16Web
FlightRisk
Know whether your flight is at risk, and exactly why. A 0 to 100 disruption score for US domestic flights, with every point explained.
OpenIndex / Lifestyle and travel / 18
18 · Web
Plain Sky
Plain Sky shows the same storm information that storm spotters see, but says it in words an ordinary person can act on. No dBZ, no velocity colors, no legend. Each screen answers a question a person actually has: what will happen at my house in the next hour and when, where is the storm and what is in it, and which of the places I care about is in trouble tonight. Official National Weather Service warnings keep their exact names and always win over the app's own estimates.
StatusConcept
PlatformWeb
AreaLifestyle and travel
Entry18 of 28
Who it is for
Built for
Anyone at home deciding whether to act now or wait, and families juggling home, school, work and a game field on a stormy evening.
What is in it
What we are building
- Storm Lanes: a one hour timeline for one place. One row per hazard (rain, hail, wind gusts, tornado risk, official warnings), a plain caption under each, and a single plan line like "leave by 4:42, or wait until 5:10."
- Labeled Radar: the map with every colored area labeled in words, "Heavy rain, hard to see while driving," "Hail here, up to golf ball size." Four time buttons instead of a scrubber. Projected frames drawn lighter and marked as such.
- My Places: home, a child's school, work, the game field, all on one screen for the evening ahead, worst first.
- Built on NOAA MRMS radar products and the NWS alerts API. The heavy work happens once per radar frame on the server, so cost stays flat as users grow.
- Says when it is guessing: future times are rounded, projection stops at 60 minutes, rotation is never called a tornado unless NWS says so.
- Not an official warning service, and says so on every screen, pointing to NWS, NOAA Weather Radio and Wireless Emergency Alerts.
Progress
Where it stands
- ConceptThree screens, data sources, Cloudflare architecture
- Design compsStorm Lanes, Labeled Radar, My Places
- Phase 0Live rain and warnings lanes for now
- Tracking and projection
- Labeled Radar
- My Places and accounts
- Public beta
Build log
What has happened
Newest first. One line per step, added as the work goes.
- Concept and build document complete: three screens, data behind each lane, verdict rules, API shape, Cloudflare architecture and a five phase build order. Screens are design comps, not a working build.
- Listed on the Nspire App Co index.
Waitlist
Tell me when Plain Sky is ready
Leave an email and we will tell you when it is ready to try. One message when it ships, and nothing else.