CAP Upper-Air Soundings

Data Source

Latest Observed

Model Forecast

Decoded from the single most recent WMO TTAA/TTBB radiosonde bulletin received (surface to 100mb). Not a picker — just whatever's freshest right now.

Enter a site ID above, or click any point on the map. Not every site has a nearby balloon launch — any site can get a model-based sounding for now (F00) or any forecast hour (hours past F18 only exist on the 00/06/12/18Z cycles; HRRR tops out at F48, RRFS goes to F84). Changing model or forecast hour re-renders for the last point picked.

Click map or enter a site to select a point

CAP WxCOP · Upper-Air Soundings

No sounding selected

Pick a data source to begin

Choose "Latest Observed" for the most recent real radiosonde launch, or "Model Forecast" (RRFS or HRRR) to generate an on-demand sounding for any site or map point, now or at any available forecast hour.

Full 100–1000mb Skew-T is the primary view; the lower-right inset zooms surface–700mb with the LCL marked, for a quick read on ceiling and low-level wind.

Rendering sounding…