Gridded Weather and Forecast Data Visualization with Bokeh

We present three interactive, open-source, gridded data visualization websites built with the Bokeh plotting library. Two sites, ARTSY and ADVI, overlay gridded data onto a tiled map enabling user to zoom in and explore areas of interest or get a broader picture of the weather. ARTSY plots 24 hr quantitative precipitation estimates produced by the NSSL Multi-Radar/Multi-Sensor System. ADVI displays 2D model output fields from runs of the WRF model at the University of Arizona Department of Hydrology and Atmospheric Sciences. ADVI users can advance through the forecast valid times and see a time-series of the selected variable at any location in the domain, as well as a histogram of the displayed values. The third site displays vertical cross sections of modeled variables from UA WRF model runs. Interactive vertical cross sections helps us to understand how the model is treating the terrain at difficult locations such as along a ridge. We will demonstrate all three sites, discuss developing with Bokeh, and discuss difficulties one may encounter when implementing such websites. ARTSY and ADVI are available at https://forecasting.energy.arizona.edu/artsy and https://forecasting.energy.arizona.edu/advi.