diff --git a/topology/University of Wisconsin/CHTC/CHTC_downtime.yaml b/topology/University of Wisconsin/CHTC/CHTC_downtime.yaml
index 22d08d1f2..bb7e5a738 100644
--- a/topology/University of Wisconsin/CHTC/CHTC_downtime.yaml	
+++ b/topology/University of Wisconsin/CHTC/CHTC_downtime.yaml	
@@ -42,3 +42,14 @@
   Services:
   - CE
 # ---------------------------------------------------------
+- Class: UNSCHEDULED
+  ID: 961985988
+  Description: bringing this down until we can figure out cluster disk usage issue
+  Severity: Outage
+  StartTime: Sep 09, 2021 09:50 +0000
+  EndTime: Sep 16, 2021 09:50 +0000
+  CreatedTime: Sep 09, 2021 14:43 +0000
+  ResourceName: CHTC-canary2
+  Services:
+  - CE
+# ---------------------------------------------------------