Viewing profile — thegrossman

I've been working on a weather Watch app (Dark Sky: http://blog.forecast.io/dark-sky-for-apple-watch/ ). The WatchKit SDK can seem almost frustratingly limited at times, but I thin…

The API is going to be a big priority for us going forward. We have some new development planned on that front, and AI will be able to help us out tremendously.

There's a toggle on the top right, in the blue bar.

Dark Sky is kind of an expensive app, as apps go: $3.99. Which means we have a small percentage of the market, giving it a very different growth curve from free apps. Our rate of r…

Heh, the check's already in the bank. What can they do to us now? (Just kidding. I actually ran the post by them and they had no issues at all -- I'm honestly not sure what I would…

When we compare it to RTMA, we leave out RTMA from the list of data sources. Likewise, eventually I'd like to do the same with a subset of the ground stations we use. (The problem …

Oops, it should read centikelvin. Fixed! Thanks.

Also: Validation is tricky, since we can't just compare the output to ground station observations, as we incorporate ground station data into the model. Eventually I want to genera…

"Real-time" is the key. As far as we know, there isn't another real-time global data product that is this high resolution. And while we actually use MODIS data as an input to our t…

Thank MapBox. If it were up to me, I'd do something funky like a blackbody-esque color palette and then get yelled at because it'd be hard to read. :-)

The color palette adjusts based on the zoom level in order to improve contrast. Roughly a bazillion people pointed out that it's "broken", so I guess that was a dumb call on my par…

We did, but they didn't work quite as well. But that could absolutely be my lack of experience with how best to normalize and format the input vectors. In the end, NNs seemed less …

Also, correct me if I'm wrong (and I very well could be), but the most egregious noise -- the giant Bagel Blobs -- aren't insect reflections, but rather night-time temperature inve…

The color palette of the images in the blog post was adjusted to highlight areas of precipitation at the expense of intensity discrimination. Dark Sky itself uses a wider range, bu…

Dual pol wasn't deployed when we first started Dark Sky. Now that it's becoming available, it's definitely going to make our job a lot easier! Not knowing much about it, though, it…

Exactly. Those enormous Bagel Blobs tend to occur after the sun goes down (and only in the warmer months. Two months ago, they weren't there). The image was generated around 10:30 …

Seeing this on HN, I realize I didn't go into a lot of technical detail in the blog post (we still aren't quite sure who our audience is with the Forecast blog). So if anyone has a…

We chose it for forecast.io because of the input/output connotation. It is a concise way to imply "data service". .io also allows us to use a short descriptive domain name. If we w…

The top layer of our backend is node.js running behind nginx. We use redis for storage, along with a bunch of flat files for certain things. Under that is a mostly ruby / mysql lay…

Oops! That'll be fixed and pushed this afternoon. One of the huge advantages of this being a mobile web app rather than a native app is we don't have to wait more than a week for b…

At forecast.io, we use the GFS and NAM as two of our models (among others). More info on our data sources here: http://forecast.io/raw/

We just built it with a bunch of hand-coded HTML, CSS and JS. No fancy framework or anything.

Yeah yeah. We totally alienated a bunch of non-Americans by not having that in there. We'll add it!

We just pull in a bunch of raw weather data from a bunch of sources. Most of them are free (although the ones that aren't tend to be silly expensive). Check out more here: http://f…

Getting smooth animations took an inhuman amount of effort... adding a rotating map would have been a little bit too much for launch. Hopefully we'll get to it in the near future. …