Saturday, February23, 2019 L-36.com


Marine Weather and Tides
Shipman, IL

Version 3.4
What's New / NOTES
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 6:40AMSunset 5:47PM Saturday February 23, 2019 2:37 PM CST (20:37 UTC) Moonrise 10:43PMMoonset 9:23AM Illumination 80% Phase: Waning Gibbous; Moon at 19 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 Shipman, IL
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location: 39.18, -90     debug


Area Discussion for - St. Louis, MO
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Fxus63 klsx 231732
afdlsx
area forecast discussion... Updated aviation
national weather service saint louis mo
1132 am cst Sat feb 23 2019

Short term (through late Sunday afternoon)
issued at 504 am cst Sat feb 23 2019
main concerns in the short term are fog, severe weather, and wind.

Fog has developed early this morning across central missouri with
visibilities between 1 4-1 2sm at several obs sites. Have already
issued dense fog advisory through 9 am for several counties over the
western CWA and may need to expand or extend it depending on
observation trends over the next several hours.

Next,already have showers and isolated thunderstorms over central
and southeast missouri. These will continue to move northeast
during the morning hours in strong low level moisture convergence
underneath increasing mid level ascent ahead of the upper low seen
early this morning moving into the southern plains. The attendant
surface low will move across northeast missouri into great lakes
later today into tonight. As it does, a cold front will move
across the CWA this afternoon into early this evening. GFS nam
mass fields and cams reflectivity support that scattered
thunderstorms will move across southeast missouri into southwest
illinois ahead of the cold front. Mlcapes will be on the order of
500 j kg with 0-1km shear of around 40kts, so strong to severe
storms will be possible. Forecast soundings suggests that these
storms will be elevated, particularly west of the mississippi
river, however if these storms can become surface based they will
have some the potential to produce an isolated tornado given the
shear. These storms will move quickly east of the area by mid
evening.

Have expanded the wind advisory across the entire CWA based on
soundings. Winds will turn quickly out of the west and begin the
mix the tight gradient winds down with the cold air advection.

Forecast soundings across the area are showing 900mb winds between
45-50kts between 09-12z. This should allow wind gusts reach 45 mph
at the surface late tonight into early Sunday across the entire cwa.

Britt

Long term (Sunday night through Friday)
issued at 504 am cst Sat feb 23 2019
global models are still showing that the upper flow will be in quasi-
zonal flow through most of next week. There still looks like there
will be a shortwave trough move across the midwest midweek that
will be enough to bring a chance of rain snow Wednesday into
Thursday and a second, deeper trough that will bring another
chance of precipitation on Friday. As mentioned yesterday, the
main polar front will stay south of the CWA during much of the
week which will keep temperatures below normal. This is supported
by the GEFS 2m plumes and the 850mb temperatures.

Britt

Aviation (for the 18z tafs through 18z Sunday afternoon)
issued at 1125 am cst Sat feb 23 2019
multiple waves of rain showers, with isod to sct ts, will
continue to push NE through the region. The rain will end this
afternoon, with a somewhat brief period of clouds becoming bkn to
sct as a dry slot moves into the area. Expect low MVFR CIGS to
then move back into the region with winds becoming westerly. These
westerly winds will be quite strong with gusts to around 40 kts.

There is some indication that brief higher gusts, around 45 kts,
will be possible, but are expected to remain short lived and
mainly at the onset of higher winds. Clouds will clear out of the
area Sun morning.

Tilly

Lsx watches warnings advisories
Mo... Dense fog advisory until noon cst today for audrain mo-boone mo-
callaway mo-cole mo-crawford mo-franklin mo-gasconade mo-
iron mo-madison mo-marion mo-moniteau mo-monroe mo-
montgomery mo-osage mo-pike mo-ralls mo-reynolds mo-saint
francois mo-shelby mo-washington mo.

Wind advisory from midnight tonight to noon cst Sunday for
audrain mo-boone mo-callaway mo-cole mo-crawford mo-
franklin mo-gasconade mo-iron mo-jefferson mo-madison mo-
moniteau mo-montgomery mo-osage mo-reynolds mo-saint
charles mo-saint francois mo-saint louis city mo-saint
louis mo-sainte genevieve mo-warren mo-washington mo.

Wind advisory from midnight tonight to 6 pm cst Sunday for knox
mo-lewis mo-lincoln mo-marion mo-monroe mo-pike mo-ralls mo-
shelby mo.

Il... Wind advisory from midnight tonight to noon cst Sunday for
clinton il-madison il-monroe il-randolph il-saint clair il-
washington il.

Wind advisory from midnight tonight to 6 pm cst Sunday for adams
il-bond il-brown il-calhoun il-fayette il-greene il-jersey
il-macoupin il-marion il-montgomery il-pike il.

Wfo lsx


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Litchfield Municipal Airport, IL17 mi43 minSE 94.00 miLight Rain48°F47°F99%1005.8 hPa
St. Louis Regional Airport, IL19 mi48 minSE 101.00 miLight Rain Fog/Mist48°F48°F100%1005.4 hPa

Wind History from 3LF (wind in knots)
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Last 24hrE5E8E5E9E7E6E7E6E6E6E6E9E9
G14
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G14
SE12
G16
SE11SE9SE9
G14
SE10SE12SE10SE10SE12SE11
1 day agoN4NW3CalmN5N5N4N7N6NE4NE5E4NE4NE4NE5NE8NE6NE7NE8NE9NE10NE9E9E9E12
2 days agoS11S10S10W18
G23
W13
G17
SW9SW11SW8SW11SW7SW7W6W9W5W6W6W5W5W6W5S4SW4W7W4

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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wmap_A
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 (15,3,4,5)
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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.