Marine Weather and Tides
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 6:42AM||Sunset 7:28PM||Thursday April 2, 2020 11:29 PM CDT (04:29 UTC)||Moonrise 12:10PM||Moonset 2:22AM||Illumination 76%|
7 Day Forecast for Marine Location Near Winchester, MOHourly EDIT Help
Area Discussion for - St. Louis, MO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
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.
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.
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.
LSX WATCHES/WARNINGS/ADVISORIES. MO . None. IL . None.
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|St. Louis, Spirit Of St. Louis Airport, MO||8 mi||35 min||ESE 4||10.00 mi||Light Rain||61°F||45°F||56%||1016.2 hPa|
|St. Louis Lambert International Airport, MO||15 mi||3.6 hrs||SE 15||10.00 mi||Overcast||66°F||41°F||40%||1015.4 hPa|
|St. Louis Downtown Airport, IL||20 mi||36 min||SSE 7||10.00 mi||Fair||59°F||44°F||58%||1016.1 hPa|
Link to 5 minute data for KSUS
Wind History from SUS (wind in knots)
|1 day ago||E||E||E||Calm||Calm||Calm||Calm||Calm||Calm||E||E||E||E||SE||SE||E||E||E||E|
|2 days ago||NW||Calm||Calm||Calm||Calm||E||NE||Calm||Calm||NE||E||NE||W||N|
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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)(on/off)  Help
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