Friday, April3, 2020
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Marine Weather and Tides
Winchester, MO

Version 3.4 		NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
Sunrise 6:42AMSunset 7:28PM Thursday April 2, 2020 11:29 PM CDT (04:29 UTC) Moonrise 12:10PMMoonset 2:22AM Illumination 76% 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 022345 AFDLSX

Area Forecast Discussion . Updated Aviation National Weather Service Saint Louis MO 645 PM CDT Thu Apr 2 2020

SHORT TERM. (Through Late Friday Night) Issued at 415 PM CDT Thu Apr 2 2020

Upper ridge has moved east of the area late this afternoon and weak moisture transport has begun over the region. Scattered showers and thunderstorms have been over western Missouri most of the day. Do expect the showers to move east toward central and northeast Missouri over the next few hours as weak low level moisture convergence moves east into the CWA. This trend will continue through the night as moisture convergence increases across the area as the low level jet sets up.

Expect showers and scattered thunderstorms to expand over the area on Friday and Friday night as the NAM/GFS has been consistent in bringing an upper trough across the northern CONUS that will increase ascent across Missouri and Illinois. This will bring an attendant cold front across Missouri and Illinois Friday and Friday night. Expect there to be enough moisture transport ahead of this system to continue likely/categorical PoPs for showers with chance of thunderstorms During this period.

Lows tonight will only be in the upper 40s and upper 50s with clouds and the winds staying up. Highs tomorrow will not be as warm as today with clouds and rain chances. Lows on Friday will be colder with the front moving through.

Britt

LONG TERM. (Saturday through Next Thursday) Issued at 415 PM CDT Thu Apr 2 2020

Saturday looks like a cold day with clouds, showers, and cold air advection. Expect highs only in the lower-mid 50s. GEFS and EPS are still showing an upper ridge moving across the Missouri and Illinois over the area on Sunday at the same time a surface high will move across the area bringing at least one relatively dry day. Then expect showers and scattered thunderstorms to return to the area early next week when a warm front will move north across the area on Monday followed by a mid level trough with an attendant cold front that will move across the Midwest on Tuesday night.

Temperatures are expected to gradually warm up Sunday into Tuesday as 850mb temperatures warm from +5C to +15C. Temperatures will cool down be next Thursday behind the cold front.

Britt

AVIATION. (For the 00z TAFs through 00z Friday Evening) Issued at 645 PM CDT Thu Apr 2 2020

VFR conditions will prevail at the TAF sites through tonight with a band or two of showers passing through. Best thunder probs tonight will be this evening in central MO and have gone with VCTS at KCOU. Cold FROPA looks set for 18-20z/Fri for KUIN and KCOU with what should be a quick drop in CIGs and substantial increase in PoPs. A few TSRA are expected to develop ahead of the front for the STL metro sites late Friday afternoon and carry into early evening and have handled with VCTS at this time.

SPECIFICS FOR KSTL: For the extended 6-hour period, expecting cold FROPA between 03-05z/Sat, with a drop in CIGs, for now to low-end MVFR but IFR is probable at some point beyond the valid period. Otherwise, big increase in rain chances near and behind front but should be mostly if not all SHRA by this time.

TES

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 mi35 minESE 410.00 miLight Rain61°F45°F56%1016.2 hPa
St. Louis Lambert International Airport, MO15 mi3.6 hrsSE 1510.00 miOvercast66°F41°F40%1015.4 hPa
St. Louis Downtown Airport, IL20 mi36 minSSE 710.00 miFair59°F44°F58%1016.1 hPa

Link to 5 minute data for KSUS

Wind History from SUS (wind in knots)
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PM
Last 24hrSE3E33SE4SE5CalmE3E334S7E7SE10
G16		SE7
G19		E9SE9E8
G16		--------E7SE8SE4
1 day agoE11E4E4CalmCalmCalmCalmCalmCalm35E4334E7E6E6SE5SE5E7E5E4E6
2 days agoNW3CalmCalmCalmCalmE6NE6CalmCalmNE8E4NE5W43N7
G17		N5
G17		NW13N11
G15		N10--NE9NE7E12NE11
Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for St. Louis, MO (0,6,7,8)
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Ground Weather Radar Station St. Louis, MO
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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 numerous 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.