This post explains working with Windows Azure Storage using PowerShell.
Import the Azure Module
Import-Module “C:Program Files (x86)Microsoft SDKsAzurePowerShellServiceManagementAzureAzure.psd1”
Import AzurePulishingSettingFile (How to get AzurePublishingSettingFile)
Import-AzurePublishSettingsFile C:AzureAzure_credentials_file.publishsettings