Form 8-K Filing

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 Exchange Act of 1934

Date of Report (Date of earliest event reported) October 19, 2011 

Westamerica Bancorporation
(Exact name of registrant as specified in its charter)


California
001-09383
94-2156203
(State or other jurisdiction
of incorporation) 		(Commission File Number) (IRS Employer Identification No.)



1108 Fifth Avenue, San Rafael, California
94901
(Address of principal executive offices) (Zip Code)

Registrant's telephone number, including area code:   (707) 863-6000



Not Applicable
(Former name or former address, if changed since last report)



Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
    [   ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
    [   ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
    [   ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
    [   ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 2.02. Results of Operations and Financial Condition.

On October 19, 2011 the Registrant issued a press release, a copy of which is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits.

    Exhibit 99.1.       Press release dated October 19, 2011

SIGNATURE

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

    Westamerica Bancorporation
(Registrant)
October 19, 2011
(Date) 		  /s/   JOHN "ROBERT" THORSON
John "Robert" Thorson
Senior Vice President and Chief Financial Officer

  Exhibit Index
  99.1 Press release dated October 19, 2011