# Spike Alert **URL:** \ **Category:** Elasticsearch\ **Created:** [September 4, 2019, 1:33pm UTC](https://discuss.elastic.co/t/spike-alert/198055 "2019-09-04T13:33:16Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Arnav\_Bose](https://avatars.discourse-cdn.com/v4/letter/a/ce73a5/32.png) [@Arnav\_Bose](https://discuss.elastic.co/u/Arnav_Bose)\ **Post date:** [September 4, 2019, 1:33pm UTC](https://discuss.elastic.co/t/spike-alert/198055/1 "2019-09-04T13:33:16Z")
I have worked on Elast alert with Spike before but generally I have worked on spike\_type as "Up". So I would put the spike\_ height as 5 meaning that if the current value is 5 times more than the threshold, it should trigger an alert and it works. Now, i want to trigger an alert for spike\_type "down" and in this case I am not sure what the spike\_height should be. I want to check if the number of logs have been reduced to half it's original value (if the threshold count is 10 logs, and if current logs are 5 or less). Not sure the spike\_height should be "0.5" or should it be 2 only. Has anybody used Spike elast alert for "down" spike type? ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [September 7, 2019, 10:58am UTC](https://discuss.elastic.co/t/spike-alert/198055/2 "2019-09-07T10:58:18Z")
I suspect you might have a better chance of getting a response if you ask the Elastalert community. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [October 5, 2019, 10:58am UTC](https://discuss.elastic.co/t/spike-alert/198055/3 "2019-10-05T10:58:20Z")
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