Notice: The new MDL GEFS plumes webpage upgrades and replaces this webpage and is currently accessible to those with NOAA login credentials. EMC has provided the code to replicate this webpage on GitHub. The GitHub code is provided as-is with no expectation of support.

About the plumes: Data for each station is interpolated from a 0.5-degree grid for both the GEFS (gray lines for control and perturbed members; black for mean) and GFS (blue line), though the native resolution of the GFS is ~13 km vs ~33 km in the GEFS. The precipitation-type plot uses the closest gridpoint to each station as opposed to interpolation and does not contain a trace for the GFS. In the 3-h accumulation plots, F00 values are derived from the previous cycle's forecast. All observed data are derived from hourly station reports. Zoom for more CONUS stations.

This site is not operational; therefore, data will be missing occasionally. The contact for this site is:

start total accumulated QPF and snowfall at 0 inches
when adjusting forecast hours spanned

plot observed temperature, dew point, wind, SLP, and
accumulated precipitation when available