[[Skew-T Log-P Diagrams]] can be accessed from a variety of sources online. They can be produced from actual observations (soundings), or forecast model data. ## Soundings Actual observations are made using a **radiosonde**, twice daily, at select locations around the world. [[Upper-Air page: RAL Real-Time Weather](https://weather.rap.ucar.edu/upper/)]() ![[rap ucar.jpeg]] [[Storm Prediction Center - Sounding Analysis Archive](https://www.spc.noaa.gov/exper/soundings/)]() ![[SPC NOAA SkewT.png]] [[Atmospheric Soundings](https://weather.uwyo.edu/upperair/sounding.html)]() ![[uwyo SkewT.gif]] ## Forecast Models Data from a variety of forecast models can be presented in Skew-T Log-P format. "Point" Skew-T Log-P generation can be particularly useful in regions without nearby stations/sites. For more information on forecast models, see [[Forecast Models for Skew-T Log-P Diagrams]]. [[Forecast Soundings: Area, Models, and Stations](https://mag.ncep.noaa.gov/sounding-model-area.php)]() ![[mag ncep noaa.gif]] [[Model Sounding](https://www.weather.gov/zse/ModelSounding)]() ![[NWS Model Sounding.jpeg]] ## Point Skew-T Log-P In addition to the following websites, platforms such as SkySight often include "point" Skew-T Log-P analysis tools. [[Forecast Models | Tropical Tidbits](https://www.tropicaltidbits.com/analysis/models/)]() ![[tropical tidbits.png]] [[BLIPMAP UniViewer](http://www.drjack.info/blip/univiewer.html)]() ![[BLIPMAP UniViewer point SkewT.png]]