NOAA NOAA's nowCOAST

What's New in nowCOAST Version 4.6?



Screenshot of nowCOAST Viewer at Version 4.6, highlighting the newly added Surface Water Currents layers

Screenshot of nowCOAST Viewer, highlighting newly-added Surface Water Currents layers. The blue boxes shown over the Great Lakes and other areas highlight individual OFS coverage areas that are too small to view at the current scale. As you zoom in, these boxes will disappear and the individual OFS surface currents will appear.

On September 22, 2009, the National Ocean Service's Coast Survey Development Laboratory released a new version of its Web mapping portal, nowCOAST (http://nowcoast.noaa.gov). nowCOAST is a GIS-based Web mapping portal for near real-time coastal environmental information from NOS, NWS, NESDIS, other federal agencies, and regional ocean observing systems. The new version of the portal now displays the latest nowcasts of surface water currents along with water level and surface water temperatures from operational numerical oceanographic forecast modeling systems operated by NOAA's National Ocean Service (NOS) Center for Operational Oceanographic Products and Services and the U.S. Navy's Naval Oceanographic Office (NAVOCEANO). Surface currents for the Western North Atlantic and Eastern Pacific Oceans are provided once per day by NAVOCEANO's U.S. Navy Global Coastal Ocean Model (G-NCOM), while hourly surface current nowcasts for the five Great Lakes, Galveston Bay, New York/New Jersey Harbor, and St. John's River are provided by NOS' operational estuarine and Great Lakes forecast modeling systems. The nowcasts are depicted using custom flow visualization software developed by the Data Visualization Research Lab at the University of New Hampshire's Center for Coastal and Ocean Mapping.

The NOS estuarine forecast systems were developed by NOS CSDL's Marine Modeling and Analysis Programs and the NOS Great Lakes forecast systems were developed by NOAA Great Lakes Environmental Research Laboratory and Ohio State University.

When viewing the NCOM surface currents for the Western Atlantic and Eastern Pacific, several light blue boxes (pictured above) are displayed on the map over the Great Lakes, Galveston Bay, St. John's River and New York/New Jersey Harbor. These boxes indicate data coverage areas for the Great Lakes and Estuarine OFS products. As you zoom in to view your desired location, these blue boxes will disappear and the surface currents nowcasts for each OFS product will appear in their place.


Screenshot of nowCOAST Viewer at Version 4.6, highlighting NCOM Surface Water Currents

Screenshot of nowCOAST Viewer, showing detailed view of the NCOM Surface Water Currents nowcast. The background colors shown indicate flow speed.


Screenshot of nowCOAST Viewer at Version 4.6, highlighting Lake Superior OFS Surface Water Currents w/SST

Screenshot of nowCOAST Viewer, showing detailed view of the Lake Superior OFS Surface Water Currents nowcast. The background colors shown indicate Sea Surface Temperature.


Screenshot of nowCOAST Viewer at Version 4.6, highlighting New York/New Jersey Harbor OFS Surface Water Currents

Screenshot of nowCOAST Viewer, showing detailed view of the New York/New Jersey Harbor OFS Surface Water Currents nowcast. The background colors shown indicate Water Levels.






What's New in nowCOAST Version 4.5?



Screenshot of nowCOAST Viewer at Version 4.5, highlighting the Tropical Cyclone Track Forecast products

Screenshot of nowCOAST Viewer, highlighting newly-added NHC Tropical Cyclone Track Forecast products

On June 30, 2009, the National Ocean Service's Coast Survey Development Laboratory released a new version of its Web mapping portal, nowCOAST (http://nowcoast.noaa.gov). nowCOAST is a GIS-based Web mapping portal for near real-time coastal environmental information from NOS, NWS, NESDIS, other federal agencies, and regional ocean observing systems. The new version of the portal now displays the NOAA/National Hurricane Center's Tropical Cyclone Track Forecast for all active Tropical Cyclones (Hurricanes, Tropical Depressions, Tropical Storms, Remnant Lows) in the North Atlantic, Caribbean Sea, Gulf of Mexico and Eastern Pacific ocean. The new products being displayed include the Tropical Cyclone Track Forecast (predicted center positions and wind speeds at 0, 12, 24, 36, 48, 72, 96 and 120 hours), Cones of Uncertainty (probable track of center) for days 1-3 and days 4-5, and Tropical Cyclone Watches and Warnings along coastal areas. Using the Link to Data tool, a user can click on the Cone of Uncertainty of a Tropical Cyclone to obtain the latest NHC forecast advisory. The new version of nowCOAST displays these data layers using the NHC's new GIS-based forecast products. The nowCOAST development team would like to thank NHC personnel for their assistance over the past 3 years and for their efforts to make NHC products available in GIS-compatible format for us and others to use.

The new version of nowCOAST was made possible by funds provided by NOAA's Southeast Caribbean Regional Team (SECART) and Integrated Water Resources Services (IWRS) project to support development of visualization tools for NOAA's Coastal and Inland Flooding Observation and Warning Project (CI-FLOW). CI-FLOW is a multi-agency project to evaluate and test new technologies to produce accurate and timely identification of inland and coastal floods in coastal North Carolina.


Screenshot of nowCOAST Viewer at Version 4.5, highlighting the Tropical Cyclone Track Forecast products

Screenshot of nowCOAST Viewer, showing detailed view of newly-added NHC Tropical Cyclone Track Forecast products


Screenshot of nowCOAST Viewer at Version 4.5, highlighting the Tropical Cyclone Track Forecast products

Screenshot of nowCOAST Viewer, showing newly-added NHC Tropical Cyclone Track Forecast products overlaid with NCEP's daily Sea Surface Temperature Analysis


Screenshot of NHC Tropical Cyclone Forecast Advisory

Screenshot of NHC Tropical Cyclone Forecast Advisory. Advisories can be obtained through nowCOAST by selecting the NHC Tropical Cylone Track Foreast as the active layer, selecting the Link to Data tool and clicking on a Tropical Cyclone Track.






What's New in nowCOAST Version 4.4?



Screenshot of nowCOAST Viewer at Version 4.4, highlighting the Precipitation Analysis products

Screenshot of nowCOAST Viewer, highlighting newly-added Precipitation Analysis products

On May 28, 2009, the National Ocean Service's Coast Survey Development Laboratory released a new version of its Web mapping portal, nowCOAST (http://nowcoast.noaa.gov). NowCOAST is a GIS-based Web mapping portal for near real-time coastal environmental information from NOS, NWS, NESDIS, other federal agencies, and regional ocean observing systems. The new version of portal now displays 1) updated 1-hr quantitative precipitation estimates (QPEs) or analyses from the NWS/National Center for Environmental Prediction's Real-Time Mesoscale Analysis (RTMA) system and 2) experimental 1-, 3-, 6-, 12-, and 24-hr QPEs from NOAA's National Severe Storms Laboratory (NSSL).

The RTMA 1-hr QPE has a spatial resolution of 5 km (3 miles) and is updated once per hour. The RTMA QPE is available on nowCOAST at approximately 55 minutes past the top of the hour. The RTMA QPE is a multi-sensor based precipitation analyses based on the NCEP Stage-II National Precipitation Analysis developed by NCEP in cooperation with the NWS Office of Hydrology

The NSSL's experimental QPEs have an approximate spatial resolution of 1 km (0.6 mile). The 1- and 3-hr QPEs are updated every 5 minutes while the 6-, 12-, and 24-hr QPEs are updated every hour. The QPEs are available on nowCOAST between 15-20 minutes past the valid time of the latest analysis. The QPEs are generated from NOAA's National Severe Storms Laboratory's Next Generation Quantitative Precipitation Estimate (QPE) system, referred to as Q2

The addition of the RTMA and NSSL QPEs was made possible due to the support from the Coastal and Inland Flooding Observation and Warning Project (CI-FLOW), a multi-agency project to evaluate and test new technologies to produce accurate and timely identification of inland and coastal floods in the Tar-Pamlico and Neuse river basins of coastal North Carolina (http://www.nssl.noaa.gov/ciflow/)

The nowCOAST web-mapping portal, a product of NOAA's Coast Survey Development Lab, is monitored for reliability during normal business hours, Monday through Friday

If you have any questions or comments about nowCOAST, please contact the nowCOAST development team at: nowcoast.team@noaa.gov






What's New in nowCOAST Version 4.3?



Screenshot of nowCOAST Viewer at Version 4.3, highlighting the RTMA Analysys
Screenshot of nowCOAST Viewer, highlighting recently-added RTMA Analysis layers in the layer list

Screenshot of nowCOAST Viewer at Version 4.3

Screenshot for nowCOAST viewer depicting NDFD surface wind speed forecast for CONUS, Hawaii, Puerto Rico/Virgin Islands, and Alaska

On May 12, 2009, the National Ocean Service's Coast Survey Development Laboratory released a new version of its Web mapping portal, nowCOAST (http://nowcoast.noaa.gov). NowCOAST is a GIS-based Web mapping portal for near real-time coastal environmental information from NOS, NWS, NESDIS, other federal agencies, and regional ocean observing systems. The new version of portal 1) expands the display of gridded surface weather forecasts from the NWS' National Digital Forecast Database (NDFD) beyond the contiguous U.S. (CONUS) to Hawaii, Alaska, and Puerto Rico and 2) also now displays the latest hourly surface wind and air temperature analyses from NWS/National Centers for Environmental Prediction's Real-Time Mesoscale Analysis (RTMA) for CONUS.

NDFD regional weather forecasts for Alaska, Puerto Rico/Virgin Islands, and Hawaii are integrated with the existing NDFD forecasts for CONUS. Thus, NDFD for CONUS and these new regions can be viewed by selecting the NDFD on the map layer list or from the drop down menu on the nowCOAST map viewer.

Please note that some NDFD variables (elements) are not available or may not be considered 'operational' for all regions by the NWS. Maximum and minimum air temperature forecasts are available for all regions but are considered experimental for Alaska. Relative humidity forecasts are not available for Alaska. Surface wind velocity forecasts are available for all regions but are considered experimental for Alaska. Significant wave height forecasts are available for all regions but are considered experimental for Alaska. Relative humidity forecasts are not available for Alaska. Precipitation amount (quantitative precipitation) forecasts are not available for Alaska. NDFD forecasts for Guam are not yet available on nowCOAST.

Screenshot of nowCOAST Viewer at Version 4.3

Example of NDFD significant wave height forecast for Puerto Rico and Virgin Islands.

Screenshot of nowCOAST Viewer at Version 4.3

Example of NDFD surface wind forecast for Hawaii.

NCEP's RTMA is an hourly, high-resolution, objective analysis of surface meteorological observations. The spatial resolution is 5 km (3 miles). The surface air temperature analysis is valid at 2 m (7ft) above ground or water and the surface wind analysis is valid at 10 m (33ft) above the surface. RTMA is produced from the Two-Dimensional Variational Analysis version of NCEP's Gridpoint Statistical Interpolation (GSI). The first guesses for CONUS domain analyses are from the 1-hour forecasts of the NCEP Rapid Update Cycle. RTMA was developed by NCEP/Environmental Modeling Center's Mesoscale Modeling Branch in cooperation with NOAA/Office of Oceanic and Atmospheric Research's Environmental Research Laboratory. RTMA hourly analyses are valid at the top of the hour and available on nowCOAST at 55 minutes past the hour.

Screenshot of nowCOAST Viewer at Version 4.3

Example of RTMA hourly surface air temperature analysis for NE and Eastern Great Lakes Region.

The addition of RTMA surface analyses and the expansion of NDFD gridded forecasts beyond CONUS was made possible due to support from the NOAA-University of New Hampshire Coastal Response Research Center.

The nowCOAST web-mapping portal, a product of NOAA’s Coast Survey Development Lab, is monitored for reliability during normal business hours, Monday through Friday

As always, if you have any questions or comments about nowCOAST, feel free to contact the nowCOAST Team at: nowcoast.team@noaa.gov