Sunday, May20, 2018 L-36.com


Marine Weather and Tides
Winchester, MO

Version 3.4
What's New / NOTES
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.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 5:44AMSunset 8:13PM Sunday May 20, 2018 12:52 PM CDT (17:52 UTC) Moonrise 10:00AMMoonset 12:00AM Illumination 33% Phase: Waxing Crescent; Moon at 6 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 Winchester, MO
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location: 38.58, -90.53     debug


Area Discussion for - St. Louis, MO
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Fxus63 klsx 201131
afdlsx
area forecast discussion... Updated aviation
national weather service saint louis mo
631 am cdt Sun may 20 2018

Short term (through late tonight)
issued at 327 am cdt Sun may 20 2018
convective trends continue to be the primary challenge for the next
24 hours. A 500 mb low is meandering over the central plains this
morning. The low will slowly weaken as it drifts northeast today.

The surface reflection of the upper low is very difficult to discern
due to the influences of three waves of convection stretching from
southern oklahoma to central missouri. However, there is a definite
surface boundary with cooler and drier air to the north across much
of iowa, central and western kansas and nebraska, and warmer and
more humid air over missouri and illinois. Short range guidance is
in pretty good agreement with the mass fields... Moving the surface
front slowly east southeast over the next 24 hours. The front moves
so slowly, and the synoptic flow is so weak on either side of the
front, that I do not think it will be the primary focus for
convection. Think mesoscale boundaries from ongoing convection will
be the driver as well as weak isentropic lift over the region will
be the drivers that produce storms. Should be plenty of instability
with 3000+ j kg of MUCAPE and 2000+ MLCAPE this afternoon across
parts of central and eastern missouri as well as southern illinois.

There will probably be a diurnal MAX of activity during the
afternoon and early evening, but can't rule out widely scattered
thunderstorms overnight tonight as well. Temperatures will be very
dependent on precipitation trends... But MOS guidance mid 70s to low
80s looks reasonable.

Carney

Long term (Monday through Saturday)
issued at 327 am cdt Sun may 20 2018
chances for showers and thunderstorms will shift into southeast
missouri and southern illinois as the nam GFS are in good agreement
that the cold front will move slowly southeast across the CWA on
Monday and Monday night. The front will move back north into the
region on Tuesday and Wednesday, but the global models are showing
upper level ridging moving across missouri and illinois which will
keep rain chances low. Chances for showers and thunderstorms will
increase by late in the week when the global models are showing a
trough moving across the midwest along a stalled front.

Temperatures will continue be above normal as 850mb temperatures
remain in the middle to upper teens and ECMWF gfs MOS and gefs
guidance is 5-10f above normal.

Britt

Aviation (for the 12z tafs through 12z Monday morning)
issued at 626 am cdt Sun may 20 2018
vfr flight conditions are expected to prevail outside of
thunderstorms at least through this evening. Otherwise, waves of
storms will continue to move across the area this morning. Unclear
how storms will develop later this afternoon evening at this time,
but additional development across the area looks likely.

Specifics for kstl:
vfr flight conditions are expected outside of thunderstorms at
least through the evening hours. Another wave of storms currently
moving through southwest missouri will likely move into the
vicinity of the terminal between 15-16z. Additional development
looks likely late this afternoon into the evening, but timing and
coverage is unclear at this time.

Carney

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
St. Louis, Spirit Of St. Louis Airport, MO8 mi59 minW 310.00 miOvercast69°F64°F84%1020.2 hPa
St. Louis Lambert International Airport, MO15 mi62 minW 510.00 miLight Rain70°F66°F90%1020.6 hPa
St. Louis Downtown Airport, IL20 mi60 minNW 310.00 miMostly Cloudy71°F66°F84%1020.6 hPa

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Last 24hrS4W4W9
G34
--S7W5W3CalmW10
G15
CalmS13
G28
--SW7NW5CalmCalmCalmW11
G21
E3SE5SE6S5W8
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1 day agoN6NE7NE5NE5N3N3NE3NE4E4NW3NW3CalmCalmCalmW3CalmCalmCalmCalmSW6SW4W3CalmNW4
2 days agoE11
G17
NE9E11E12NE9W6SW6W4W3CalmCalmCalmE7CalmCalmCalmCalmE4E3E5NE6NE6N5N6

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 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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for St. Louis, MO (13,3,4,5)
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Ground Weather Radar Station St. Louis, MO
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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.