Tuesday, April24, 2018 L-36.com


Marine Weather and Tides
North Bay, WI

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 5:52AMSunset 7:45PM Tuesday April 24, 2018 7:07 AM CDT (12:07 UTC) Moonrise 1:57PMMoonset 3:20AM Illumination 67% Phase: Waxing Gibbous; Moon at 9 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- 506 Am Cdt Tue Apr 24 2018
.small craft advisory in effect from this evening through Wednesday evening...
Today..North wind 5 to 10 knots veering northeast late in the morning, then rising to 10 to 15 knots early in the afternoon backing north late in the afternoon. Chance of showers in the morning, then slight chance of showers late in the morning. Waves 1 to 2 feet.
Tonight..North wind 15 to 20 knots becoming 15 to 25 knots with gusts to around 30 knots in the late evening and overnight. Mostly cloudy through around midnight then becoming partly cloudy. Waves 1 to 2 feet building to 5 to 7 feet.
Wednesday..North wind 15 to 20 knots easing to 10 to 15 knots late in the afternoon. Gusts up to 25 knots. Sunny. Waves 4 to 6 feet subsiding to 3 to 5 feet late in the afternoon.
Wednesday night..North wind 5 to 10 knots becoming northwest late in the evening, then backing west after midnight rising to 5 to 10 knots early in the morning. Clear. Waves 3 to 4 feet subsiding to 1 to 2 feet after midnight.
LMZ646 Expires:201804241600;;421859 FZUS53 KMKX 241006 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 505 AM CDT Tue Apr 24 2018 For waters within five nautical miles of shore on Lake Michigan LMZ646-241600-

7 Day Forecast for Marine Location Near North Bay village, WI
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location: 42.73, -87.66     debug


Area Discussion for - Milwaukee/Sullivan, WI
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Fxus63 kmkx 240831
afdmkx
area forecast discussion
national weather service milwaukee sullivan wi
331 am cdt Tue apr 24 2018

Short term
Today and tonight... Forecast confidence is medium to high.

Weak inverted trof extending northward from slow moving low
pressure over the tn valley triggering a few light showers over
northeast il. The showers are moving NW and may affect far
southeast wi this morning. However, latest guidance shows the
upper low slightly weaker and farther south at 18z. Also, some
guidance shows the atmosphere remaining drier over the southeast
this morning. Never the less, clouds will hang on much of the day
in the southeast cwa. The clouds and winds turning onshore will
keep temps a few degrees cooler in the east over yesterday. Clouds
will be thinner over inland areas and south central wi, which
will allow temperatures to warm back into the 60s. A few spots may
reach 70 in the far west.

An upstream cold front over northern mn will sweep southward
across central and southern wi this afternoon and tonight. A few
showers will develop along the front, and may affect the northern
cwa including fond du lac and berlin later this afternoon and
evening. The bulk of of the synoptic lift with an amplifying mid-
level short wave remains north of the area tonight. Low level
lapse rates late in the afternoon are fairly impressive, in the 7
to 9 degree range, but the loss of insolation in the evening
should weaken the showers. Hence wl confine threat to northern cwa
for now.

Wednesday through Thursday night... Forecast confidence is high.

Models are in pretty good agreement with taking high pressure
southeastward across the region Wednesday, then to the southeast
Wednesday night into Thursday morning. This will result in a
period of dry conditions across the area. Cooler temperatures in
the 50s are expected for Wednesday, as north to northeast winds
gradually weaken. Cooler values in the upper 40s are expected
lakeside. Lows Wednesday night should be in the lower to middle
30s.

Models are then showing a cold front sliding southeast across the
area mainly Thursday night. This is accompanied by a passing 500
mb shortwave trough. Nam GFS forecast soundings are showing a
rather deep air column Thursday night, as these features move
through the area. Thus, continued the chance pops for this period.

May need to raise them in later forecasts if models remain
consistent with trends.

May still see a brief mix of rain and snow later Thursday night,
as temperatures fall. No accumulations are expected. Highs
Thursday should recover into the lower to middle 60s, with some
weak warm air advection. Lows Thursday night should fall back into
the middle to upper 30s.

Long term
Friday through Monday... Forecast confidence is medium.

Models suggest northwest flow at 500 mb will linger over the
region Friday into the weekend, with a ridge axis shifting east
over the region Sunday into Monday. Weak low pressure sliding
southeast across the region Friday afternoon into Friday night
should bring a cold front through the area. At this time, it looks
rather dry, so kept the forecast dry. Cooler temperatures are
expected Friday.

High pressure then slides southeast through the region Saturday
into Saturday night, bringing dry conditions with continued cool
temperatures.

A shift to south to southeast winds on Sunday are anticipated,
which should help bring milder temperatures back into most of the
area. Lakeshore areas would remain cooler with the southeast
winds. Dry conditions are expected.

A tight pressure gradient develops Sunday night into Monday, with
southwest winds becoming gusty. This will bring steady warm air
advection into the region, with much warmer temperatures possible
by Monday. Raised highs into the middle 70s for Monday, even for
areas near the lake with the gusty southwest winds. This pattern
may linger into the middle of the week, so the warm temperatures
may continue.

Aviation(09z tafs)
MainlyVFR conditions are expected for the period. However a
period of lowVFR or MVFR ceilings may affect far southeast wi
this morning, associated with weak low level convergence in
vicinity of inverted low pressure trof over lake mi. The inverted
trof gradually weakens later this morning and aftn. A few showers
may also affect northern CWA later this afternoon and evening, as
cold front approaches from the northwest.

Marine
Light offshore winds will again become north to northeast this
morning, however wind speeds will remain light, generally in the 5
to 12 knot range. A cold front currently over the northern plains
will sweep across the nearshore waters of lake michigan this
evening. A push of cold air behind the front will result in gusty
north to northeast winds tonight, gradually diminishing on
Wednesday. These winds will kick up waves of 4 to 7 feet by late
tonight, which will also slowly diminish on Wednesday. A small
craft advisory will be posted for the period.

Mkx watches warnings advisories
Wi... None.

Lm... Small craft advisory from 8 pm this evening to 7 pm cdt
Wednesday for lmz644>646.

Small craft advisory from 8 pm this evening to 1 pm cdt
Wednesday for lmz643.

Today tonight and aviation marine... mbk
Wednesday through Monday... Wood


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KNSW3 - Kenosha, WI 13 mi68 min 42°F 1018.3 hPa (+0.0)
MLWW3 - Milwaukee, WI 25 mi48 min NNE 1.9 G 2.9 42°F
WHRI2 - Waukegan Harbor, IL 27 mi88 min N 7 G 8 44°F
PWAW3 - Port Washington, WI 47 mi88 min NW 5.1 G 6 47°F 1019.3 hPa

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Racine, Batten International Airport, WI8 mi75 minNNE 310.00 miOvercast44°F32°F63%1019.2 hPa
Kenosha, Kenosha Regional Airport, WI18 mi75 minN 010.00 miOvercast47°F33°F59%1018.5 hPa
Milwaukee, General Mitchell International Airport, WI20 mi76 minNE 310.00 miOvercast44°F30°F60%1018.8 hPa
Chicago/Waukegan Regional Airport, IL24 mi73 minN 310.00 miOvercast46°F33°F61%1018.1 hPa

Wind History from RAC (wind in knots)
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Last 24hrNE8NE8NE8NE10NE11N11N12NE12N13N15N13
G20
N10N12N11
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6NE4NW5NW3CalmNE3NE3NE3N4
1 day agoNE4NE6NE8NE746NE9N8NE8N9N9N13
G18
NE7N5NE7N5NE8N5N3N5N4N5N5N8
2 days agoNE3CalmCalmCalmSE3SE3E5SE4E6SE4E5SE6CalmCalmCalmW3CalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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wmap_A
GOES Local Image of GreatLakes    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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Milwaukee/Sullivan, WI (8,2,3,4)
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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.