Marine Weather and Tides
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.
|Sunrise 6:45AM||Sunset 4:45PM||Sunday November 18, 2018 11:19 AM CST (17:19 UTC)||Moonrise 3:33PM||Moonset 2:39AM||Illumination 81%|
7 Day Forecast for Marine Location Near Bingham, ILHourly EDIT Help
Area Discussion for - St. Louis, MO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus63 klsx 181151|
area forecast discussion... Updated aviation
national weather service saint louis mo
551 am cst Sun nov 18 2018
Short term (through late tonight)
issued at 309 am cst Sun nov 18 2018
band of snow has made very little progress to the south into
northern portions of forecast area as of 09z. Models continue to
indicate that frontogenetical forcing will weaken by 12z Sunday,
so precipitation chances will taper off through the morning hours
with just isolated activity expected. As for temperatures,
another below normal day is expected with lingering cloud cover
and north winds, so highs will only be in the mid 30s to low 40s.
By this afternoon, another wave of energy will lift northeastward
through southern portions of forecast area with increasing
chances of light rain a few snowflakes mixed in at times on the
northern fringes of the rain shield.
Rain will taper off by midnight as the shortwave exits the region,
then a surface ridge will build in with winds becoming light and
variable. Will see partial clearing across northern portions of
the forecast area, while cloudy skies will linger to the south.
Therefore expect low temperatures will range from the low 20s
across northeast missouri and west central illinois to the mid 30s
in southeast missouri.
Long term (Monday through Saturday)
issued at 309 am cst Sun nov 18 2018
surface low pressure should be over tennessee by 12z Monday
morning as a shortwave aloft dives into the mississippi valley.
The shortwave will shuffle the surface low off to the east on
Monday... Bringing an end to any lingering precipitation by 12z Monday
morning. Models have come into good agreement with the shortwave
amplifying the broader longwave trof over the eastern united
states. This amplified pattern will drag a canadian high pressure
system through the eastern plains and the midwest through the
great plains into the mid and lower mississippi valley Monday
night into Tuesday. This high will bring our forecast area the
last shot of below normal temperatures for the week on Monday and
Tuesday. Guidance temperatures with lows in the 20s and highs in
the 40s both Monday and Tuesday look reasonable.
A progressive, high amplitude pattern sets up for Wednesday through
Friday. An upper level ridge builds over the central u.S.
Wednesday as the longwave trof shifts off the east coast.
Southerly flow on the western side of the surface ridge combined
with the upper ridge should bring warmer temperatures back to the
mid mississippi valley on Wednesday and Thursday. Latest ensemble
guidance is showing highs rising into the 50s on Wednesday and
Thursday, and lows coming up from the low 30s Wednesday night to|
the mid and upper 30s on Thursday night.
The next chance for precipitation for the area will come on
Friday as a progressive shortwave moves from the great plains into
the mississippi valley. Medium range guidance isn't in great
agreement on how to handle this wave. GFS and ECMWF are in decent
sync until 12z Friday morning when the ECMWF closes off the trof
aloft over the central plains which slows the eastward progress
significantly. The low meanders eastward Friday and Saturday and
is centered over the illinois kentucky border by 00z Sunday. This
would keep warmer temperatures and mostly dry weather over
missouri and illinois Friday, and then produce a wetter and cooler
Saturday. In contrast, the open wave of the GFS moves from the
pains to the mississippi river by 00z Saturday and then into the
ohio valley by 12z Saturday. This yields a wet Friday and a dry
Saturday. The last few runs of the ECMWF have kept the wave open
as the GFS does, and the GFS has been consistent with an open
wave. Am therefore leaning toward the faster solution of the gfs
at this time and going with a chance of rain Friday and dry on
Aviation (for the 12z tafs through 12z Monday morning)
issued at 550 am cst Sun nov 18 2018
ifr flight conditions will improve for kuin by this afternoon and
for kcou by late this evening. Otherwise, st. Louis metro area
will remain ifr through most of forecast period with brief periods of
MVFR flight conditions late this afternoon. North winds will
persist before becoming light and variable by this evening as
surface ridge builds in.
Specifics for kstl:
ifr flight conditions as well as patchy drizzle will linger over
the st. Louis metro area through 16z, then will see ceilings
slowly improve to MVFR by late this afternoon with main area of
rain south of metro area. With loss of daytime heating, ceilings
will lower back down to ifr for remainder of forecast period.
North winds will become light and variable by 06z Monday.
Preliminary point temps pops
Saint louis 38 32 45 29 20 20 5 5
quincy 36 24 43 25 20 0 5 5
columbia 37 27 46 25 20 5 0 0
jefferson city 38 28 47 26 20 10 0 0
salem 42 32 43 29 30 40 5 5
farmington 39 33 46 28 60 60 5 0
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
|Litchfield Municipal Airport, IL||27 mi||24 min||N 9||2.50 mi||Fog/Mist||35°F||34°F||99%||1025.1 hPa|
Wind History from 3LF (wind in knots)
|1 day ago||NW||NW||NW||Calm||N||N||Calm||E||SE||SE||SE||SE||SE||SE||E||E||E||E||E||E||SE||SE||SE|
|2 days ago||NW||NW||NW||W||W||SW||SW||SW||S||S||S||S||S||S||S||S||SW||SW||W||W||W||W||W||NW |
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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for St. Louis, MO (12,3,4,5)(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.