Saturday, November28, 2020
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L-36.com

Marine Weather and Tides
Urbana, IL

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 6:51AMSunset 4:30PM Saturday November 28, 2020 9:49 PM CST (03:49 UTC) Moonrise 4:43PMMoonset 6:04AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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
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7 Day Forecast for Marine Location Near Urbana, IL
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location: 40.11, -88.21     debug


Area Discussion for - Central Illinois, IL
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FXUS63 KILX 290133 AFDILX

Area Forecast Discussion National Weather Service Lincoln IL 733 PM CST Sat Nov 28 2020

SYNOPSIS. Issued at 253 PM CST Sat Nov 28 2020

Dry and seasonable weather will continue through tomorrow. However, a weather system will move northeast across the southern Mississippi valley and spread precipitation across parts of the eastern half of Illinois Sunday night through Monday. Gusty northwest winds are expected behind this system as much colder air moves into the region for next week.

UPDATE. Issued at 733 PM CST Sat Nov 28 2020

Just a few high clouds moving across the state so far this evening, but a larger cirrus shield is advancing northeast through Missouri. Main arrival of these clouds into central Illinois will be after midnight. Southwest winds expected to persist through the night, keeping temperatures milder than last night, but lows at or just below freezing are still likely. Some minor updates have been made to the gridded forecasts to account for latest trends, but the overall forecast is on track.

SHORT TERM. (This evening through Sunday) ISSUED AT 253 PM CST Sat Nov 28 2020

High pressure located southeast of the CWA will continue to bring unseasonably warm and dry weather to the area through Sunday. Another warm day is expected tomorrow with plenty of sunshine and breezy southwest winds. High are expected to reach to around 50 by afternoon.

LONG TERM. (Sunday night through Saturday) ISSUED AT 253 PM CST Sat Nov 28 2020

In the southern stream, a weather system will move northeast from the southern Mississippi valley toward the Carolinas. In the northern stream, a cold front will push into the area. These two systems will phase into one, but not until Monday night over the eastern US. As these two systems phase, clouds and precip will spread across the eastern half of the CWA for Sunday night through Monday. The precip should begin as rain but then quickly become mixed with snow, and then later changing to all snow late Sunday night, as colder air advects into the area behind the cold front. The greatest chance of precip will remain east of I-57, but some of it could extend as far back as I-55, though any amounts of precip will be very small west of I-57. At this point, any snowfall amounts looks to be less than an inch and confined to areas east of I-57. Gusty northwest winds will accompany the colder air quickly moving into the area Sun night and Monday. Gusts to around 35 mph should be common across the area through the Sun night through Monday period.

Once the effects of this system move east of the CWA, dry and colder weather is expected for most of the coming week. The coldest night looks to be Mon night when overnight lows will range from 17 in the northwest to the mid 20s in the southeast. Temps will moderate a little through the week, but below normal temps are expected.

There is a chance of another weather system effecting the CWA late in the week, but the models can not agree on timing or placement right now. So, a blended ensemble forecast looks fine for Thur night through Sat, which only produced some slight chances over the CWA.

AVIATION. (For the 00Z TAFS through 00Z Sunday evening) Issued at 510 PM CST Sat Nov 28 2020

VFR conditions expected the next 24 hours, with a gradual increase in cloud cover overnight into Sunday. Heights generally expected to be above 10,000 feet, though a late afternoon steady decrease is expected along a cold front. This front will cross the central Illinois TAF sites between 19-24Z, latest at KCMI, with winds turning northwest and increasing to around 10 knots.

ILX WATCHES/WARNINGS/ADVISORIES. NONE.

UPDATE . Geelhart SYNOPSIS . Auten SHORT TERM . Auten LONG TERM . Auten AVIATION . Geelhart


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
University of Illinois - Willard, IL6 mi57 minSSW 8 miFair33°F30°F89%1021.4 hPa
Rantoul National Aviation Center Airport, IL13 mi75 minSSW 710.00 miFair37°F32°F83%1020.7 hPa

Link to 5 minute data for KCMI

Wind History from CMI (wind in knots)
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Last 24hrW6NW5W5NW5W5CalmW4W4W4SW4SW3W4SW5SW4S5S7S10S12S9S6S7SW9S8S8
1 day agoS8S3S5CalmCalmSE4S4SE3S5S6S6S4S4SW7W5W6W7W6NW9NW7NW8NW9NW9W5
2 days agoW15W12W12W15
G21
W13W8W10W9W9W9SW10W10W9SW9SW12SW11SW9--SW10SW10S8SW4S5S7

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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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
Ground Weather Radar Station Central Illinois, IL
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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 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.