Green County, KY Roof Snow Load - 15 psf
Green County, KY: your roof's ASCE 7 snow number, in plain English
Green 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. A meaningful design load. Most homes built to modern code handle it, but additions, carports, and flat-roofed sections are worth a second look.
Green County, KY: quick facts
- Design roof snow load15 psf
- Ground snow load, ASCE 7 map15 psf
- National rank#1,539 of 2,758
- Kentucky rank#96 of 120
- Population11,552
- Annual snowfall, NOAA normal5.7 in.
- FIPS21087
Green County by the numbers
Nationally that's #1,539 out of 2,758 rated counties, the top 56%; within Kentucky alone, Green County ranks #96 of 120. That's 0.7 psf below Kentucky's own county-average design load of 15.7 psf.
Green County, FIPS 21087, is home to 11,552 people near 37.2781°N 85.5379°W. Its 15 psf ground snow load figure is the map value; 15 psf is what a roof is actually designed for.
Green County's snowfall, most winters
5.7 in. a year: that's Green County's NOAA 1991-2020 snowfall normal, measured at GLASGOW, KY US (27.9 mi away). 27.9 mi is a real gap between Green County and its nearest reporting station, so local snowfall can diverge from this figure, especially near elevation changes. See the density guide.
Before you rely on Green County's number
Treat the Green 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. (How this figure is calculated.)