VCC: Tornado-Alert Polygons in Visual Command Center (VCC) Do Not Match the National Weather Service (NWS) Polygon

Problem:

The National Weather Service (NWS) polygon does not match the polygon shown on the map in Visual Command Center (VCC).

Root Cause:

The NWS updates the initial warning area which increases or decreases the polygon in VCC.

Example of an NWS Tornado Warning:

NWS Tornado Warning

Example of the VCC map before the NWS reduces the warning area:

VCC Map Polygon

Example of the VCC map after the NWS reduces the warning area:

VCC Map Polygon After Reduction

An NWS Tornado Warning is likely to have oddly shaped polygons that do not align with county boundaries due to the inability to pinpoint where a tornado will likely form.

Find out more about Storm-Based Warnings from the NWS.

Solution:

This behavior is expected as tornado movement is unpredictable.

Was this article helpful?
0 out of 0 found this helpful

Comments

0 comments

Article is closed for comments.