diff --git a/doc/man/man1/squeue.1 b/doc/man/man1/squeue.1
index c90d1163e671f6ee32b1962f32c19a0abf8f9f4c..3d37b56057c350dc78610e39c701b35ee3f98893 100644
--- a/doc/man/man1/squeue.1
+++ b/doc/man/man1/squeue.1
@@ -1061,6 +1061,11 @@ The job's QOS has reached its time limit.
 .TP
 \fBReqNodeNotAvail\fR
 Some node specifically required by the job is not currently available.
+The node may currently be in use, reserved for another job, in an advanced
+reservation, DOWN, DRAINED, or not responding.
+Nodes which are DOWN, DRAINED, or not responding will be identified as part
+of the job's "reason" field as "UnavailableNodes". Such nodes will typically
+require the intervention of a system administrator to make available.
 .TP
 \fBReservation\fR
 The job is waiting its advanced reservation to become available.