The National Oceanic and Atmospheric Administration's nowCOAST web app provides real-time observations, forecasts, and warnings for a wide range of coastal and inland weather, water, air, and hazard issues. Available layers and services include:

• Weather forecasts
  • Hour-by-hour forecasts for the next week for any U.S. coastal or inland location, including temperature, humidity, wind speed and direction, cloud cover, rain and snow totals, and probability of precipitation
  • Links to more detailed forecasts for all areas
  • Detailed marine weather for beaches, coastal waters, offshore waters, and high seas areas
• Current weather radar, plus weather radar information for the preceding four hours
• Precipitation accumulation for the preceding 1, 3, 6, 12, 24, 48, and 72 hours
• Tropical cyclone tracks (both forecast and observed) and potential storm surge flooding
• Water currents, speed, level, and temperature for the Great Lakes, estuaries, coastal waters, and global oceans
• Sea surface temperatures
• Tide predictions
• River level forecasts
• Air quality forecasts for cities
• Thunderstorm and fire weather outlooks
• Links to individual observation sites across the U.S. and North and Central America:
  • Weather stations
  • Coastal/lake/ocean platforms
  • River gages
  • Water quality stations
  • Air quality stations
  • Upper-air stations
  • Weather radars
  • Wind profilers

Additional layers include algal bloom forecasts, global aviation weather forecasts, and links to more detailed analyses of a wide range of conditions, as well as an entire version of the website especially for mariners.

Click here to access the nowCOAST web app.

Source: National Oceanic and Atmospheric Administration