|
Marine Weather and Tides
Version 3.4 |
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
| Sunrise 6:02AM | Sunset 7:45PM | Tuesday August 20, 2019 8:31 PM CDT (01:31 UTC) | Moonrise 10:27PM | Moonset 10:45AM | Illumination 71% |  |
LMZ741 Expires:201908210315;;945369 Fzus53 Klot 201957 Nshlot Nearshore Marine Forecast National Weather Service Chicago/romeoville Il 257 Pm Cdt Tue Aug 20 2019 For Waters Within Five Nautical Miles Of Shore On Lake Michigan Waves Are Provided As A Range Of Significant Wave Heights, Which Is The Average Of The Highest 1/3 Of The Waves, Along With The Average Height Of The Highest 10 Percent Of The Waves Which Will Occasionally Be Encountered. Lmz740>742-210315- Winthrop Harbor To Wilmette Harbor- Wilmette Harbor To Northerly Island- Northerly Island To Calumet Harbor- 257 Pm Cdt Tue Aug 20 2019
Tonight..Variable winds less than 10 kt becoming west 5 to 10 kt late this evening. Patchy fog after midnight. Slight chance of showers late. Waves 1 ft or less.
Wednesday..Northwest winds 10 to 15 kt becoming north 10 to 20 kt in the afternoon. Patchy fog in the morning. Slight chance of showers through the day. Waves 1 to 3 ft building to 2 to 4 ft in the afternoon.
Wednesday night..North winds 10 to 15 kt. Mostly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight.
Thursday..Northeast winds 10 to 20 kt. Mostly Sunny. Waves 1 to 3 ft.
Tonight..Variable winds less than 10 kt becoming west 5 to 10 kt late this evening. Patchy fog after midnight. Slight chance of showers late. Waves 1 ft or less.
Wednesday..Northwest winds 10 to 15 kt becoming north 10 to 20 kt in the afternoon. Patchy fog in the morning. Slight chance of showers through the day. Waves 1 to 3 ft building to 2 to 4 ft in the afternoon.
Wednesday night..North winds 10 to 15 kt. Mostly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight.
Thursday..Northeast winds 10 to 20 kt. Mostly Sunny. Waves 1 to 3 ft.
LMZ741
7 Day Forecast for Marine Location Near Lincolnwood, IL
Hourly EDIT Helplocation: 41.95, -87.63 debug
Area Discussion for - Chicago, IL
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 klot 202355 afdlot area forecast discussion national weather service chicago romeoville, il 655 pm cdt Tue aug 20 2019 Short term 253 pm cdt through Wednesday night... mesolow continues to progress eastward through the area this afternoon. It is very moist, with some instability aloft still present such that we expect showers and isolated thunderstorms to continue through late afternoon before ending. High pressure will nose in from the west this afternoon and evening, and thus expect continued clearing ahead of a cold front across the upper midwest. With the moist conditions in place and weak flow, expect that there will be fog tonight. It could be dense in some areas. The forcing near the front to our north passes well north such that most of the overnight precip should stay out of the area, though some lighter precip could occur ahead of it in the morning early afternoon, with the better chance for some isolated ts across northwest indiana. Meanwhile, additional convection will fire to our west along the southern extension of the boundary across the plains overnight. As additional energy spreads in from the west, some of this may sneak into our south and west counties in the late morning or the afternoon also. We do not think coverage will be too widespread tomorrow, but with these multiple though weaker forcing mechanisms will require us to carry some lower chance precip chances. Kmd Long term 259 pm cdt Wednesday night through Tuesday... a pattern change is on the horizon for the latter part of the week, one featuring drier air and more settled sensible weather. First for Wednesday night as a trough digs in eastern canada, a cold front will be working southward through the region. A short wave will be translating the strengthening mid- to upper-level flow around the trough. This looks to serve as some focus for mid-level ascent along the baroclinic zone at least across the southern forecast area and possibly further north depending on the impulse track. The precipitation with this should be mainly |
showers with a lower lightning threat, especially any lingering activity into early Thursday. As the pressure gradient increases Thursday afternoon south of an incoming canadian surface high to the north, the northeast winds will increase especially over the lake. There is potential for a heightened rip current risk because of this into early Friday. Otherwise these winds will steer in lower dew points on Thursday night resulting in a dry, cooler feel for Friday. The surface high that builds into the eastern great lakes will be sprawling and may keep the area dry all the way through Monday. The GFS does indicate a small chance of some showers Sunday, but the next decent synoptic signature in long range guidance is not until Monday night into Tuesday, and the GFS ensemble generally supports this too. Highs in the warm advection regime ahead of this front could reach into the upper 80s on Monday. Mtf Aviation For the 00z tafs... a convectively-induced low pressure currently near ord mdw gyy will shift SE this evening, allowing light W winds to prevail mid-evening through the night. Mostly clear skies should allow for some br formation at all sites overnight, more so outside of the core of the chicago heat island (dpa gyy rfd). Confidence on br formation is fairly high, but confidence on the range of visibility is low. A cold front will then shift SE across the area by mid-morning Wednesday, clearing out the br but leaving MVFR ceilings in its wake. There is a potential for some ifr ceilings at rfd and dpa with the br and for a short period after the frontal passage. By late Wednesday afternoon, large-scale winds may veer far enough north to allow a lake-enhanced boundary to expand westward into ord mdw gyy. Kluber Lot watches warnings advisories Il... None. In... None. Lm... None. Visit us at http: weather.Gov chicago (all lowercase) follow us on facebook... Twitter... And youtube at: |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a map| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | Pressure | DewPt |
| FSTI2 | 2 mi | 92 min | NNE 1.9 | 73°F | ||||
| OKSI2 | 3 mi | 92 min | SE 1 G 2.9 | 75°F | ||||
| CHII2 - Chicago, IL | 4 mi | 42 min | E 4.1 G 4.1 | 74°F | 73°F | |||
| 45177 | 4 mi | 152 min | 76°F | 1 ft | ||||
| CNII2 | 7 mi | 32 min | Calm G 6 | 73°F | 65°F | |||
| JAKI2 | 12 mi | 92 min | SSW 1 G 1.9 | 74°F | ||||
| 45174 | 13 mi | 22 min | NE 1.9 G 3.9 | 75°F | 1 ft | 1011.1 hPa | ||
| CMTI2 - 9087044 - Calumet, IL | 16 mi | 44 min | WSW 1 G 1.9 | 73°F | 1012.6 hPa | 69°F | ||
| 45186 | 30 mi | 32 min | SSE 3.9 G 5.8 | 75°F | 75°F | 1 ft | ||
| BHRI3 - Burns Harbor, IN | 33 mi | 52 min | S 1.9 G 4.1 | 74°F | 1013.5 hPa | |||
| 45170 | 38 mi | 22 min | SW 1.9 G 3.9 | 74°F | 75°F | 1 ft | 69°F | |
| 45187 | 38 mi | 32 min | SW 1.9 G 3.9 | 78°F | 74°F | |||
| MCYI3 - Michigan City, IN | 41 mi | 42 min | SSW 1.9 G 2.9 | 74°F | 69°F | |||
| KNSW3 - Kenosha, WI | 45 mi | 32 min | SW 1.9 G 2.9 | 75°F | 1013.2 hPa (-0.0) |
Wind History for Calumet Harbor, IL
(wind in knots) EDIT (on/off) Help| 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 | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | |
| Last 24hr | N | N | -- | N | SW | S | S | S | S | S | S | SW | SW | S | SW | S | SW | W | SW G5 | NE | E | SE G11 | S G8 | W |
| 1 day ago | SW G7 | SW | S | S | SW | S | SW | SW | SW G5 | SW | SW | SW | NE | NE | NE | NE | NE | NE | NE | NE G9 | NE | NE | NE | N |
| 2 days ago | SW | S | S | SW | S | SE | S | S | SE | S G10 | S | S | W G10 | -- | N G7 | S G11 | SE G19 | SW G17 | SW G9 | SW G8 | SW G13 | SW G11 | SW G10 | SW G6 |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Chicago, Chicago Midway Airport, IL | 13 mi | 39 min | N 0 | 10.00 mi | Mostly Cloudy | 73°F | 66°F | 81% | 1012.3 hPa |
| Chicago, Chicago-O'Hare International Airport, IL | 14 mi | 41 min | SSW 3 | 10.00 mi | Partly Cloudy | 73°F | 68°F | 84% | 1012.6 hPa |
| Chicago / Wheeling, Pal-Waukee Airport, IL | 18 mi | 40 min | N 0 | 10.00 mi | Fair | 75°F | 68°F | 79% | 1012.8 hPa |
Link to 5 minute data for KMDW
Wind History from MDW (wind in knots)
| 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 | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | |
| Last 24hr | NE | E | E | NE | SE | S | S | S | NW | NW | Calm | SW | W | S | SW | SW | SE | SE | Calm | E | E | S | W | Calm |
| 1 day ago | W | W | Calm | S | S | N | Calm | Calm | Calm | Calm | Calm | Calm | Calm | Calm | E | E | E | E | E | E | E | E | E | NE |
| 2 days ago | SW | S | S | S | S | S | S | Calm | SE | S | S | W | SW G27 | E | E | SE | S G25 | W | SW G16 | W | SW | SW | W | W |
Tide / Current Tables for
EDIT Weekend mode (on/off) (on/off) HelpTide / Current Tables for
EDIT (on/off) HelpWeather Map and Satellite Images
(on/off) HelpWeather Map
GOES 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 Chicago, IL (21,6,7,8)
(on/off) Help
Ground Weather Radar Station Chicago, IL
(on/off) Help
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. |