Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Wright City, MO

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:21AMSunset 7:51PM Wednesday August 21, 2019 12:29 AM CDT (05:29 UTC) Moonrise 10:12PMMoonset 10:56AM Illumination 69% Phase: Waning Gibbous; Moon at 20 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 Wright City, MO
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location: 38.89, -91.04     debug


Area Discussion for - St. Louis, MO
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Fxus63 klsx 210447
afdlsx
area forecast discussion... Updated aviation
national weather service saint louis mo
1147 pm cdt Tue aug 20 2019

Update
Issued at 947 pm cdt Tue aug 20 2019
thunderstorm threat has abated for now, but look for limited
additional development to occur to our west after midnight with
some of this advecting into our area towards sunrise Wednesday and
into late Wednesday morning ahead of an approaching surface cold
front.

The cold front is expected to get more active as it moves through
the forecast area Wednesday afternoon and evening with likely pops
overspreading our region.

Heat could rear its head again on Wednesday, depending on how fast
storms develop, where they develop and how much cloud cover can
they generate. Wednesday morning looks more up in the air, which
is tending to support a greater heat threat especially for areas
south of interstate 70, where temperatures could slip above 90
with heat index values between 100 and 103. A slowdown of storm
development could allow several sites to reach 105 or higher,
similar to what happened today in portions of southeast mo and far
southern il, where 105 or higher heat index values were attained.

Otherwise, the waves of showers and storms forecast heading into
late Wednesday afternoon and continuing into Wednesday night and
Thursday looks on track with the thunder threat steadily pushing
more and more south with time. Some areas could receive decent
amounts of rainfall too but the signals are not strong enough yet
to be concerned about heavy rainfall which could cause flooding.

Tes

Short term (through late Wednesday night)
issued at 335 pm cdt Tue aug 20 2019
severe threat confined to crawford co. Over to st. Genevieve co and
south and is expected to be out of our area by 6 pm. There have
been several reports of wind damage with these storms as they
continue to flourish in 3500-4500 j kg air.

After storms dissipate, there is no expectation of redevelopment
overnight.

Cams are showing the potential for redeveloping tsra over nebraska
so have kept chance pops toward sunrise, especially our northern
areas: quincy hannibal to north of the st. Louis and columbia metro
areas.

Sally

Long term (Thursday through next Tuesday)
issued at 335 pm cdt Tue aug 20 2019
next focus will be from Wednesday afternoon into Thursday as a 500mb
low near the up of michigan pushes an attendant surface cold front
into the area, then the boundary stalls roughly along and just south
of i-70. To the south, a steady stream of gulf moisture results in
precipitable waters in the 1.5-2.5 range. Overnight on wed, flow
above the surface becomes unidirectional for a short time, all
pointing to efficient rain producing storms. With no real
significant upstream kicker and a slow-to-move-on high over the
southern conus, there will be several rounds of thunderstorms
expected with total QPF around an inch with some localized 2 inches.

By Friday afternoon, the lingering frontal boundary will push south
as a 500 mb ridge builds in and shoves the front to tennessee.

At this time, the weekend looks mostly dry but still a chance of
isolated thunderstorms. Next chance of precip will be early next
week Mon tues as another cold front passes through the area.

Sally

Aviation (for the 06z tafs through 06z Wednesday night)
issued at 1147 pm cdt Tue aug 20 2019
vfr conditions, dry weather, and light s-sw surface winds are
expected at the TAF sites through the next few hours. A cold
front to our northwest will make a push into the region beginning
around daybreak Wednesday and continue through Wednesday
afternoon, with several rounds of showers and storms developing
along it and affecting the TAF sites. Surface winds will veer nw
with frontal passage, but there is also some concern that this
frontal boundary will stall late Wednesday and into Wednesday
night, maintaining the rain threat well into Wednesday night.

Where the front should push the farthest south from, kuin, there
is increasing potential for a period of low clouds to intrude on
Wednesday morning and have added that to the taf.

Specifics for kstl:VFR, dry weather, and light S surface winds
until Wednesday morning when the first of several rounds of
showers and storms looks to affect the terminal. While there
should be an initial cold FROPA in the afternoon, a stalled front
near the terminal late in the day could result in a more variable
wind direction. The threat for showers and storms looks to
continue well into Wednesday night.

Tes

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. Louis, Spirit Of St. Louis Airport, MO27 mi35 minN 010.00 miFair71°F69°F94%1015 hPa

Link to 5 minute data for KSUS

Wind History from SUS (wind in knots)
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Last 24hrS4--------CalmCalm--S3CalmCalm--SW7W4NE10NE5NE10
G16
E8----SE4CalmS3Calm
1 day ago----Calm--Calm----CalmCalmCalmCalmW3--CalmCalmW6Calm--SW3SW5CalmCalmCalmSE4
2 days agoS4S6S7S6S3--CalmSW7SW9SW7----SW8W6N8CalmE7CalmCalmCalmSW5S4S3W3

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for St. Louis, MO (1,6,7,8)
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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.