You may enjoy the snowfall event maps generated by the IEM. One of the data sources used to generate the map comes from National Weather Service Local Storm Reports (LSR)s. A recent LSR example shows the location and reported amounts of accumulated snowfall. Each LSR also contains a source designation, which is the subject of today's featured chart. For NWS Des Moines, the chart presents the yearly rank of LSR source for number of snow reports with one representing the source with the largest number of reports for the year. The left and right axis labels show the ranks for the 2006 and 2025 years respectively with the lines showing the yearly progression of that source. General public reports of snowfall are a very important component of this information source. It should be denoted though that the "CO-OP Observer" and "CoCoRaHS" counts are only those included in LSRs. Both of these networks contribute many thousand such reports within a given year and their data is available within other products than LSRs.

View other webcams