South Fork Thunder Falls is a waterfall on South Fork Thunder Creek in Skagit County, Washington, in the North Cascades region. It lies about 23.4 miles north of Darrington and roughly 39.7 miles east of Bellingham as the crow flies.
Its height has not been recorded in the source data.
The North Cascades are a wilderness of jagged peaks, glaciers and deep, forested valleys of western hemlock, silver fir and Douglas fir, with some of the heaviest snowfall in the country. Meltwater from glaciers and snowfields pours down thousands of feet of cliffs in countless cascades and horsetail falls.
Skagit County holds 178 recorded waterfalls, and several are close by. Waterfall 23 mi N of Darrington, is under a mile away. Waterfall 22.6 mi N of Darrington, is under a mile away. Survey Creek Falls, is about 1.7 miles away.
South Fork Thunder Falls is located at 48.5919° N, 121.6557° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The exact position has not yet been verified on aerial imagery, so treat the map pin as approximate. Details on trails, parking and access have not been documented for this waterfall yet.