Stormscope
®
WX-500 User’s Guide
4-4
Chapter 4 – Weather Display Interpretation
mine the severity of thunderstorms based strictly on the
number of discharge points. For example, in the western
U
nited
S
tates, a severe thunderstorm may only have a few
electrical discharges.
When the range is changed to
100
nmi (figure
4-3
), only
cluster
2
remains visible. Clusters
1
and
3
are beyond the
100
nmi range and therefore no longer appear on the screen.
(Clusters
1
and
3
would again be visible if the range were
returned to
200
nmi.) Cluster
2
is now more defined and the
discharge points are larger. The interpretation of cluster
2
remains the same: a moderately active thunderstorm at
azimuth
4:00
, range
75
nmi. Notice on the right-hand screen
(strike display mode) that there is less radial spread than on
the
200
nmi range. In general, radial spread is reduced on
the shorter ranges.
Typical Patterns
Figure 4-3. Range Changed to 100 nmi
R a t e
2 8
1 0 0 n m
S T R I K E
:
R a t e
2 5
1 0 0 n m
C E L L
:
