Marine Weather and Tides
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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.
|Sunrise 5:30AM||Sunset 8:23PM||Sunday June 17, 2018 11:12 PM CDT (04:12 UTC)||Moonrise 9:50AM||Moonset 12:00AM||Illumination 22%|
EDIT (on/off)  Help
7 Day Forecast for Marine Location Near Huey, ILHourly EDIT Help
Area Discussion for - St. Louis, MO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus63 klsx 172353|
area forecast discussion... Updated aviation
national weather service saint louis mo
653 pm cdt Sun jun 17 2018
Short term (through late Monday afternoon)
issued at 323 pm cdt Sun jun 17 2018
a few isolated showers and thunderstorms are expected to quickly
wane early this evening with loss of instability. Rest of the night
should be very much like that of last night with very mild
conditions under a mostly clear sky expected. Low temperatures are
forecast to be in the mid 70s to near 80 degrees tonight,
threatening record high minimums for the date.
main story will continue to be very hot and humid weather conditions
as they are expected to last at least through the day on Monday.
Going heat headlines still look good for Monday as combination of
high temperatures in the mid 90s along with dewpoints mainly in the
low 70s creates peak head index values of 100-105f for most
Dry conditions are favored on Monday as mid upper level ridge
continues to dominate the mid-mississippi valley. What is different
on Monday than that of the past couple of days is some more capping
aloft between 700 and 800 hpa. The thought is that the introduction
of this weak capping inversion should prevent the formation of even
isolated diurnal shower thunderstorm activity.
Long term (Monday night through next Sunday)
issued at 323 pm cdt Sun jun 17 2018
(Monday night - next Sunday)
mid upper level ridge axis which has been the dominant weather
feature the past few days will begin to slwoly break down early this
upcoming week. A cold front looks to come down southward into ia il
on Monday night as a sfc low transverse southeastern canada. This
frontal boundary will be the main focus for convection through much
of the remainder of the forecast period. Latitudinal postion of this
front looks like it will be highly tied antecedant thunderstorm
activity. Two weak surface lows are expected to develop across the
south-central plains and move the front northward as a warm front
but ongoing convection will try to keep it at bay if not push the
boundary further to the south. Active weather with rounds of showers
and thunderstorms is becoming increasingly likely in the Tuesday
night through Saturday time frame. Latest nwp guidance suggests
front may (for at least a brief time) clear the CWA to the south
sometime next weekend as a surface low moves through the great lakes.
Temperatures on Tuesday will start off well above normal and quite
humid, but still a lot of uncertainty with respect to cloud cover
and potential for thunderstorms. For these reasons, continued to
hold off on the extension of any heat headlines, but there still is
a possibility that headlines will be needed one last day on Tuesday.
High temperatures should cool off back to near normal for Wednesday
through Saturday due to the front wavering nearby bringing copious
amounts of cloud cover and chances for thunderstorms. Nighttime lows
should be still on the mild side however for these same reasons.
Aviation (for the 00z tafs through 00z Monday evening)
issued at 642 pm cdt Sun jun 17 2018
vfr flight conditions are expected at the terminals through the
forecast period. Diurnal CU has already begun to dissipate across
the area and no diurnally driven isolated showers thunderstorms
remain. This dissipating trend will continue and only high clouds
are expected after sunset. Much like the last few days, scattered
diurnal CU will develop between 15-17z on Monday. South-southwest
winds generally 8-10 kts will prevail after 14-15z on Monday.
Specifics for kstl:
vfr flight conditions are expected through the forecast period.
Diurnal CU has already begun to dissipate across the area and this
dissipating trend will continue and only high clouds are expected
after sunset. Much like the last few days, scattered diurnal cu
will develop between 15-17z on Monday. Southwest winds generally
8-9 kts will develop by mid-morning on Monday, backing slightly by
Record highs and warmest lows
stl 100 (1953) 79 (2009)
cou 100 (1953) 75 (2014)
uin 99 (1913) 77 (1944)
Lsx watches warnings advisories
Mo... Heat advisory until 8 pm cdt Monday for audrain mo-boone mo-
callaway mo-cole mo-crawford mo-franklin mo-gasconade mo-
iron mo-knox mo-lewis mo-lincoln mo-madison mo-marion mo-
moniteau mo-monroe mo-montgomery mo-osage mo-pike mo-ralls
mo-reynolds mo-saint francois mo-sainte genevieve mo-shelby
mo-warren mo-washington mo.
Excessive heat warning until 8 pm cdt Monday for jefferson mo-
saint charles mo-saint louis city mo-saint louis mo.
Il... Heat advisory until 8 pm cdt Monday for adams il-bond il-brown
il-calhoun il-clinton il-fayette il-greene il-jersey il-
macoupin il-marion il-montgomery il-pike il-randolph il-
Excessive heat warning until 8 pm cdt Monday for madison il-
monroe il-saint clair il.
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
|Centralia Municipal Airport, IL||14 mi||17 min||S 7||10.00 mi||Fair||82°F||73°F||77%||1017.3 hPa|
|Salem, Salem-Leckrone Airport, IL||18 mi||17 min||S 7||10.00 mi||Fair||83°F||72°F||71%||1017.6 hPa|
Wind History from ENL (wind in knots)
|1 day ago||S||Calm||Calm||Calm||Calm||Calm||S||SE||SE||S||SW||S||S||S||S||S||S||S||S||S||S||S||SE||S|
|2 days ago||Calm||S||Calm||SE||E||E||Calm||S||Calm||E||E||SE||SE||S||S||SE||SE||SE||SE||SE||S||S||SE||SE |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help
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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 (0,6,7,8)(on/off)  Help
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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.