Light

ZIP Code 98358

Jefferson County, Washington — Nordland

15PSF (Ground Snow Load)
LightClassification

What This Means

Jefferson County, Washington has a light ground snow load of 15 PSF per ASCE 7-22. At this level, most standard residential roofs are designed to handle the load without issue. However, flat or low-slope roofs should still be checked for drifting and sliding snow.

Snow Load Details

ZIP Code98358
CountyJefferson
CityNordland
StateWashington (WA)
Ground Snow Load15 PSF — Light
Classification Range1 - 20 PSF
Data QualityElevation estimated

Source: ASCE 7-22 ground snow load polygons via ArcGIS

Roof Snow Load Calculator

ASCE 7-22 flat roof formula:  pf = 0.7 × Ce × Ct × Is × pg

Your ground snow load (pg): 15 PSF

Roof Snow Load: 10.5 PSF

ⓘ Simplified estimate for flat roofs. Sloped roofs, drift zones, and unbalanced loads need additional calculations. Consult a structural engineer for final design.

Jefferson County Snow Load Map

Counties colored by snow load classification. Gray = No Load, Blue = Light, Amber = Moderate, Orange = Heavy, Red = Extreme, Purple = Case Study.

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98355 CS Case Study 98356 CS Case Study 98357 CS Case Study 98359 15 PSF Light 98360 15 PSF Light 98361 CS Case Study

Frequently Asked Questions

What is the ground snow load for ZIP code 98358?

ZIP code 98358 is in Jefferson County, Washington, with a ground snow load of 15 PSF, classified as light per ASCE 7-22.

Is my roof strong enough for snow in 98358?

With a light ground snow load of 15 PSF, standard residential construction typically handles this load, but verify with your local building code.

What county is ZIP code 98358 in?

ZIP code 98358 is in Jefferson County, Washington (WA).