Totals are posted in tabular form by county for events where at least one report of two or more inches (5.1 cm) of snow is received. Maps have been generated for notable events during recent seasons. They not only depict the distribution of snowfall but also assist in the assessment of the quality of reported observations. The latter is part of a careful evaluation that often results in a small portion of the observations being discarded. A key to successful assessment is the quantity of observations. Major storms often generate approximately 200 reports, thus suspicious observations become quite evident over the New Jersey landscape.
The vast majority of snowfall reports are submitted by volunteer observers. These citizen scientists most often have had training as National Weather Service (NWS) SKYWARN Spotters or NJ Community Collaborative Rain, Hail and Snow Network participants. Some NWS Cooperative Weather Observer reports are also included. We inform potential data users that while the reports may not be deemed official they represent reasonable observations of the event.
This presentation will outline the generation of event reports. Examples of the financial significance of eliminating inaccurate reports will be provided for contracts ranging from driveway plowing to townhouse communities to shopping malls.