It seems the 0x10302 event code was customized to generate a Critical alarm and then the alarm was manually cleared.
"Severity","Created On","Name","Cleared On","Event","Event Type","Created By","Cleared By","Model Type Name","Event Precedence"
"Critical","Dec 4, 2018 9:17:00 AM BRST","2960-24Almoxarifado03","Dec 4, 2018 11:50:47 AM BRST","Contact has been lost with model 2960-24Almoxarifado03 of type SwCiscoIOS.","0x10302","System","spectrum@bhz-app-spect03","SwCiscoIOS","10"
"","Dec 4, 2018 9:17:00 AM BRST","2960-24Almoxarifado03","","Alarm number 298495 with probable cause id 0x10302 generated for device 2960-24Almoxarifado03 of type SwCiscoIOS. The severity of this alarm is CRITICAL.","0x10701","System","","SwCiscoIOS","10"
"","Dec 4, 2018 11:50:47 AM BRST","2960-24Almoxarifado03","","User spectrum@bhz-app-spect03 cleared alarm number 298495 with probable cause id 0x10302 for device 2960-24Almoxarifado03 of type SwCiscoIOS.","0x10706","spectrum@bhz-app-spect03","","SwCiscoIOS","10"