 Both direct and indirect ways have been found to indicate the presence of a wake depression . The most direct is through the use of surface observations . Prior to the development of mesoscale weather station networks , or mesonets , it was difficult to find wake lows . With the advent of mesoscale networks , wake lows have become easier to find . On weather satellite and weather radar imagery , wake lows and heat bursts normally occur on the back side of a precipitation area . However , within larger precipitation areas , they can be located within the area showing a minimum of returns . When using velocity data from a WSR @-@ 88D doppler radar , high winds on the back edge of reflectivity data can give away the location of a wake low . 
