Amazon CloudWatch
User Guide

Edit a CloudWatch Alarm

You can edit an existing alarm, and update the Amazon SNS email notification list it uses.

To edit an alarm

  1. Open the CloudWatch console at

  2. In the navigation pane, choose Alarms.

  3. Select the alarm and choose Actions, Modify.

  4. On the Modify Alarm page, update the alarm as necessary and choose Save Changes. To modify the expression, metrics, period, or statistic, first choose Edit near the top of the screen.

    You cannot change the name of an existing alarm. You can change the description. Or you can copy the alarm, and give the new alarm a different name. To copy an alarm, select the alarm and then choose Actions, Copy.

To update an email notification list that was created using the Amazon SNS console

  1. Open the Amazon SNS console at

  2. In the navigation pane, choose Topics, and then select the ARN for your notification list (topic).

  3. Do one of the following:

    • To add an email address, choose Create subscription. For Protocol, choose Email. For Endpoint, type the email address of the new recipient. Choose Create subscription.

    • To remove an email address, choose the Subscription ID. Choose Other subscription actions, Delete subscriptions.

  4. Choose Publish to topic.