Yes you can, edit searchwidget.html and follow the instruction to change the form pointing to your store locator in this html file.

Here’s a demo https://superstorefinder.net/demo/boxsearch/searchwidget.html

Download Code

You can pass the parameter below to your store locator page

https://yourwebsite.com/storelocator/?location=New York

or

https://yourwebsite.com/storelocator/?lat=40.730610&lng=-73.935242

Video guide: https://youtu.be/SXM6hdKQTTs