Please see below from Estes:

Winter Weather

Limited Limited Closed Closed
1 Richmond, VA – RIC/1 7 Roanoke, VA – ROA/7
4 Stafford, VA – STF/4 8 Waynesboro, VA – WAY/8
5 Winchester, VA – WIN/5 14 Pulaski, VA – PUL/14
15 Williamsport, PA – WMP/15 23 Charleston, WV – CWV/23
21 Altoona, PA – APA/21 52 Topeka, KS – TPK/52
24 Harrisburg, PA – HAR/24 62 Cincinnati, OH – CIN/62
25 Pittsburgh, PA – PIT/25 67 Dayton, OH – DAY/67
27 Wilmington, MD – WLD/27 86 Louisville, KY – LOU/86
27 Wilmington, MD – WLD/27 87 Columbus, OH – CBS/87
29 Baltimore, MD – BAL/29 93 Indianapolis, IN – IND/93
30 Lexington, KY – LEX/30 104 Effingham, IL – EFF/104
37 Nashville, TN – NAS/37 123 Parkersburg, OH – PBG/123
39 Greeneville, TN – GRT/39 164 Kansas City, KS – KCK/164
44 Norristown, PA – NTN/44 503 Edwardsville, IL – EIL/503
53 Philadelphia, PA – PHI/53  
55 West Middlesex, PA – WMX/55  
63 Paducah, KY – PAD/63  
64 St Louis, MO, MO – SLO/64  
66 Bloomington, IL – BLO/66  
71 Salisbury, MD – SAL/71  
74 Knoxville, TN – KNX/74  
76 Owensboro, KY – OWN/76  
82 Syracuse, NY – SYR/82  
116 Lakewood, NJ – LKW/116  
117 Mansfield, OH – MFD/117  
118 Kokomo, IN – KOK/118  
123 Parkersburg, OH – PBG/123  
125 Grand Forks (agent), ND – GFN/125  
140 Fargo, ND – FGO/140  
151 Hagerstown, MD – HAG/151  
152 Indianapolis West, IN – INW/152  
155 Cleveland, OH – CLE/155  
159 Racine, WI – RAC/159  
160 Columbia, MO – CLO/160  
161 Springfield, MO – SPM/161  
162 Wichita, KS – WCT/162  
173 Bismarck, ND – BS2/173  
174 Garden City, KS – GCY/174  
192 Oklahoma City, OK – OKC/192  
215 Cheyenne, WY – CWY/215  
216 Casper, WY – CPW/216  
237 Twin Falls, ID – TFL/237  
247 Pocatello, ID – POC/247  
251 Butte, MT – BTT/251  
254 Missoula, MT – MLA/254  
259 Bozeman (agent), MT – BOZ/259  
263 Missoula (agent), MT – MIS/263  
265 Butte (agent), MT – BUT/265