SnowLoadCheck

Alfalfa County, OK Roof Snow Load - 15 psf

Alfalfa County, OK: your roof's ASCE 7 snow number, in plain English

Moderate
15 psf

Alfalfa County's roofs are built to hold 15 psf of snow, the ASCE 7-22 figure a permit reviewer checks first. §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.

In depth, not weight: that's roughly 33 inches of fresh, light snow, 12 inches of old, settled snow, or as little as 3 inches of solid ice - snow that heavy is rare here but ice from a freeze-thaw cycle adds up far faster than the depth suggests. This is a meaningful design load - most modern-code homes handle it fine, though an addition, a carport or a flat-roofed section can be a weak spot.

Got real snow on a Alfalfa County roof right now?

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Alfalfa County at a glance

Alfalfa County by the numbers

Nationally that's #1,600 out of 2,758 rated counties, the top 58%; within Oklahoma alone, Alfalfa County ranks #14 of 77. Oklahoma counties average 11 psf; Alfalfa County runs 4 psf higher than that.

Alfalfa County, FIPS 40003, is home to 5,712 people near 36.7297°N 98.3234°W. Its 15 psf ground snow load figure is the map value; 15 psf is what a roof is actually designed for.

Alfalfa County's snowfall, most winters

11.2 in. a year: that's Alfalfa County's NOAA 1991-2020 snowfall normal, measured at CHEROKEE 4W, OK US (6.2 mi away). See the density guide.

Before you rely on Alfalfa County's number

Treat the Alfalfa County figure as a starting point, not a final answer: it assumes standard occupancy, a heated structure and a moderately sheltered site, per ASCE 7-22's own defaults. Exposed terrain, an unheated building or a steeper roof all shift the real number.

For a real application, skip the county number and go straight to the ASCE 7 Hazard Tool - enter your coordinates and it returns a site-specific figure a plan reviewer will recognize. See the methodology guide.