Friday, June22, 2018 L-36.com


Marine Weather and Tides
Palmyra, IL

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:32AMSunset 8:34PM Friday June 22, 2018 6:17 AM CDT (11:17 UTC) Moonrise 2:21PMMoonset 1:18AM Illumination 66% Phase: Waxing Gibbous; Moon at 9 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 Palmyra, IL
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location: 39.42, -90.06     debug


Area Discussion for - St. Louis, MO
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Fxus63 klsx 220828
afdlsx
area forecast discussion
national weather service saint louis mo
328 am cdt Fri jun 22 2018

Short term (through late tonight)
issued at 325 am cdt Fri jun 22 2018
a cut off 500mb low continues to spin slowly over the mid
mississippi valley. Short range guidance looks to be in good
agreement with the track of the low today. By 00z it should be over
west central indiana with a corresponding strengthening surface low
in the same position. North-northwest flow will develop over the
forecast area today as the system moves east. This will bring
slightly drier air down into the mid mississippi valley late this
afternoon and tonight. Should see an over all decrease in shower
activity from west to east today. Until the low moves east... Expect
scattered showers and a few thunderstorms to continue to move across
the area today. Most of the shower activity should be east of the
area by 00-03z tonight.

With most of the high level cloudiness moving east with the system,
there could be some potential for stratus and fog again
tonight... Though not sure how much the aforementioned drier low
levels will offset this. Added some patchy fog to central missouri
counties... Tho am not confident enough to go with much more than
than that. Temperatures should remain pretty mild through Saturday
morning due to the cloud cover and showers. While the majority of
the area looks to remain in the 70s, I would not be surprised to see
some locations poke up into the low to mid 80s if the clouds break
up for a significant amount of time.

Carney

Long term (Saturday through Thursday)
issued at 325 am cdt Fri jun 22 2018
a weakening MCS may move eastward into southeast mo Saturday
morning. Additional convection is possible Saturday night, mainly
across southeast mo and southwest il where the best low level
moisture and instability will exist as weak shortwaves move eastward
through the region in a nearly zonal mid-upper level flow. Warmer
temperatures are forecast Sunday as an upper level ridge builds over
the central us. Convection can be expected Sunday night and Monday
along and just north of a warm front which will lift north-
northeastward through our forecast area. The chance of showers and
storms will continue, mainly across northeast mo and west central il
Monday night through Tuesday night as an upper level trough low
moves eastward through the northern plains into the great lakes
region. Hot and humid conditions can be expected Wednesday and
Thursday as an upper level ridge builds over the region. The ecmwf
model is more pronounced and amplified with this upper level ridge
compared to the operational GFS which has high mid-upper level
heights over our area, but is flatter with this ridge. It appears
that most of the convection during this time period will remain
north of our forecast area.

Gks

Aviation (for the 06z tafs through 06z Friday night)
issued at 1200 am cdt Fri jun 22 2018
a large upper low will continue to rotate eastward through the
region overnight. Scattered showers will linger around the low,
possibly being accompanied by a brief, localized gust. However,
this will be the exception rather than the rule.

The main concern will be low ifr CIGS late tonight into early
Friday morning. Guidance has been fairly pessimistic around kuin
and kcou with some lifr CIGS around 300-400 ft. CIGS of this level
are less prevalent further south and east toward ksus kstl and
kcps. Carried some ifr with much of the lifr on the northern
periphery of the low. If lifr develops, it may require a tempo
group through the morning hours and will be left for later
updates.

Otherwise, additional shower develop Friday afternoon, mainly over
illinois, as the low departs to the east Friday. Improvement will
be gradual through late Friday into Friday night.

Specifics for kstl:
lingering showers and borderline ifr CIGS will be the main concern
overnight. Expecting lifr to remain north and west of kstl with
relatively light wind. Any shower could be accompanied with a
brief 20kt gust. Given widely scattered nature of the activity,
any direct hit is less than likely.

Low CIGS will lift back to MVFRVFR through Friday morning.

Additional showers are forecast Friday afternoon during diurnal
heating. Most activity will be east of kstl and will continue to
move east through the day. Conditions will largely remain MVFRVFR
through late Friday evening with light winds out of the ne.

Maples

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
Jacksonville Municipal Airport, IL26 mi43 minN 35.00 miLight Rain66°F65°F98%1005.4 hPa

Wind History from IJX (wind in knots)
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Last 24hrCalmSW3CalmSE6SW9SW5SW7CalmNW4W10
G14
W8W10W7W4CalmCalmCalmSW4CalmNW5NW3CalmN5N4
1 day agoSW4S6SW7SW7SW7SW6SW4SW6S5S7S6S10
G15
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G33
E6CalmCalmCalmSE5S4SW3SW4W4
2 days agoSW5SW6SW6SW8W7W8W8SW7SW8W12
G16
SW12W9CalmCalmCalmSW5S5S4SW4SW6SW5SW5CalmS4

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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wmap_A
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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for St. Louis, MO (7,2,3,4)
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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.