diff --git a/operations/mimir-mixin-compiled-baremetal/alerts.yaml b/operations/mimir-mixin-compiled-baremetal/alerts.yaml
index d4776cf7c22..94b47aa2d26 100644
--- a/operations/mimir-mixin-compiled-baremetal/alerts.yaml
+++ b/operations/mimir-mixin-compiled-baremetal/alerts.yaml
@@ -1155,18 +1155,36 @@ groups:
             runbook_url: https://grafana.com/docs/mimir/latest/operators-guide/mimir-runbooks/#mimirblockbuildernocycleprocessing
           expr: |
             max by(cluster, namespace, instance) (histogram_count(increase(cortex_blockbuilder_consume_cycle_duration_seconds[60m]))) == 0
-          for: 5m
+          for: 10m
           labels:
             severity: warning
+        - alert: MimirBlockBuilderNoCycleProcessing
+          annotations:
+            message: Mimir {{ $labels.instance }} in {{ $labels.cluster }}/{{ $labels.namespace }} has not processed cycles in the past hour.
+            runbook_url: https://grafana.com/docs/mimir/latest/operators-guide/mimir-runbooks/#mimirblockbuildernocycleprocessing
+          expr: |
+            max by(cluster, namespace, instance) (histogram_count(increase(cortex_blockbuilder_consume_cycle_duration_seconds[60m]))) == 0
+          for: 20m
+          labels:
+            severity: critical
         - alert: MimirBlockBuilderLagging
           annotations:
-            message: Mimir {{ $labels.instance }} in {{ $labels.cluster }}/{{ $labels.namespace }} reports partition lag of {{ printf "%.2f" $value }}%.
+            message: Mimir {{ $labels.instance }} in {{ $labels.cluster }}/{{ $labels.namespace }} reports partition lag of {{ printf "%.2f" $value }}.
             runbook_url: https://grafana.com/docs/mimir/latest/operators-guide/mimir-runbooks/#mimirblockbuilderlagging
           expr: |
             max by(cluster, namespace, instance) (max_over_time(cortex_blockbuilder_consumer_lag_records[10m])) > 4e6
           for: 75m
           labels:
             severity: warning
+        - alert: MimirBlockBuilderLagging
+          annotations:
+            message: Mimir {{ $labels.instance }} in {{ $labels.cluster }}/{{ $labels.namespace }} reports partition lag of {{ printf "%.2f" $value }}.
+            runbook_url: https://grafana.com/docs/mimir/latest/operators-guide/mimir-runbooks/#mimirblockbuilderlagging
+          expr: |
+            max by(cluster, namespace, instance) (max_over_time(cortex_blockbuilder_consumer_lag_records[10m])) > 4e6
+          for: 140m
+          labels:
+            severity: critical
         - alert: MimirBlockBuilderCompactAndUploadFailed
           annotations:
             message: Mimir {{ $labels.instance }} in {{ $labels.cluster }}/{{ $labels.namespace }} fails to compact and upload blocks.
@@ -1175,7 +1193,7 @@ groups:
             sum by (cluster, namespace, instance) (rate(cortex_blockbuilder_tsdb_compact_and_upload_failed_total[1m])) > 0
           for: 5m
           labels:
-            severity: warning
+            severity: critical
     - name: mimir_continuous_test
       rules:
         - alert: MimirContinuousTestNotRunningOnWrites
diff --git a/operations/mimir-mixin-compiled/alerts.yaml b/operations/mimir-mixin-compiled/alerts.yaml
index 275dd27111d..78873bccec6 100644
--- a/operations/mimir-mixin-compiled/alerts.yaml
+++ b/operations/mimir-mixin-compiled/alerts.yaml
@@ -1169,18 +1169,36 @@ groups:
             runbook_url: https://grafana.com/docs/mimir/latest/operators-guide/mimir-runbooks/#mimirblockbuildernocycleprocessing
           expr: |
             max by(cluster, namespace, pod) (histogram_count(increase(cortex_blockbuilder_consume_cycle_duration_seconds[60m]))) == 0
-          for: 5m
+          for: 10m
           labels:
             severity: warning
+        - alert: MimirBlockBuilderNoCycleProcessing
+          annotations:
+            message: Mimir {{ $labels.pod }} in {{ $labels.cluster }}/{{ $labels.namespace }} has not processed cycles in the past hour.
+            runbook_url: https://grafana.com/docs/mimir/latest/operators-guide/mimir-runbooks/#mimirblockbuildernocycleprocessing
+          expr: |
+            max by(cluster, namespace, pod) (histogram_count(increase(cortex_blockbuilder_consume_cycle_duration_seconds[60m]))) == 0
+          for: 20m
+          labels:
+            severity: critical
         - alert: MimirBlockBuilderLagging
           annotations:
-            message: Mimir {{ $labels.pod }} in {{ $labels.cluster }}/{{ $labels.namespace }} reports partition lag of {{ printf "%.2f" $value }}%.
+            message: Mimir {{ $labels.pod }} in {{ $labels.cluster }}/{{ $labels.namespace }} reports partition lag of {{ printf "%.2f" $value }}.
             runbook_url: https://grafana.com/docs/mimir/latest/operators-guide/mimir-runbooks/#mimirblockbuilderlagging
           expr: |
             max by(cluster, namespace, pod) (max_over_time(cortex_blockbuilder_consumer_lag_records[10m])) > 4e6
           for: 75m
           labels:
             severity: warning
+        - alert: MimirBlockBuilderLagging
+          annotations:
+            message: Mimir {{ $labels.pod }} in {{ $labels.cluster }}/{{ $labels.namespace }} reports partition lag of {{ printf "%.2f" $value }}.
+            runbook_url: https://grafana.com/docs/mimir/latest/operators-guide/mimir-runbooks/#mimirblockbuilderlagging
+          expr: |
+            max by(cluster, namespace, pod) (max_over_time(cortex_blockbuilder_consumer_lag_records[10m])) > 4e6
+          for: 140m
+          labels:
+            severity: critical
         - alert: MimirBlockBuilderCompactAndUploadFailed
           annotations:
             message: Mimir {{ $labels.pod }} in {{ $labels.cluster }}/{{ $labels.namespace }} fails to compact and upload blocks.
@@ -1189,7 +1207,7 @@ groups:
             sum by (cluster, namespace, pod) (rate(cortex_blockbuilder_tsdb_compact_and_upload_failed_total[1m])) > 0
           for: 5m
           labels:
-            severity: warning
+            severity: critical
     - name: mimir_continuous_test
       rules:
         - alert: MimirContinuousTestNotRunningOnWrites
diff --git a/operations/mimir-mixin/alerts/ingest-storage.libsonnet b/operations/mimir-mixin/alerts/ingest-storage.libsonnet
index b223a0514b7..e920f6fcf50 100644
--- a/operations/mimir-mixin/alerts/ingest-storage.libsonnet
+++ b/operations/mimir-mixin/alerts/ingest-storage.libsonnet
@@ -230,7 +230,7 @@
         // Alert if block-builder didn't process cycles in the past hour.
         {
           alert: $.alertName('BlockBuilderNoCycleProcessing'),
-          'for': '5m',
+          'for': '10m',
           expr: |||
             max by(%(alert_aggregation_labels)s, %(per_instance_label)s) (histogram_count(increase(cortex_blockbuilder_consume_cycle_duration_seconds[60m]))) == 0
           ||| % $._config,
@@ -241,6 +241,19 @@
             message: '%(product)s {{ $labels.%(per_instance_label)s }} in %(alert_aggregation_variables)s has not processed cycles in the past hour.' % $._config,
           },
         },
+        {
+          alert: $.alertName('BlockBuilderNoCycleProcessing'),
+          'for': '20m',
+          expr: |||
+            max by(%(alert_aggregation_labels)s, %(per_instance_label)s) (histogram_count(increase(cortex_blockbuilder_consume_cycle_duration_seconds[60m]))) == 0
+          ||| % $._config,
+          labels: {
+            severity: 'critical',
+          },
+          annotations: {
+            message: '%(product)s {{ $labels.%(per_instance_label)s }} in %(alert_aggregation_variables)s has not processed cycles in the past hour.' % $._config,
+          },
+        },
 
         // Alert if block-builder per partition lag is higher than the threshhold.
         // The value of the threshhold is arbitary large for now. We will reconsider this alert after we get the block-builder-scheduler.
@@ -255,7 +268,20 @@
             severity: 'warning',
           },
           annotations: {
-            message: '%(product)s {{ $labels.%(per_instance_label)s }} in %(alert_aggregation_variables)s reports partition lag of {{ printf "%%.2f" $value }}%%.' % $._config,
+            message: '%(product)s {{ $labels.%(per_instance_label)s }} in %(alert_aggregation_variables)s reports partition lag of {{ printf "%%.2f" $value }}.' % $._config,
+          },
+        },
+        {
+          alert: $.alertName('BlockBuilderLagging'),
+          'for': '140m',  // 2h20m. Indicating the lag did not come down for ~2 consumption cycles.
+          expr: |||
+            max by(%(alert_aggregation_labels)s, %(per_instance_label)s) (max_over_time(cortex_blockbuilder_consumer_lag_records[10m])) > 4e6
+          ||| % $._config,
+          labels: {
+            severity: 'critical',
+          },
+          annotations: {
+            message: '%(product)s {{ $labels.%(per_instance_label)s }} in %(alert_aggregation_variables)s reports partition lag of {{ printf "%%.2f" $value }}.' % $._config,
           },
         },
 
@@ -267,7 +293,7 @@
             sum by (%(alert_aggregation_labels)s, %(per_instance_label)s) (rate(cortex_blockbuilder_tsdb_compact_and_upload_failed_total[1m])) > 0
           ||| % $._config,
           labels: {
-            severity: 'warning',
+            severity: 'critical',
           },
           annotations: {
             message: '%(product)s {{ $labels.%(per_instance_label)s }} in %(alert_aggregation_variables)s fails to compact and upload blocks.' % $._config,