Federal Weather Radar Impact Zones

publication date

MarineCadastre.gov Data Registry

URL where the source data were originally accessed.

Original shapefiles were provided by ROC, and were combined and condensed by NOAA OCM.

• Original source data was provided by NOAA Radar Operations Center • Import 4 shapefiles into a file geodatabase • Project 4 feature classes into NAD83 • Update attribute names to siteID and siteName • Add impactZone field to each feature class • Populate the fields so that GREEN = Notification Zone, YELLOW = Consultation Zone, ORANGE = Mitigation Zone and RED = No Build Zone • Dissolve each feature class based on siteID, siteName, and impactZone, unselecting multi-part features • Integrate each feature class at 1 foot tolerance to clean up most of the slivers in the data • Dissolve each feature class again based on siteID, siteName, and impactZone, unselecting multi-part features • Erase RED from ORANGE and Merge the new hollow ORANGE with RED • Union this new ORANGE-RED, and split and merge overlaps in the Mitigation Zone only • Erase the new ORANGE-RED from YELLOW and Merge the new hollow YELLOW with ORANGE-RED • Union this new YELLOW-ORANGE-RED, and split and merge overlaps in the Consultation Zone only • Erase the new YELLOW-ORANGE-RED from GREEN and Merge the new hollow GREEN with YELLOW-ORANGE-RED • Union this new GREEN-YELLOW-ORANGE-RED, and split and merge overlaps in the Notification Zone only • Delete from the No Build Zone features: Camp Humphreys, Kadena AB, Kunsan AB, Lajes AB and Langley Hill • Select by Attributes where siteID = 'PAHG', and populate so that all features have siteName = 'Kenai FAA (RDA1)' • Integrate new feature class at 20 feet tolerance to further clean up data slivers • Check geometry and project data into WGS 1984 Auxiliary Sphere