&gt;  For a newbie in this domain, how do we start doing our own toy forecasts (lets say for Bay area)?<p>There are some available weather modeling packages, such as WRF[0], as a mesoscale (few km to 1000 kms) model, that one can download and run. You&#x27;d obviously need to find a resource for the appropriate input data. I don&#x27;t know how easy it is to get up and running, though.<p>[0] <a href="http:&#x2F;&#x2F;www.wrf-model.org&#x2F;index.php" rel="nofollow">http:&#x2F;&#x2F;www.wrf-model.org&#x2F;index.php</a>