Sunday, December15, 2019
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Marine Weather and Tides
Beloit, WI

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:17AMSunset 4:25PM Sunday December 15, 2019 8:08 AM CST (14:08 UTC) Moonrise 9:07PMMoonset 11:23AM Illumination 85% Phase: Waning Gibbous; Moon at 19 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- 706 Am Cst Sun Dec 15 2019
Today..Northwest wind 10 to 15 knots with gusts to around 20 knots backing west late in the morning, then easing to 5 to 10 knots early in the afternoon becoming west 5 to 10 knots late in the afternoon. Mostly Sunny. Waves around 1 foot.
Tonight..West wind 5 to 10 knots veering northwest early in the morning. Slight chance of snow after midnight. Waves around 1 foot.
Monday..Northwest wind 5 to 10 knots. Mostly cloudy. Waves around 1 foot.
Monday night..Northwest wind 5 to 10 knots rising to 10 to 15 knots late in the evening, then becoming northwest 10 to 15 knots after midnight. Mostly cloudy. Waves around 1 foot. Wave heights are for ice free areas.
LMZ646 Expires:201912151700;;821965 FZUS53 KMKX 151306 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 706 AM CST Sun Dec 15 2019 For waters within five nautical miles of shore on Lake Michigan LMZ646-151700-


7 Day Forecast for Marine Location Near Beloit, WI
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location: 42.52, -89.05     debug


Area Discussion for - Milwaukee/Sullivan, WI
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FXUS63 KMKX 151123 AFDMKX

Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 523 AM CST Sun Dec 15 2019

UPDATE. No updates to the previous discussion.

AVIATION(12Z TAFS). VFR conditions are expected through the forecast period with northwest winds decreasing through the day. Clouds will increase tonight with ceilings around 5,000 to 8,000 feet late tonight. Areas along the WI/IL border may briefly see MVFR ceilings between 06-10Z Monday.

PREV DISCUSSION. (Issued 336 AM CST Sun Dec 15 2019)

SHORT TERM .

Today through Monday . Forecast Confidence is High . Quiet conditions are expected for today and tomorrow as high pressure sits over the area. Mostly sunny skies will give way to more clouds tonight as a low pressure system passes to the south. The dry air associated with the high pressure is expected to keep precipitation south of the area, but flurries can't be completely ruled out along the state line as 850mb convergence may briefly overcome the dry air. Clouds will linger into Monday, but temperatures will be warmer with highs in the mid 20s to low 30s.

Monday night through Tuesday night . Forecast confidence high.

A large upper low and associated sfc low will track from south central Canada to New England during this period. The sfc low will gradually deepen as it does so. Ahead of this feature, a west to east sfc ridge will shift south across srn WI Mon nt-Tue AM. Modest wly winds will prevail on Tue shifting nwly for Tue nt with a dry cold frontal passage. A cold night, mostly in the single digits, is forecast for Tue nt.

LONG TERM . Wednesday through Saturday . Forecast confidence medium.

Will continue to use the ECMWF and NBM as guidance in the extended fcst. Polar high pressure will arrive for Wed with a cold day expected. Milder temps are then expected the remainder of the week as sly flow and warm advection develops ahead of an approaching shortwave trough from the wrn USA. A weak cold frontal passage will eventually occur on Sat. The airmass may remain dry enough for no precipitation.

AVIATION(06Z TAFS) .

MVFR ceilings are clearing this morning with VFR conditions expected for the remainder of the day. Winds will be from the northwest and decrease through the day becoming light and variable this evening. Clouds will move back in from the south tonight with ceilings around 7,000 to 10,000 feet.

MARINE . Northwest winds will decrease today as high pressure builds in. Light winds will then continue until Tuesday as deepening low pressure system develops over southern Ontario. Winds will increase from the northwest through Tuesday with gusts up to 30 knots Tuesday night into Wednesday morning. A Small Craft Advisory may be needed for the nearshore waters Tuesday night.

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

Update . RAH Today/Tonight and Aviation/Marine . RAH Monday THROUGH Saturday . Gehring


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KNSW3 - Kenosha, WI 66 mi68 min WNW 11 G 15 15°F 1017.6 hPa (+2.0)
MLWW3 - Milwaukee, WI 70 mi28 min WNW 4.1 G 6 14°F

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Janesville-Rock County, WI7 mi83 minN 010.00 miClear12°F8°F85%1018.3 hPa
Rockford, Greater Rockford Airport, IL22 mi74 minWNW 610.00 miOvercast18°F12°F77%1020.2 hPa

Link to 5 minute data for KJVL

Wind History from JVL (wind in knots)
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Last 24hrNW10NW12NW10NW12NW13NW13NW13
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NW13NW10NW11NW11W9NW11NW13W9NW10NW11NW10N5N3CalmCalm3
1 day agoCalmCalmCalmCalmCalmW3CalmCalmCalmNW3NE4CalmCalmE3NW3CalmNW3CalmCalmCalmNW3N5NW7NW10
2 days agoS13S12
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SW12SW12SW12SW12S8SW5SW5SW5SW4CalmW3NW6NW4NW5CalmCalm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Milwaukee/Sullivan, WI (9,2,3,4)
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Ground Weather Radar Station Milwaukee, WI
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.