Sunday, September19, 2021
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Marine Weather and Tides
Madison, WI

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:40AMSunset 7:01PM Sunday September 19, 2021 9:08 AM CDT (14:08 UTC) Moonrise 6:55PMMoonset 4:56AM Illumination 96% Phase: Waxing Gibbous; Moon at 13 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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LMZ644 Port Washington To North Point Light Wi- 706 Am Cdt Sun Sep 19 2021
Today..South wind 5 to 10 knots rising to 10 to 15 knots late in the morning, then backing southeast in the afternoon. Sunny. Waves 2 to 4 feet.
Tonight..Southeast wind 10 to 15 knots veering south after midnight. Partly cloudy. Waves 1 to 3 feet building to 2 to 4 feet early in the morning.
Monday..South wind 10 to 15 knots rising to 15 to 20 knots with gusts to around 25 knots in the late morning and afternoon. Slight chance of Thunderstorms in the morning. Chance of showers through the day. Chance of Thunderstorms in the afternoon. Waves 3 to 4 feet building to 4 to 6 feet.
Monday night..South wind 15 to 20 knots becoming west 10 to 15 knots early in the morning. Gusts up to 25 knots. Chance of showers through around midnight. Chance of Thunderstorms through the night. Showers after midnight. Waves 4 to 6 feet subsiding to 3 to 4 feet early in the morning.
LMZ644 Expires:202109191600;;852391 FZUS53 KMKX 191207 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 706 AM CDT Sun Sep 19 2021 For waters within five nautical miles of shore on Lake Michigan LMZ644-191600-


7 Day Forecast for Marine Location Near Madison, WI
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location: 43.09, -89.43     debug


Area Discussion for - Milwaukee/Sullivan, WI
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FXUS63 KMKX 190830 AFDMKX

Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 330 AM CDT Sun Sep 19 2021

SHORT TERM. (Issued 330 AM CDT Sun Sep 19 2021)

Today:

High pressure over the eastern Great Lakes will continue to slowly push eastward throughout the day. This will allow southerly winds to develop and bring with it a much warmer air mass. Highs today are expected to be in the mid to upper 80s with a few areas hitting 90 towards south central and southwestern Wisconsin. Areas along Lake Michigan will be cooler in the 70s to low 80s. These temperatures are 10-20 degrees above normal for this time of year and Madison will only be a few degrees from its record daily high of 93 degrees set in 1948. Enjoy one of the last summer-like days and stay hydrated!

Tonight through Monday:

The remnants of Nicholas will be absorbed into the upper level flow and slowly track towards southern Wisconsin late tonight into Monday. The remnants will bring some 850mb warm air advection, moisture, and unorganized positive vorticity advection to the area causing some scattered showers and maybe a few thunderstorms for the morning and afternoon hours. Cloud cover and showers will help to keep temperatures cooler than today with highs in the mid to upper 70s across the area. It'll also be a bit breezy as the pressure gradient tightens ahead of a cold front to the west with gusts around 20-30 mph.

RAH

LONG TERM. (Issued 330 AM CDT Sun Sep 19 2021)

Monday night through Saturday:

An upper level trough is expected to lift across the northern Great Lakes Region Monday night into Tuesday. The associated surface low in central Canada is expected to deepen as it moves into the Hudson Bay area. This low will drag a cold front across Wisconsin Monday night into Tuesday. As the front moves through a line of showers/storms will develop. Out ahead of the front in the warm sector, the southerly winds are expected to be strong and breezy. Prolonged warm air and moisture advection will give southern Wisconsin PWAT values of 1.5 to 2 inches, which is above normal for this time of year. Its difficult to pinpoint the exact amounts of rainfall as guidance continues to show the upper level trough as a progressive quick moving wave. This could limit the amount of rainfall if the front moves through to quickly. The front is expected to clear southern Wisconsin Tuesday morning.

Cold air advection will set up behind the front bringing much cooler and drier weather to southern Wisconsin. Day time temperatures are expected to top off in the 60s and the overnight temperatures are expected to fall into the low 50s to mid 40s. The cool and dry weather is expected to persist across southern Wisconsin through the end of the work week. Looking into the weekend, guidance seems to be very polarizing with not much agreement between members or from run to run. There are some hints of another potential system, but given the uncertainty its to soon to say anything for certain.

Patterson

AVIATION. (Issued 330 AM CDT Sun Sep 19 2021)

VFR conditions are expected through most of the forecast period. Light southeast to south winds are expected with a few cumulus clouds around 3500-5000 feet possible this afternoon. Some MVFR- IFR ceilings may move just north of the WI/IL border prior to 12Z Monday. These low ceilings will continue to push to the north through Sunday morning along with some scattered showers.

RAH

MARINE. (Issued 330 AM CDT Sun Sep 19 2021)

South to southeast winds continue through the day as high pressure over the eastern Great Lakes slowly shifts to the east. Winds and waves increase Monday into Monday night as the pressure gradient tightens ahead of a cold front that will push through late Monday night into early Tuesday morning. Winds and waves are expected to hit Small Craft Advisory levels late Monday morning into Tuesday morning and winds could approach gales Monday night into Tuesday morning for the open waters. Behind the front breezy northwest to north winds are expected into Thursday.

RAH

MKX WATCHES/WARNINGS/ADVISORIES. WI . None. LM . None.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MLWW3 - Milwaukee, WI 82 mi29 min E 1.9 G 1.9 71°F
PWAW3 - Port Washington, WI 85 mi89 min W 1.9 G 2.9 62°F 1022 hPa
KNSW3 - Kenosha, WI 93 mi69 min SE 2.9 G 4.1 69°F 1020.7 hPa (+0.7)

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Madison, Dane County Regional-Truax Field, WI6 mi76 minN 010.00 miA Few Clouds57°F54°F90%1020.1 hPa
Middleton Muni - Morey Field, WI6 mi74 minN 010.00 miFair60°F57°F90%1020.3 hPa

Link to 5 minute data for KMSN

Wind History from MSN (wind in knots)
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Last 24hrNE4E7E10E734SE3E4SE7E8E8SE8SE8E7SE5SE5E3CalmCalmCalmCalmCalmCalmCalm
1 day agoSW55S756
G15
NW7NW5NW6NW6
G16
N12
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N9NW5N4N3CalmCalmCalmCalmN4N3N4N3N4N3
2 days agoS9S10S12
G19
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G20
S12S14
G22
S16
G21
S11S12S8S6S6S6S5S5S5S6S6S6S3S4S7SW5

Tide / Current Tables for
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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