Thursday, September23, 2021
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Marine Weather and Tides
Pleasant Prairie, 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 6:38AMSunset 6:48PM Thursday September 23, 2021 12:43 PM CDT (17:43 UTC) Moonrise 8:16PMMoonset 9:13AM Illumination 95% Phase: Waning Gibbous; Moon at 17 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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LMZ646 Wind Point Wi To Winthrop Harbor Il- 1106 Am Cdt Thu Sep 23 2021
.gale warning in effect until 1 pm cdt this afternoon...
Rest of today..North wind 15 to 25 knots with gusts to around 30 knots. Slight chance of showers through the day. Waves 7 to 9 feet subsiding to 6 to 8 feet late in the afternoon.
Tonight..Northwest wind 10 to 20 knots with gusts to around 25 knots becoming 10 to 15 knots late in the evening, then backing west after midnight becoming west 10 to 15 knots with gusts to around 20 knots early in the morning. Partly cloudy through around midnight then clearing. Waves 5 to 7 feet subsiding to 3 to 4 feet.
Friday..West wind 10 to 15 knots backing southwest with gusts to around 20 knots late in the morning, then rising to 15 to 20 knots with gusts to around 30 knots in the afternoon. Sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the morning, then building to 2 to 4 feet in the afternoon.
Friday night..Southwest wind 15 to 20 knots with gusts to around 30 knots becoming southwest 15 to 20 knots with gusts to around 25 knots late in the evening, then veering west with gusts to around 25 knots after midnight easing to 10 to 15 knots with gusts to around 20 knots early in the morning. Rain showers likely and slight chance of Thunderstorms through the night. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight.
LMZ646 Expires:202109232200;;061094 FZUS53 KMKX 231606 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 1106 AM CDT Thu Sep 23 2021 For waters within five nautical miles of shore on Lake Michigan LMZ646-232200-


7 Day Forecast for Marine Location Near Pleasant Prairie, WI
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location: 42.52, -87.84     debug


Area Discussion for - Milwaukee/Sullivan, WI
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FXUS63 KMKX 231429 AAA AFDMKX

Area Forecast Discussion . UPDATED National Weather Service Milwaukee/Sullivan WI 929 AM CDT Thu Sep 23 2021

UPDATE. (Issued 929 AM CDT Thu Sep 23 2021)

Still looks like a few showers could brush the far east today, so will keep the low precip chances going. Might be able to bump temps up a tad given a good deal of sunshine out there, particularly away from the lake. Otherwise, the forecast looks on track for the remainder of the day.

DDV

SHORT TERM. (Issued 345 AM CDT Thu Sep 23 2021)

Today through Friday:

The surface low is in the process of retrograding into southeast Michigan this morning. The tight pressure gradient will allow for gusty northerly winds across southern WI today, especially midday. The lakeshore counties could see some light showers at times, but the source region for these showers is around 12k-15k feet with some mid level frontogenesis. There is a very dry layer between 5k and 10k ft that will diminish the shower intensity that reaches the ground. Nonetheless, any light showers, sprinkles, or drizzle that reach the ground will be driven sideways by gusty north winds up to 30 mph. It will feel a little raw at times near the lake with highs around 60.

Skies will clear tonight as the low moves away and high pressure briefly takes hold. Lows will be in the mid 40s, and we could see some fog in low spots and river valleys.

A surface low pressure trough developing over Upper Michigan and northern Wisconsin in response to an upper trough swinging through will bring warm air advection into southern WI on Friday. Winds will increase out of the southwest, especially during the afternoon, and temperatures are expected to reach the mid to upper 70s. We should see showers start to spread into central and portions of southern WI Friday afternoon. Mid level lapse rates become steep enough to allow for a little instability and warrant the mention of a slight chance for thunder.

Cronce

LONG TERM. (Issued 345 AM CDT Thu Sep 23 2021)

Friday night through Wednesday:

Rain and thunderstorms with the cold front Friday night will clear the area as the upper level trough and positive vorticity advection shift east. There is some uncertainty on if another closed low will develop and linger over the northern Great Lakes with this system. So far though this is expected to be far enough north to keep precipitation chances out of the area. Saturday will be a little cooler with highs in the 60s, but as the upper level ridge builds overhead and southerly winds return, we'll get another taste of warmer temperatures in the 70s to low 80s through most of next week.

RAH

AVIATION. (Issued 929 AM CDT Thu Sep 23 2021)

VFR conditions are likely to continue into Friday. Gusty northerly winds will persist through the day, with winds becoming lighter overnight. Breezy southwest winds will develop ahead of an approaching low and cold front by later Friday, with a chance for showers late afternoon and into the evening as the front moves through.

DDV

MARINE. (Issued 345 AM CDT Thu Sep 23 2021)

No change to the marine headlines. Winds will be highest for the whole lake this morning with gale force gusts up to 40 kt. Look for winds to diminish from north to south this afternoon and evening. Gusty southerly winds are expected Friday afternoon and evening, with a few gale force gusts possible for the south half. Look for an abrupt wind shift from south to west Friday night with a cold front moving through.

Cronce

BEACHES. (Issued 345 AM CDT Thu Sep 23 2021)

Strong northerly winds with gusts of up to 35 mph will continue today. As a result, very rough waters will persist at southern Wisconsin beaches with waves of 6 to 10 feet. Dangerous currents will be likely and conditions will be dangerous for even the strongest of swimmers. Swimming is not advised until conditions improve going into Friday.

Cronce

MKX WATCHES/WARNINGS/ADVISORIES. WI . Beach Hazards Statement . WIZ052-WIZ060-WIZ066-WIZ071-WIZ072 until 7 PM Thursday.

LM . Gale Warning . LMZ080-LMZ366-LMZ565-LMZ567-LMZ669-LMZ671-LMZ673- LMZ675-LMZ777-LMZ779-LMZ868-LMZ870-LMZ872-LMZ874-LMZ876- LMZ878 until 4 PM Thursday.

Gale Warning . LMZ261-LMZ362-LMZ364-LMZ563-LMZ643-LMZ644-LMZ645- LMZ646 until 1 PM Thursday.



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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
45187 4 mi53 min NNW 14 G 18 57°F 60°F5 ft
KNSW3 - Kenosha, WI 5 mi43 min NNW 17 G 25 59°F 1013.9 hPa (-1.0)
45186 11 mi53 min 16 G 19 60°F 66°F3 ft
WHRI2 - Waukegan Harbor, IL 11 mi103 min N 20 G 25 58°F
45174 28 mi53 min NNW 16 G 23 65°F8 ft1013.9 hPa
MLWW3 - Milwaukee, WI 34 mi53 min N 16 G 22 58°F
45013 40 mi43 min NNW 21 G 27 60°F 64°F1013.5 hPa (-1.4)
45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI 44 mi43 min NNW 23 G 29 59°F 67°F1011.5 hPa52°F
OKSI2 44 mi103 min N 5.1 G 9.9 61°F
45198 46 mi53 min NW 18 G 27 60°F 63°F6 ft51°F
CNII2 47 mi43 min W 8.9 G 15 60°F 43°F

Wind History for Calumet Harbor, IL
(wind in knots)    EDIT      (on/off)   Help
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Last
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NW9
G17
NW8
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G16
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W8
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G13
NW13
G18
W7
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1 day
ago
N8
G11
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G12
N14
G18
N11
G17
N11
G18
N10
G14
N13
G19
NW7
G15
N13
G17
N16
G21
N17
G26
N15
G23
N16
G22
N14
G22
N16
G22
N13
G19
N14
G23
N17
G25
N17
G23
N13
G23
N16
G23
2 days
ago
S11
G15
S9
G19
SE9
G15
S7
G16
SE14
G19
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G18
SE10
G14
SE13
G18
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G23
S16
G20
S14
G22
S17
G22
S15
G20
S12
G16
S8
G11
SW7
G10
SW6
G11
S8
S5
SW4
G7
NW7
G19
NW8
G13
N9
G16
N8
G12

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kenosha, Kenosha Regional Airport, WI7 mi50 minNNW 12 G 2310.00 miFair63°F41°F45%1013.9 hPa
Chicago/Waukegan Regional Airport, IL7 mi48 minNNW 8 G 1710.00 miMostly Cloudy61°F44°F54%1013.5 hPa
Racine, Batten International Airport, WI17 mi50 minN 15 G 2710.00 miFair60°F41°F50%1014.1 hPa

Link to 5 minute data for KENW

Wind History from ENW (wind in knots)
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Last 24hrN15
G28
N16
G28
N13
G26
N17
G28
N14
G23
N11
G21
N8N7N7N7N9
G18
N9
G17
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G19
N7
G17
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G15
N8NW9N8
G17
NW6
G17
NW7NW11
G19
N12
G22
NW13
G24
NW12
G23
1 day agoNW9
G16
N6NW9
G16
N10
G17
N7NE3N4N3N3NW4NW4N6N5N9N6N11
G18
N8N11
G20
N10
G18
NW9
G18
N12
G25
N13
G23
N10
G19
N12
G22
2 days agoS13S13
G19
S10
G17
S12
G19
SE9S9S13S10S10
G18
S11S12
G19
S15
G23
S13
G20
W17
G28
SW10
G17
SW11W10NW10NW7NW6NW7
G15
--NW7
G20
NW8
G18

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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