Panasonic 3.0 User Manual

EchoMap v3.0 

43 

 

7.3  Interpreting NexRAD Radar Pictures 

 

The figure above shows a NexRAD image with green, yellow and 

red cells being displayed, the Wx07 indicator shows that the 

image is 7 minutes old.  This will automatically count upwards 

as time increases so you always know the age of the data.  You 

can spot significant storm activity between a 110 and 120 heading 

at slightly more than 100 and 200 nautical miles away. 
The closer you are to the precipitation, the more detail the cell 

patterns will provide. The further the activity is from you the less 

detail is shown and the larger the grid areas are.  Providing more 

detailed information at long range would not provide additional 

useful strategic information due to the change in weather as you 

travel towards it.