Marine Weather and Tide Forecast for Milwaukee, WI
April 28, 2025 1:05 PM CDT (18:05 UTC)
Change Location
Change Location
 | Sunrise 5:47 AM Sunset 7:51 PM Moonrise 5:58 AM Moonset 9:37 PM |
LMZ644 Port Washington To North Point Light Wi- 1105 Am Cdt Mon Apr 28 2025
.small craft advisory in effect through Tuesday afternoon - .
Rest of today - South wind 10 to 20 knots rising to 15 to 25 knots late in the afternoon. Gusts up to 30 knots. Partly Sunny. Waves 4 to 6 feet.
Tonight - South wind 15 to 20 knots becoming 10 to 20 knots late in the evening, then becoming southwest 15 to 25 knots after midnight. Gusts up to 30 knots. Slight chance of showers and Thunderstorms. Waves 4 to 6 feet subsiding to 3 to 5 feet early in the morning.
Tuesday - Southwest wind 10 to 20 knots becoming west 15 to 25 knots late in the morning, then veering northwest 15 to 20 knots early in the afternoon becoming north 10 to 15 knots late in the afternoon. Gusts up to 35 knots decreasing to 25 knots late in the afternoon. Partly Sunny. Waves 3 to 4 feet subsiding to 1 to 2 feet late in the afternoon.
Tuesday night - Northeast wind 10 to 15 knots easing to 5 to 10 knots in the late evening and early morning, then becoming northeast 5 to 10 knots early in the morning. Mostly clear. Waves 1 to 2 feet.
LMZ600
No data
No data
7 Day Forecast for Marine Location Near Milwaukee, WI
NEW! Add second zone forecast
Area Discussion for Milwaukee/Sullivan, WI
Hide HelpNOTE: mouseover dotted underlined text for definition
FXUS63 KMKX 281513 AFDMKX
Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 1013 AM CDT Mon Apr 28 2025
KEY MESSAGES
- Chance of storms (20 to 35%) through midday for areas generally west of a line from Fond du Lac to Janesville. Small hail possible with any stronger storms.
- Conditional risk of severe storms late this afternoon into early evening. Environment will be primed for all hazards (hail, wind, tornado), but uncertain if storms will initiate.
Higher probability of severe-level storms is west of a line from Sheboygan to Lake Geneva, and highest is toward Wisconsin Dells.
- Broken line of storms will be weakening as it crosses southern WI after midnight. There is a risk for severe storms with all hazards, but it will be decreasing with time.
- Warm and windy during the day today with southerly wind gusts up to 40 mph and highs near 80 degrees away from Lake Michigan. A few gusts up to 50 mph will be possible late this afternoon.
- Gale Warning in effect for the north half of Lake Michigan this afternoon through Tuesday morning. Isolated gales are possible in the south half. A Small Craft Advisory is in effect for nearshore zones through Tuesday afternoon for gusty winds and elevated waves.
UPDATE
Issued 1000 AM CDT Mon Apr 28 2025
The thoughts on the forecast for today remain the same with the newest guidance still showing a very conditional risk. The factor making this risk so conditional is the rather significant lack of forcing. Now there are some storms pushing through northeast IA right now that are currently expected to push in that carries at least a minor severe risk but this remains largely for hail. CAMs do tend to show some potential for storm activity across the northwest portions of the CWA this afternoon and again in the late evening and early overnight hours. This looks largely driven by the upper shortwave with additional influence from the LLJ.
We have started to watch for developing convection in southwest IA/northwest MO/Southeast NE that will need monitoring as the track would line up with models taking it through the northwest half of the CWA for this afternoon. In the chances that we manage some convection to push through the CWA, all hazards will be possible, especially if we get isolated storms. The issue is the environment is so favorable with strong effective shear (50-60 kts), strong effective helicity (200-300 m2/s2), strong low level helicity (100-200 m2/s2) and plenty of instability to work with (highest values do remain on northwest half of the CWA). If we get convection (especially if isolated), very strong winds, very large hail and strong tornadoes would be possible.
Again this is a conditional risk that we will be monitoring throughout the day today. Continue to monitor the weather for the latest conditions.
Kuroski
SHORT TERM
Issued 417 AM CDT Mon Apr 28 2025
Today through Tuesday:
The key word for today is CONDITIONAL. The environment will be favorable for high-end severe storms from mid afternoon through mid evening, but we will need some extra forcing to initiate the storms. Therefore, our message remains the same to be prepared for severe storms. We are just adding in more conditional wording. The other change is that the chance for severe storms (or any storms) is lower (less than 55 percent)
after midnight when that cold front finally moves through southern WI.
For this morning, thunderstorms are developing in western WI and eastern IA on the nose of a low level jet. These are not strong and will be moving into a less favorable environment in southern WI since the forcing is weak and better moisture is to our west.
Small hail is our threat with any of the stronger storms that reach us, and they should remain west of a line from Janesville to Fond du Lac through noon today.
For the middle of the day, we are expecting gusty southeast winds with gusts up to 35 mph. By mid afternoon, winds will shift to the south and with deeper mixing anticipated, along with the low level jet overhead, we could see gusts to 50 mph.
There is not enough confidence to go with a wind advisory at this time, so we will likely issue a Special Weather Statement to highlight the time of concern. There is a plume of dust appearing on satellite over KS and eastern NE early this morning, and this should be able to make it into southern WI late this afternoon and cause some hazy skies.
The cluster of strong storms (MCS) ongoing over eastern SD will decay through the morning, but the established disturbance should help to reinvigorate storms this afternoon, probably over northern WI. However, any outflow or rogue disturbances may help initiate storms over southern WI late this afternoon in the well-primed environment. If this can happen, expect explosive storm development with a high-end severe potential of all hazards. The small scale models may catch on to this MCS idea in the next few hours, but they are usually slow in this matter.
For a more detailed discussion of the severe parameters in play, please see the previous two issuances of the Forecast Discussions.
As for the front moving through overnight, this seems to keep getting delayed. With the delay, the likelihood of severe-level storms is going down and many models suggest that the line will be breaking up and dissipating by the time it reaches eastern WI early Tuesday morning.
Winds will become westerly behind the front Tuesday morning, but remain gusty (25 to 30 mph). Dry air will quickly move in so the threat of additional showers is low.
Cronce
LONG TERM
Issued 417 AM CDT Mon Apr 28 2025
Tuesday night through Sunday:
High pressure will build into the area Tuesday night, bringing quiet weather to the region through at least the first part of the day on Wednesday. By Wednesday afternoon and evening, shortwave energy emanating from a trough over the Texas Panhandle will overspread a baroclinic zone to our south, with several rounds of showers expected across the area from later Wednesday into Thursday. Coverage is expected to be greatest on Thursday as the main trough lifts through the Ohio Valley. A few rumbles of thunder will be possible during this time, but most of the elevated instability will remain south of the area.
Temperatures from Tuesday night through Thursday will be around average, with highs generally in the 60s and lows in the 40s.
Easterly flow on Wednesday will favor cooler temperatures near the lake.
A trough will swing through the area on Friday, with high pressure expected to build into the region for the weekend. A building ridge across the middle part of the US will favor warming temperatures for the latter half of the weekend and early portion of next workweek.
Boxell
AVIATION
Issued 1010 AM CDT Mon Apr 28 2025
There is a storm pushing into southwest WI currently with some lightning and perhaps some small hail and breezy winds and will track through southern WI, gradually weakening as it pushes east. This may affect the Madison area by around noon though it looks more likely to scoot just to the north, but will be something to monitor over the next few hours.
Into the afternoon the environment will be primed for severe thunderstorms with hail, damaging winds, and tornadoes possible during the late afternoon and early evening hours. We are currently monitoring some storms well to the west that may end up tracking through southwest and central portions of WI. The best potential remains in these areas with lesser chances further east. There will be additional chances in the late evening and early overnight hours as the front pushes through but models continue to show that as being fairly conditional as well with the best chances still remaining toward central and west central WI. However, storms could become more widespread than currently expected so we will continue to monitor these conditions.
VSBYs may see some impacts from storms with limited risks for MVFR CIGS until later tonight along and behind the front though likely clearing out by Tuesday afternoon.
Kuroski
MARINE
Issued 417 AM CDT Mon Apr 28 2025
Southeast winds will increase this morning as low pressure of 29.4 inches tracks into South Dakota. Winds will become gusty as the low moves into central Minnesota by late afternoon, with southerly gales developing across the north half of Lake Michigan.
Gales will continue across the north half into Tuesday morning and a Gale Warning is in effect, with no change to the timing. A few gusts to gale force are possible in the south half since winds just above the cool lake water will be gusting to over 40 kt, but gales at the lake level should not be widespread.
Meanwhile, isolated thunderstorms are possible across the northern half of the open waters this afternoon, with strong to severe thunderstorms possible across the lake this evening and overnight.
The main hazards with these storms would be damaging wind and hail. Low pressure exits into Quebec on Tuesday morning, bringing a cold front southeastward across the open waters, ending thunderstorm potential and bringing westerly winds just below gale force. Winds will diminish quickly Tuesday night as high pressure around 30.2 inches moves into the region.
The Small Craft Advisory remains in effect with no change to the timing. There is a chance for gale force gusts right along the shoreline late this afternoon, but not enough confidence to issue a gale warning at this time.
Cronce
MKX WATCHES/WARNINGS/ADVISORIES
WI...None.
LM
Gale Warning
LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-LMZ565- LMZ567-LMZ868...4 PM Monday to 10 AM Tuesday.
Small Craft Advisory...LMZ643-LMZ644-LMZ645-LMZ646 until 4 PM Tuesday.
Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 1013 AM CDT Mon Apr 28 2025
KEY MESSAGES
- Chance of storms (20 to 35%) through midday for areas generally west of a line from Fond du Lac to Janesville. Small hail possible with any stronger storms.
- Conditional risk of severe storms late this afternoon into early evening. Environment will be primed for all hazards (hail, wind, tornado), but uncertain if storms will initiate.
Higher probability of severe-level storms is west of a line from Sheboygan to Lake Geneva, and highest is toward Wisconsin Dells.
- Broken line of storms will be weakening as it crosses southern WI after midnight. There is a risk for severe storms with all hazards, but it will be decreasing with time.
- Warm and windy during the day today with southerly wind gusts up to 40 mph and highs near 80 degrees away from Lake Michigan. A few gusts up to 50 mph will be possible late this afternoon.
- Gale Warning in effect for the north half of Lake Michigan this afternoon through Tuesday morning. Isolated gales are possible in the south half. A Small Craft Advisory is in effect for nearshore zones through Tuesday afternoon for gusty winds and elevated waves.
UPDATE
Issued 1000 AM CDT Mon Apr 28 2025
The thoughts on the forecast for today remain the same with the newest guidance still showing a very conditional risk. The factor making this risk so conditional is the rather significant lack of forcing. Now there are some storms pushing through northeast IA right now that are currently expected to push in that carries at least a minor severe risk but this remains largely for hail. CAMs do tend to show some potential for storm activity across the northwest portions of the CWA this afternoon and again in the late evening and early overnight hours. This looks largely driven by the upper shortwave with additional influence from the LLJ.
We have started to watch for developing convection in southwest IA/northwest MO/Southeast NE that will need monitoring as the track would line up with models taking it through the northwest half of the CWA for this afternoon. In the chances that we manage some convection to push through the CWA, all hazards will be possible, especially if we get isolated storms. The issue is the environment is so favorable with strong effective shear (50-60 kts), strong effective helicity (200-300 m2/s2), strong low level helicity (100-200 m2/s2) and plenty of instability to work with (highest values do remain on northwest half of the CWA). If we get convection (especially if isolated), very strong winds, very large hail and strong tornadoes would be possible.
Again this is a conditional risk that we will be monitoring throughout the day today. Continue to monitor the weather for the latest conditions.
Kuroski
SHORT TERM
Issued 417 AM CDT Mon Apr 28 2025
Today through Tuesday:
The key word for today is CONDITIONAL. The environment will be favorable for high-end severe storms from mid afternoon through mid evening, but we will need some extra forcing to initiate the storms. Therefore, our message remains the same to be prepared for severe storms. We are just adding in more conditional wording. The other change is that the chance for severe storms (or any storms) is lower (less than 55 percent)
after midnight when that cold front finally moves through southern WI.
For this morning, thunderstorms are developing in western WI and eastern IA on the nose of a low level jet. These are not strong and will be moving into a less favorable environment in southern WI since the forcing is weak and better moisture is to our west.
Small hail is our threat with any of the stronger storms that reach us, and they should remain west of a line from Janesville to Fond du Lac through noon today.
For the middle of the day, we are expecting gusty southeast winds with gusts up to 35 mph. By mid afternoon, winds will shift to the south and with deeper mixing anticipated, along with the low level jet overhead, we could see gusts to 50 mph.
There is not enough confidence to go with a wind advisory at this time, so we will likely issue a Special Weather Statement to highlight the time of concern. There is a plume of dust appearing on satellite over KS and eastern NE early this morning, and this should be able to make it into southern WI late this afternoon and cause some hazy skies.
The cluster of strong storms (MCS) ongoing over eastern SD will decay through the morning, but the established disturbance should help to reinvigorate storms this afternoon, probably over northern WI. However, any outflow or rogue disturbances may help initiate storms over southern WI late this afternoon in the well-primed environment. If this can happen, expect explosive storm development with a high-end severe potential of all hazards. The small scale models may catch on to this MCS idea in the next few hours, but they are usually slow in this matter.
For a more detailed discussion of the severe parameters in play, please see the previous two issuances of the Forecast Discussions.
As for the front moving through overnight, this seems to keep getting delayed. With the delay, the likelihood of severe-level storms is going down and many models suggest that the line will be breaking up and dissipating by the time it reaches eastern WI early Tuesday morning.
Winds will become westerly behind the front Tuesday morning, but remain gusty (25 to 30 mph). Dry air will quickly move in so the threat of additional showers is low.
Cronce
LONG TERM
Issued 417 AM CDT Mon Apr 28 2025
Tuesday night through Sunday:
High pressure will build into the area Tuesday night, bringing quiet weather to the region through at least the first part of the day on Wednesday. By Wednesday afternoon and evening, shortwave energy emanating from a trough over the Texas Panhandle will overspread a baroclinic zone to our south, with several rounds of showers expected across the area from later Wednesday into Thursday. Coverage is expected to be greatest on Thursday as the main trough lifts through the Ohio Valley. A few rumbles of thunder will be possible during this time, but most of the elevated instability will remain south of the area.
Temperatures from Tuesday night through Thursday will be around average, with highs generally in the 60s and lows in the 40s.
Easterly flow on Wednesday will favor cooler temperatures near the lake.
A trough will swing through the area on Friday, with high pressure expected to build into the region for the weekend. A building ridge across the middle part of the US will favor warming temperatures for the latter half of the weekend and early portion of next workweek.
Boxell
AVIATION
Issued 1010 AM CDT Mon Apr 28 2025
There is a storm pushing into southwest WI currently with some lightning and perhaps some small hail and breezy winds and will track through southern WI, gradually weakening as it pushes east. This may affect the Madison area by around noon though it looks more likely to scoot just to the north, but will be something to monitor over the next few hours.
Into the afternoon the environment will be primed for severe thunderstorms with hail, damaging winds, and tornadoes possible during the late afternoon and early evening hours. We are currently monitoring some storms well to the west that may end up tracking through southwest and central portions of WI. The best potential remains in these areas with lesser chances further east. There will be additional chances in the late evening and early overnight hours as the front pushes through but models continue to show that as being fairly conditional as well with the best chances still remaining toward central and west central WI. However, storms could become more widespread than currently expected so we will continue to monitor these conditions.
VSBYs may see some impacts from storms with limited risks for MVFR CIGS until later tonight along and behind the front though likely clearing out by Tuesday afternoon.
Kuroski
MARINE
Issued 417 AM CDT Mon Apr 28 2025
Southeast winds will increase this morning as low pressure of 29.4 inches tracks into South Dakota. Winds will become gusty as the low moves into central Minnesota by late afternoon, with southerly gales developing across the north half of Lake Michigan.
Gales will continue across the north half into Tuesday morning and a Gale Warning is in effect, with no change to the timing. A few gusts to gale force are possible in the south half since winds just above the cool lake water will be gusting to over 40 kt, but gales at the lake level should not be widespread.
Meanwhile, isolated thunderstorms are possible across the northern half of the open waters this afternoon, with strong to severe thunderstorms possible across the lake this evening and overnight.
The main hazards with these storms would be damaging wind and hail. Low pressure exits into Quebec on Tuesday morning, bringing a cold front southeastward across the open waters, ending thunderstorm potential and bringing westerly winds just below gale force. Winds will diminish quickly Tuesday night as high pressure around 30.2 inches moves into the region.
The Small Craft Advisory remains in effect with no change to the timing. There is a chance for gale force gusts right along the shoreline late this afternoon, but not enough confidence to issue a gale warning at this time.
Cronce
MKX WATCHES/WARNINGS/ADVISORIES
WI...None.
LM
Gale Warning
LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-LMZ565- LMZ567-LMZ868...4 PM Monday to 10 AM Tuesday.
Small Craft Advisory...LMZ643-LMZ644-LMZ645-LMZ646 until 4 PM Tuesday.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| MLWW3 - Milwaukee, WI | 6 mi | 26 min | SE 15G | 54°F | ||||
| 45013 | 7 mi | 66 min | S 18G | 47°F | 43°F | 3 ft | 30.02 | |
| 45199 | 30 mi | 66 min | SSE 18 | 44°F | 40°F | 2 ft | 30.02 | |
| WHRI2 - Waukegan Harbor, IL | 49 mi | 66 min | ESE 8.9G |
Wind History for Calumet Harbor, IL
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
| KMWC LAWRENCE J TIMMERMAN,WI | 5 sm | 20 min | S 14 | 10 sm | Clear | 72°F | 54°F | 53% | 29.96 | |
| KMKE GENERAL MITCHELL INTL,WI | 8 sm | 13 min | SE 16 | 10 sm | Mostly Cloudy | 66°F | 46°F | 49% | 29.94 | |
| KUES WAUKESHA COUNTY,WI | 14 sm | 20 min | S 12G25 | 10 sm | Clear | 73°F | 54°F | 50% | 29.95 | |
| KRAC BATTEN INTL,WI | 22 sm | 12 min | SSE 14G23 | 10 sm | Clear | 64°F | 46°F | 52% | 29.99 |
Link to 1 hour of 5 minute data for KMWC
Terminal Aerodrome Forecast (TAF) for KMWC
Wind History Graph: MWC
(wind in knots)
GEOS Local Image of great lakes
Edit Hide
Milwaukee, WI,
NOTICE: Some pages have affiliate links to Amazon. As an Amazon Associate, I earn from qualifying purchases. Please read website Cookie, Privacy, and Disclamers by clicking HERE. To contact me click HERE. For my YouTube page click HERE