Trac target persistence – Boltek NexStorm Lite User Manual

Page 24

Advertising
background image

Lightning Detection Software, Version 1.0

On-map Ident
This feature in conjunction with the TRAC target color mapping allows you to instantly see important
characteristics of a storm by simply viewing it on the map. The identity text that is attached to a TRAC target
is called a tag. You enable On-map ident by selecting in the drop-down box how the identify labels should be
displayed, either Single or All. Single will attach the identification tag to the storm that was last selected in the
TRAC Report table. All will attach identity tags to all storms that are being tracked. (Flip tag button – see

TRAC Report section, Flip tag button

)

The format of the ident code when viewed from left to right is as follows (example assumes an On-map ident
code on the map showing K-2332+4-):

K-2332

Identification code for the thunderstorm, the letter and numbers are unique for each storm
and are computed based on the time of detection.Look for this identification code in the
TRAC Report table to locate additional information about the storm.

blue - or red +

Dominating Cloud to Ground strike polarity in this storm, can be negative (-) or positive (+).

4

last recorded strike rate.

strike rate

^

increasing

v

decreasing

-

no change or undetermined

Figure 8. On-map ident examples

A
Storm identification number F-6171, dominating
CG strike polarity is positive, latest recorded
strike rate per minute = 3, no detectable change
in strike rate.
B
Storm identification number F-4932, dominating
CG strike polarity is negative, last recorded
strike rate per minute = 4, the strike rate per
minute is increasing.
C
Same as B a few minutes later, strike rate is now
12 strikes per minute and decreasing.

TRAC Target symbols
Sets which symbols should be used for displaying TRAC
targets on the map. Targets are drawn in three colors where
each color denotes a storm’s intensity based on its strike rate.

Color

Strike rate/min

Classification

Green

1-10 Weak

Yellow

11-49 Moderate

Red

> 50 Strong or Severe

Table 1

Current version of NexStorm has three target symbols that you can choose from. Symbol selection is linked
meaning that the symbol you select will be used for all storm target plots, irrespective of their intensity. You
can alter the default colors that are used for storms in each intensity class and also modify the width of the
lines that the symbols are drawn with. The dash-dot and dotted line types are only available when the line-
width is set to 1 pixel.

TRAC Target persistence
This setting tells NexStorm how long time it should keep monitoring a quiet storm for additional activity. Once
the configured period of time expires, the storm is considered dissipated and the program will stop tracking it.
You can set the release time to anywhere between 5 and 20 minutes with the default being somewhere in
between.

Edition: 5/L1
2007-09-02

© 2007 Astrogenic Systems

Table of Contents

Page 24

Advertising