot. Mississippi counties average 6.5 psf; Jackson County runs 6.5 psf lower than that.
FIPS 28059, population 147,002, centered near 30.456°N 88.6251°W. ASCE 7's underlying ground snow load here is 0 psf before the code's exposure and importance factors bring it to the 0 psf design figure above.
Jackson County: average annual snowfall
Jackson County sees about 0.1 in. of snow most winters, per the VANCLEAVE, MS US station's 1991-2020 NOAA normal. See the density guide.
Read this before you use Jackson 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. Details: the calculation guide.