November 1, 2016 El Portal Road (continuation of Highway 140 into Yosemite) Rockfall

October 20, 2017 - With wet winter weather just around the corner, drivers are reminded of the greater likelihood of encountering rock debris on park roads during wet weather.  Although rockfalls are always possible along all park roadways, they tend to happen more often during winter storms. The area affected by the June 12, 2017 rockfall at Parkline Slab (downhill of Dog Rock) may be particularly prone to storm-triggered rockfalls, as there is abundant loose debris on the bedrock slope above the road that is likely to be mobilized by significant rainfall.

Those driving the El Portal Road should be especially vigilant for rock debris below Parkline Slab during or immediately after rainstorms, and be aware that road closures may occur in response to these storms.

If you encounter small rock debris on the road, drive through the area (do not stop within the debris) and promptly report it to Park Dispatch.  Do not attempt to remove the debris yourself – leave that task to road crews equipped to do so safely. If you encounter large rock debris on the road, turn around and promptly report it to Park Dispatch. 
Source: G. Stock, NPS