Web Service for NOAA NWS NDFD Gridded Forecasts of Surface Wind Speed (knots) (Time Offsets)

This nowCOAST™ time-offsets map service provides maps depicting the NWS surface wind speed forecasts from the National Digital Forecast Database (NDFD) at 6-hr increments out to 3 days (NDFD has forecasts out to 7 days which are available via the nowCOAST™ time enabled map service for NDFD elements). Each forecast is valid for the specified forecast projection hour with respect to the latest update cycle time. The forecast is valid at 10 m (33 feet) above ground level. The wind speeds are in units of knots (1 knot = 1.15 miles per hour). The wind speed forecast is indicated on the map by different colors for 5-knot increments up to 60 knots (69 mph) and then at 10-knot increments up to 100 knots (115 mph). The forecasts are updated in the nowCOAST™ map service four times per day. For more detailed information about layer update frequency and timing, please reference the nowCOAST™ Dataset Update Schedule.