517  
SXUS83 KAPX 180508  
OMRAPX  
 
MARINE OBSERVATIONS  
NATIONAL WEATHER SERVICE GAYLORD MI  
108 AM EDT SAT APR 18 2026  
 
WIND DATA (KTS) WAVES WATER  
SITE DATE/TIME DIR SPEED GUST (FT) TEMP(F) SITE NAME  
-------------------------------------------------------------  
 
LAKE SUPERIOR/ST MARYS RIVER  
 
GRMM4 180450Z 180 12 16 GRAND MARAIS  
GRMM4 180450Z 180 12 16 GRAND MARAIS  
PTIM4 180430Z 110 9 12 POINT IROQUOIS  
CYAM 180405Z 90 9 15 SOO (CANADA)  
KANJ 180455Z 110 8 15 SAULT STE MARIE  
SWPM4 180430Z 120 7 14 S.W. PIER  
LTRM4 180430Z 120 11 13 LITTLE RAPIDS  
RCKM4 180430Z 130 11 13 ROCK CUT  
WNEM4 180430Z 150 11 14 WEST NEBISH ISLAND  
 
LAKE HURON  
 
DTLM4 180430Z 160 13 21 33.97 DETOUR VILLAGE  
KDRM 180455Z 150 9 15 DRUMMOND ISLAND  
KMCD 180455Z 150 8 MACKINAC ISLAND  
MACM4 180430Z 160 7 8 35.06 MACKINAC CITY  
KSLH 180456Z 160 7 CHEBOYGAN AIRPORT  
CYGM4 180500Z 200 12 14 CHEBOYGAN MARINA  
KPZQ 180455Z 170 11 18 ROGERS CITY  
PRIM4 180450Z 160 7 17 PRESQUE ISLE LIGHT  
KAPN 180454Z 150 12 ALPENA GUARD BASE  
APNM4 180450Z 140 13 15 ALPENA HARBOR LIGHT  
SPTM4 180450Z 180 6 20 STURGEON POINT LIGHT  
KOSC 180455Z 160 10 OSCODA  
TAWM4 180440Z 150 10 12 TAWAS POINT  
 
LAKE MICHIGAN  
 
KISQ 180455Z 120 4 MANISTIQUE  
PNLM4 180430Z 120 5 7 PORT INLAND  
NABM4 180440Z 120 5 7 NAUBINWAY  
KSJX 180455Z 170 12 24 ST JAMES  
KPLN 180454Z 200 8 PELLSTON  
KMGN 180455Z CALM HARBOR SPRINGS  
KCVX 180455Z 180 4 CHARLEVOIX  
GTLM4 180440Z 200 4 8 GRAND TRAVERSE LIGHT  
KTVC 180453Z 170 9 17 TRAVERSE CITY  
KFKS 180455Z 170 12 17 FRANKFORT  
BSBM4 180440Z 160 17 24 BIG SABLE POINT  
LDTM4 180430Z 180 14 18 LUDINGTON  
KLDM 180455Z 170 11 LUDINGTON AIRPORT  
 
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