Hi @Ravi Bhushan ,
The following script should get what you're looking for:
Get-SCOMAlert | Format-Table Name, Description, Id, TimeRaised
You may also want to export it to a CSV to make it easier to read:
Get-SCOMAlert | select Name, Description, Id, TimeRaised | Export-Csv -Path C:\Temp\SCOMAlerts.csv -NoTypeInformation
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Best regards,
Leon