scrape.js

var cities = ["Albuquerque","Austin","Baltimore","Boston","Charlotte","Chicago","Columbus","Dallas","Denver","Detroit","El Paso","Fairbanks","Fort Worth","Fresno","Houston","Indianapolis","Jacksonville","Kansas City","Las Vegas","Long Beach","Los Angeles","Louisville","Memphis","Mesa","Milwaukee","Nashville","New York","Oklahoma City","Philadelphia","Phoenix","Portland","Sacramento","San Antonio","San Diego","San Francisco","San Jose","Seattle","Tucson","Washington"];

var output = {};

var http = require('http');
var fs = require('fs');

var download = function(url, dest, cb) {
  var file = fs.createWriteStream(dest);
  var request = http.get(url, function(response) {
    response.pipe(file);
    file.on('finish', function() {
      file.close();
      cb();
    });
  });
};

cities.forEach(function(d){
	download("http://joannaskao.com/projects/whitechristmas/data/"+encodeURIComponent(d)+"-min.json","data/"+d.replace(" ","_")+".json",function(){
		console.log("Downloaded "+d);
	});
})