Saturday, June23, 2018 L-36.com


Marine Weather and Tides
Winchester, MO

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 5:37AMSunset 8:32PM Saturday June 23, 2018 4:26 PM CDT (21:26 UTC) Moonrise 3:23PMMoonset 1:52AM Illumination 80% Phase: Waxing Gibbous; Moon at 10 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 231735
afdlsx
area forecast discussion... Updated aviation
national weather service saint louis mo
1235 pm cdt Sat jun 23 2018

Short term (through late tonight)
issued at 332 am cdt Sat jun 23 2018
primary concern for today and tonight is pops. The low which
brought us clouds and rain over the past several days has moved east
into the ohio valley. Northwest flow aloft in the wake of the low
will become more zonal today as the day progresses. This will allow
a shortwave currently over kansas to move into missouri during the
afternoon. Expect the greatest chances for thunderstorms to be
southwest and south of the forecast area today along with the
greatest instability. Forecast soundings show a decent capping
inversion over the area this afternoon, but this shortwave moving
in from the west could weaken the cap enough for isolated
afternoon convection to develop. All short range guidance
including the cams show some evidence of this with isolated light
qpf and isolated convection this afternoon. Short range guidance
shows 1000-1500 j kg MLCAPE this afternoon so there should be more
than enough instability for any updrafts that go up to produce
thunder. Have therefore bumped up pops across the area to around
20%.

The best chance for storms tonight still looks well south of our
forecast area along the axis of greatest baroclinicity. Short range
guidance members do develop a 25-30kt low level jet over arkansas
which moves the baroclinic zone a bit northward overnight. Can't
rule out a few storms poking up into southeast missouri southern
illinois late, so have some 20-30 pops to cover. Temperatures
should be closer to normal in the low to mid 80s today with
occasional breaks in the clouds and much less precip coverage than
the past couple of days.

Carney

Long term (Sunday through Friday)
issued at 332 am cdt Sat jun 23 2018
warmer, near normal temperatures can be expected on Sunday as an
upper level ridge builds over the region. An MCS may move eastward
through parts of the forecast area Sunday night ahead of an
approaching southwest flow shortwave and along and north of a warm
front lifting slowly north-northeastward into the area. A backdoor
type cold front will also sag south-southwestward into parts of
northeast mo and southern il by 12z Monday as a surface ridge builds
southward through the great lakes region. The chance of convection
continues Monday and Monday night as a warm front lifts north-
northeastward through the forecast area, while an upper level
trough low moves eastward through the northern plains. This upper
level trough low will move into the great lakes region Tuesday and
Tuesday night and send a weak cold front surface trough
southeastward into the forecast area which will be the focus for the
development of showers storms Tuesday Tuesday night. An upper level
ridge will build northeastward into the region on Wednesday
beginning a period of hot and humid conditions with afternoon heat
indices possibly reaching 100-105 across parts of the forecast area.

It appears that most of the convection will remain north of the
forecast area, although could not rule out showers and storms
clipping northeast mo and west central il Wednesday night through
Thursday night due to weak "ridge runner" shortwaves over-topping
the upper level ridge. The warmest temperatures should occur
Thursday and Friday with persistent southerly surface winds and
southwesterly low level winds.

Gks

Aviation (for the 18z tafs through 18z Sunday afternoon)
issued at 1232 pm cdt Sat jun 23 2018
MVFR CU persists across the region early this afternoon, but
should lift toVFR at all locations by 20z. Otherwise, light and
variable winds through forecast period. Could see isolated showers
and storms through forecast period, especially this
afternoon evening, but not enough to mention in any of the tafs.

Specifics for kstl:
MVFR CU persists across the region early this afternoon, but
should lift toVFR by 20z. Otherwise, light and variable winds
through forecast period. Could see isolated showers and storms,
especially this afternoon evening, but not enough to mention in
the metro area tafs.

Byrd

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 mi32 minW 9 G 1710.00 miMostly Cloudy83°F64°F53%1007.8 hPa
St. Louis Lambert International Airport, MO15 mi35 minN 1110.00 miMostly Cloudy80°F66°F64%1008.1 hPa
St. Louis Downtown Airport, IL20 mi33 minWSW 610.00 miOvercast82°F64°F56%1008.2 hPa

Wind History from SUS (wind in knots)
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Last 24hrNW12
G18
NW8W6W5NW4W4W5W4W6W4W4CalmCalmCalmSW3SW5W4S55W5NW4W7W3W9
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1 day agoW8W10W5S3SW9CalmCalmCalmCalmW5W5W4W4W5W8W7W8W7NW7W7W8W9NW18
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2 days agoS5SW10
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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 St. Louis, MO (17,4,5,8)
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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.