SnowLoadCheck

Vernon County, MO Roof Snow Load - 20 psf

What ASCE 7 says about snow load in Vernon County

Moderate
20 psf

That's Vernon County's design roof snow load per ASCE 7-22, for a typical heated single-family home - the number a permit reviewer starts from. The physics-based figure alone would be 14 psf, but ASCE 7's own low-slope minimum (§7.3.4) sets a floor of 20 psf for flat and low-pitch roofs here, which is the number that actually governs.

Converted to something you can actually eyeball on a roof: about 44 in. of fresh powder, 16 in. once it settles and packs down, or just 4 in. if it's turned to ice. A meaningful design load. Most homes built to modern code handle it, but additions, carports, and flat-roofed sections are worth a second look.

Already snow on the roof in Vernon County?

in. of

Vernon County in numbers

Where Vernon County's figure sits nationally

Out of 2,758 rated US counties, Vernon County sits at #963, the top 35% nationally - #41 of 115 within Missouri. Missouri counties average 18.6 psf; Vernon County runs 1.4 psf higher than that.

Near 37.8502°N 94.3417°W, FIPS 29217: Vernon County counts 19,787 residents and a 20 psf map value, which the code's own factors turn into 20 psf.

How much it actually snows in Vernon County

Most winters bring Vernon County roughly 7.3 in. of snow - NOAA's normal at LAMAR 7N, MO US, 17.7 mi off. (fresh vs. packed vs. ice explains why.)

Read this before you rely on it

Vernon 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 Vernon County's county-wide figure. See the methodology guide.