Marine Weather and Tide Forecast for Winamac, IN
 | Sunrise 6:58 AM Sunset 8:30 PM Moonrise 7:48 AM Moonset 12:00 AM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
LMZ745 Expires:202604201515;;680199 Fzus53 Klot 200743 Nshlot
nearshore marine forecast national weather service chicago/romeoville il 243 am cdt Mon apr 20 2026
for waters within five nautical miles of shore on lake michigan
waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the waves, along with the average height of the highest 10 percent of the waves which will occasionally be encountered.
lmz743>745-201515- calumet harbor il to gary in-gary to burns harbor in- burns harbor to michigan city in- 243 am cdt Mon apr 20 2026
Today - East winds around 5 kt increasing to 10 to 15 kt in the afternoon. Sunny. Waves 1 to 2 ft.
Tonight - Southeast winds 10 to 15 kt becoming south and increasing to 15 to 25 kt overnight. Partly cloudy. Waves 1 to 3 ft.
Tuesday - Southwest winds 15 to 25 kt increasing to 20 to 25 kt. A small craft advisory may be needed. Partly cloudy. Waves 1 to 3 ft.
Tuesday night - Southwest winds 15 to 20 kt diminishing to 10 to 15 kt and becoming west. Chance of showers and Thunderstorms in the evening. Waves 1 to 2 ft.
nearshore marine forecast national weather service chicago/romeoville il 243 am cdt Mon apr 20 2026
for waters within five nautical miles of shore on lake michigan
waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the waves, along with the average height of the highest 10 percent of the waves which will occasionally be encountered.
lmz743>745-201515- calumet harbor il to gary in-gary to burns harbor in- burns harbor to michigan city in- 243 am cdt Mon apr 20 2026
LMZ700
No data
No data
7 Day Forecast for Marine Location Near Winamac, IN
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Area Discussion for Northern Indiana, IN
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FXUS63 KIWX 200609 AFDIWX
Area Forecast Discussion National Weather Service Northern Indiana 209 AM EDT Mon Apr 20 2026
KEY MESSAGES
- Very cold this morning but trending warmer starting Tuesday.
- There is a 30% to 40% chance of showers, and perhaps a thunderstorms, Tuesday night. Thereafter, showers and thunderstorms Friday.
DISCUSSION
Issued at 209 AM EDT Mon Apr 20 2026
Very cold this morning with a freeze warning in place. Expansive 1028mb high pressure spans from Minnesota through the northern reaches of the Ohio Valley. Light wind today, mostly sunny and high temperatures creeping toward 50 degrees. High pressure continues its influence tonight has low temperatures tumble into the 30s once more. However, a developing southerly wind near 5 to 10 mph may be enough to limit frost formation.
Sharply warmer Tuesday through at least Friday with high pressure and upper-level troughing transitioning to somewhat zonal flow aloft. An orphaned frontal zone drags through the Midwest Tuesday night. This front encounters warm, moist flow from the Gulf amid continued Southeast US high pressure (significant need for rain in the Carolinas) and sparks scattered showers and perhaps a thunderstorm for the overnight hours.
An upper-level ridge is maximized overhead Thursday when temperatures near 80 are forecast, before a cold front arrives from west to east late Friday afternoon. Upper-level energy with this system is focused over the upper-Great Lakes as the parent low occludes, but a developing secondary 500-mb jet may provide enough upper-level support for thunderstorms. Drier for the weekend with temperatures closer to more seasonable levels; 60s/40s high/low.
AVIATION /06Z TAFS THROUGH 06Z TUESDAY/
Issued at 1237 AM EDT Mon Apr 20 2026
With expansive high pressure in place, the inherited TAFs were in great shape. Light and variable wind attempts to become westerly this afternoon.
IWX WATCHES/WARNINGS/ADVISORIES
IN...Freeze Warning until 11 AM EDT /10 AM CDT/ this morning for INZ005>009-012>015-017-018-020-022>027-032>034-103-104- 116-203-204-216.
OH...Freeze Warning until 11 AM EDT this morning for OHZ001-002-004- 005-015-016-024-025.
MI...Freeze Warning until 11 AM EDT this morning for MIZ078>081-177- 277.
MARINE...None.
Area Forecast Discussion National Weather Service Northern Indiana 209 AM EDT Mon Apr 20 2026
KEY MESSAGES
- Very cold this morning but trending warmer starting Tuesday.
- There is a 30% to 40% chance of showers, and perhaps a thunderstorms, Tuesday night. Thereafter, showers and thunderstorms Friday.
DISCUSSION
Issued at 209 AM EDT Mon Apr 20 2026
Very cold this morning with a freeze warning in place. Expansive 1028mb high pressure spans from Minnesota through the northern reaches of the Ohio Valley. Light wind today, mostly sunny and high temperatures creeping toward 50 degrees. High pressure continues its influence tonight has low temperatures tumble into the 30s once more. However, a developing southerly wind near 5 to 10 mph may be enough to limit frost formation.
Sharply warmer Tuesday through at least Friday with high pressure and upper-level troughing transitioning to somewhat zonal flow aloft. An orphaned frontal zone drags through the Midwest Tuesday night. This front encounters warm, moist flow from the Gulf amid continued Southeast US high pressure (significant need for rain in the Carolinas) and sparks scattered showers and perhaps a thunderstorm for the overnight hours.
An upper-level ridge is maximized overhead Thursday when temperatures near 80 are forecast, before a cold front arrives from west to east late Friday afternoon. Upper-level energy with this system is focused over the upper-Great Lakes as the parent low occludes, but a developing secondary 500-mb jet may provide enough upper-level support for thunderstorms. Drier for the weekend with temperatures closer to more seasonable levels; 60s/40s high/low.
AVIATION /06Z TAFS THROUGH 06Z TUESDAY/
Issued at 1237 AM EDT Mon Apr 20 2026
With expansive high pressure in place, the inherited TAFs were in great shape. Light and variable wind attempts to become westerly this afternoon.
IWX WATCHES/WARNINGS/ADVISORIES
IN...Freeze Warning until 11 AM EDT /10 AM CDT/ this morning for INZ005>009-012>015-017-018-020-022>027-032>034-103-104- 116-203-204-216.
OH...Freeze Warning until 11 AM EDT this morning for OHZ001-002-004- 005-015-016-024-025.
MI...Freeze Warning until 11 AM EDT this morning for MIZ078>081-177- 277.
MARINE...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| BHRI3 - Burns Harbor, IN | 46 mi | 61 min | SE 1G | 39°F | 30.31 | |||
| MCYI3 - Michigan City, IN | 47 mi | 51 min | SSE 4.1G | 35°F | 30.31 | 35°F |
Wind History for Calumet Harbor, IL
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Link to 1 hour of 5 minute data for KOXI
Terminal Aerodrome Forecast (TAF) for KOXI
Wind History Graph: OXI
(wind in knots)
GEOS Local Image of great lakes
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Northern Indiana, IN,
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