Merge pull request #621 from akrherz/gh615_wfos

stop backcomputing affected WFOs for VTEC

CHANGELOG.md

@@ -44,6 +44,8 @@ segments with the same vtec action (read tropical products).
 - Improved logic behind `pyiem.plot.util.pretty_bins`, it no longer exactly
 returns the specified number of bins, but tries to do the right thing!
 - Increase remark trimming for LSR tweets for more length safety.
+- Stopped back-computing affected WFOs based on the UGCs found in a VTEC
+product.  This was causing more confusion than good (#615).
 
 ## **1.12.0** (18 Mar 2022)
 

src/pyiem/nws/products/_vtec_jabber.py

@@ -14,10 +14,11 @@
 def build_channels(prod, segment, vtec) -> list:
     """Build a list of channels for the given segment/vtec."""
     channels = []
+    # Two noisey products that don't default to the main WFO channel
     if prod.afos[:3] in ["MWW", "RFW"]:
-        channels = [f"{prod.afos[:3]}{s}" for s in prod.get_affected_wfos()]
+        channels.append(f"{prod.afos[:3]}{prod.source[1:]}")
     else:
-        channels = prod.get_affected_wfos()
+        channels.append(prod.source[1:])
     # GH604 - Append a -ACTION for CON, EXP, CAN actions
     suffix = f"-{vtec.action}" if vtec.action in ["CON", "EXP", "CAN"] else ""
     channels.append(f"{vtec.s2()}{suffix}")