Thursday, January18, 2018 L-36.com


Marine Weather and Tides
Green Bay, 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 7:20AMSunset 4:44PM Thursday January 18, 2018 7:22 AM CST (13:22 UTC) Moonrise 9:17AMMoonset 7:25PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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
    EDIT      (on/off)   Help
LMZ522 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- 341 Am Cst Thu Jan 18 2018
Today..SW wind 10 to 20 kts. Partly cloudy.
Tonight..SW wind 10 to 15 kts. Partly cloudy.
Friday..SW wind 10 to 15 kts. Partly Sunny.
Friday night..SW wind 15 to 25 kts decreasing to 10 to 15 kts in the late evening and overnight. Mostly cloudy. A small craft advisory may be needed.
LMZ522 Expires:201801181715;;626081 FZUS53 KGRB 180941 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 341 AM CST Thu Jan 18 2018 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-181715-

7 Day Forecast for Marine Location Near Green Bay, WI
   Hourly   EDIT   Help
location: 44.52, -87.98     debug


Area Discussion for - Green Bay, WI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 kgrb 181139
afdgrb
area forecast discussion
national weather service green bay wi
539 am cst Thu jan 18 2018
updated aviation portion for 12z TAF issuance

Short term Today... Tonight... And Friday
issued at 311 am cst Thu jan 18 2018
a clipper system will pass by to the north today. It is fairly
dynamic and could produce some snow in northern wisconsin if
moisture were available. The models all show very dry air below
10000 feet in the north and 15000 feet across central wisconsin.

Since it is unlikely that any snow can fall through dry air like
that without sublimating, we decided to just keep a few snow
flurries near the michigan border. Highs today will be 5 to 10
degrees above normal even with quite a bit of middle and high
clouds for the first part of the day. Lows tonight will be held up
by mild boundary layer temperatures. Highs Friday should be around
ten degrees above normal in most places. A good day for winter sports.

Long term Friday night through Wednesday
issued at 311 am cst Thu jan 18 2018
focus of this forecast continues to revolve around the passage of a
cyclone late this weekend into early next week. Both the GFS and
canadian continue to trend north with the track of the system, while
the ECMWF remains slower, but with a similar track to the gfs
ensemble mean. A blend of the ECMWF and GFS will keep good
continuity with this system.

Friday night through Saturday night... Wisconsin will be located
between a cold front positioned over south-central canada and high
pressure located over the southeast CONUS on Friday night. Other
than scattered to broken mid and high clouds at times, should be
looking at a quiet and mild night. Mid and high clouds will
increase on Saturday, though a dry wedge below 700mb should keep the
area dry. Temps on Saturday should rise into the upper 30s. Low
level moisture will lift northward into the southern great lakes on
Saturday night as low pressure emerges into the west-central plains.

Think this moisture will remain south of the region. Meanwhile, mid-
level fgen may be enough for a few flurries over north-central wi
and will keep a small chance of snow in the forecast.

Rest of the forecast... Low pressure will then be swinging across the
central plains on Sunday and into the northern mississippi valley on
Sunday night. Light precipitation is expected to develop on Sunday
as low level moisture increases. Progged soundings indicate that
moisture will be deep enough for light snow over northern wi, while
dry layers in the mid-levels could spell drizzle or freezing drizzle
over central and east-central wi. A band of heavier precip is then
expected to accompany the surface low late Sunday night into Monday.

Awfully difficult to project precip type this far out given the
uncertainty around the track of the surface low. However it does
appear there is a chance of accumulating snow and a wintry mix along
and to the north of the surface low track during the time of heavier
precip from roughly the northern fox valley into central and north-
central wi. Some accumulating snow is also possible on the backside
of the system on Monday night into early Tuesday over much of the
area. At this stage, its probably more important to understand that
travel is likely to be significantly impacted at times from Sunday
through early Tuesday rather than get bogged down into the details.

Behind the system, more quiet and seasonable weather is anticipated
for the middle of next week.

Aviation For 12z TAF issuance
issued at 539 am cst Thu jan 18 2018
an upper level disturbance will move across lake
superior and could produce a few hours of MVFR ceilings north of
rhinelander today. OtherwiseVFR conditions are expected through
Friday. Marginal low level wind shear this morning with southwest
winds around 10 knots at the surface and west winds around 35
knots at 2000 feet.

Grb watches warnings advisories
None.

Short term... ..Rdm
long term... ... Mpc
aviation... ... .Rdm


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KWNW3 - 9087069- Kewaunee, WI 26 mi52 min WSW 6 G 9.9 21°F 1012.6 hPa
MN4 - 9087088 - Menominee, MI 45 mi52 min SSW 5.1 G 8.9 18°F 1011.8 hPa11°F

Wind History for Kewaunee MET, WI
(wind in knots)    EDIT      (on/off)   Help
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
Last
24hr
W12
G19
W11
G14
W10
G17
W11
G18
W18
W12
G23
SW10
G17
SW9
G15
SW11
G17
SW10
G17
SW13
G21
SW11
G16
SW10
G18
SW13
G19
W10
G18
W14
G21
W13
G19
W10
G15
SW8
G12
W6
G11
SW8
G13
SW6
G9
W7
G10
SW4
G7
1 day
ago
NW10
G13
NW9
G14
NW9
G14
NW12
G15
NW10
G13
NW9
G13
NW6
G10
N6
G10
N7
G10
NW4
W3
NW4
NW4
NW4
NW4
NW4
NW3
W5
NW5
W6
G10
W8
G14
W10
W10
G13
W10
G14
2 days
ago
SE21
G29
SE19
G24
SE17
G24
SE20
G25
SE16
G22
SE14
G18
SE11
G17
E8
G11
E6
G10
E7
G10
E6
G9
NE4
G8
NE7
G13
NE9
G13
NE7
G10
NW7
G10
NW6
G9
N8
NW6
NW7
G10
NW7
G10
NW8
G11
NW7
G13
NW9
G15

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Green Bay, Austin Straubel International Airport, WI8 mi29 minSSW 910.00 miFair20°F12°F71%1014 hPa

Wind History from GRB (wind in knots)
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
Last 24hrSW9SW12SW11SW13
G18
SW14
G22
SW14
G25
SW12
G21
SW13
G20
SW10
G23
SW12SW12
G18
SW13
G18
SW13
G20
SW13
G22
SW14SW11SW6SW7SW8SW5SW8SW8SW8SW9
1 day agoCalmCalmN4NW6NW5NW7NW6NW4W5SW3SW3W4CalmSW5W6W10W9SW6SW8SW7SW7SW9SW9SW9
2 days agoE4E3--NE5NE6E10E9NE9NE11NE11NE11N11N12N7N10N8N9N7N10N6N10N9N7N6

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of GreatLakes    EDIT
Geos

Wind Forecast for Green Bay, WI (8,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Green Bay, WI
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.