Thursday, September21, 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 6:39AMSunset 6:53PM Thursday September 21, 2017 4:16 PM CDT (21:16 UTC) Moonrise 8:01AMMoonset 7:57PM Illumination 1% 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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LMZ543 Rock Island Passage To Sturgeon Bay Wi- Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 337 Pm Cdt Thu Sep 21 2017
.dense fog advisory in effect until 10 am cdt Friday...
Tonight..E wind 5 to 10 kts veering S in the late evening and overnight. Waves 2 ft or less. Areas of dense fog. A slight chance of showers and Thunderstorms.
Friday..S wind 10 to 20 kts. Waves 1 to 3 ft building to 2 to 4 ft in the early afternoon. Areas of dense fog in the morning, then patchy dense fog in the afternoon.
Friday night..SW wind 10 to 20 kts. Waves 2 to 4 ft. Clear.
Saturday..S wind 10 to 20 kts. Waves 2 to 4 ft. Sunny.
LMZ543 Expires:201709220430;;729229 FZUS53 KGRB 212037 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 337 PM CDT Thu Sep 21 2017 For waters within five nautical miles of shore on Lake Michigan LMZ541>543-220430-

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 211959
afdgrb
area forecast discussion
national weather service green bay wi
259 pm cdt Thu sep 21 2017
forecast discussion for routine afternoon forecast issuance

Short term Tonight and Friday
issued at 258 pm cdt Thu sep 21 2017
a warm front was lifting into southern mn and southwest wi
this afternoon. A band of low clouds was persisting north
of this boundary, and moving northward through grb cwa.

Temperatures were in the low to mid 70s within the cloud band, but
in the upper 70s to lower 80s where there was sunshine. Despite
sbcape of 1000-1500 j kg across the region, cinh of 75-100 j kg
was capping off any convection.

The warm front is expected to lift north across the region tonight
and Friday morning. The front, combined with a developing 30-35 kt
low-level jet, should trigger isolated elevated thunderstorms
north of the boundary, as h8 li's of -3 to -5 c advect into the
region. Storms may be a bit more numerous over north central wi,
as some weak short-wave energy and the rrq of 50-60 kt jet brush
past later tonight. SPC still has a small part of north central wi
in the marginal risk for severe storms tonight, and this seems
reasonable, as deep-layer shear is strongest there (around 30
kts). Have added patchy fog across most of the region overnight,
with areas of fog in far northeast wi and on lake michigan, where
marine fog is already occurring.

The warm front will lift into the upper peninsula of michigan
on Friday, ending the threat of thunderstorms. The resulting
clearing and gusty southwest winds will lead to strong heating,
with mixing through 900-875 mb supporting high temperatures
in the middle 80s to lower 90s, much above normal.

Long term Friday night through Thursday
issued at 258 pm cdt Thu sep 21 2017
an amplified pattern will be in place for the CONUS until early next
week, thanks to a deep trough over the western u.S., and a ridge
over the east. The pattern does translate east, which will signal a
pattern change by the middle of next week across the region.

Although there are some timing differences in regards to when this
pattern change occurs, models are generally in good agreement this
far out, so will continue to use a multi model blend for this
forecast.

Friday night through Sunday... With a cold front nearly stationary
over minnesota, and a warm front extending east over lake superior,
the entire region is expected to be located in the warm sector
during this period. With mostly clear conditions and a breezy south
wind, temperatures will likely range from 15 to 20 degrees above
normal. Saturday should be warmer than Sunday, when a few 90s are
possible in the warm spots. Heat indices in the low to mid 90s on
Saturday will fall back to the upper 80s on Sunday.

Rest of the forecast... Sunday night continues to look quiet and
warm. Then precip chances will gradually increase from west to east
on Monday and Tuesday when a cold front drifts closer to the region.

Storm chances look the highest on Tuesday along this front, but its
too early to assess a severe threat. More seasonable temps return
behind the front for midweek.

Aviation For 18z TAF issuance
issued at 1242 pm cdt Thu sep 21 2017
large patches of ifr MVFR ceilings remained across the region at
midday, thoughVFR conditions were found over parts of northern
and east central wi. Latest satellite trends suggest that the
main area of stratus will continue to lift north this afternoon
and evening, resulting in improving flight conditions for all but
the rhi TAF site. The cold front that moved through the region
yesterday is expected to return north as a warm front later this
afternoon and tonight, and may produce isolated scattered
thunderstorms. Confidence is only high enough to mention vcts
in the tafs at this time.

Have added llws to the rhi auw CWA taf sites from late evening
through early Friday morning, as low-level winds increase to
around 35 knots from the southwest.

Grb watches warnings advisories
None.

Short term... ..Kieckbusch
long term... ... Mpc
aviation... ... .Kieckbusch


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SGNW3 - Sheboygan, WI 51 mi76 min E 5.1 G 5.1 68°F 1015.8 hPa (-0.9)67°F
KWNW3 - 9087069- Kewaunee, WI 56 mi46 min SSE 1.9 G 4.1 67°F 1015.6 hPa

Wind History for Kewaunee MET, WI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Appleton-Outagamie, WI6 mi31 minSSE 710.00 miMostly Cloudy82°F64°F55%1015.2 hPa
Wittman Regional Airport, WI13 mi23 minS 810.00 miFair84°F66°F55%1013.9 hPa

Wind History from ATW (wind in knots)
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Last 24hrSE11
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SE7S6W66SE12S8SW11S5W6NW5NW4NW7N5NE6NE6E5NE7E4NE5SE6S7S8S7
1 day agoSE10SE10--SE8E8E7E5E5E5SE6SE4SE5SE5SE8SE9SE9SE11
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2 days agoSE8E8E7E5E7E8NE5E4E4NE6NE5N6NE6NE5NE6NE5E5SE5SE5E7E7E4SE10SE12

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 (17,4,5,8)
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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.