Thursday, July19, 2018 L-36.com


Marine Weather and Tides
Kane, IL

Version 3.4
What's New / NOTES
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 5:49AMSunset 8:24PM Thursday July 19, 2018 1:05 AM CDT (06:05 UTC) Moonrise 12:14PMMoonset 11:54PM Illumination 37% Phase: Waxing Crescent; Moon at 6 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 Kane, IL
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location: 39.18, -90.42     debug


Area Discussion for - St. Louis, MO
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Fxus63 klsx 190507
afdlsx
area forecast discussion... Updated aviation
national weather service saint louis mo
1207 am cdt Thu jul 19 2018

Short term (through late Thursday afternoon)
issued at 400 pm cdt Wed jul 18 2018
main concerns over the next 36 hours will be centered around
thunderstorm potential tonight into Thursday morning and again
Thursday afternoon.

Surface high pressure over the great lakes continues to pump drier
air into the eastern half of the forecast area, which has vastly
limited any eastward progress in shower thunderstorm activity over
central missouri. Clouds and early morning showers have tamed
temperatures over this region with low to mid-80s near columbia
and jefferson city, climbing to the mid and upper-80s to the east.

Any new convection has largely been over southwest missouri and
arkansas, where the environment is uncontaminated from early
morning precip and remains unstable.

The main focus of the aforementioned activity has been along a
weak boundary, which extends well south of an upper level low over
the northern plains. As the surface high over the great lakes
continues to move east, this boundary will make some eastward
progress, as well. An upper shortwave is projected to pass through
the northwest flow and south of the parent low into northeast
missouri and west-central illinois late tonight into Thursday
morning. This will be the first round of shower and thunderstorms
to impact the region, running from central missouri around 05z-
06z, to quincy and st. Louis areas around 10z-12z. Elevated
instability could be enough to result in a few strong isolated
severe storms with hail and localized damaging wind gusts being
the main concern. Convection becomes a bit more isolated scattered
along the boundary south of st. Louis, being further departed
from the shortwave feature.

The bigger question will be in the afternoon. Yet another wave
drops down the western through the northwest flow. The southwest
ridge begins to slowly build east, while the upper trough digs
into the midwest. The shortwave develops at the nose of a
strengthening jet feature with the potential for storm development
over the plains to push into missouri through the morning and
afternoon. Additional afternoon thunderstorm potential resulting
from this wave will likely be dependent on morning convection.

Should the atmosphere be turned over and stabilize in the morning,
afternoon potential could be tamed. Otherwise, any recovery or
increased instability may provide another round of strong to
severe storms Thursday afternoon and evening with the potential
for large hail and damaging winds. While it is not yet a slam
dunk, overall dynamics are trending in a direction that would
support severe storm from Thursday afternoon and evening from
central to eastern missouri.

Maples

Long term (Thursday night through next Wednesday)
issued at 400 pm cdt Wed jul 18 2018
thunderstorms look to exit the area late Thursday evening with
quiet conditions expected Thursday night. This does not last very
long with additional thunderstorms develop Friday.

The trough conditions to dig south, while the upper ridge
strengthens to the southwest. The st. Louis area lies just ahead
of a jet feature as air destabilizes over portions of illinois
Friday afternoon. Additional storms will fire Friday afternoon
with greatest potential for strong to severe storms along and east
of the mississippi river with some of the better jet and shear
dynamics we have seen in some time. This will be something to
watch and the support is there for a relatively active Friday
afternoon evening.

Much of the remainder of the period is quiet. Despite being quiet,
the pattern is complex. A large ridge over the northern atlantic
strengthens and begins to build south and west over the course of
the week. This effectively stalls eastward motion of the upper
low, causing is to meander over the great lakes and eventually
retrograde south and west. The minor variance in the long range
could make a difference with high temperatures over the course of
the week with most of the active weather focused to the east and
southeast over the ohio and tennessee valleys. General consensus
is for slight below to near normal temperatures (mid-80s to near
90 degrees) through the end of the period.

Maples

Aviation (for the 06z tafs through 06z Thursday night)
issued at 1201 am cdt Thu jul 19 2018
vfr conditions through forecast period. As for pcpn chances,
scattered showers and storms are developing over central mo as of
05z. So kept vicinity TS mention through mid afternoon for kuin
and kcou. As for stl metro area, still looks like storms possible
after 18z through 00z Friday. As for winds, southeast winds to
veer to the south as warm front lifts north through forecast area.

Specifics for kstl:
vfr conditions through forecast period. As for pcpn chances for
stl metro area, still looks like storms possible after 18z through
00z Friday. As for winds, southeast winds to veer to the south as
warm front lifts north through forecast area.

Byrd

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. Charles, St. Charles County Smartt Airport, MO17 mi72 minESE 510.00 miMostly Cloudy73°F64°F74%1015.4 hPa

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Last 24hrCalmN3CalmNE4CalmE4E9E10E8E9SE11SE8E10E12
G16
E13E11E9E9E6E5E6E4E5E5
1 day agoN6NE9CalmN3NE4CalmNE4N7NE7NE5NE5NE7NE5NE6E5NE8NE8NE8NE6NE5NE4NE3CalmCalm
2 days agoE3CalmCalmCalmCalmCalmCalmCalmNW34W5NW8--N7NW6N8N9--N5N4CalmCalmCalmCalm

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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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 (2,6,7,8)
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Ground Weather Radar Station St. Louis, MO
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Disclaimer:
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.