Tuesday, October17, 2017 L-36.com


Marine Weather and Tides
Two Rivers, WI

Version 3.4
What's New / NOTES
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.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:07AMSunset 6:03PM Tuesday October 17, 2017 6:13 AM CDT (11:13 UTC) Moonrise 4:38AMMoonset 5:26PM Illumination 9% Phase: Waning Crescent; Moon at 27 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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LMZ543 Green Bay South Of Line From Cedar River To Rock Island Passage And North Of A Line From Oconto Wi To Little Sturgeon Bay Wi- Green Bay South Of Line From Oconto Wi To Little Sturgeon Bay Wi- Rock Island Passage To Sturgeon Bay Wi- Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 336 Am Cdt Tue Oct 17 2017
.small craft advisory in effect until 9 am cdt this morning...
Today..SW wind 15 to 25 kts early, diminishing to 10 to 20 kts by late morning. Waves 3 to 5 ft early, subsiding to 2 to 4 ft by late morning. Sunny.
Tonight..SW wind 10 to 20 kts. Waves 2 to 4 ft. Clear.
Wednesday..SW wind increasing to 30 kts. A few gale force gusts to 35 kts possible during the afternoon. Waves building to 4 to 6 ft on the bay, and to 7 to 11 ft on the lake. Sunny. A small craft advisory will likely be needed.
Wednesday night..SW wind 15 to 25 kts with a few gale force gusts to around 35 kts in the evening, veering W and diminishing to 10 to 20 kts after midnight. Waves subsiding to 2 to 4 ft on the bay, and to 3 to 5 ft on the lake. Mostly clear.
LMZ543 Expires:201710171630;;985986 FZUS53 KGRB 170836 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 336 AM CDT Tue Oct 17 2017 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-541>543-171630-

7 Day Forecast for Marine Location Near Two Rivers, WI
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location: 44.15, -87.56     debug


Area Discussion for - Green Bay, WI
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Fxus63 kgrb 170823
afdgrb
area forecast discussion
national weather service green bay wi
323 am cdt Tue oct 17 2017
forecast discussion for routine morning forecast issuance

Synopsis
Issued at 321 am cdt Tue oct 17 2017
mild, quiet mid-autumn weather to continue for the rest of the
week.

Relatively low amplitude large scale flow is in place across
north america, with the main westerlies pretty far north for this
time of year--primarily across southern canada. The pattern will
gain some amplitude during the week, with a longwave trough
forming near the west coast and downstream ridging developing mid-
continent. That pattern will likely be be short-lived, as the
development of a much stronger trough out near 160w will result in
a transition to ridging near the west coast, and troughing over
the great lakes region by the end of the period.

Temperatures 10 to 15 f degrees above normal are expected into the
upcoming weekend, then readings will drop back close to normal by
early next week. Normal precipitation for a week at this time of
year is down to a little over 1 2 inch. In addition, we've
entered the time of year where receiving significant precipitation
requires a direct influx of gulf moisture. Dry air and a lack of
dynamics will result in dry weather into the weekend. The best
chance for rain will be with a frontal system crossing the area
this weekend, but that system seems unlikely to bring significant
rains, so amounts are likely to end up below normal for the
period.

Short term Today... Tonight... And Wednesday
issued at 321 am cdt Tue oct 17 2017
quiet weather is expected as the main westerlies remain to the
north. Edged MAX temperatures a little above the broad-based
guidance to account for the very mild air mass flowing into the
region. Mins are a little trickier as any areas that decouple
could have temperatures drop a little more than depicted on the
guidance. Edged the typical cool spots down a little to account
for this, but that still left mins well above normal. Rather windy
conditions are expected by Wednesday afternoon as the gradient
tightens ahead of a cyclone tracking across southern canada.

Long term Wednesday night through Monday
issued at 321 am cdt Tue oct 17 2017
500mb ridge across the eastern united states will bring above normal
temperatures to the region into the latter half of the weekend. High
temperatures on Friday and Saturday could reach the 70s at some spots.

The normal high temperature for this time of year is in the middle
to upper 50s.

Some significant timing differences with the cold front and the
arrival of rain across the area this weekend. The GFS canadian
models were quicker and would bring rain to the area Saturday
afternoon and Saturday night with a lingering chance Sunday
morning. The ECMWF was about to 12 to 18 hours slower and would
bring rain to the area later Saturday night into Sunday. Took a
blend of the model guidance for now until timing differences get
resolved. Perusal of the convective parameters would indicate
there is a slight chance of a thunderstorm with the passage of the
cold front. Severe weather is not expected. Temperatures return
close to or slightly below normal early next week.

Aviation For 12z TAF issuance
issued at 321 am cdt Tue oct 17 2017
with just cirrus passing through, the main aviation concern will
be llws. The ongoing llws will ease this morning as the gradient
slackens. But another round will develop tonight into Wednesday as
low-level flow increases from the south ahead of the cyclone
tracking east across southern canada.

Grb watches warnings advisories
None.

Synopsis... ... .Skowronski
short term... ..Skowronski
long term... ... Eckberg
aviation... ... .Skowronski


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KWNW3 - 9087069- Kewaunee, WI 22 mi43 min WSW 9.9 G 17 55°F 1015 hPa
SGNW3 - Sheboygan, WI 29 mi73 min SW 15 G 19 56°F 1017 hPa (-2.1)39°F
45014 46 mi43 min SW 18 G 23 55°F 58°F1014.7 hPa

Wind History for Kewaunee MET, WI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Manitowoc, Manitowoc County Airport, WI6 mi17 minWSW 1210.00 miFair54°F39°F57%1018.8 hPa

Wind History from MTW (wind in knots)
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Last 24hrW4W5W6W4W9SW9SW9W9
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W9W10SW3--S5S5S5SW5S4S5SW9SW9SW14
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1 day agoNW13--NW13
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NW12NW10NW10W6W6W8W7W8W8W5W5W5W6W4W5W6
2 days agoNE5NE10--E11NE7NE10
G14
NE10NE8E10E12
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E13E12E7E3S7S7S13S16
G22
S7SW6SW11NW14NW10
G19

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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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

Wind Forecast for Green Bay, WI (7,2,3,4)
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Ground Weather Radar Station Green Bay, WI
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weather_mapweather_map weather_map

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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.