TSP Name:                                  Northern Natural Gas Company
TSP:                                       784158214
Notice ID:                                 109845
Notice Type:                               Computer System Status
Subject:                                   UPDATE 1: BUSINESS APPLICATIONS INTERRUPTION
Critical:                                  N
Post Date/Time:                            07/23/2026 11:35 AM
Notice Status:                             Terminate
Prior Notice:                              109842
For Gas Day(s):                            07/23/2026
Notice Effective Date/Time:                07/23/2026 11:30 AM
Notice End Date/Time:                      07/23/2026 02:39 PM
Required Response Indicator Description:   5-No response required

Notice Text: 

  
    
Update 1: 

While intermittent service interruptions
continue, customers may be able to access the Throughput Management System
(TMS) through a mobile device. If successful, Northern recommends using the
mobile version of TMS for an improved user experience until service is
restored.

Original Notice:Northern is experiencing intermittent
service interruptions limiting access to its business applications, including
the Throughput Management System (TMS), Capacity Release System, Flowing Gas,
and ODI. The cause of the outage has been identified as an issue with Microsoft.
Northern's IT department is working with Microsoft to remedy the service
interruption. The timing of when service will be restored is currently unknown.Northern regrets any inconvenience this may
cause and, if necessary, will extend the Timely nomination cycle deadline for
Gas Day Friday, July 24, 2026, to provide customers with additional time to
complete their nominations.An update will be provided once system
availability is restored.If you have any
questions, contact your marketing or customer service representative.