I did some research about how much braking action 3 increases landing distance....
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All true .. except .. does that absolve the crew from landing with a PIREP of NIL?
Weather below at time of arrival, pulled from a different source since the NWS/NOAA archival engine is down due to federal funding. This is raw data, corrected to local time not UTC (aircraft landing 1426 CST). ILS 02 was used and the winds were reported to be almost zero tailwind (averaged between reports, 125 deg, 7 knots). The crew apparently had legal visibility to initiate the approach and continue to landing if able.
COU,2019-01-11 14:20,M,M,M,120.00,7.00,0.06,30.16,M,0.50,M,OVC,M, M,M,499.00,M,M,M,SN FG,KCOU 112020Z AUTO 12007KT 1/2SM SN FG OVC004 00/00 A3015 RMK P0005 T00000000 MADISHF
COU,2019-01-11 14:25,M,M,M,130.00,7.00,0.06,30.16,M,0.50,M,OVC,M, M,M,499.00,M,M,M,SN FG,KCOU 112025Z AUTO 13007KT 1/2SM SN FG OVC004 00/00 A3015 RMK P0005 T00000000 MADISHF
Weather was somewhat challenging enroute, but not necessarily flat-out nasty. OTOH, what the radar shows doesn't show what the crew experienced.