GEMPAK Manual |
Programs
DCWCP
DCWCP decodes tornado and severe thunderstorm Watch Corner Points
(WCP) reports from a real-time data feed, or from a file fed to
the program through standard input, and writes the data
to an ASCII file. The program is controlled by inputs to the
command line.
The inputs are program options and the output file name or template.
For example, for real-time data feeds:
dcwcp [options] output_file
If running the program interactively with standard input, the -c
option must be used. The input file must also be specified.
For example:
dcwcp -c YYMMDD/HHNN [other_options] output_file < input_file
A template may be used to specify the output file name. The file
name template uses the date and time of the bulletin or report
to replace the following characters.
YYYY or YY Year with or without the century
MM Month number
DD Day
HH Hour
NN Minute
The format of the output ASCII file is as follows:
|Type|Issue_Time|Start_time|End_time|Watch_number|Points
Lat1 Lon1
Lat2 Lon2
Lat3 Lon3
Lat4 Lon4
Where: Type is TSM (thunderstorm), TOR (tornado) , NA (No watches
currently active)
Issue_Time, Start_time and End_time are full GEMPAK
date/time strings (YYYYMMDD/HHNN)
Watch_number is the number assigned to the watch
Points is the number of lat/lon pairs which follow
Extra spaces may appear anywhere in this line of information,
except in the first character position. The first character must
be a bar (|).
The latitude and longitude values are read using the FORTRAN
format (2F9.2). Currently, there are 7 points but this may not
always be the case.