Marine Weather and Tides
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 7:07AM||Sunset 7:15PM||Sunday March 18, 2018 2:47 AM CDT (07:47 UTC)||Moonrise 7:04AM||Moonset 7:34PM||Illumination 2%|
EDIT (on/off)  Help
7 Day Forecast for Marine Location Near Wright City, MOHourly EDIT Help
Area Discussion for - St. Louis, MO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus63 klsx 180458|
area forecast discussion... Updated aviation
national weather service saint louis mo
1158 pm cdt Sat mar 17 2018
Short term (through late Sunday afternoon)
issued at 415 pm cdt Sat mar 17 2018
low pressure moving into the tennessee valley will continue to drag
stratus southeast in its wake tonight. Meanwhile, guidance is
showing ridging building aloft and forecast soundings indicate a
strong subsidence inversion due to this ridge. This indicates a
strongly stratified lower atmosphere. This stratification will
likely allow little chance for the low level stratus deck to mix
out, especially given that our forecast area will remain in weak
cold advection at least into early Sunday morning. Think the
blanket of clouds will limit cooling somewhat tonight... Although the
northwest flow will make it a little chillier than this morning.
Stuck very close to the model consensus for lows for tonight.
However, with the thinking that those clouds will stick around for
much of the morning and perhaps into early afternoon, think the
colder side of guidance in the low to mid 50s for highs Sunday is
Long term (Sunday night through next Saturday)
issued at 415 pm cdt Sat mar 17 2018
weather for the remainder of the forecast will be dominated by two
systems. The first is a shortwave that will eject eastward from the
large upper trof currently over the western u.S. Models are showing
strong lee-side cyclogenesis late Sunday afternoon and Sunday night
as the wave moves off the rockies into the plains. The surface
system is currently forecast to move through southern kansas Sunday
night and east along the missouri arkansas border on Monday. All
guidance members show moderate to strong low level moisture
convergence ahead of the low along and south of i-70, wrapping back
around the low Monday afternoon into the early evening. Likely to
categorical pops look appropriate fading to chance up across
northeast missouri and west central illinois. Rain should end
Monday night as the system exits to the east.|
Northwest flow aloft will persist over the mississippi valley for
the remainder of the week. A couple of weak shortwaves move quickly
across the area in the northwest flow, which could produce light
rain first on Tuesday night and again on Thursday night into Friday.
Medium range guidance is disagreeing on timing and position of the
second strong system to affect the midwest next weekend. Current
thinking is that showers and thunderstorms will develop ahead of the
low either Friday or Friday night, but the timing differences
between the ec and GFS make this a low confidence forecast.
Aviation (for the 06z tafs through 06z Sunday night)
issued at 1152 pm cdt Sat mar 17 2018
still believe clouds will largely remain in place with CIGS in the
low MVFR cat. While cou is currently in the higher MVFR, lower
cigs may be moving south twd the terminal. Uin is on the edge of
the cloud deck and may actually goVFR. However, believe the swwd
push will slow before clouds pivot and actually move back east.
That said, if clouds to clear out of uin, fog is expected to
develop, although, do not currently expect visbys would drop below
Specifics for kstl ksus kcps: expect low MVFR CIGS to remain in
place thru Sun morning. CIGS will improve during the afternoon
hours. Conditions may actually improve toVFR during the late
afternoon hours. Expect lower CIGS to move back into the area late
in the period with shra beginning around 09z.
Lsx watches warnings advisories
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
|St. Louis, Spirit Of St. Louis Airport, MO||27 mi||54 min||NNE 5||10.00 mi||Overcast||41°F||36°F||82%||1018.5 hPa|
Wind History from SUS (wind in knots)
|1 day ago||E||E||E||E|
|2 days ago||SW||SW||SW||SW||SW||N|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help
EDIT (on/off)  Help
Weather Map and Satellite Images(on/off)  HelpWeather Map
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.
target = "new">Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for St. Louis, MO (3,6,7,8)(on/off)  Help
Ad by Google
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.