> SO the TH will not be closed: just that section intermittently?
Inyo is NOT issuing any permits to enter the Whitneyzone from Whitney Portal on those days. So people could legally day hike up to Lone Pine Lake, but that is all, since a permit is not required to go that far.
Unfortunately, this will prevent legal day hike access to the North Fork Lone Pine Creek (The Mountaineers Route), even though hikers could summit and return on that route without ever encountering the Main Trail.