Last March on the A.T. (NOBO starting at Deep Gap, NC; plan was to go to Wayah Bald); forecast was lows in 20's, highs in 40's, light precip for 1st 2 days. Out of nowhere comes a severe winter storm, of course after we had turned off our phones (no updates). We got about 10 miles in, temp dropping steadily, snow started about midnight, and temps day 2 never broke 19 F, water freezing in bottles, etc. My Clark NA and WBMJ payed for themselves! I had added a PLUQ for the lower third, empty pockets, and used a SOL Emergency Bivvy with my 30 degree bag. Not super toasty, but comfortable enough for the unexpected!