Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Neenah, 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 5:11AMSunset 8:43PM Wednesday June 28, 2017 5:53 PM CDT (22:53 UTC) Moonrise 10:31AMMoonset 12:00AM Illumination 24% Phase: Waxing Crescent; Moon at 5 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 Rock Island Passage To Sturgeon Bay Wi- Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 413 Pm Cdt Wed Jun 28 2017
.small craft advisory in effect through Thursday morning...
Tonight..S wind to 30 kts becoming sw 10 to 20 kts after midnight. Waves 6 to 10 ft subsiding to 5 to 8 ft after midnight. Showers likely and scattered Thunderstorms in the evening, then scattered showers and isolated Thunderstorms after midnight.
Thursday..W wind 10 to 20 kts. Waves 3 to 5 ft subsiding to 1 to 3 ft in the afternoon. A slight chance of showers in the morning north of sturgeon bay.
Thursday night..NW wind 10 to 15 kts. Waves 1 to 3 ft. Mostly cloudy.
Friday..NW wind 5 to 10 kts veering E mid-day, then veering se early in the afternoon. Waves 2 ft or less. A chance of showers.
LMZ543 Expires:201706290430;;969992 FZUS53 KGRB 282113 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 413 PM CDT Wed Jun 28 2017 For waters within five nautical miles of shore on Lake Michigan LMZ541>543-290430-

7 Day Forecast for Marine Location Near Neenah, WI
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location: 44.18, -88.48     debug


Area Discussion for - Green Bay, WI
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Fxus63 kgrb 281943
afdgrb
area forecast discussion
national weather service green bay wi
243 pm cdt Wed jun 28 2017
forecast discussion for routine afternoon forecast issuance

Synopsis
Issued at 240 pm cdt Wed jun 28 2017
periods of showers and thunderstorms will continue through this
evening, with severe storms still possible.

A seasonably strong band of relatively low-amplitude westerlies
is across the northern conus. The large scale pattern will be
slowly progressive and gradually reamplify as an upper trough
passes through the great lakes region during the upcoming weekend.

Late in the period and beyond, the pattern is likely to
transition to a typical mid-summer regime with a the main
westerlies across southern canada, and a large broad anticyclone
centered over the intermountain west.

The large scale pattern should result in temperatures fairly
close to seasonal normals for most of the period, though there
will be day to day variations due to precipitation and
differences in cloud cover. Readings should warm to above normal
for the middle to latter part of next week. The pattern will still
be favorable for precipitation through the weekend, though it
does look drier after that. So although the precipitation will be
front loaded in the period, amounts will probably still end up
above normal.

Short term Tonight and Thursday
issued at 240 pm cdt Wed jun 28 2017
it's still tough to get a firm grasp on the severe potential late
today and this evening. Rain persists across much of the area,
though it is diminishing from the west. Mid-level dry slot is
pushing into western wisconsin, but convection continues to fire
at the nose of the dry slot. Will stick with convective scenario
set forth in the previous afd and mid-day hwo. Storms are likely
to develop over west-central and northwest wisconsin during the
middle to late this afternoon, and push across the forecast area
this evening. A separate band of storms developing over southeast
minnesota and northeast iowa may graze the southern part of the
forecast area earlier. The late-day evening storms will pose a
risk of damaging winds and large hail. The risk of tornadoes will
also be present, mainly with any storms near the warm front
lifting into the area.

Tapered pops down later tonight, though isolated showers could
linger well past midnight. Gusty west winds are expected Thursday.

Stuck with dry forecast for most of the area, but went with a
chance of showers across the north.

Long term Thursday night through Wednesday
issued at 240 pm cdt Wed jun 28 2017
the weather pattern will remain busy at least through the weekend,
though there are indications that quieter conditions will finally
occur next week. Will use a multi-model blend for much of this
forecast.

Thursday night through Saturday... Conditions will start out quiet on
Thursday night as weak high pressure will initially be present. But
will then see clouds increase late when low pressure moves into
iowa. With lift increasing ahead of the low, showers could push
into central and east-central wi by sunrise. The models are
trending weaker and further south with the system for Friday.

Scattered light showers will remain possible, but heavier rainfall
looks to occur south of the area. Will keep a slight chance of
thunderstorms across the southern 2 rows of counties, though not
confident that thunderstorms will reach this far north. Skies should
partially clear behind the system for late Friday night into
Saturday morning. However, upper troughing will remain overhead,
which should lead to scattered showers and isolated storms popping
up with heating on Saturday. No significant changes to temps.

Rest of the forecast... Sunday is looking like the better day of the
weekend. A shortwave trough will be dropping southeast across the
lake superior region and most likely will not have much impact on
our sensible weather. However, it could provide a few showers to
the region on Sunday night as it pushes a cold front south over the
state. As it stands now, early to middle of next week looks
relatively quiet with high pressure in control.

Aviation For 18z TAF issuance
issued at 1240 pm cdt Wed jun 28 2017
timing of shra tsra and ceilings are the main aviation forecast
concerns. The initial band of shra should exit the area. There
will then likely be a second round of tsra during the late
aftn evening. Timing strength of those storms is very much in
question, so made a guess at most likely timing in the tafs with
the expectation that will probably need adjustment later. The
guidance is pretty aggressive with low ceilings overnight. There
are plenty of low clouds out there now, but wonder how many will
remain once the initial band of rain shifts off to the ne. Went
with a little more optimistic ceiling forecast in the tafs, though
confidence in that aspect of the forecast is also low.

Grb watches warnings advisories
Beach hazards statement through Thursday morning for wiz022-040-
050.

Synopsis... ... .Skowronski
short term... ..Skowronski
long term... ... Mpc
aviation... ... .Skowronski


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SGNW3 - Sheboygan, WI 51 mi54 min S 19 G 21 56°F 1008.4 hPa (-1.4)55°F
KWNW3 - 9087069- Kewaunee, WI 56 mi54 min S 13 G 15 55°F 1008.4 hPa (-1.4)

Wind History for Kewaunee MET, WI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Appleton-Outagamie, WI6 mi69 minSSE 137.00 miLight Rain64°F64°F100%1006.1 hPa
Wittman Regional Airport, WI13 mi61 minS 104.00 miLight Rain Fog/Mist66°F64°F93%1005.7 hPa

Wind History from ATW (wind in knots)
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Last 24hrSW10SW6SW655S5SW8S6S5S7S8S11S9S11------SE13
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1 day agoN7NE4Calm4SW4SW7W6W7W7W8W8W8W9W8W8W7W7W10
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--W12--W6SW8SW8
2 days agoW8W9W8W9W6W5W5W7W6W7W7W6W9W10
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NW15NW9
G15

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 (18,4,5,8)
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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.