Station GTRM4 - Search and Rescue Data

Superior Grand Traverse Bay, MI
47.179 N 88.241 W (47°10'43" N 88°14'29" 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
2023-12-04 0000Z29536-03136-0
2023-12-03 1800Z1001336-03536-0
2023-12-03 1200Z1301436-03536-0
2023-12-03 0600Z1541236-03536-0
2023-12-03 0000Z1431336-03736-0
2023-12-02 1800Z143236-03236-0
2023-12-02 1200Z285236-01636-0
2023-12-02 0600Z303436-01736-0
2023-12-02 0000Z295236-02536-0
2023-12-01 1800Z191236-03436-0
2023-12-01 1200Z326336-02936-0
2023-12-01 0600Z294436-03136-0
2023-12-01 0000Z322233-03333-0
2023-11-30 1800Z327836-03736-0
2023-11-30 1200Z231236-03336-0
2023-11-30 0600Z240236-03236-0
2023-11-30 0000Z266736-03736-0
2023-11-29 1800Z274936-03536-0
2023-11-29 1200Z232536-02836-0
2023-11-29 0600Z228536-02236-0
2023-11-29 0000Z235536-02036-0
2023-11-28 1800Z267536-02036-0
2023-11-28 1200Z322636-01736-0
2023-11-28 0600Z333836-01836-0
2023-11-28 0000Z319836-01636-0
2023-11-27 1800Z3111036-01636-0
2023-11-27 1200Z3121136-01736-0
2023-11-27 0600Z3111136-02336-0
2023-11-27 0000Z273536-02836-0
2023-11-26 1800Z224436-02736-0
2023-11-26 1200Z226436-02636-0
2023-11-26 0600Z236536-02836-0
2023-11-26 0000Z248636-03236-0
2023-11-25 1800Z2631036-03336-0
2023-11-25 1200Z230436-02336-0
2023-11-25 0600Z225436-02636-0
2023-11-25 0000Z271836-02936-0
2023-11-24 1800Z2961136-03036-0
2023-11-24 1200Z311836-02236-0
2023-11-24 0600Z333936-02136-0
2023-11-24 0000Z317836-02336-0
2023-11-23 1800Z3281136-02436-0
2023-11-23 1200Z3461036-02736-0
2023-11-23 0600Z356636-03536-0
2023-11-23 0000Z271136-03536-0
2023-11-22 1800Z226336-03736-0
2023-11-22 1200Z262336-03136-0
2023-11-22 0600Z323736-03436-0
2023-11-22 0000Z329536-03936-0
2023-11-21 1800Z308336-04336-0
2023-11-21 1200Z215136-03536-0
2023-11-21 0600Z160636-03936-0
2023-11-21 0000Z147636-04136-0
2023-11-20 1800Z139336-03836-0
2023-11-20 1200Z1491136-03836-0
2023-11-20 0600Z1331036-03936-0
2023-11-20 0000Z36236-03436-0
2023-11-19 1800Z196136-04036-0
2023-11-19 1200Z278336-02736-0
2023-11-19 0600Z347536-03536-0
2023-11-19 0000Z285536-04136-0
2023-11-18 1800Z2931036-04636-0
2023-11-18 1200Z278636-03936-0
2023-11-18 0600Z221436-03736-0
2023-11-18 0000Z258336-03536-0
2023-11-17 1800Z307936-03836-0
2023-11-17 1200Z325836-03536-0
2023-11-17 0600Z326936-03836-0
2023-11-17 0000Z292936-05636-0
2023-11-16 1800Z208736-06136-0
2023-11-16 1200Z212336-04636-0
2023-11-16 0600Z323136-03136-0
2023-11-16 0000Z262336-04136-0
2023-11-15 1800Z274936-05236-0
2023-11-15 1200Z270236-04636-0
2023-11-15 0600Z236436-05436-0
2023-11-15 0000Z225636-05636-0
2023-11-14 1800Z205536-05136-0
2023-11-14 1200Z175136-03031-0
2023-11-14 0600Z294236-02836-0
2023-11-14 0000Z282436-03736-0
2023-11-13 1800Z3001136-04536-0
2023-11-13 1200Z2861236-04536-0
2023-11-13 0600Z2811036-04836-0
2023-11-13 0000Z229336-04536-0
2023-11-12 1800Z207536-04536-0
2023-11-12 1200Z184336-04036-0
2023-11-12 0600Z180436-03836-0
2023-11-12 0000Z173436-04036-0
2023-11-11 1800Z194336-04136-0
2023-11-11 1200Z297136-03336-0
2023-11-11 0600Z286236-03336-0
2023-11-11 0000Z327136-03536-0
2023-11-10 1800Z4436-03736-0
2023-11-10 1200Z325336-03636-0
2023-11-10 0600Z289436-03736-0
2023-11-10 0000Z300736-03736-0
2023-11-09 1800Z286936-03836-0
2023-11-09 1200Z258736-03636-0
2023-11-09 0600Z273536-03936-0
2023-11-09 0000Z142636-04036-0
2023-11-08 1800Z1351336-03936-0
2023-11-08 1200Z1342136-03636-0
2023-11-08 0600Z1321936-03636-0
2023-11-08 0000Z1131436-03536-0
2023-11-07 1800Z48836-03336-0
2023-11-07 1200Z16536-03136-0
2023-11-07 0600Z359436-03336-0
2023-11-07 0000Z347536-03736-0
2023-11-06 1800Z327636-04636-0
2023-11-06 1200Z107536-04636-0
2023-11-06 0600Z1241036-04536-0
2023-11-06 0000Z1281636-04336-0
2023-11-05 1800Z1211336-04036-0
2023-11-05 1200Z49436-03536-0
2023-11-05 0600Z315236-03536-0
2023-11-05 0000Z295536-03936-0
2023-11-04 1800Z283636-04136-0
2023-11-04 1200Z316236-02736-0
2023-11-04 0600Z310236-03036-0
2023-11-04 0000Z295236-03536-0
2023-11-03 1800Z317836-04336-0
2023-11-03 1200Z212136-03636-0
2023-11-03 0600Z239336-03536-0
2023-11-03 0000Z317136-03636-0
2023-11-02 1800Z246436-04036-0
2023-11-02 1200Z254236-03136-0
2023-11-02 0600Z252636-03436-0
2023-11-02 0000Z243436-03536-0
2023-11-01 1800Z251736-03736-0
2023-11-01 1200Z264436-03136-0
2023-11-01 0600Z280236-03136-0
2023-11-01 0000Z341433-03133-0
2023-10-31 1800Z31936-03536-0
2023-10-31 1200Z27636-02836-0
2023-10-31 0600Z336236-02536-0
2023-10-31 0000Z253536-02736-0
2023-10-30 1800Z267436-03036-0
2023-10-30 1200Z287336-02836-0
2023-10-30 0600Z301236-03236-0
2023-10-30 0000Z240436-03236-0
2023-10-29 1800Z249536-03336-0
2023-10-29 1200Z281336-03436-0
2023-10-29 0600Z233236-03436-0
2023-10-29 0000Z226436-03436-0
2023-10-28 1800Z252536-03636-0
2023-10-28 1200Z316436-03736-0
2023-10-28 0600Z306836-03736-0
2023-10-28 0000Z300936-04336-0
2023-10-27 1800Z288736-05036-0
2023-10-27 1200Z76636-04536-0
2023-10-27 0600Z27436-04336-0
2023-10-27 0000Z27436-04536-0
2023-10-26 1800Z641136-04836-0
2023-10-26 1200Z681236-04536-0
2023-10-26 0600Z69836-04636-0
2023-10-26 0000Z43436-04736-0
2023-10-25 1800Z360236-04836-0
2023-10-25 1200Z6336-04636-0
2023-10-25 0600Z27336-04936-0
2023-10-25 0000Z39236-05236-0
2023-10-24 1800Z118236-05336-0
2023-10-24 1200Z7136-04936-0
2023-10-24 0600Z334136-04536-0
2023-10-24 0000Z155436-05136-0
2023-10-23 1800Z177336-05136-0
2023-10-23 1200Z320136-03636-0
2023-10-23 0600Z306336-03536-0
2023-10-23 0000Z324236-04436-0
2023-10-22 1800Z153636-04836-0
2023-10-22 1200Z312236-04036-0
2023-10-22 0600Z299336-03836-0
2023-10-22 0000Z352336-04036-0
2023-10-21 1800Z33736-04336-0
2023-10-21 1200Z39736-04136-0
2023-10-21 0600Z324336-03436-0
2023-10-21 0000Z351336-04036-0
2023-10-20 1800Z9736-04736-0
2023-10-20 1200Z350436-04436-0
2023-10-20 0600Z4636-04636-0
2023-10-20 0000Z11618-04918-0

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 GTRM4 station page