Want to welcome the newer folks and answer these questions about size/space.
Tomnod knows (because of the 2 years of crowdsourcing) that a thick cloud base is very frustrating to Nodders. We can’t see! But neither can the satellites-- yet. DG has been training the server to recognize shapes. In fact, that is PART of what Nodders do as we mark what we do see— we teach the server how to recognize shapes. For example, when we see a damaged corner of a house but the rest is obscured by clouds, that one little tag on a corner piece can help teach shapes for further campaigns years from now.
As to why we don’t mark cloud tiles, it is not really needed. All non-tags say is “We cannot SEE anything”, not “nothing here”. Data analysis goes on at DigitalGlobe. They can easily see “Houston… we got clouds” (not as dramatic as the line from Twister, “We got cows”… but Tn does see it.) So you don’t need to worry about clouds.
ALSO, this was “first best imagery” after a #4 hurricane that was still a tropical storm east of Houston. DG will often (not always) run another pass over a storm area once the cloud bank shifts or clears out. If they do, great, we can do more tagging. But they don’t need to… they can work their magic with numbers… X number of tags per Xx area means XXxX houses affected. They can even use numbers to estimate human population per house x Xx area.
The other concern is large swaths of flooding. Again, long-time Nodders understand; it used to frustrate us, too. (I think it was England where nearly every street was affected.) But rather than having us mark water, Tn needs us to focus on homes/buildings (last I heard it was est at over 100,000), roads & bridges, and garbage. Tn NEEDS the individual building counts. Oh my, I remember doing Canada’s fire where we marked house after house. Or when we did the earthquake overseas. Oh my.
For roads, mark the beginning… then, I mark at main points or turns. On long stretches, like highways, you can mark one tag every inch or two to show continuous water over a highway or road. I saw one that (I think Claus posted)-- just 3 tags marking the beginning of water on a highway-- that was marked well, showing that every lane was blocked.
I have not seen any yet, but I’d use the garbage pile tag on vehicles blocking or sitting in roadways or parking lots where it was clearly underwater. Remember, vehicles were in driveways underwater. And of course, piles of trash. Ugh.
Remember, folks in Texas already know the big scene… the “miles and miles” of water that we see here. But they need the small detail work-- that’s what we do. Every tag we place on single items helps ground-authorities “see” better what lies ahead and beyond. Our detailed work matters.