SCAN The System for Convection Analysis and Nowcasting
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Troubleshooting Tips

Version # and
Source
Symptom Potential Solution
5.0 and up The SCAN SCTI display fields don't display properly. When loaded, they show nothing, or just noise. Relocalize using these options: f -tables -radar -auxFiles
(mainScript.csh f -tables -radar -auxFiles)
5.0 and up

Bob Pifer, AWIPS FP, KMFL
After localizing with -wwa, -tables, and -grids (mainScript.csh -wwa -tables -grids), the SCAN drop-down menu does not appear in the D-2D. Relocalize using these options: f -tables -radar -auxFiles
(mainScript.csh f -tables -radar -auxFiles)
5.0 The SCAN loading window appears for an instant then disappears. This repeats over and over until the D2D frame is cleared. Check for an old configuration file: /awips/fxa/data/working.cdp. If it is the old format (or if you don't know for sure), remove it and re-start the D2D. You may also want to check the default configuration as well: $FXA_DATA/tstorm/default.cdp. If it is old (or if you don't know), remove it and re-start the D2D.
5.0 SCAN loads, and storm cell tracks are seen, but no storm cell IDs are visible on the D2D and the Storm Cell Table does not show up. Check for an old configuration file: /awips/fxa/data/working.cdp. If it is the old format (or if you don't know for sure), remove it and re-start the D2D. You may also want to check the default configuration as well: $FXA_DATA/tstorm/default.cdp. If it is old (or if you don't know), remove it and re-start the D2D.
5.0 After trying to load SCAN, a window pops up saying that the configuration is bad and that you should clear the D2D and re-load SCAN. Doing this doesn't fix the problem. Remove the configuration files: /awips/fxa/data/working.*dp and $FXA_DATA/tstorm/default.*dp. Re-start the D2D. If this does not fix the problem, please contact your troubleshooting authority.
All The last frame (most current) in the D2D does not have storm cell identifiers, site locations, or storm tracks. None. If you loaded a radar product first (like base reflectivity), all subsequent products loaded into that pane will try to time match with the time of that radar product. Since SCAN processes data at the end of the volume scan, it will always lag one volume scan behind something like base reflectivity.
All General troubleshooting tip Check the products on the RPS list (this can be accomplished through the Data Monitor). The following products should be on the RPS list for SCAN to run optimally:

Name Identifier Product
Number
Importance to the
SCAN processor
Composite Reflectivity: 1km CZ 37 Vital
VIL VIL 57 Vital
Base Reflectivity: 1km Z 19 Vital
Storm Track and Identification STI 58 Suggested
Mesocyclone M 60 Strongly Suggested
Tornado Vortex Signature TVS 61 Strongly Suggested

National Weather Service
Last Modified: 20 Mar 2001, RLS.