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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 6:56AM | Sunset 8:42PM | Saturday August 17, 2019 9:04 AM EDT (13:04 UTC) | Moonrise 9:09PM | Moonset 7:47AM | Illumination 96% |  |
LMZ745 Expires:201908171515;;766783 Fzus53 Klot 170858 Nshlot Nearshore Marine Forecast National Weather Service Chicago/romeoville Il 358 Am Cdt Sat Aug 17 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. Lmz743>745-171515- Calumet Harbor To Gary-gary To Burns Harbor- Burns Harbor To Michigan City- 358 Am Cdt Sat Aug 17 2019
Today..Southwest winds 5 to 10 kt becoming south in the late morning and afternoon. Slight chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon. Waves 1 to 2 ft.
Tonight..South winds 10 to 15 kt. Chance of showers and Thunderstorms. Waves 1 ft or less.
Sunday..Southwest winds 15 to 25 kt. Chance of showers and Thunderstorms. Waves 1 to 3 ft.
Sunday night..Southwest winds 10 to 15 kt. Chance of showers and Thunderstorms. Waves 1 to 3 ft subsiding to 1 ft or less after midnight.
Today..Southwest winds 5 to 10 kt becoming south in the late morning and afternoon. Slight chance of showers and Thunderstorms in the morning, then showers and Thunderstorms likely in the afternoon. Waves 1 to 2 ft.
Tonight..South winds 10 to 15 kt. Chance of showers and Thunderstorms. Waves 1 ft or less.
Sunday..Southwest winds 15 to 25 kt. Chance of showers and Thunderstorms. Waves 1 to 3 ft.
Sunday night..Southwest winds 10 to 15 kt. Chance of showers and Thunderstorms. Waves 1 to 3 ft subsiding to 1 ft or less after midnight.
LMZ745
7 Day Forecast for Marine Location Near Winamac, IN
Hourly EDIT Helplocation: 41.07, -86.71 debug
Area Discussion for - Northern Indiana, IN
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kiwx 171041 afdiwx area forecast discussion national weather service northern indiana 641 am edt Sat aug 17 2019 Synopsis Issued at 1257 pm edt Fri aug 16 2019 several weak systems will bring periodic chances for showers and thunderstorms today into the start of next week. Highs today will reach the lower 80s. Temperatures and humidity levels will be on the rise, with highs on Sunday potentially reaching the upper 80s to near 90 degrees and continuing into Tuesday. Short term (today and tonight) issued at 242 am edt Sat aug 17 2019 morning water vapor imagery shows a pair of troughs dropping across the upper midwest while sfc obs show a slowing frontal boundary extending from northern mo northeastwards across northern il to over lake michigan. This front should slowly move southeastwards with time in conjunction with the upper trough. Isolated convection has develop over east-central il along this front, and has started to slowly shift eastwards in response to the pivoting axis of the leading trough. Cams have been fairly consistent in spreading this convection across the southern half of the CWA in the 08-12z timeframe. These storms would be moving into an EML of round 700- 1000 j kg with 20-25kt of 0-3km bulk shear. This will keep the chance for a strong to marginally severe storm possible with gusty winds as the primary hazard. As we've already seen with the earlier convection, locally heavy rain will be possible with this round as well as pwats along and south of hwy 30 are between 1.5-1.75". This highly saturated airmass and the deep warm cloud layer will mitigate hail potential as significant melting potential is likely. Fog will likely be much more localized this morning as low level mixing is expected to be greater this morning compared to the past few mornings. The exception is our southern lower michigan counties due to ample ground moisture provided by earlier convection. A brief lull in convective activity is possible after 12z as the secondary trough brings a decaying MCS from ks mo into the western half of the CWA between 16z and 18z. Some gusty wind and heavy rain will be possible as it diminishes over the area. Models show a residual MCV following this MCS to re-invigorate convection this evening tonight along a stalled frontal boundary draped across southern lower michigan. Decent shear, instability, and climatologically high pwats will enable storms to produce strong wind gusts and heavy rainfall. There is potential for flooding for our southern lower michigan counties considering they received 1-2 inches of rain this morning, could receive additional rainfall during the day, and are forecast to have training storms late tonight early Sunday morning. Long term (Sunday through Friday) issued at 242 am edt Sat aug 17 2019 early Sunday morning, a trough over the high plains is forecast to dig across the upper midwest. This is forecast to send a MCS from |
mn ia east-southeastwards into the northwester zones between 12-15z. The MCS will start to lose the upper forcing as it progresses eastwards across the area around midday due to the trough axis quickly lifting into ontario. This will likely result in a relatively dry Sunday afternoon as high temperatures reach into the upper 80s to near 90s. Upper ridge builds across the central plains Sunday night through Tuesday which will keep a low chance for rainfall in the forecast as embedded perturbations with the northwesterly flow drop through the western great lakes. Warm and humid conditions are also expected Monday and Tuesday as mid-70s dewpoints combine with afternoon temperatures in the upper 80s to lower 90s. This will result in afternoon heat index values in the mid to upper 90s both days. The weather pattern transitions for the second half of the work week. Models show a strong closed low dropping across ontario Wednesday and sends a cold front through the area. The result will be cool mornings of the mid 50s and pleasant afternoons in the 70s Thursday into the weekend. Aviation (for the 12z tafs through 12z Sunday morning) issued at 615 am edt Sat aug 17 2019 multiple rounds of convection is possible for both terminals for the 12z TAF cycle. Ongoing convection will continue to move to the east-southeast with time. This should keep thunder out of both terminals, but kfwa should get some light rain. Also ongoing patchy ground fog should also dissipate quickly within the first hour or two of this TAF cycle. A lull in convection is possible roughly from 14z until 18z. By 18z, a decaying MCS moving eastwards from mo il will likely be moving towards the terminals. Have continued prevailing rain for kfwa from the previous forecast, but added a vicinity thunder mention due to slightly better instability this afternoon. Inserted a vicinity mention for ksbn for now as there is some uncertainty with the northwards extent of the mcs. Another chance for convection will be possible for both terminals towards the end of this TAF cycle as yet another MCS will be moving in from the west. Inserted a prob30 group for ksbn as they will be much closer to the track of the mcs. Left mention out for kfwa due to greater uncertainty. Iwx watches warnings advisories In... None. Mi... None. Oh... None. Lm... None. Synopsis... Steinwedel roller cm short term... Cm long term... Cm aviation... Cm visit us 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 |
| BHRI3 - Burns Harbor, IN | 46 mi | 56 min | S 4.1 G 6 | 70°F | 1013.9 hPa | |||
| MCYI3 - Michigan City, IN | 47 mi | 45 min | S 6 G 8.9 | 71°F | 66°F | |||
| CMTI2 - 9087044 - Calumet, IL | 63 mi | 47 min | Calm G 2.9 | 71°F | 1012.6 hPa | 69°F |
Wind History for Calumet Harbor, IL
(wind in knots) EDIT (on/off) Help| 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 24hr | SE G10 | S | S G9 | S G11 | S G11 | S G15 | SW G18 | S G14 | S G15 | S G13 | S G13 | S G11 | SW G7 | SW G9 | SW G7 | SW | SW G5 | SW | SW | SW | SW | SW | SW | SW |
| 1 day ago | N G12 | NW G14 | N G16 | NW G16 | N G17 | N G15 | N G13 | N G12 | N G11 | N G11 | NE | N G8 | N | N | NE | NE | -- | S | S | S | SE | S G7 | SE | S |
| 2 days ago | S | S | SW | NE | NE | N G10 | N G12 | N G12 | N G10 | N G13 | N G13 | N G11 | N G11 | N G10 | NW G12 | NW G12 | NW G11 | NW G10 | N G11 | N | NW G12 | NW G10 | N G10 | N G13 |
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 |
| Starke County Airport, IN | 18 mi | 90 min | SW 3 | 10.00 mi | Mostly Cloudy | 64°F | 62°F | 94% | 1013.5 hPa |
Link to 5 minute data for KOXI
Wind History from OXI (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 PM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | |
| Last 24hr | S | S | S | S | S | S | S G14 | S G14 | S | S G14 | S | S | Calm | S | S | S | S | SW | SW | SW | Calm | SW | Calm | |
| 1 day ago | NW | NW | NW | N | NW | NW | NW G15 | NW | NW | NW | NW | N | Calm | Calm | Calm | Calm | Calm | Calm | Calm | |||||
| 2 days ago | Calm | Calm | S | SW | Calm | SW | W | N | N | N | N | Calm | NW | Calm | Calm | Calm | SW | SW | W | SW | W | Calm | Calm | N |
Tide / Current Tables for
EDIT Weekend mode (on/off) (on/off) HelpTide / Current Tables for
EDIT (on/off) HelpWeather Map and Satellite Images
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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 Northern Indiana, IN (9,2,3,4)
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Ground Weather Radar Station Northern Indiana, IN
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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. |