NM 4, which was closed for a couple of hours Thursday because rock and mudslides in the area, reopened around 5:30 p.m., said Phil Taylor of the Office of Emergency Management.
The road was closed by the 501 intersection, which was the back gate to the Los Alamos National Laboratory. The road was closed in both directions heading to and out of the Jemez Mountains.
Earlier in the day, NM 501 was closed when a thunderstorm rolling through the area caused some flooding with debris on the roadway on West Jemez (NM 501) at Water Canyon at mile marker 2.
The road was closed west bound but by 3:30 p.m. crews were letting cars through that were traveling east bound on 501 and a few minutes later, the road was reopened in both directions.