Realtime Data

Ground-based GPS Integrated Precipitable Water
 

Atmospheric water vapor using ground-based Global Positioning System (GPS) receivers

NOAA Profiler Network Real-Time Data Display
 

Vertical profiles of horizontal wind speed and direction

Surface Observations

Data from METAR sites and various mesonets throughout North America and Hawaii (Java applet)

Real-Time Verification System (RTVS)
 

Real-time assessment of the quality of both human- and model-generated forecasts of icing, turbulence, ceiling and visibility, convection, and precipitation