UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                            ------------------------

                                    FORM 8-K

                                 CURRENT REPORT

                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                       SECURITIES AND EXCHANGE ACT OF 1934

                DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED)

                                 SEPTEMBER 20, 2002

                            ------------------------

                            NORTHWESTERN CORPORATION
               (Exact name of registrant as specified in charter)

                                    DELAWARE
                                    --------
                 (State or other jurisdiction of incorporation)

            0-692                                      46-0172280
            -----                                      ----------
   (Commission File Number)               (IRS Employer Identification Number)

                 125 SOUTH DAKOTA AVENUE, SIOUX FALLS, SD 57104
                 ----------------------------------------------
              (Address of registrant's principal executive office)

       Registrant's telephone number, including area code: (605) 978-2908
                                                           --------------

                                 NOT APPLICABLE
         ---------------------------------------------------------------
          (Former Name or Former Address, if Changed Since Last Report)









ITEM 5.  OTHER EVENTS


         NorthWestern Corporation (NorthWestern) announced that its new
independent public accountants, Deloitte & Touche LLP (D&T), have completed the
re-audit of NorthWestern's 2001 financial statements that were originally
audited by Arthur Andersen LLP. The re-audited financial statements, including
the report of D&T, are attached as Exhibit 99.1 to this Form 8-K. NorthWestern
issued a press release to announce the re-audit of its 2001 financial
statements, which is included in Exhibit 99.2.









                 SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

         On one or more occasions, we may make statements regarding our
assumptions, projections, expectations, targets, intentions or beliefs about
future events. All statements other than statements of historical facts included
or incorporated by reference in this Current Report on Form 8-K, including,
without limitation, the statements incorporated herein by reference to the
Annual Report on Form 10-K for the year ended December 31, 2001 of Northwestern
Energy, L.L.C. relating to expectations of future financial performance,
continued growth, changes in economic conditions or capital markets and changes
in customer usage patterns and preferences, are forward-looking statements
within the meaning of Section 27A of the Securities Act of 1933 and Section 21E
of the Securities Exchange Act of 1934.

         Words or phrases such as "anticipates," "believes," "estimates,"
"expects," "intends," "plans," "predicts," "projects," "targets," "will likely
result," "will continue" or similar expressions identify forward-looking
statements. Forward-looking statements involve risks and uncertainties which
could cause actual results or outcomes to differ materially from those
expressed. We caution that while we make such statements in good faith and we
believe such statements are based on reasonable assumptions, including without
limitation, management's examination of historical operating trends, data
contained in records and other data available from third parties, we cannot
assure you that our projections will be achieved.

         In addition to other factors and matters discussed elsewhere in our
quarterly, annual and current reports that we file with the Securities and
Exchange Commission, or SEC, some important factors that could cause actual
results or outcomes for NorthWestern to differ materially from those discussed
in forward-looking statements include:

         -  the adverse impact of weather conditions and seasonal fluctuations;

         -  unscheduled generation outages, maintenance or repairs;

         - unanticipated changes to fossil fuel or gas supply costs or
availability due to higher demand, shortages, transportation problems or other
developments;

         - developments in the federal and state regulatory environment and the
terms associated with obtaining regulatory approvals and rate orders;

         - costs associated with environmental liabilities and compliance with
environmental laws;

         - the rate of growth and economic conditions in our service territories
and those of our subsidiaries;

         - the speed and degree to which competition enters the industries and
markets in which our businesses operate;

         - the timing and extent of changes in interest rates and fluctuations
in energy-related commodity prices;

         - risks associated with acquisitions, transition and integration of
acquired companies, including NorthWestern Energy, L.L.C. and the Growing and
Emerging Markets division of Lucent Technologies, Inc., and the implementation
of information systems and realization of efficiencies in excess of any related
restructuring charges;

         - a lack of minority interest basis, which would require us to
recognize an increased share of operating losses at certain of our subsidiaries;

         -  our ability to recover transition costs;

         - disallowance by the Montana Public Service Commission of the recovery
of the costs incurred in entering into our default supply portfolio contracts
while we are required to act as the "default supplier; "

         - disruptions and adverse effects in the capital market due to the
changing economic environment;

         - our credit ratings with S&P, Moody's and Fitch;

         - potential delays in financings or SEC filings because we changed
auditors;




         - our substantial indebtedness, which could limit our operating
flexibility or ability to borrow additional funds;

         - our ability to obtain additional capital to refinance our
indebtedness that is scheduled to mature and for working capital purposes;

         - changes in customer usage patterns and preferences;

         - possible future actions and developments at CornerStone Propane
Partners, L.P.; and

         - changing conditions in the economy and capital markets and other
factors identified from time to time in our filings with the SEC.

         Any forward-looking statement speaks only as of the date on which such
statement is made, and, except as required by law, we undertake no obligation to
update any forward-looking statement to reflect events or circumstances after
the date on which such statement is made or to reflect the occurrence of
unanticipated events. New factors emerge from time to time and it is not
possible for management to predict all such factors.









ITEM 7.  FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS
(c)      EXHIBITS





EXHIBIT
NUMBER            TITLE
- ------            -----

               
 23.1*            Consent of Independent Accountants - Deloitte & Touche LLP

 99.1*            Report of Independent Public Accountants
                  Consolidated Statements of Income
                  Consolidated Statements of Cash Flows
                  Consolidated Balance Sheets
                  Consolidated Statements of Shareholders' Equity
                  Notes to Consolidated Financial Statements

 99.2*            Press release issued by NorthWestern Corporation



- ----------------

*  Filed herewith.








                                   SIGNATURES

Pursuant to the requirements of the Securities and Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                            NorthWestern Corp.
                                            (Registrant)


                                            BY: /s/ Kipp D. Orme
                                                ----------------------------
                                                Kipp D. Orme
                                                Vice President--Finance and
                                                Chief Executive Officer

September 20, 2002










                                  EXHIBIT INDEX




EXHIBIT
NUMBER            TITLE
- ------            -----

              
 23.1*            Consent of Independent Accountants - Deloitte & Touche LLP

 99.1*            Report of Independent Public Accountants
                  Consolidated Statements of Income
                  Consolidated Statements of Cash Flows
                  Consolidated Balance Sheets
                  Consolidated Statements of Shareholders' Equity
                  Notes to Consolidated Financial Statements

 99.2*            Press release issued by NorthWestern Corporation


- ----------------

*  Filed herewith.