Thursday, July16, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Oshkosh, WI

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:25AMSunset 8:35PM Thursday July 16, 2020 9:15 AM CDT (14:15 UTC) Moonrise 2:01AMMoonset 5:04PM Illumination 15% Phase: Waning Crescent; Moon at 26 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
LMZ543 Expires:202007161630;;923783 Fzus53 Kgrb 160802 Nshgrb Nearshore Marine Forecast National Weather Service Green Bay Wi 302 Am Cdt Thu Jul 16 2020 For Waters Within Five Nautical Miles Of Shore On Lake Michigan Lmz541>543-161630- Rock Island Passage To Sturgeon Bay Wi- Sturgeon Bay To Two Rivers Wi-two Rivers To Sheboygan Wi- 302 Am Cdt Thu Jul 16 2020
Today..N wind 5 to 10 kts veering ne mid-day, then veering S in the afternoon. Waves 2 ft or less. Mostly Sunny.
Tonight..SW wind 5 to 10 kts. Waves 2 ft or less. Clear.
Friday..S wind 10 to 15 kts. Waves 2 ft or less. Mostly Sunny.
Friday night..S wind 5 to 10 kts. Waves 1 to 3 ft. Partly cloudy.
LMZ543


7 Day Forecast for Marine Location Near Oshkosh, WI
   Hourly   EDIT   Help
location: 44.02, -88.56     debug


Area Discussion for - Green Bay, WI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS63 KGRB 161134 AFDGRB

Area Forecast Discussion National Weather Service Green Bay WI 634 AM CDT Thu Jul 16 2020

Updated aviation portion for 12Z TAF issuance

SHORT TERM. Today . Tonight . and Friday Issued at 330 AM CDT Thu Jul 16 2020

Areas of dense fog in central and northcentral Wisconsin, and low clouds across eastern Wisconsin should all dissipate by a few hours after sunrise. Skies should become mostly sunny today with temperatures near normal and comfortable humidity.

A low level jet across northeast Minnesota and western Lake Superior could produce some elevated thunderstorms that could drift into northwest Wisconsin this evening. There is a small chance that a shower or thunderstorm makes it into Vilas county, but otherwise it should be dry overnight. Low level warm advection and perhaps some middle clouds in the north will keep temperatures about five degrees above average tonight.

Friday will be mostly sunny with rising temperatures and humidity values as very warm air streams northeast from the Southern Plains. Heat indices will be in the middle to upper 80s away from the lake.

LONG TERM. Friday Night Through Wednesday Issued at 330 AM CDT Thu Jul 16 2020

Models remain in good agreement with the subtropical upper high stretched across the southern CONUS well into next week and an active westerlies running across the northern tier of states. A broad upper trough is expected to extend from the northern Rockies to the Great Lakes with individual shortwave troughs moving within the upper trough. Trying to time these individual systems for precipitation chances continues to be the main forecast challenge. Very warm/humid conditions are expected this weekend with temperatures/dew points falling a bit next week closer to normal.

Models concur in the development of a convective complex to move from the Upper MS Valley into the western Great Lakes region late Friday night. A 40 knot southwest low-level jet aimed at MN/WI, coupled with increased mid-level forcing from a fast-moving shortwave trough and diffluent flow at upper jet level will aid i keeping the complex intact through the night. MUCAPES approach 1500 J/KG over central WI, while the 0-6km bulk shear over north- central WI increases to 30-40 knots. Potential will exist for storms to become strong to severe with damaging wind gusts the main threat. Min temperatures to only drop into the middle 60s north, upper 60s to around 70 degrees south. This complex should track east and weaken Saturday morning as the low-level jet diminishes. Highest pops placed over northern WI, closer to the track of the shortwave trough. Cannot rule out precipitation from reaching central/east-central WI as convective outflow boundaries may set off additional showers/thunderstorms. The big question is whether all this precipitation will have diminished/moved out by Saturday afternoon. If we can see any afternoon sun at all, temperatures could easily reach the upper 80s to lower 90s as 8H temperatures climb into the lower 20s celsius. Dew points in the lower to middle 70s would make it feel oppressive and heat indices in the middle 90s to around 100 degrees would approach heat advisory criteria. All of this will be determined on how fast the thunderstorm complex dissipates.

The next convective complex is forecast to develop Saturday night as a cold front and weak shortwave trough interact with an unstable atmosphere over WI. MUCAPES of 2500-3500 J/KG Saturday evening, mid-level lapse rates > 7 C/km and LI's of at least -6 to be in place. Shear values increase into the 40-60 knot range, but until late Saturday night, thus the strongest instability and strongest shear are not in sync which may impact the intensity of the thunderstorms. Nevertheless, SPC has already placed all of northeast WI in a Slight Risk of severe storms for Saturday night into Sunday morning. Another factor could be very heavy rainfall with PW values surpassing 2.0 inches. Depending on how much rain falls Friday night, a flooding concern may become a problem. Min temperatures Saturday night to range from the lower to middle 60s north-central WI, to around 70 degrees east-central WI. Eastern WI may see a lingering shower/storm early Sunday morning, otherwise weak high pressure over the Upper Midwest should keep the rest of the day dry. A wind shift to the west-northwest behind the cold front will knock temperatures/dew points down a bit, especially over northern WI. Look for max temperatures to range from the lower 80s north-central, to the upper 80s across eastern WI.

Quiet conditions will continue Sunday night as all the shower/ thunderstorm activity to be located well to our south where the cold front to have stalled over central WI. Some models show another mid-level shortwave trough to swing into the western Great Lakes region by Monday afternoon, but confidence in timing will make for a low-end chance pops at best. Max temperatures for Monday to be closer to normal as readings to be in the upper 70s north-central, lower 80s elsewhere.

The forecast toward the mid-week period has low confidence as the models vary with the timing of successive shortwave troughs. There will be plenty of dry hours, but hard to predict this far out in time. Have followed the consensus solution which does keep low end pops in the forecast for both Tuesday and Wednesday. Temperatures are forecast to remain near normal through mid-week.

AVIATION. for 12Z TAF Issuance Issued at 634 AM CDT Thu Jul 16 2020

Areas of low clouds and fog will dissipate by 13z this morning, with VFR conditions expected today through Friday. There could be some scattered ground fog late tonight, but confidence is low.

GRB WATCHES/WARNINGS/ADVISORIES. Dense Fog Advisory until 8 AM CDT this morning for WIZ005-010- 018-030-035.

SHORT TERM . RDM LONG TERM . Kallas 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
SGNW3 - Sheboygan, WI 50 mi75 min N 11 G 11 64°F
PWAW3 - Port Washington, WI 57 mi35 min N 2.9 G 8.9 67°F 1017.9 hPa

Wind History for Kewaunee MET, WI
(wind in knots)    EDIT      (on/off)   Help
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
8
AM
9
AM
Last
24hr
--
NE2
G6
NE3
G7
NE2
G7
N4
G8
N5
G10
N4
G11
NE2
G7
NE3
G8
NW1
N1
S3
N3
G7
E11
G14
NW2
N2
G7
N1
G5
NW1
G5
NW1
G4
NW1
--
N1
G5
NE2
G6
NE1
G7
1 day
ago
S9
G12
S13
S14
S18
S18
S16
S17
S16
S17
S16
S12
S13
S16
G20
S12
G17
S13
G16
S14
G17
S10
S8
S7
W4
G8
--
N2
G6
NE1
G4
NE1
G6
2 days
ago
E2
E5
SE5
G8
SE4
G7
SE5
G9
SE6
G10
SE6
G9
SE5
G8
SE5
G8
S7
S9
S6
SW4
S6
S3
G6
S4
G7
SW4
G7
S3
G6
SW1
S11
S15
S15
S16
S13
G17

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Wittman Regional Airport, WI1 mi22 minVar 310.00 miOvercast67°F61°F81%1016.9 hPa
Appleton-Outagamie, WI17 mi30 minN 010.00 miOvercast64°F62°F94%1018.3 hPa
Fond Du Lac County Airport, WI18 mi22 minN 010.00 miOvercast69°F64°F84%1017.7 hPa

Link to 5 minute data for KOSH

Wind History from OSH (wind in knots)
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
8
AM
9
AM
Last 24hrNE7E6NE8NE7N8N11NE10NE8E3N8N8E5SE124NE3N9N6NW5NW4N5N4N5N43
1 day agoS8S10S16
G20
S13
G20
S16
G24
S15
G22
S11
G23
S11S10S8S5S8S17SW7S5S7SW8S6CalmCalmCalmN4N9N8
2 days ago36E5E6E8E7E6E5E7SE10SE8SE7S6S4S6S8S6S6S8S8S8S7S9S11

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Green Bay, WI (10,2,3,4)
      (on/off)   Help

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

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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 numerous 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.