Monday, October25, 2021
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Marine Weather and Tides
Winchester, MO

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:20AMSunset 6:11PM Monday October 25, 2021 3:14 PM CDT (20:14 UTC) Moonrise 8:24PMMoonset 11:06AM Illumination 76% Phase: Waning Gibbous; Moon at 20 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 251941 AFDLSX

Area Forecast Discussion National Weather Service Saint Louis MO 241 PM CDT Mon Oct 25 2021

SHORT TERM. (Through Late Tuesday Night) Issued at 1251 PM CDT Mon Oct 25 2021

An upper level trough was over the OH Valley region with upper level ridging over the Plains this afternoon. A surface low was over northwestern OH with a surface ridge extending from MN south-southwest into northwestern MO. The gusty northwest winds will diminish early this evening as the surface pressure gradient relaxes. The low level cloud deck over our area will break up and clear out tonight. The clearing sky and diminishing winds will result in colder low temperatures tonight with patchy light frost possible. Warmer high temperatures can be expected on Tuesday with the upper level ridge moving eastward into the central US, along with plenty of sun. Looking at the latest CAMs, precipitation associated with an approaching deep upper level trough moving into the Plains should remain just west of our forecast area Tuesday night, although there will be increasing cloudiness.

GKS

LONG TERM. (Wednesday through Next Monday) Issued at 1251 PM CDT Mon Oct 25 2021

Showers and possibly a few embedded storms will spread eastward into central and eastern MO Wednesday as upper level divergence increases over our area ahead of an upper level low moving eastward through OK. Will have a prolonged period of widespread rain and showers Wednesday night into Friday as the upper level low and associated surface low move slowly eastward through northern AR and southern MO Wednesday night and Thursday and into the TN Valley region Thursday night and Friday. With the low pressure system passing to our south, severe weather is not expected and any storms will be elevated and likely isolated. High temperatures will also be on the cool side Thursday and Friday, about 10 degrees below normal. The precipitation should finally shift east of our forecast area by late Friday night with sun and dry weather for the weekend. The models are consistent that a dry cold front will drop southeastward through our forecast area on Sunday with below normal temperatures to begin November.

GKS

AVIATION. (For the 18z TAFs through 18z Tuesday Afternoon) Issued at 1140 AM CDT Mon Oct 25 2021

Strong and gusty northwest winds will gradually diminish late this afternoon and this evening as a surface ridge over the Northern Plains builds southward into MO, causing the surface pressure gradient to relax. The MVFR cloud ceilings will improve to the VFR category late this afternoon or early this evening, followed by a clearing sky tonight. Could not rule out patchy fog late tonight/early Tuesday morning, at least in the river valleys.

SPECIFICS FOR KSTL: Strong and gusty northwest winds will gradually diminish late this afternoon and this evening as a surface ridge over the Northern Plains builds southward into MO, causing the surface pressure gradient to relax. The MVFR cloud ceiling will improve to the VFR category early this evening, followed by a clearing sky late this evening and overnight.

GKS

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 mi20 minNW 910.00 miOvercast55°F44°F67%1015.8 hPa
St. Louis Lambert International Airport, MO15 mi23 minNW 13 G 2110.00 miOvercast55°F44°F67%1015.6 hPa

Link to 5 minute data for KSUS

Wind History from SUS (wind in knots)
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1 day agoE6E5E5E6E3E30E6E4E4E64E6E5E3E30E40S7S9
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2 days agoSW400000SW3N3000000E30E5E5SE30E4E4E3E3

Tide / Current Tables for
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Tide / Current Tables for
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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