Thursday, December12, 2019
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Marine Weather and Tides
Jacksonville, IL

Version 3.4
NOTICE
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.
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 7:10AMSunset 4:38PM Thursday December 12, 2019 2:54 AM CST (08:54 UTC) Moonrise 5:15PMMoonset 7:31AM Illumination 100% Phase: Full Moon; Moon at 15 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 Jacksonville, IL
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location: 39.73, -90.23     debug


Area Discussion for - Central Illinois, IL
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FXUS63 KILX 120513 AFDILX

Area Forecast Discussion National Weather Service Lincoln IL 1113 PM CST Wed Dec 11 2019

SYNOPSIS. Issued at 352 PM CST Wed Dec 11 2019

Mostly clear skies are expected this evening with temperatures dropping into the low to mid 20s, then southerly winds will slowly increase overnight, bringing a gradual rise in temperatures through morning. A windy day and mostly cloudy day is in store for for Thursday as southerly 15 to 20 mph and gusts to 30 mph develop by late morning.

UPDATE. Issued at 811 PM CST Wed Dec 11 2019

Temperatures are close to their overnight lows at the present time, with some upper teens currently over the far northern CWA. Not much change anticipated the remainder of the evening, then they should edge upward after midnight as winds turn more to the southeast. High clouds are starting to move into western Illinois, and should also help keep the temperatures from dropping much further. Some updated grids were sent to refine the temperature trends, but no significant changes were needed to the worded forecasts.

SHORT TERM. (This evening through Thursday) ISSUED AT 352 PM CST Wed Dec 11 2019

A shortwave ridge this evening will result in clear skies and a quick drop in temperatures this evening, then a shortwave moving by to the north will bring a quick increase in clouds, mainly high clouds, and an increase in southerly winds early Thursday. Forecast soundings indicate a stable layer near the ground that should limit gustiness despite fast flow aloft, resulting in 15 to 20 mph winds through most of central IL Thursday morning through early afternoon, and gusts up to around 30 mph.

LONG TERM. (Thursday night through Wednesday) ISSUED AT 352 PM CST Wed Dec 11 2019

A cold front arriving Friday night will bring chances for light rain and snow Friday night into Saturday. Initially, rain or a mix is expected before temperatures drop, then light snow looks to become predominant late Saturday as cold air moves in from the northwest. Nevertheless, precipitation amounts are expected to be light, so any accumulations look minimal. Temperatures should reach slightly above normal, highs in the low to mid 40s Friday, then drop slightly below normal, highs ranging from 35 at Galesburg to 44 at Lawrencville

A more significant storm system is possible Sunday night into Monday night. However model consistency has not developed yet, and discrepancies with the storm track either pass the low well to the south, which would likely bring only light snow amounts, or nearer to the I-70 corridor as in the GFS forecast which could bring more significant amounts of precipitation, possibly some rain south of I-70, and a few inches or more snow to much of central IL. Temperatures should generally be well below normal following Saturday's cold front, with Sunday's highs only from the mid 20s to lower 30s, slightly milder Monday with 30s more prevalent, then highs from the mid 20s to lower 30s again Tuesday and Wednesday.

AVIATION. (For the 06Z TAFS through 06Z Thursday night) Issued at 1113 PM CST Wed Dec 11 2019

Have maintained LLWS mention for late tonight and Thursday morning at most of the TAF sites, though KCMI seems a bit borderline at the moment and left them out for now. Core of low level jet projected to move into west central Illinois early Thursday morning and should exit the KPIA area early afternoon. As it does, surface gusts of 20-25 knots should develop, with potential for near 30 knots toward KPIA/KBMI midday and early afternoon. Arrival of a frontal boundary late evening will result in winds diminishing near KPIA.

VFR conditions expected to prevail the next 24 hours. Ceilings will lower ahead of the front Thursday evening near KPIA, but should still stay above 5,000 feet through 06Z.

ILX WATCHES/WARNINGS/ADVISORIES. NONE.

UPDATE . Geelhart SYNOPSIS . 37 SHORT TERM . 37 LONG TERM . 37 AVIATION . Geelhart


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jacksonville Municipal Airport, IL3 mi80 minSE 610.00 miFair28°F23°F86%1027.8 hPa

Link to 5 minute data for KIJX

Wind History from IJX (wind in knots)
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Last 24hrS6S5CalmS6S3SW4SW7W6NW9NW8CalmCalmCalmCalmNE6E6E7E6E8E6E7SE10SE9SE8
1 day agoW12W13W9W7W7W9W8W6W6W7W7CalmW4W4CalmCalmCalmN9NW3NW4W4CalmS3S3
2 days agoS7S6S6S6S6S6S8S6SW9SW8W10
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Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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GEOS Local Image of Midwest    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 Central Illinois, IL (3,6,7,8)
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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 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.