This page shows reports of data and averaging
calculations for each daily report for the last month.
CRN monthly data from NCDC are ingested via web
fetch around the 7th day of each month (sometimes later depending on the
Federal holiday schedule) and used to generate these reports as well as
the monthly maps.
The challenge for this project was to get these
two asynchronous data sources synchronized. Currently every effort is
made to get the two data sources synchonized and plotted on the same map
about one hour and fifteen minutes behind real time. For the most part,
all CRN and METAR stations have reported by this time
Reports: this process runs just prior to image building. Image
building pulls the average figures out of these reports and plots
the data on the map. The national average temperature is derived
from a simple average of all stations.