Station GTLM4 - Search and Rescue Data

Grand Traverse Light, MI
45.211 N 85.550 W (45°12'38" N 85°33'1" W)

For Great Lakes marine forecasts, select: GREAT LAKES FORECASTS

Average surface winds - six hour block.

Date (UTC) Average
Wind Dir
(True)
Average
Wind Spd
(Knots)
Wind
Obs
Average
Seas
(Feet)
Wave
Obs
Air Temp.
(Degrees F.)
Air Temp.
Obs
Water Temp.
(Degrees F.)
Water Temp.
Obs
2025-12-29 0600Z312240-03240-0
2025-12-29 0000Z751337-03437-0
2025-12-28 1800Z94536-03336-0
2025-12-28 1200Z108336-03236-0
2025-12-28 0600Z156436-03236-0
2025-12-28 0000Z165536-03236-0
2025-12-27 1800Z167536-03236-0
2025-12-27 1200Z164436-03236-0
2025-12-27 0600Z135336-03236-0
2025-12-27 0000Z1936-03436-0
2025-12-26 1800Z188136-03236-0
2025-12-26 1200Z145637-02937-0
2025-12-26 0600Z136938-02838-0
2025-12-26 0000Z106836-02936-0
2025-12-25 1800Z591236-03036-0
2025-12-25 1200Z201837-03137-0
2025-12-25 0600Z309936-03536-0
2025-12-25 0000Z196336-03436-0
2025-12-24 1800Z171335-03235-0
2025-12-24 1200Z23336-02936-0
2025-12-24 0600Z3521637-03237-0
2025-12-24 0000Z3321338-03738-0
2025-12-23 1800Z2662037-03837-0
2025-12-23 1200Z237836-03636-0
2025-12-23 0600Z170536-03736-0
2025-12-23 0000Z153536-03836-0
2025-12-22 1800Z2251037-03637-0
2025-12-22 1200Z204636-02836-0
2025-12-22 0600Z205636-02436-0
2025-12-22 0000Z199532-02132-0
2025-12-21 1800Z2651235-02235-0
2025-12-21 1200Z2962242-02142-0
2025-12-21 0600Z2923142-02142-0
2025-12-21 0000Z2893143-02943-0
2025-12-20 1800Z2362141-03441-0
2025-12-20 1200Z187737-02637-0
2025-12-20 0600Z191536-02336-0
2025-12-20 0000Z3111337-02437-0
2025-12-19 1800Z3192745-02445-0
2025-12-19 1200Z3082641-02441-0
2025-12-19 0600Z2492341-03441-0
2025-12-19 0000Z2191339-04239-0
2025-12-18 1800Z171737-04237-0
2025-12-18 1200Z170737-03937-0
2025-12-18 0600Z180536-03736-0
2025-12-18 0000Z205436-03336-0
2025-12-17 1800Z2881136-03636-0
2025-12-17 1200Z3192040-03740-0
2025-12-17 0600Z2412139-03939-0
2025-12-17 0000Z206937-03737-0
2025-12-16 1800Z200839-03139-0
2025-12-16 1200Z198636-02536-0
2025-12-16 0600Z239436-02536-0
2025-12-16 0000Z2841036-02436-0
2025-12-15 1800Z2602438-02438-0
2025-12-15 1200Z210836-02336-0
2025-12-15 0600Z2361037-02437-0
2025-12-15 0000Z2921336-02736-0
2025-12-14 1800Z01537-02437-0
2025-12-14 1200Z3372037-01937-0
2025-12-14 0600Z3162242-01542-0
2025-12-14 0000Z3102042-01342-0
2025-12-13 1800Z2862341-01341-0
2025-12-13 1200Z2922343-01743-0
2025-12-13 0600Z2842541-02441-0
2025-12-13 0000Z2431837-02837-0
2025-12-12 1800Z2441438-03138-0
2025-12-12 1200Z2971136-03036-0
2025-12-12 0600Z313936-02936-0
2025-12-12 0000Z3481033-02933-0
2025-12-11 1800Z3551436-02936-0
2025-12-11 1200Z3211940-02840-0
2025-12-11 0600Z3182039-02839-0
2025-12-11 0000Z3342142-02742-0
2025-12-10 1800Z62338-02938-0
2025-12-10 1200Z491939-03039-0
2025-12-10 0600Z128436-02836-0
2025-12-10 0000Z278836-02936-0
2025-12-09 1800Z2751738-02738-0
2025-12-09 1200Z184840-02440-0
2025-12-09 0600Z1881038-02538-0
2025-12-09 0000Z198633-02533-0
2025-12-08 1800Z211335-02635-0
2025-12-08 1200Z307736-02336-0
2025-12-08 0600Z338636-02336-0
2025-12-08 0000Z81536-02336-0
2025-12-07 1800Z3441841-02541-0
2025-12-07 1200Z3201537-02337-0
2025-12-07 0600Z5136-02336-0
2025-12-07 0000Z310936-02336-0
2025-12-06 1800Z3061636-02636-0
2025-12-06 1200Z2952141-02941-0
2025-12-06 0600Z2742136-03036-0
2025-12-06 0000Z239938-02838-0
2025-12-05 1800Z2451538-02738-0
2025-12-05 1200Z2401939-02639-0
2025-12-05 0600Z201936-02036-0
2025-12-05 0000Z204736-01836-0
2025-12-04 1800Z302937-02037-0
2025-12-04 1200Z3152341-01841-0
2025-12-04 0600Z3122541-02141-0
2025-12-04 0000Z3232241-02641-0
2025-12-03 1800Z3122040-03140-0
2025-12-03 1200Z2591839-03039-0
2025-12-03 0600Z2201238-02938-0
2025-12-03 0000Z206736-02836-0
2025-12-02 1800Z216736-02936-0
2025-12-02 1200Z258836-02936-0
2025-12-02 0600Z207636-02636-0
2025-12-02 0000Z225837-02837-0
2025-12-01 1800Z2552240-03140-0
2025-12-01 1200Z2561839-02939-0
2025-12-01 0600Z3091537-02837-0
2025-12-01 0000Z3262337-03037-0
2025-11-30 1800Z52940-03140-0
2025-11-30 1200Z371640-03140-0
2025-11-30 0600Z99836-02736-0
2025-11-30 0000Z119636-02836-0
2025-11-29 1800Z176336-03136-0
2025-11-29 1200Z265336-03036-0
2025-11-29 0600Z3061036-03036-0
2025-11-29 0000Z3121737-03037-0
2025-11-28 1800Z3122139-03139-0
2025-11-28 1200Z3212442-03142-0
2025-11-28 0600Z3212643-03243-0
2025-11-28 0000Z3162842-03442-0
2025-11-27 1800Z3093139-03539-0
2025-11-27 1200Z3043345-03445-0
2025-11-27 0600Z3103147-03547-0
2025-11-27 0000Z3132140-03740-0
2025-11-26 1800Z212937-03837-0
2025-11-26 1200Z212936-04036-0
2025-11-26 0600Z157436-04536-0
2025-11-26 0000Z173236-04536-0
2025-11-25 1800Z117236-04736-0
2025-11-25 1200Z150436-04536-0
2025-11-25 0600Z167336-04436-0
2025-11-25 0000Z200536-04936-0
2025-11-24 1800Z209736-05036-0
2025-11-24 1200Z186636-04236-0
2025-11-24 0600Z197536-03736-0
2025-11-24 0000Z2691036-04236-0
2025-11-23 1800Z2971837-04437-0
2025-11-23 1200Z2972342-04442-0
2025-11-23 0600Z2762241-04541-0
2025-11-23 0000Z223937-04237-0
2025-11-22 1800Z211536-04136-0
2025-11-22 1200Z310429-03729-0
2025-11-22 0600Z3471036-03836-0
2025-11-22 0000Z3231636-04036-0
2025-11-21 1800Z2771637-04137-0
2025-11-21 1200Z2991336-04136-0
2025-11-21 0600Z2942038-04538-0
2025-11-21 0000Z2471537-04437-0
2025-11-20 1800Z188536-04336-0
2025-11-20 1200Z182536-03536-0
2025-11-20 0600Z203436-03536-0
2025-11-20 0000Z213536-03836-0
2025-11-19 1800Z238836-04236-0
2025-11-19 1200Z140236-03436-0
2025-11-19 0600Z349436-03336-0
2025-11-19 0000Z10429-03629-0
2025-11-18 1800Z141131-03931-0
2025-11-18 1200Z346336-03536-0
2025-11-18 0600Z335636-03536-0
2025-11-18 0000Z335936-03636-0
2025-11-17 1800Z3181236-03936-0
2025-11-17 1200Z3321839-03839-0
2025-11-17 0600Z3291940-03940-0
2025-11-17 0000Z3132341-03941-0
2025-11-16 1800Z3182241-04041-0
2025-11-16 1200Z3272340-03940-0
2025-11-16 0600Z3362142-04242-0
2025-11-16 0000Z3352330-04730-0
2025-11-15 1800Z2851538-05138-0
2025-11-15 1200Z169836-05036-0
2025-11-15 0600Z160936-04736-0
2025-11-15 0000Z143436-04836-0
2025-11-14 1800Z122336-05136-0
2025-11-14 1200Z169436-04236-0
2025-11-14 0600Z215736-04136-0
2025-11-14 0000Z224918-04218-0

The six-hour averages are calculated as follows:

  • The 0000Z average uses data from 2100Z to 0259Z.
  • The 0600Z average uses data from 0300Z to 0859Z.
  • The 1200Z average uses data from 0900Z to 1459Z.
  • The 1800Z average uses data from 1500Z to 2059Z.

Display all available SAR data (up to 45 days)

Display GTLM4 station page