Friday, March 24, 2017
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Weather Station Information
Lightning Detection Information
Interpreting and Tracking the Storm With Lightning Strike Information
The lightning strike information display is not like a radar screen. Due to variations in lightning strength, a storm cell will produce a pie-slice shaped group of strikes on the display. Remember, this is provided for informational purposes. Do not use for safety purposes and if lightning is present where you are, take shelter immediately. I have included a FAQ's section addressing some questions I have had.
FAQ's about the data.
What do the crosses and dots mean?
The crosses are the most current strikes that have taken place. These have occurred in the last 60 secs prior to the image being captured. The dots are the locations for the past strikes and these could have occurred anytime within the persistence setting (i.e. 30 mins).
Does you map really cover as far north as Sudbury?
Strikes are interpreted by the radio signals they produce. If a very strong strike occurs, the signal travels and can be picked up at my station even 700 kms away (although the plot will not be accurate. But you have to remember that over that distance, sound waves get distorted and thus may be off 30-100 kms from the actual area.
How come the strikes don't match up with the radar images?
Lightning is recorded by
radio signal waves. The direction of the lightning is usually fairly accurate (±
5%) however direction and distance variations can move the strike plot. The distances can be out by as much as (± 25%).
Since the detector uses the strength of the signal to calculate the distance,
strong strikes will appear closer and weak strikes further away.
Thus this information should be used in combination with radar images to get
the best idea of where the lightning is occurring. In addition, if a storm is
behind another storm, sometimes the furthest storm is incorporated or
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