Thursday, April18, 2019 L-36.com


Marine Weather and Tides
Jacksonville, IL

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:17AMSunset 7:43PM Thursday April 18, 2019 11:37 AM CDT (16:37 UTC) Moonrise 5:58PMMoonset 5:13AM 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 Jacksonville, IL
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location: 39.73, -90.23     debug


Area Discussion for - Central Illinois, IL
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Fxus63 kilx 181533
afdilx
area forecast discussion
national weather service lincoln il
1033 am cdt Thu apr 18 2019

Update
Issued at 1032 am cdt Thu apr 18 2019
morning satellite moisture channel data depicts plume of deep
moisture feeding up from gulf over ar into il. Front has drifted
to the east slowly during the morning so far, reachding east
central il. Radar trends show best shower advection from southern
il into the SE cwa, which should continue today, even as the front
moves east but slows some by late afternoon. 850mb moisture
transport analysis still shows good advection of moisture into
southeast il which will continue today. Flood watch will continue
today into tonight.

Few bands of light showers behind front over west central
and central sections will also continue to move east today.

Short term (today and tonight)
issued at 318 am cdt Thu apr 18 2019
showers and thunderstorms have overspread the kilx CWA early this
morning... With latest radar trends showing the strongest storms
focused along just north of the i-70 corridor. While instability
continues to wane, an isolated damaging wind gust will remain
possible for the next few hours generally south of a paris to
taylorville line. Will also keep an eye on rainfall rates, as
isolated flash flooding may develop in this area as well. Ongoing
convection will shift E NE of central illinois by mid-morning,
with lingering showers expected for the balance of the day.

Meanwhile, low pressure developing over oklahoma will track
northeastward into the ohio river valley tonight... Bringing a
renewed round of rain to the E SE cwa. Rainfall totals through
tonight will range from as little as one quarter to one half inch
northwest of the illinois river near galesburg... To as much as 2
to 2.50 inches south of i-70. Given the expected qpf, will be
issuing a flood watch for locations along southeast of a
martinsville to flora line from this morning through Friday
morning. With over 2 inches of rain expected across this area,
rivers will experience significant rises and many low-lying spots
will likely flood.

Long term (Friday through Wednesday)
issued at 318 am cdt Thu apr 18 2019
short-wave troughs evident on latest water vapor imagery over
minnesota and north texas will phase into one long-wave
trough... With a closed upper low developing over the lower ohio
river valley on Friday. This will keep rain showers going across
the eastern half of illinois through Friday night, with some
indication that a few showers may linger near the indiana border
into Saturday. Thanks to clouds, showers, and a stiff northerly
wind gusting 30-40mph, high temperatures will be held down
considerably on Friday. Reading will range from the middle to
upper 40s along east of i-57 where showers will be most
prevalent... To the upper 50s in the illinois river valley. A
chilly night will be in store for Friday night, as skies begin to
clear from west to east and winds diminish. Overnight lows will
dip into the middle to upper 30s. Will need to keep an eye on
possible frost formation along west of i-55, but think winds will
remain strong enough to prevent development at this time.

Once the upper low shifts further east, improving weather
conditions will be on tap for this weekend. Highs will return to
the 60s on Saturday... Then will climb well into the 70s for
easter Sunday. After that, a cold front will drop southward into
the region Sunday night into Monday, bringing scattered showers
and thunderstorms. Due to upper ridging over the southeast conus,
this boundary will become stationary over the area and serve as
the focusing mechanism for another round of precip Tuesday into
Wednesday.

Aviation (for the 12z tafs through 12z Friday morning)
issued at 700 am cdt Thu apr 18 2019
12z 7 am surface map shows a cold front pushing eastward to just
east of i-55. Widespread showers and isolated thunderstorms ahead
of cold front in eastern il will affect cmi into mid morning as
cold front pushes toward i-57 while bmi and dec on edge of this
convection. Isolated showers still posible west of cold front at
pia and spi today, while better chance of showers and even
isolated thunderstorms to still be possible into afternoon at cmi.

Ifr to MVFR ceilings to occur next 24 hours with vsbys restricted
to MVFR at times from i-55 east with showers. South winds at dec
and cmi early this morning with switch NW as cold front passes
thru during this morning. NW winds to increase to 10-17 kts with
gusts of 18-25 kts this afternoon and tonight as winds turn
northerly tonight and become strongest toward dawn Friday as
pressure gradient tightens as strong 992 mb surface low ejects ne
along front to SE in by sunrise fri.

Ilx watches warnings advisories
Flood watch through Friday morning for ilz063-067-068-071>073.

Update... Goetsch
short term... Barnes
long term... Barnes
aviation... 07


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Jacksonville Municipal Airport, IL3 mi62 minNW 710.00 miOvercast47°F45°F92%1006.4 hPa

Wind History from IJX (wind in knots)
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Last 24hrS9
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N3CalmCalmN11
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1 day agoSW13S9
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CalmNE3E7E7SE7S9S6S8S10S8S7S6S5S4S5S10
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2 days agoS10S8SE11
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Tide / Current Tables for
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Tide / Current Tables for
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Weather 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Central Illinois, IL (12,3,4,5)
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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.