Northwest Atlantic Infrared Loop
| LatLon | Latitude and longitude overlay | Trop Fcst Pts | Forecast points for tropical cyclones |
| HDW-high | Wind (kts) between 23,000 and 50,000 feet | NCEP Fronts | Position of fronts and troughs of low pressure |
| HDW-mid | Wind (kts) between 10,000 and 23,000 feet | SST | Sea surface temperatures (°C) |
| HDW-low | Wind (kts) between the surface and 10,000 feet | IR Temp | Assigns values to color scale |

