diff --git a/_data/rules.yml b/_data/rules.yml
index c2d86c8..c5873b4 100644
--- a/_data/rules.yml
+++ b/_data/rules.yml
@@ -300,6 +300,10 @@ services:
             description: Volume is almost full (< 10% left)
             query: 'kubelet_volume_stats_available_bytes / kubelet_volume_stats_capacity_bytes * 100 < 10'
             severity: warning
+          - name: Volume full in four days
+            description: "{{ $labels.namespace }}/{{ $labels.persistentvolumeclaim }} is expected to fill up within four days. Currently {{ printf '%0.2f' $value }}% is available."
+            query: '100 * (kubelet_volume_stats_available_bytes / kubelet_volume_stats_capacity_bytes) < 15 and predict_linear(kubelet_volume_stats_available_bytes[6h], 4 * 24 * 3600) < 0'
+            severity: critical
 
   - name: Nomad
     exporters: