diff --git a/operations/alerts.md b/operations/alerts.md
new file mode 100644
index 0000000..da9d7b1
--- /dev/null
+++ b/operations/alerts.md
@@ -0,0 +1,37 @@
+---
+id: alerts
+title: "Alerts"
+---
+
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one
+  ~ or more contributor license agreements.  See the NOTICE file
+  ~ distributed with this work for additional information
+  ~ regarding copyright ownership.  The ASF licenses this file
+  ~ to you under the Apache License, Version 2.0 (the
+  ~ "License"); you may not use this file except in compliance
+  ~ with the License.  You may obtain a copy of the License at
+  ~
+  ~   http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing,
+  ~ software distributed under the License is distributed on an
+  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  ~ KIND, either express or implied.  See the License for the
+  ~ specific language governing permissions and limitations
+  ~ under the License.
+  -->
+
+
+Druid generates alerts on getting into unexpected situations.
+
+Alerts are emitted as JSON objects to a runtime log file or over HTTP (to a service such as Apache Kafka). Alert emission is disabled by default.
+
+All Druid alerts share a common set of fields:
+
+* `timestamp` - the time the alert was created
+* `service` - the service name that emitted the alert
+* `host` - the host name that emitted the alert
+* `severity` - severity of the alert e.g. anomaly, component-failure, service-failure etc.
+* `description` - a description of the alert
+* `data` - if there was an exception then a JSON object with fields `exceptionType`, `exceptionMessage` and `exceptionStackTrace`