Seminole County, OK Roof Snow Load - 10 psf
What ASCE 7 says about snow load in Seminole County
That's Seminole 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 7 psf, but ASCE 7's own low-slope minimum (§7.3.4) sets a floor of 10 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 22 in. of fresh powder, 8 in. once it settles and packs down, or just 2 in. if it's turned to ice. This is a modest add-on to standard roof loading - ordinary residential construction carries it without extra bracing.
Got real snow on a Seminole County roof right now?
Seminole County, OK: quick facts
- Design roof snow load10 psf
- Ground snow load, ASCE 7 map10 psf
- National rank#1,887 of 2,758
- Oklahoma rank#50 of 77
- Population23,351
- Annual snowfall, NOAA normal3.6 in.
- FIPS40133
Where Seminole County's figure sits nationally
Out of 2,758 rated US counties, Seminole County sits at #1,887, the top 68% nationally - #50 of 77 within Oklahoma. 11 psf is Oklahoma's typical county figure - Seminole County comes in 1 psf under it.
Near 35.1584°N 96.6029°W, FIPS 40133: Seminole County counts 23,351 residents and a 10 psf map value, which the code's own factors turn into 10 psf.
How much it actually snows in Seminole County
Most winters bring Seminole County roughly 3.6 in. of snow - NOAA's normal at WEWOKA 3 SW, OK US, 4.1 mi off. (fresh vs. packed vs. ice explains why.)
Read this before you rely on it
Seminole 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 Seminole County's county-wide figure. Details: the calculation guide.