GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports Winter 1921 --------------------------------------------------------------------------------------------------------------- Site No. Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information --------------------------------------------------------------------------------------------------------------- 6 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF SILVER ISLET 9 1921 3 15 15 -1 -1 -1 -1 -1 -1 -1 147.TIF 9 1921 3 22 14 -1 -1 -1 -1 -1 -1 -1 148.TIF 22 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF EASTERN PORTION 25 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF HARBOR 26 1921 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 146.TIF 29 1921 3 22 13 -1 RT -1 -1 -1 -1 -1 -1 148.TIF HOUGHTON 29 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF PORTAGE CANAL 33 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF HARBOR 35 1921 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 146.TIF 50 1921 3 8 -1 -1 FD -1 -1 BK -1 -1 -1 -1 146.TIF TO 4Mi OUT 52 1921 3 8 17 -1 -1 -1 -1 -1 -1 -1 146.TIF 52 1921 3 22 16 -1 RT -1 -1 -1 -1 -1 -1 148.TIF 58 1921 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 146.TIF LAKE 58 1921 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF TO THE NORTH & NORTHWEST 69 1921 3 22 14 -1 NC -1 -1 -1 -1 -1 -1 148.TIF 71 1921 3 8 -1 -1 SI -1 -1 -1 -1 -1 -1 146.TIF 71 1921 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF LOWER BAY 74 1921 3 15 10 15 NC -1 -1 -1 -1 -1 -1 147.TIF BAY 87 1921 3 8 14 -1 -1 -1 -1 -1 -1 -1 146.TIF 87 1921 3 8 12 14 -1 -1 -1 -1 -1 -1 146.TIF AT THE DYKE 87 1921 3 15 14 -1 -1 -1 -1 -1 -1 -1 147.TIF 87 1921 3 15 -1 -1 NC -1 -1 -1 -1 -1 -1 147.TIF LOWER RIVER 87 1921 3 22 14 -1 RT -1 -1 -1 -1 -1 -1 148.TIF 94 1921 3 8 11 -1 -1 -1 -1 -1 -1 -1 146.TIF 108 1921 3 8 18 -1 SC -1 -1 -1 -1 -1 -1 146.TIF BELOW MOON ISLAND 111 1921 3 22 15 -1 -1 -1 -1 -1 -1 -1 148.TIF 114 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF TO PORT HURON 114 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF NORTH TO PIPE ISLAND 114 1921 3 22 15 -1 -1 -1 -1 -1 -1 -1 148.TIF PICKARD MATHERS DOCK 138 1921 3 8 -1 -1 IP -1 -1 -1 -1 -1 -1 146.TIF STRAITS 142 1921 3 8 14 -1 RT -1 -1 -1 -1 -1 -1 146.TIF 142 1921 3 15 5 -1 RT -1 -1 -1 -1 -1 -1 147.TIF 146 1921 3 8 -1 -1 LI -1 -1 -1 -1 -1 -1 146.TIF SOUTHWARD 188 1921 3 15 -1 -1 BK -1 -1 DC -1 -1 -1 -1 147.TIF 214 1921 3 8 -1 -1 FD -1 -1 BK -1 -1 -1 -1 146.TIF TO 4Mi OUT 214 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF LAKE 224 1921 3 15 12 -1 -1 -1 -1 -1 -1 -1 147.TIF 224 1921 3 22 12 16 -1 -1 -1 -1 -1 -1 148.TIF 228 1921 3 8 -1 -1 BK -1 -1 DI -1 -1 -1 -1 146.TIF EAST PORTION OF STRAITS 228 1921 3 15 -1 -1 PI -1 -1 -1 -1 -1 -1 147.TIF 228 1921 3 15 -1 -1 BK -1 -1 DC -1 -1 -1 -1 147.TIF EASTERN PORTION 228 1921 3 22 -1 -1 IP -1 -1 -1 -1 -1 -1 148.TIF SOUTH PASSAGE 228 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF NORTH CHANNEL 228 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF EAST END 231 1921 3 8 10 -1 -1 -1 -1 -1 -1 -1 146.TIF HARBOR 237 1921 3 8 18 -1 SO -1 -1 -1 -1 -1 -1 146.TIF 237 1921 3 15 16 -1 -1 -1 -1 -1 -1 -1 147.TIF 237 1921 3 22 12 16 -1 -1 -1 -1 -1 -1 148.TIF 237 1921 3 22 -1 -1 FD -1 -1 -1 -1 -1 -1 148.TIF SOUTHWARD 245 1921 3 8 -1 -1 FD -1 -1 -1 -1 -1 -1 146.TIF 245 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF 260 1921 3 8 -1 -1 FD -1 -1 DI -1 -1 -1 -1 146.TIF 262 1921 3 8 -1 -1 FD -1 -1 -1 -1 -1 -1 146.TIF 262 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF 271 1921 3 15 -1 -1 BK -1 -1 -1 -1 -1 -1 147.TIF 292 1921 3 8 -1 -1 NS -1 -1 RT -1 -1 -1 -1 146.TIF SOUTH END OF BAY 292 1921 3 15 -1 -1 NS -1 -1 RT -1 -1 -1 -1 147.TIF SOUTHERN PORTION 292 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF SOUTHERN PORTION OF BAY 304 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF WEST SHORE: SOUTH TO CHICAGO 304 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF E SHORE NORTH TO BEAVER ISLAND 304 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF SOUTH OF STRAITS 351 1921 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 146.TIF TO MARINE CITY 351 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF TO L. ST. CLAIR 357 1921 3 8 -1 -1 BK -1 -1 -1 -1 -1 -1 146.TIF 357 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF 357 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF 359 1921 3 8 -1 -1 RI -1 -1 -1 -1 -1 -1 146.TIF 359 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF 359 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF 368 1921 3 8 -1 -1 DI -1 -1 -1 -1 -1 -1 146.TIF LAKE 369 1921 3 8 -1 -1 LI -1 -1 -1 -1 -1 -1 146.TIF 384 1921 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 146.TIF WESTERN PORTION 384 1921 3 8 -1 -1 LI -1 -1 -1 -1 -1 -1 146.TIF 384 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF 385 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF 386 1921 3 8 -1 -1 FD -1 -1 PI -1 -1 -1 -1 146.TIF 386 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF LAKE 408 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF TO BUFFALO: HARBORS 408 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF EAST TO BUFFALO 427 1921 3 8 -1 -1 SO -1 -1 -1 -1 -1 -1 146.TIF 427 1921 3 15 -1 -1 BK -1 -1 RT -1 -1 -1 -1 147.TIF 427 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF BAY 435 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF 460 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF HARBORS AND LAKE 471 1921 3 8 -1 -1 LI -1 -1 -1 -1 -1 -1 146.TIF TO SACKETS HARBOR 481 1921 3 8 9 -1 SO -1 -1 -1 -1 -1 -1 146.TIF 497 1921 3 8 -1 -1 BK -1 -1 RI -1 -1 -1 -1 146.TIF 497 1921 3 15 -1 -1 OW -1 -1 -1 -1 -1 -1 147.TIF EXCEPT BAYS 497 1921 3 15 -1 -1 IP -1 -1 -1 -1 -1 -1 147.TIF BAYS 497 1921 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 148.TIF --------------------------------------------------------------------------------------------------------------- Ice thickness is in inches, -1 = no thickness reported, see report for ice conditon codes. T1 = ice thickness or part of a range if T2 is present, C1 = primary condtion of ice. T1C1 = thickness of C1 or part of range if T2C1 is presnet. C2, T1C2, T2C2, C3, T1C3, T2C3 are secondary and ternary ice conditon and condition thickness.