Marine Weather and Tides
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 7:04AM||Sunset 4:29PM||Friday December 13, 2019 1:17 AM CST (07:17 UTC)||Moonrise 7:00PM||Moonset 9:26AM||Illumination 98%|
7 Day Forecast for Marine Location Near Urbana, ILHourly EDIT Help
Area Discussion for - Central Illinois, IL  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KILX 130506 AFDILX
Area Forecast Discussion National Weather Service Lincoln IL 1106 PM CST Thu Dec 12 2019
SYNOPSIS. Issued at 340 PM CST Thu Dec 12 2019
Brisk southwest winds will taper off late this afternoon into this evening. Relatively mild temperatures are in store for tonight and Friday with lows around 30 tonight and highs in the mid 40s Friday, then a cold front will arrive Friday night, bringing temperatures back below normal by Sunday. The cold front will also bring a chance for light rain and snow Saturday, as well as some patchy freezing drizzle as precipitation ends. A stronger storm system will likely arrive late in the weekend and may bring accumulating snow to the region Sunday night and Monday.
UPDATE. Issued at 741 PM CST Thu Dec 12 2019
Earlier high clouds over eastern Illinois have moved out, leaving a stratocumulus deck with a rather sharp edge from near Winchester to the southern tip of Lake Michigan. Temperatures in the clear area have dipped into the mid-upper 30s, while lower 40s linger underneath the clouds. The southeast third of the forecast area should remain fairly clear this evening, before these clouds finally move in from the west. Earlier forecast generally only needed some minor adjustments for the cloud and temperature trends.
SHORT TERM. (This evening through Friday) ISSUED AT 340 PM CST Thu Dec 12 2019
Weak high pressure will bring dry conditions through Friday, as well as lighter winds, although with plenty of continued cloud cover. Temperatures will be relatively mild in the warmer air mass transported into the area with today's southerly winds. Lows tonight should be around 30 and highs Friday in the mid 40s.
LONG TERM. (Friday night through Thursday) ISSUED AT 340 PM CST Thu Dec 12 2019
An upper trough will drive a cold front into central IL Saturday, ushering in colder temperatures again, as well as chances for light rain and snow. Temperatures support a messy mix of rain, snow, and even brief freezing rain and drizzle as surface temperatures approach the freezing mark Saturday morning and again Saturday evening before precipitation fully ends, while a marginal warm layer accompanies the onset of precipitation and some loss of ice aloft accompanies the end of precipitation as moisture depth decreases.
A stronger storm system will arrive in the region Sunday as warm advection aloft precedes a low that appears to be headed east- northeastward up the Ohio River Valley Monday. The 12Z model cycle seems to be more consistent than previous cycles with this track, although some timing and precipitation amount discrepancies continue. Nevertheless, snow looks to be predominant along the I-72 corridor into Danville northward, while a mix of rain, snow, and possibly freezing rain could affect areas closer to I-70 southward. Moderate snow amounts in the neighborhood of a few inches appear likely across much of central IL, although GFS ensemble plumes continue to advertise a wide spectrum of accumulation possibilities.
Dry weather and slightly below normal temperatures are on track for midweek following Monday's system.
AVIATION. (For the 06Z TAFS through 06Z Friday night) Issued at 1106 PM CST Thu Dec 12 2019
VFR conditions expected through the period. While some clouds are occurring as low as 5,000 feet late Thursday evening, any MVFR type clouds expected to remain well to the northwest. Southerly winds are slowly diminishing and are not gusty anymore, but should continue lowering to around 5 knots before sunrise, and remain in that range through Friday afternoon.
ILX WATCHES/WARNINGS/ADVISORIES. NONE.
UPDATE . Geelhart SYNOPSIS . 37 SHORT TERM . 37 LONG TERM . 37 AVIATION . Geelhart
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|University of Illinois - Willard, IL||6 mi||25 min||S 7||10.00 mi||Fair||30°F||26°F||85%||1018.5 hPa|
|Rantoul National Aviation Center Airport, IL||13 mi||43 min||SSE 5||10.00 mi||Fair||29°F||26°F||90%||1017.9 hPa|
Link to 5 minute data for KCMI
Wind History from CMI (wind in knots)
|1 day ago||W||SW||SW||SW||SW||SW||S||S||SW||SW||SW||NW||NW||Calm||Calm||NE||NE||NE||E||E||E||E||E||E|
|2 days ago||W|
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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 Central Illinois, IL (2,6,7,8)(on/off)  Help
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