SASENOAA Interface Engine

Example 50.5 Retrieving Tornado Vortex Signature Data within a Distance Specified by a Center and a Radius

(View the complete code for this example.)

When you specify NOAASET=NX3TVS, you retrieve data that show an intense gate-to-gate azimuthal shear associated with tornadic-scale rotation. This example shows how to search the NX3TVS database by using the RADIUS= and CENTER= options to retrieve tornado vortex signature data for the date range from May 5 to May 16, 2006. The output is shown in Output 50.5.1.


options validvarname=any;

title 'Tornado Vortex Signatures with CENTER= and RADIUS= Options for a Date Range';
libname mylib "/sasusr/noaa/doc/";

libname noaa sasenoaa "%sysget(NOAA_DATA)"
   noaaset=nx3tvs
   range='20060505:20060516'
   radius='15.0'
   center='-102.0,32.7'
   outxml=my2CR
   automap=replace
   mapref=MyMap
   xmlmap="%sysget(NOAA_DATA)my2CR.map"
   format=xml
   ;

data mylib.TVS2CR;
   set noaa.my2CR;
run;
proc contents data=mylib.TVS2CR; run;
proc print data=mylib.TVS2CR(obs=10); run;

Output 50.5.1: NX3TVS Data Search Using CENTER= and RADIUS= Options

Tornado Vortex Signatures with CENTER= and RADIUS= Options for a Date Range

Obs ztime wsr_id cell_id cell_type range azimuth max_shear mxdv shape
1 2006-05-05T00:05:50 KBMX Q0 TVS 7 217 403 116 POINT (-86.8535716274277 33.0786326913943)
2 2006-05-05T00:10:02 KBMX Q0 TVS 5 208 421 120 POINT (-86.8165772540846 33.0982820681588)
3 2006-05-05T00:12:34 KSJT P2 TVS 49 106 17 52 POINT (-99.5771091971025 31.1421609654838)
4 2006-05-05T00:17:31 KSJT B4 TVS 40 297 25 62 POINT (-101.188161700093 31.672392833416)
5 2006-05-05T00:29:13 KMAF H4 TVS 53 333 34 111 POINT (-102.664426480293 32.7306917937698)
6 2006-05-05T00:31:25 KLBB N0 TVS 51 241 24 78 POINT (-102.70047613441 33.2380072329615)
7 2006-05-05T00:33:25 KMAF H4 TVS 52 334 46 145 POINT (-102.6393683028 32.7226656893341)
8 2006-05-05T00:37:37 KMAF H4 TVS 50 334 34 107 POINT (-102.621904684258 32.6927081076156)
9 2006-05-05T00:41:51 KMAF H4 TVS 51 335 29 91 POINT (-102.614794815627 32.714139844846)
10 2006-05-05T00:44:33 KLBB N0 TVS 46 245 35 100 POINT (-102.643380529494 33.3266446067682)


Last updated: June 19, 2025