A regional weather depiction plot

Program WXPLOT creates an hourly weather depiction chart for display on the GDM of an AFOS console. The station models used on the WXPLOT chart are similar to those of the NMC weather depiction plot NMCGPHPOW but are intended for use on a regional scale with greater data density. One addition to the NMC station model is a single letter describing the flying weather at the station. If the observed ceiling and visibility meet the criteria for IFF: weather, an "I" is plotted to the right of the station circle. Similarly, an "M" is plotted for marginal VFR weather. These characters depict, the flying conditions at a glance and can greatly simplify the hand analysis of the chart. WXPLOT is designed as an adjunct to the job stream for plotting hourly weather observations (SAO’s) in conventional station model format on a regional basis (Appendix 1). The valuable information that the ceiling and visibility data provide to the aviation forecaster or briefer more than compensates for the small amount of time WXPLOT adds to the regional plotting job. 1982 NWS (National Weather Service) CR (Central Region) Library Public Domain 1931