Friday, May26, 2017 L-36.com


Marine Weather and Tides
Sister Bay, WI

Version 3.4
What's New / NOTES
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 8:26PM Friday May 26, 2017 9:17 PM CDT (02:17 UTC) Moonrise 6:12AMMoonset 9:25PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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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LMZ541 Rock Island Passage To Sturgeon Bay Wi- Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 905 Pm Cdt Fri May 26 2017
.dense fog advisory in effect until 1 pm cdt Saturday...
Rest of tonight..S wind 5 to 10 kts. Waves 2 ft or less. Areas of dense fog.
Saturday..S wind 5 to 10 kts. Waves 2 ft or less. Areas of dense fog possible. A slight chance of showers and Thunderstorms in the afternoon.
Saturday night..S wind 5 to 10 kts backing se after midnight. Waves 2 ft or less. Areas of fog. A chance of showers.
Sunday..E wind 5 to 10 kts backing N mid-day, then backing W early in the afternoon. Waves 2 ft or less. Areas of fog in the morning. Showers likely in the morning, then a chance of showers in the afternoon.
LMZ541 Expires:201705271015;;262362 FZUS53 KGRB 270205 NSHGRB NEARSHORE MARINE FORECAST NATIONAL WEATHER SERVICE GREEN BAY WI 905 PM CDT FRI MAY 26 2017 FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN LMZ541>543-271015-

7 Day Forecast for Marine Location Near Sister Bay, WI
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location: 45.19, -87.12     debug


Area Discussion for - Green Bay, WI
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Fxus63 kgrb 262337
afdgrb
area forecast discussion
national weather service green bay wi
637 pm cdt Fri may 26 2017
updated aviation portion for 00z TAF issuance

Synopsis
Issued at 251 pm cdt Fri may 26 2017
scattered showers and gradually turning cooler during the holiday
weekend.

Northwest upper flow will develop across the region as a ridge
sets up over western north america and an upper trough settles in
over ontario. The pattern does not appear as though it will be
exceptionally long-lived, as deamplification is likely to begin by
late in the period.

Temperatures will start the period near seasonal normals, then
drop back to a little below normal in the developing northwest
flow. There will be several opportunities for precipitation, but
most precipitation events look to be composed of scattered to
numerous showers so amounts are likely to end up near normal for
the 7 day period.

Short term Tonight and Saturday
issued at 251 pm cdt Fri may 26 2017
precipitation chances remain somewhat uncertain due to weak
forcing. Trended pops upward this evening and then down after
midnight, following the most recent hrrr runs. Remnants of a weak
boundary will linger across the area Saturday, again leading to
rather nebulous forcing. Stuck with mainly chance pops with the
best chance in the afternoon.

Dense fog over lake michigan has primarily remained offshore, but
southeast low-level flow could bring it inland. The main concern
is highways near the lake which are likely to have a high traffic
volume at the start of the holiday weekend. Plan to handle the
situation with spss unless fog makes a more aggressive surge
inland. Winds may turn offshore later tonight and push the fog
farther out into the lake, but again models differed in the
details of that in the weak low-level pattern.

Long term Saturday night through Friday
issued at 251 pm cdt Fri may 26 2017
northwest flow aloft will continue through much of next week as
500mb ridge remains entrenched across western north america with a
downstream trough across eastern north america. Upper level
disturbances and associated weak cold fronts will bring periodic
chances of showers and a few thunderstorms from time to time
through much of the period.

For Saturday night, weak frontal boundary across the area,
combined with daytime heating will allow for scattered shower to
linger into the evening hours. A thunderstorm could not be ruled
out. After midnight, two systems will approach the area. The first
system will pass to the south of the area while the second system
will approach from the northwest. These two systems will bring
increasing chances of showers overnight into Sunday morning. The
next weak cold front will move across the area Sunday afternoon.

This feature will bring continued chances of showers with a few
thunderstorms expected. Most of the shower activity will end
during the evening hours. With northwest flow aloft, could not
rule out an isolated shower after midnight.

Next shortwave energy and upper trough swing across the area
on memorial day. With daytime heating, instability showers will
be on the increase during the late morning and afternoon. A few
thunderstorms are possible. Due to expected cloud cover and rain,
lowered high temperatures on memorial day. Also, gusty westerly
winds are expected with gusts around 30 mph possible.

More instability showers are expected Tuesday, and again Wednesday
and Thursday. Most of the time will be dry, however the best
chances of rain appear to be during the afternoon hours.

Temperatures during the period will be at or slightly below
average.

Aviation For 00z TAF issuance
issued at 629 pm cdt Fri may 26 2017
scattered showers should edge out of northern wi later tonight,
and the scattered line of thunderstorms over the northwest part
of the state should dissipate as daytime instability wanes.

Partial clearing, light surface winds, boundary layer winds of
15 knots or less and low-level moisture will likely lead to areas
of fog and low clouds late tonight, with localized lifr vlifr
flight conditions possible. Dense fog is also possible along the
lakeshore, but whether or not this will reach the mtw TAF site is
uncertain. The fog should mix out early Saturday morning. Daytime
heating and the presence of a weak boundary in eastern wi may
result in scattered showers and isolated thunderstorms late in the
afternoon. Will mention vcsh at grb atw, but confidence is not
high enough to mention thunderstorms at this time.

Marine
Issued at 251 pm cdt Fri may 26 2017
dense fog will continue tonight into Saturday on lake michigan.

Patchy dense fog is also possible on the bay of green bay. The
fog may linger into Saturday night on lake michigan. There is
a slight chance of thunderstorms during the afternoon and
early evening hours Saturday, Sunday and memorial day that may
pose a hazard to mariners.

Gusty westerly winds are expected on memorial day with gusts
around 25 knots possible making for hazardous conditions for
small craft.

Grb watches warnings advisories
None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NPDW3 - Northport Pier at Death's Door WI 10 mi37 min SSW 1.9 G 5.1 56°F 1010.5 hPa
CBRW3 - Chambers Island, WI 13 mi37 min SE 1.9 G 5.1 59°F 1009.8 hPa
MN4 - 9087088 - Menominee, MI 26 mi47 min SSE 8 G 8.9 1009.5 hPa
FPTM4 - Fairport, MI 38 mi37 min Calm G 1 52°F
45002 - N MICHIGAN- Halfway between North Manitou and Washington Islands. 39 mi87 min SW 3.9 G 3.9 45°F 42°F1012 hPa (+0.3)
AGMW3 - Algoma City Marina WI 44 mi121 min SW 2.9 G 6

Wind History for Menominee, MI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Menominee, Menominee-Marinette Twin County Airport, MI27 mi21 minS 510.00 miOvercast61°F51°F70%1012.4 hPa

Wind History from MNM (wind in knots)
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Last 24hrCalmNW3--CalmCalmCalmCalmCalmCalmCalmCalmSW4E3SE7SE7S8SE7SE7S8S8S8SE6S5S5
1 day agoN5N8N7N6NE6N6N7N6N6N65NE9
G15
E9E13E12E10E10E11E6E5CalmNE4E8Calm
2 days agoNE10NE10NE8NE9NE8N6NE6N6NE6NE6--NE7NE8NE9E11
G19
NE16NE11NE11E11NE13E12
G17
NE9NE5NE5

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 (22,6,7,8)
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Ground Weather Radar Station Green Bay, 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.