Marine Weather and Tides
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 5:16AM||Sunset 8:42PM||Monday June 21, 2021 2:22 AM CDT (07:22 UTC)||Moonrise 5:16PM||Moonset 2:49AM||Illumination 86%|
7 Day Forecast for Marine Location Near Monona, WIHourly EDIT Help
Area Discussion for - Milwaukee/Sullivan, WI  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KMKX 210140 AFDMKX
Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 840 PM CDT Sun Jun 20 2021
UPDATE. (Issued 834 PM CDT Sun Jun 20 2021)
Thunderstorm moving toward Rock county showing nice elevated core. Will be watching closely for pulling trigger on SVR. Otherwise, expect scattered showers and storms to continue through the late evening as short wave trof and cold front move through. Instability gradient draped across northern Il will continue to allow stronger storms to flirt with the far south.
SHORT TERM. (Issued 446 PM CDT Sun Jun 20 2021)
Tonight and Monday:
Widespread rain and clouds continue to hold back any potential instability ahead of approaching low pressure and associated cold front. Some clearing well west of the forecast area has allowed for storms to fire this afternoon. The storms will continue to head this way late afternoon into the evening, with current timing putting the main line into the western forecast area by around 9 pm. Starting to see some models catch on to the lack of instability here though, suggesting storms may largely wipeout or at least decrease in intensity as they arrive. With some sunshine not too far to the west/southwest of the forecast area, could still see some CAPE get pulled into the area ahead of the front, so will hang on to the potential for some strong to severe storms later evening into tonight, particularly toward Illinois.
Any showers/storms that do survive through southern Wisconsin are expected to exit to the east by 12 or 1 am as the cold front pushes through. Gusty winds and lingering clouds are expected behind the front into Monday, with some sunshine possible by afternoon. Cooler temps aloft and the lingering clouds will result in temps not getting out of the 60s most locations, though a few places east may crack 70.
LONG TERM. (Issued 446 PM CDT Sun Jun 20 2021)
Monday night through Sunday:
Brief period of much cooler air arrives Monday night into Tuesday under northwest flow aloft. Min temps Tuesday morning should be into the 40s region wide!
Southwesterly low level flow quickly kicks in on the back side of the ridge with the low level jet running from the southern Plains up through Wisconsin Wednesday and will bring the next small chances for rain in Tuesday night into early Wednesday. The LLJ picks up in intensity later in the week and could lead to some better chances for seeing convection. It'll also lead to some warmer temperatures and higher sfc dew points.
AVIATION. (Issued 834 PM CDT Sun Jun 20 2021)
Scattered showers and a few thunderstorms will continue through late evening as short wave trof and cold front move through. More widespread lower clouds in the cold air advection are expected later tonight into Monday for a time, with breezy northwest winds.
MARINE. (Issued 446 PM CDT Sun Jun 20 2021)
Low pressure will continue to approach this evening, moving across northern Lake Michigan tonight. Northwest winds will pickup behind the low and associated cold front tonight into Monday, with gale force winds likely across the northern third of the lake. Winds may approach gale force at times farther south. Kept the Small Craft Advisory timing as is and issued a Gale Warning for Monday into mid-afternoon for the northern 1/3 of Lake Michigan. Lighter winds are then expected Monday night into Tuesday as high pressure moves through the region.
MKX WATCHES/WARNINGS/ADVISORIES. WI . None. LM . Gale Warning . LMZ261-LMZ362-LMZ364-LMZ563 . 7 AM Monday to 3 PM Monday.
Small Craft Advisory . LMZ643-LMZ644-LMZ645-LMZ646 . 1 AM Monday to 3 PM Monday.
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Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|MLWW3 - Milwaukee, WI||76 mi||42 min||WSW 6 G 7||69°F|
|PWAW3 - Port Washington, WI||80 mi||42 min||W 4.1 G 6||65°F||998 hPa|
|KNSW3 - Kenosha, WI||87 mi||82 min||SSW 5.1 G 6||68°F||998 hPa (-4.0)|
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Madison, Dane County Regional-Truax Field, WI||5 mi||29 min||WNW 9||10.00 mi||Overcast||68°F||64°F||87%||998.2 hPa|
|Middleton Muni - Morey Field, WI||12 mi||27 min||WNW 9 G 18||10.00 mi||Overcast||68°F||64°F||87%||999.7 hPa|
Link to 5 minute data for KMSN
Wind History from MSN (wind in knots)
|1 day ago||NW||E||S||SE||SE||Calm||NW||N||N||N|
|2 days ago||S|
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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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