Marine Weather and Tide Forecast for Fontana-on-Geneva Lake, WI
May 19, 2024 2:25 AM CDT (07:25 UTC) Change Location
 | Sunrise 5:26 AM Sunset 8:14 PM Moonrise 4:32 PM Moonset 3:30 AM |
LMZ646 Wind Point Wi To Winthrop Harbor Il- 105 Am Cdt Sun May 19 2024
Rest of tonight - Southwest wind 5 to 10 knots becoming northwest 10 to 15 knots early in the morning. Slight chance of showers and Thunderstorms after midnight. Waves around 1 foot.
Sunday - North wind 10 to 15 knots with gusts to around 20 knots becoming north 10 to 15 knots late in the morning, then veering northeast early in the afternoon easing to 5 to 10 knots late in the afternoon. Sunny. Waves around 1 foot.
Sunday night - Northeast wind 5 to 10 knots veering south early in the morning. Slight chance of showers and Thunderstorms after midnight. Waves around 1 foot.
Monday - Southeast wind 5 to 15 knots becoming 10 to 15 knots late in the morning, then veering south early in the afternoon becoming south 10 to 15 knots late in the afternoon. Slight chance of Thunderstorms in the morning. Chance of showers through the day. Chance of Thunderstorms in the afternoon. Waves around 1 foot.
LMZ600
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Area Discussion for - Milwaukee/Sullivan, WI
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FXUS63 KMKX 190236 AAA AFDMKX
Area Forecast Discussion...UPDATED National Weather Service Milwaukee/Sullivan WI 936 PM CDT Sat May 18 2024
KEY MESSAGES
- Isolated thunderstorms this evening, especially northwest of Madison. Gusty winds possible.
- Unsettled Monday and Tuesday with several rounds of rain/storms.
- Increased risk for strong/severe storms Tuesday and Tuesday evening.
UPDATE
Issued 936 PM CDT Sat May 18 2024
The incoming cold front has struggled to produce much in the way of showers/storms so far this evening. Isolated activity has pulsed up and down toward the Dells, with better sustained updrafts in/around Waupaca.
There will remain enough convergence to maintain a risk of isolated showers and storms into the early overnight hours, mainly north the I-94 corridor. Loss of daytime heating has resulted in waning instability and an increasing cap. As a result any storms that are able to develop will be capable of lightning, small hail and perhaps a few wind gusts, though the opportunity for any gusts would be in the next hour or two.
Light southwest winds ahead of the front have allowed temperatures to stay rather warm so far this evening. The forecast has been adjusted for a slower temperature descent, though lows in the 50s continue to look good by daybreak Sunday.
Enjoy the quiet, warm day Sunday as the pattern will once again becoming active Monday and Tuesday.
Gagan
SHORT TERM
Issued 237 PM CDT Sat May 18 2024
Rest of this Afternoon through Sunday:
Temperatures have warmed into the 80s inland (70s lakeside)
this afternoon, under abundant sunshine. Deep mixing has resulted in dewpoints dropping into the 50s and low 60s in many locations, with just a few high based cu.
The main focus this evening will be on a cold front currently located to our northwest. This front and an associated pre- frontal trough will push into south central Wisconsin early this evening. Overall upper level support is weak, with the main shortwave moving across western Lake Superior. This, along with the deep mixing and dry boundary layer, will probably limit convective coverage along the front. That said, the dry and well mixed boundary layer will also present a threat for strong wind gusts for any organized convection that does form, given the inverted v profile.
Convective coverage will decrease fairly quickly through the evening, with just a handful of showers/storms (if that) by the time the front reaches southeastern Wisconsin late this evening.
Skies will clear overnight, with lows in the 50s.
High pressure makes a brief appearance tomorrow, with light and variable winds and highs in the upper 70s to near 80. With the light wind profile, expect a well-developed lake breeze to move inland during the afternoon hours.
Boxell
LONG TERM
Issued 237 PM CDT Sat May 18 2024
Sunday Night through Saturday:
Scattered showers and storms will develop overnight Sunday night into Monday morning as a strong low level jet noses into the area. Hail will be possible with a few of the strongest storms.
Additional thunderstorms are possible during the day Monday, depending on the timing of a shortwave moving through the area.
If the wave moves through during the morning as currently expected, there may be enough capping/subsidence in the afternoon to limit additional precipitation. However, a slower progression would favor more convective development in the afternoon, including the potential for a few stronger storms.
Tuesday continues to look like our best chance for severe weather, though the situation remains somewhat messy and complex. Low pressure lifting through western Iowa and southern Minnesota is expected to reach western Wisconsin by afternoon and evening, with an associated warm front lifting northward through the region. Convection will likely be ongoing north of this front Monday night and Tuesday morning, but there may be enough capping south of the warm front for a break early Tuesday afternoon. The current scenario suggests that severe thunderstorms may then develop over Iowa and northern Missouri Tuesday afternoon, and move east-northeastward Tuesday evening ahead of an advancing cold front. All modes of severe weather will be possible, though the wind and spin-up tornado threat will be greatest if convection is able to congeal into an organized convective complex by the time it reaches southern Wisconsin.
Ultimately, the location of the warm front and degree of instability that is able to develop Tuesday and Tuesday afternoon will be very key to the eventual severe weather threats.
Drier air looks to then build into the region mid week as high pressure moves through the area, with southerly flow returning late in the week/early next weekend.
Boxell
AVIATION
Issued 936 PM CDT Sat May 18 2024
Showers and storms have remain rather isolated in coverage (north and west of MSN) with the best coverage toward central and northern WI. The incoming cold front will shift winds from southwest this evening to northwest overnight, however confidence is low that a shower or storm will affect any of the area aerodromes and any mention in the TAFs will be removed with a forthcoming update.
Winds will continue to shift on Sunday, with easterly winds setting up during the afternoon. Aside from a few passing high clouds, VFR conditions are expected into Sunday evening.
Gagan
MARINE
Issued 237 PM CDT Sat May 18 2024
Southwest winds will continue this afternoon and early evening ahead of a cold front. Winds become northerly early Sunday behind the front, before becoming light and variable as high pressure moves through Sunday afternoon. Breezy southerly winds return Monday and Tuesday ahead of the next approaching low pressure system. Small Craft Advisories are likely to be needed during this time.
Boxell
MKX WATCHES/WARNINGS/ADVISORIES
WI...None.
LM...None.
Area Forecast Discussion...UPDATED National Weather Service Milwaukee/Sullivan WI 936 PM CDT Sat May 18 2024
KEY MESSAGES
- Isolated thunderstorms this evening, especially northwest of Madison. Gusty winds possible.
- Unsettled Monday and Tuesday with several rounds of rain/storms.
- Increased risk for strong/severe storms Tuesday and Tuesday evening.
UPDATE
Issued 936 PM CDT Sat May 18 2024
The incoming cold front has struggled to produce much in the way of showers/storms so far this evening. Isolated activity has pulsed up and down toward the Dells, with better sustained updrafts in/around Waupaca.
There will remain enough convergence to maintain a risk of isolated showers and storms into the early overnight hours, mainly north the I-94 corridor. Loss of daytime heating has resulted in waning instability and an increasing cap. As a result any storms that are able to develop will be capable of lightning, small hail and perhaps a few wind gusts, though the opportunity for any gusts would be in the next hour or two.
Light southwest winds ahead of the front have allowed temperatures to stay rather warm so far this evening. The forecast has been adjusted for a slower temperature descent, though lows in the 50s continue to look good by daybreak Sunday.
Enjoy the quiet, warm day Sunday as the pattern will once again becoming active Monday and Tuesday.
Gagan
SHORT TERM
Issued 237 PM CDT Sat May 18 2024
Rest of this Afternoon through Sunday:
Temperatures have warmed into the 80s inland (70s lakeside)
this afternoon, under abundant sunshine. Deep mixing has resulted in dewpoints dropping into the 50s and low 60s in many locations, with just a few high based cu.
The main focus this evening will be on a cold front currently located to our northwest. This front and an associated pre- frontal trough will push into south central Wisconsin early this evening. Overall upper level support is weak, with the main shortwave moving across western Lake Superior. This, along with the deep mixing and dry boundary layer, will probably limit convective coverage along the front. That said, the dry and well mixed boundary layer will also present a threat for strong wind gusts for any organized convection that does form, given the inverted v profile.
Convective coverage will decrease fairly quickly through the evening, with just a handful of showers/storms (if that) by the time the front reaches southeastern Wisconsin late this evening.
Skies will clear overnight, with lows in the 50s.
High pressure makes a brief appearance tomorrow, with light and variable winds and highs in the upper 70s to near 80. With the light wind profile, expect a well-developed lake breeze to move inland during the afternoon hours.
Boxell
LONG TERM
Issued 237 PM CDT Sat May 18 2024
Sunday Night through Saturday:
Scattered showers and storms will develop overnight Sunday night into Monday morning as a strong low level jet noses into the area. Hail will be possible with a few of the strongest storms.
Additional thunderstorms are possible during the day Monday, depending on the timing of a shortwave moving through the area.
If the wave moves through during the morning as currently expected, there may be enough capping/subsidence in the afternoon to limit additional precipitation. However, a slower progression would favor more convective development in the afternoon, including the potential for a few stronger storms.
Tuesday continues to look like our best chance for severe weather, though the situation remains somewhat messy and complex. Low pressure lifting through western Iowa and southern Minnesota is expected to reach western Wisconsin by afternoon and evening, with an associated warm front lifting northward through the region. Convection will likely be ongoing north of this front Monday night and Tuesday morning, but there may be enough capping south of the warm front for a break early Tuesday afternoon. The current scenario suggests that severe thunderstorms may then develop over Iowa and northern Missouri Tuesday afternoon, and move east-northeastward Tuesday evening ahead of an advancing cold front. All modes of severe weather will be possible, though the wind and spin-up tornado threat will be greatest if convection is able to congeal into an organized convective complex by the time it reaches southern Wisconsin.
Ultimately, the location of the warm front and degree of instability that is able to develop Tuesday and Tuesday afternoon will be very key to the eventual severe weather threats.
Drier air looks to then build into the region mid week as high pressure moves through the area, with southerly flow returning late in the week/early next weekend.
Boxell
AVIATION
Issued 936 PM CDT Sat May 18 2024
Showers and storms have remain rather isolated in coverage (north and west of MSN) with the best coverage toward central and northern WI. The incoming cold front will shift winds from southwest this evening to northwest overnight, however confidence is low that a shower or storm will affect any of the area aerodromes and any mention in the TAFs will be removed with a forthcoming update.
Winds will continue to shift on Sunday, with easterly winds setting up during the afternoon. Aside from a few passing high clouds, VFR conditions are expected into Sunday evening.
Gagan
MARINE
Issued 237 PM CDT Sat May 18 2024
Southwest winds will continue this afternoon and early evening ahead of a cold front. Winds become northerly early Sunday behind the front, before becoming light and variable as high pressure moves through Sunday afternoon. Breezy southerly winds return Monday and Tuesday ahead of the next approaching low pressure system. Small Craft Advisories are likely to be needed during this time.
Boxell
MKX WATCHES/WARNINGS/ADVISORIES
WI...None.
LM...None.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| KNSW3 - Kenosha, WI | 40 mi | 26 min | SSW 4.1G | 72°F | 29.85 | |||
| 45186 | 42 mi | 36 min | 3.9G | 62°F | 57°F | 1 ft | ||
| 45187 | 42 mi | 36 min | 5.8G | 58°F | 55°F | 1 ft | ||
| MLWW3 - Milwaukee, WI | 48 mi | 36 min | WSW 6G | 73°F |
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KBUU BURLINGTON MUNI,WI | 17 sm | 10 min | WSW 03 | 10 sm | Clear | 70°F | 59°F | 69% | 29.88 |
Milwaukee, WI,
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