SnowLoadCheck

Warren County, NC Roof Snow Load - 15 psf

What ASCE 7 says about snow load in Warren County

Moderate
15 psf

That's Warren County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. §7.3.4's low-slope minimum of 15 psf is what actually governs on a flat or low-pitch roof here - higher than the 10.5 psf the base ground-load formula gives.

Converted to something you can actually eyeball on a roof: about 33 in. of fresh powder, 12 in. once it settles and packs down, or just 3 in. if it's turned to ice. Modern-code homes carry a load like this without issue; an older addition, a carport, or any flat-roofed section is where it is worth checking first.

Warren County at a glance

Where Warren County's figure sits nationally

Out of 2,758 rated US counties, Warren County sits at #1,481, the top 54% nationally - #46 of 100 within North Carolina. 12.9 psf is North Carolina's typical county figure - Warren County beats it by 2.1 psf.

Near 36.3981°N 78.0999°W, FIPS 37185: Warren County counts 19,081 residents and a 15 psf map value, which the code's own factors turn into 15 psf.

How much it actually snows in Warren County

Most winters bring Warren County roughly 1.6 in. of snow - NOAA's normal at HENDERSON 2 NNW, NC US, 17.7 mi off. (fresh vs. packed vs. ice explains why.)

Read this before you rely on it

Warren County's number above is ASCE 7-22's default case, not a custom calculation: ordinary residential occupancy, heated, sited on ground that's neither fully sheltered nor fully exposed. Any one of those changing - pitch, exposure, heating, occupancy - moves the real figure.

Nothing here substitutes for an address-level number. Get one free, in about a minute, from the ASCE 7 Hazard Tool using your own coordinates rather than Warren County's county-wide figure. Details: the calculation guide.