Monday, August10, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
North Bay, 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 5:51AMSunset 8:01PM Monday August 10, 2020 1:40 PM CDT (18:40 UTC) Moonrise 11:32PMMoonset 12:38PM Illumination 57% Phase: Waning Gibbous; Moon at 21 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
LMZ646 Wind Point Wi To Winthrop Harbor Il- 108 Pm Cdt Mon Aug 10 2020
.severe Thunderstorm watch 426 in effect until 7 pm cdt this evening...
Rest of today..Southwest wind 5 to 10 knots becoming west 10 to 15 knots late in the afternoon. Chance of showers and Thunderstorms early in the afternoon, then showers and Thunderstorms late in the afternoon. Waves 1 to 2 feet.
Tonight..West wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then becoming northwest 10 to 15 knots after midnight. Chance of showers and Thunderstorms through around midnight. Waves around 1 foot.
Tuesday..Northwest wind 10 to 15 knots becoming north 5 to 10 knots late in the morning, then veering northeast early in the afternoon veering southeast late in the afternoon. Sunny. Waves around 1 foot.
Tuesday night..South wind 5 to 10 knots veering west early in the morning. Mostly clear. Waves nearly calm.
LMZ646 Expires:202008102200;;239087 FZUS53 KMKX 101809 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 108 PM CDT Mon Aug 10 2020 For waters within five nautical miles of shore on Lake Michigan LMZ646-102200-


7 Day Forecast for Marine Location Near North Bay, WI
   Hourly   EDIT   Help
location: 42.73, -87.66     debug


Area Discussion for - Milwaukee/Sullivan, WI
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS63 KMKX 101709 AFDMKX

Area Forecast Discussion National Weather Service Milwaukee/Sullivan WI 1209 PM CDT Mon Aug 10 2020

MESOSCALE DISCUSSION. (Issued 1209 CDT Mon Aug 10 2020)

Updated for SPC Moderate Risk. Risk for high end wind gusts, particularly for Lafayette, Green, Rock, Walworth, Racine and Kenosha Counties.

Active afternoon of weather coming up for the region. Currently monitoring a nasty line of storms plowing through Central IA. Numerous measured reports of winds in excess of 60mph, with Des Moines recently posting a 75mph gust. The environment out ahead of this line only gets better instability-wise. As a result, SPC has included counties adjacent to the IL state line in a MDT risk and areas along/south of I-94 in a PDS Severe Thunderstorm watch due to the potential for high end wind gusts. As with anything, there are some questions as to how things will unfold north of the I-94 corridor.

Currently, the most vigorous line of storms is just east of Des Moines and moving eastward. Additional deep convection is percolating across northeastern IA. Instability is no issue with lifted indices pushing -10. Mixed layer CAPE is already well in excess of 2000 J/kg and poised to increase to around 3000 J/kg in the next few hours. In addition, it appears we will see an uptick in low level CAPE. As we continue to see convection mature and congeal on the northern portion of this line, this will be a helpful ingredient for organization. Finally, low level theta-e differences are in excess of 25 K and DCAPE values in excess of 1000 J/kg support the risk of severe wind gusts.

Shear is still somewhat marginal, but largely a moot point as the atmosphere has shown its cards. 0-3km shear is lacking as well, though it is oriented from west to east and with increasing low level CAPE, it does warrant watching for potential mesovortex development and the potential for a few spin up tornadoes. Overall, a more outflow dominate line is the preferred mode, but anywhere this line remains balanced will be an area to watch for mesovortex development.

Bottom line - the wind threat is greatest with the incoming line, highlighted by areas in the moderate risk (Lafayette, Green, Rock, Walworth, Racine and Kenosha Counties). The risk toward counties in the I-94 corridor is more conditional on storm organization and cold pool conglomeration into a linear mode in the next few hours. The PDS Severe Thunderstorm Watch handles the areas at greatest risk well. Areas further north can still expect thunderstorm development and a few strong/severe storms with wind gusts the primary concern.

GAGAN

SHORT TERM. (Issued 340 AM CDT Mon Aug 10 2020)

Today and Tonight:

There is a shallow low level inversion this morning, which could cause some patchy fog to develop in low lying areas and river valleys. Any fog that develops this morning should begin to dissipate shortly after sunrise.

Scattered thunderstorms are expected to develop and move across southern Wisconsin from late this morning into the evening hours. These thunderstorms will be associated with the passage of the cold front. A few strong/severe storms will be possible, with instability pushing 3000+ J/kg and deep layer bulk shear around 20 to 25 knots. There remains some uncertainty with the timing and areal coverage of these thunderstorms, due to the only forcing being associated with the cold front.

Quiet conditions are expected to return by later tonight, as drier air and high pressure moves into the region. The high pressure will bring clearing skies and light winds. With calm conditions expected overnight, it's not out of the question for some fog to develop.

Patterson

LONG TERM. (Issued 340 AM CDT Mon Aug 10 2020)

Tuesday through Wednesday:

Models are in pretty good agreement with high pressure lingering over the region Tuesday into Tuesday night, then slowly moving to the east on Wednesday. This should bring a period of dry conditions and warm temperatures to the area. Lake breezes should occur by each afternoon near Lake Michigan.

Wednesday Night through Thursday Night:

Models are generally showing a broad 500 mb trough developing over the middle Mississippi River Valley northward into Wisconsin Wednesday night into Thursday night. The main southerly low level jet feed of moisture should remain west of the area during this period. Forecast soundings do suggest some instability develops by Thursday.

The upward vertical motion fields are rather weak during this time, so uncertainty remains with if any showers and storms develop. Ensembles also show very low QPF occurring during these periods. For now, left small PoPs going for this period, though it may trend drier if the main low level jet feed remains to the west, and upward vertical motion fields remain weak. Warm and somewhat more humid conditions are expected during this period.

Friday Through Sunday:

Fairly large amount of uncertainty exists during this period across the area, as differences abound between the GFS and ECMWF. The GFS pushes the weak 500 mb trough east of the area Friday night, with generally zonal flow occurring over the weekend. It does have a vorticity maximum moving east through the region by Sunday.

The ECMWF has a cutoff 500 mb low that sits over Iowa and Illinois Friday into Saturday, before shifting east Saturday night and Sunday. It then brings another shortwave trough southeast into the region for Sunday. Thus, the ECMWF is wetter during this period, though both have QPF in the area Sunday. The ensembles are generally showing very low QPF and PoPs for most of this period, reflecting the uncertainty.

For now, kept blended model PoPs with rather low confidence on what will occur during this period. Temperatures remain warm with humid conditions lingering.

JJW

AVIATION. (Issued 1021 AM CDT Mon Aug 10 2020)

For the 18Z TAFs:

IFR to MVFR ceilings will linger over the next few hours. Ceilings should improve as we head into the afternoon, but scattered thunderstorms are expected to develop and move across southern Wisconsin with the cold front. There is a concern for storms to be severe with gust up to 60 knots and maybe some quarter sized hail. Expect flight conditions to deteriorate to MVFR/IFR values within any thunderstorm. Once the cold front passes northwest winds and VFR conditions move in.

RAH

MARINE. (Issued 340 AM CDT Mon Aug 10 2020)

Scattered thunderstorms are expected to move across the lake from around midday into this evening, with the passage of a cold front. A few strong/severe storms are possible during this period. Southerly winds are expected to persist through the morning hours, before shifting to northwesterly by this evening. Quiet conditions are expected to return by later tonight, as high pressure builds into the area.

Patterson

MKX WATCHES/WARNINGS/ADVISORIES. WI . None. LM . None.


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
KNSW3 - Kenosha, WI 13 mi40 min S 8.9 G 8.9 77°F 1011.5 hPa (-2.4)
45187 18 mi20 min SSE 5.8 G 7.8 77°F 73°F1 ft
MLWW3 - Milwaukee, WI 22 mi30 min SE 15 G 17 76°F
45013 27 mi40 min SE 12 G 14 74°F 71°F2 ft1011.6 hPa (-2.4)
WHRI2 - Waukegan Harbor, IL 27 mi100 min SSE 11 G 11 80°F
45007 - S MICHIGAN 43NM East Southeast of Milwaukee, WI 34 mi30 min S 7.8 G 7.8 75°F 73°F1011.8 hPa75°F
45174 41 mi20 min SSE 7.8 G 9.7 78°F 74°F1 ft1011.4 hPa74°F
PWAW3 - Port Washington, WI 47 mi60 min S 8 G 11 80°F 1012.2 hPa

Wind History for Calumet Harbor, IL
(wind in knots)    EDIT      (on/off)   Help
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
10
AM
11
AM
12
PM
1
PM
Last
24hr
S9
G15
S12
G17
S9
G17
S10
G16
S12
G16
S9
G14
S7
G12
S7
G11
N7
G12
SE5
E8
SE4
S4
S6
S8
G11
S6
G9
S9
G12
S7
G10
S9
G12
S8
G12
S9
G14
SW6
G13
S7
G11
S12
1 day
ago
S8
G12
S6
G13
S9
G13
S11
G15
S9
G17
S11
G15
S9
G15
S8
G12
S6
S7
G11
S6
G9
S8
S7
S8
G11
SW6
G9
S6
S7
S5
S6
SW5
S6
G10
S9
S8
G13
S11
G17
2 days
ago
NE10
NE8
G11
NE8
E9
E9
E4
S6
S5
S5
S5
S5
S4
S4
S3
S6
S4
S5
G8
S8
G12
S9
G13
S11
G16
S10
G13
S11
S10
G13

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Racine, Batten International Airport, WI8 mi47 minS 118.00 miMostly Cloudy82°F75°F79%1011.5 hPa
Kenosha, Kenosha Regional Airport, WI18 mi47 minSSW 510.00 miOvercast86°F75°F70%1011.5 hPa
Milwaukee, General Mitchell International Airport, WI20 mi48 minSSW 910.00 miPartly Cloudy84°F73°F72%1010.7 hPa
Chicago/Waukegan Regional Airport, IL24 mi45 minESE 48.00 miMostly Cloudy82°F75°F79%1010.5 hPa

Link to 5 minute data for KRAC

Wind History from RAC (wind in knots)
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
10
AM
11
AM
12
PM
1
PM
Last 24hrSE9SE11
G17
S14
G22
S12S9NW15
G24
CalmS5SW8S7S7SW5S6S9S5SW6S7S7S8SW9W8SW5CalmS11
1 day agoS11S13S13S11
G23
S63SW7SW7SW4SW6SW7SW9SW8SW7SW6SW5SW3Calm3E7SE6S5S9SE10
2 days agoSE9S12
G19
S8SE7SE9SE7SE5SE5S3S3SW3S3CalmS4S5SW5SW6S7S8SW11SW10
G18
S12S13
G19
SW9
G17

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 Milwaukee/Sullivan, WI (14,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Milwaukee, 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.