Marine Weather and Tide Forecast for La Porte, IN
 | Sunrise 5:13 AM Sunset 8:25 PM Moonrise 3:57 PM Moonset 1:24 AM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
LMZ046 Expires:202606242000;;830215 Fzus53 Kiwx 241500 Nshiwx
nearshore marine forecast national weather service northern indiana 1100 am edt Wed jun 24 2026
for waters within five nautical miles of shore on lake michigan
lmz043-046-242000- new buffalo mi to st joseph mi-michigan city in to new buffalo mi- 1100 am edt Wed jun 24 2026
Rest of today - South winds 5 to 10 knots becoming southeast. Showers likely late this morning, then showers likely with a chance of Thunderstorms early this afternoon. A chance of showers and Thunderstorms late. Waves 1 foot or less.
Tonight - Southeast winds 5 to 10 knots becoming southwest. Showers likely with a chance of Thunderstorms in the evening, then a chance of showers with a slight chance of Thunderstorms overnight. Waves 1 foot or less.
Thursday - Southwest winds 10 knots or less becoming northwest. Partly Sunny. Waves 1 foot or less.
Thursday night - North winds 10 knots or less becoming northeast. Partly cloudy in the evening, then becoming mostly cloudy. Waves 1 foot or less.
winds and waves higher in and near Thunderstorms.
the water temperature at st. Joseph is 50 degrees and at michigan city is 54 degrees.
nearshore marine forecast national weather service northern indiana 1100 am edt Wed jun 24 2026
for waters within five nautical miles of shore on lake michigan
lmz043-046-242000- new buffalo mi to st joseph mi-michigan city in to new buffalo mi- 1100 am edt Wed jun 24 2026
winds and waves higher in and near Thunderstorms.
the water temperature at st. Joseph is 50 degrees and at michigan city is 54 degrees.
LMZ005
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7 Day Forecast for Marine Location Near La Porte, IN
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Area Discussion for Northern Indiana, IN
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FXUS63 KIWX 241724 AFDIWX
Area Forecast Discussion National Weather Service Northern Indiana 124 PM EDT Wed Jun 24 2026
KEY MESSAGES
- Increasing chance for showers and thunderstorms late this afternoon (30-60% chance). Drying out after midnight early Thursday.
- Additional chances (30-70%) for showers and embedded storms late Thursday night into Friday, best chances south of US-24.
- Becoming hot and humid next week with highs in the 90s as early as Monday.
DISCUSSION
Issued at 211 AM EDT Wed Jun 24 2026
High pressure gradually gives way to modest low pressure, currently swirling over far northern Minnesota. As a result, look for increasing clouds followed by a 30-60% chance for showers and at least isolated thunderstorms late this afternoon. Showers and storms will continue to drift southeast through at least 2am EDT Thursday.
Instability is a limiting factor to storm development this afternoon, clocking in around 500 j/kg. Paired with 30-35 knots of 0- 6km shear, cannot completely rule out a strong storm, yet lapse rates of only 6C/km could be a limiting factor too.
The low's associated cold front hangs up south of US 24 Thursday morning, threatening to serve as a focus for renewed showers.
However, any beneficial moisture resides south of the forecast area resulting in only isolated afternoon showers (20% chance) as a 50- knot 500mb jet rotates through. Almost similar to what we experienced over the weekend, a compact low moves through central Indiana Thursday night and Friday brining a period of steady rain to at least southern portions of our forecast area.
Beyond that, it looks like we're going to pay for what has been a pleasant (cool) mid-June period. Starting Sunday, a strong ridge develops over the eastern US sending our high temperatures to the 90s by Monday. There are some daily uncertainties as passing thunderstorm complexes can dampen any high temperature forecast, but overall, the heat is on. There is some indication this 594-597dm ridge may persist into the 4th of July Weekend.
AVIATION /18Z TAFS THROUGH 18Z THURSDAY/
Issued at 119 PM EDT Wed Jun 24 2026
Despite showers moving into the area this afternoon and evening, VFR conditions will generally prevail except perhaps in any heavier downpours. Instability and lapse rates are lacking for sustained convection and thunderstorms, but CAMS do show some increased activity near SBN this evening. Wind will remain less than 10 knots through Thursday morning, then shift westerly Thursday afternoon and increase to around 12 kts.
IWX WATCHES/WARNINGS/ADVISORIES
IN...None.
OH...None.
MI...None.
MARINE...None.
Area Forecast Discussion National Weather Service Northern Indiana 124 PM EDT Wed Jun 24 2026
KEY MESSAGES
- Increasing chance for showers and thunderstorms late this afternoon (30-60% chance). Drying out after midnight early Thursday.
- Additional chances (30-70%) for showers and embedded storms late Thursday night into Friday, best chances south of US-24.
- Becoming hot and humid next week with highs in the 90s as early as Monday.
DISCUSSION
Issued at 211 AM EDT Wed Jun 24 2026
High pressure gradually gives way to modest low pressure, currently swirling over far northern Minnesota. As a result, look for increasing clouds followed by a 30-60% chance for showers and at least isolated thunderstorms late this afternoon. Showers and storms will continue to drift southeast through at least 2am EDT Thursday.
Instability is a limiting factor to storm development this afternoon, clocking in around 500 j/kg. Paired with 30-35 knots of 0- 6km shear, cannot completely rule out a strong storm, yet lapse rates of only 6C/km could be a limiting factor too.
The low's associated cold front hangs up south of US 24 Thursday morning, threatening to serve as a focus for renewed showers.
However, any beneficial moisture resides south of the forecast area resulting in only isolated afternoon showers (20% chance) as a 50- knot 500mb jet rotates through. Almost similar to what we experienced over the weekend, a compact low moves through central Indiana Thursday night and Friday brining a period of steady rain to at least southern portions of our forecast area.
Beyond that, it looks like we're going to pay for what has been a pleasant (cool) mid-June period. Starting Sunday, a strong ridge develops over the eastern US sending our high temperatures to the 90s by Monday. There are some daily uncertainties as passing thunderstorm complexes can dampen any high temperature forecast, but overall, the heat is on. There is some indication this 594-597dm ridge may persist into the 4th of July Weekend.
AVIATION /18Z TAFS THROUGH 18Z THURSDAY/
Issued at 119 PM EDT Wed Jun 24 2026
Despite showers moving into the area this afternoon and evening, VFR conditions will generally prevail except perhaps in any heavier downpours. Instability and lapse rates are lacking for sustained convection and thunderstorms, but CAMS do show some increased activity near SBN this evening. Wind will remain less than 10 knots through Thursday morning, then shift westerly Thursday afternoon and increase to around 12 kts.
IWX WATCHES/WARNINGS/ADVISORIES
IN...None.
OH...None.
MI...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| MCYI3 - Michigan City, IN | 14 mi | 49 min | SE 9.9G | 62°F | 30.04 | 62°F | ||
| 45170 | 18 mi | 49 min | SSE 9.7G | 62°F | 64°F | 1 ft | 29.44 | 58°F |
| BHRI3 - Burns Harbor, IN | 23 mi | 59 min | SSE 7G | 30.08 | ||||
| 45026 - St. Joseph, MI | 28 mi | 49 min | SE 5.8G | 60°F | 57°F | 1 ft | 30.09 | 55°F |
| CMTI2 - 9087044 - Calumet, IL | 45 mi | 51 min | SSW 1.9G |
Wind History for Calumet Harbor, IL
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
| KPPO La Porte Municipal Airport US | 2 sm | 23 min | ESE 04 | 10 sm | Overcast | 63°F | 63°F | 100% | 30.09 | |
| KMGC Michigan City Municipal Airport US | 10 sm | 23 min | calm | 10 sm | Overcast | 59°F | 55°F | 88% | 30.08 | |
| KOXI Starke County Airport US | 18 sm | 23 min | E 06 | 10 sm | Overcast | 70°F | 61°F | 73% | 30.08 | |
| KVPZ Porter County Municipal Airport US | 18 sm | 42 min | ESE 04 | 10 sm | Overcast | 64°F | 57°F | 77% | 30.08 | |
| KSBN South Bend International Airport US | 22 sm | 44 min | ENE 05 | 10 sm | Overcast | 63°F | 57°F | 83% | 30.09 |
Link to 5 hour of 5 minute data for KMGC
Terminal Aerodrome Forecast (TAF) for KMGC
Wind History Graph: MGC
(wind in knots)
GEOS Local Image of great lakes
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Northern Indiana, IN,
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