PILOT’S
GUIDE
26
STRIKE FINDER
DIGITAL WEATHER AVOIDANCE
Figure 19. Area Depicted by Strike Dot on 200 nm Range View
Convective weather over these areas can often produce more than one
lighting strike. In fact, several lightning strikes concentrated in small
areas are common under severe conditions. Multiple strikes
concentrated in the area depicted can appear to overlap and plot as one
dot. Remember, in the 100 or 200 nm range Strike Finder will plot one
visible dot per the square area depicted, no matter the number of actual
strikes detected. Therefore, when viewing a dot, be aware there could be
more than one lightning strike.
In areas of increased lightning activity
,
Strike Finder will plot independent
strike dots
near each other, and start to form
cells
(clusters). As the number
of lightning strikes detected increases, so does the
cell size
.Therefore, cell
size is directly related to the severity of hazardous activity within
thunderstorms.To assess developing thunderstorms,
zoom
to short range
for a better depiction.
Range Interpretation
As Strike Finder is
zoomed
to shorter view ranges, the square area
depicted decreases in size. In
Figure 20, (p.27)
, enlarged strike dots are used
to show how the area depicted decreases in size and the dots move
closer together as Strike Finder is zoomed through the four ranges. For
example, the square area depicted, decreases from 100 sq. miles at the 200
nm range view, to 1.56 sq. miles at the 25 nm range view. Therefore, two
strike dots plotted side by side will also be closer.
Strike Finder Pilot's Guide fix 9/19/05 10:59 AM Page AE