Tuesday, May23, 2017 L-36.com


Marine Weather and Tides
Hettick, IL

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 5:37AMSunset 8:18PM Tuesday May 23, 2017 1:49 AM CDT (06:49 UTC) Moonrise 3:25AMMoonset 4:46PM Illumination 6% Phase: Waning Crescent; Moon at 27 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 Hettick, IL
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location: 39.38, -90.06     debug


Area Discussion for - St. Louis, MO
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Fxus63 klsx 230453
afdlsx
area forecast discussion... Updated aviation
national weather service saint louis mo
1153 pm cdt Mon may 22 2017

Short term (through late Tuesday afternoon)
issued at 345 pm cdt Mon may 22 2017
southwest-northeast oriented area of showers and a few thunderstorms
will continue to shift mainly northeastward over the next several
hours. This area of precipitation looks like it is mainly forced by
strong upper-level jet dynamics in conjunction with weak low-level
moisture convergence. These forcing mechanisms begin to shift slowly
southeastward this evening into the overnight hours so have pops
also raising across portions of central missouri into west-central
illinois during these hours. Very limited instability as of 1900 utc
so thinking this will be mainly showers, especially after mid
evening when the limited instability we currently have is forecast
to wane nocturnally. Lows tonight look to be near normal for most
locations in the 50s to near 60 degrees.

Cold front will very slowly progress southeastward through the
day on Tuesday with a continued threat for precipitation. Chances
of thunder will increase by midday as midlevel low and its
associated cold pocket aloft move toward the area helping to
significantly increase midlevel lapse rates. Highest chance of
showers and storms because of the timing of the cold front will be
across central portions of the forecast area. Highs on Tuesday
will be dependent on frontal timing as well as
prevalence/thickness of cloud cover and precipitation chances.

Coolest locations are expected to be across northwestern sections
of the forecast area with highs in the low 60s and warmest areas
including portions of southwest illinois and southeast missouri
topping out in the low 70s.

Gosselin

Long term (Tuesday night through next Monday)
issued at 345 pm cdt Mon may 22 2017
track of the upper low is a little further west today, with it
moving down along the mississippi river on Wednesday. Still looks
like Tuesday night into Wednesday night will have a chance of
showers under the upper low before drier weather is expected as
shortwave ridge moves into the area from the west. Then it looks
like it may be active Friday into Sunday as a frontal boundary will
become quasi-stationary over the area and several shortwave troughs
move across missouri and illinois in west southwesterly flow aloft.

The GFS is showing the atmosphere becoming quite unstable with quite
a bit of deep layer shear early this weekend, so will have to watch
out for a few strong to severe thunderstorms. ECMWF and GFS begin
to diverge in solutions by Sunday into Monday which brings
uncertainty in the forecast by early next week.

Still have temperatures below normal under the upper low Wednesday
and Thursday, but they will climb back to near normal late week into
the holiday weekend.

Britt

Aviation (for the 06z tafs through 06z Tuesday night)
issued at 1150 pm cdt Mon may 22 2017
main TAF concerns will be on precipitation trends along with
lowering cigs. An area of showers continues to push through
north- central mo this evening, toward cou and uin. A few of these
showers may just be heavy enough at uin to bring brief MVFR vsbys.

Showers will persist overnight at cou/uin, but much of the
activity should stay just northwest of the st. Louis metro sites.

Showers will move east towards the st. Louis sites by Tuesday
morning, with a few thunderstorms possible across the area Tuesday
afternoon as a cold front works through the region. Along and
behind the front, some MVFR CIGS look likely Tuesday morning
mainly at uin/cou. The passage of the front will bring a wind
shift to the wnw Tuesday afternoon into Tuesday evening.

Specifics for kstl:
vfr conditions expected overnight, with showers and a few storms
possible on Tuesday. Current shower activity over northern mo
should remain just northwest of the terminal through much of the
overnight hours, but a few showers may begin to creep into the
region by Tuesday morning. A better chance for showers and a few
thunderstorms will come Tuesday afternoon as a cold front swings
through. This front will bring a wind shift to the wnw as it
passes by.

Kd

Lsx watches/warnings/advisories
Mo... None.

Il... None.

Wfo lsx


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Litchfield Municipal Airport, IL25 mi74 minN 710.00 miPartly Cloudy59°F56°F92%1013.5 hPa

Wind History from 3LF (wind in knots)
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Last 24hrS3CalmCalmCalmCalmS3S5S6S8S9S11
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1 day agoW11
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2 days agoE8E11E10E11
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S14SW10S8S9SW9SW5CalmSE3SE4W7S7S7SW9

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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Weather Map
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IR Satellite Image from GEOS
east_satellite

GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for St. Louis, MO (2,6,7,8)
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Ground Weather Radar Station Central Illinois, IL
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weather_mapweather_map weather_map

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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.