Tuesday, August20, 2019 L-36.com


Marine Weather and Tides
Winchester, 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 6:19AMSunset 7:51PM Tuesday August 20, 2019 8:00 PM CDT (01:00 UTC) Moonrise 9:42PMMoonset 9:56AM Illumination 71% 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
    EDIT      (on/off)   Help


7 Day Forecast for Marine Location Near Winchester, MO
   Hourly   EDIT   Help
location: 38.58, -90.53     debug


Area Discussion for - St. Louis, MO
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 klsx 202351
afdlsx
area forecast discussion... Updated aviation
national weather service saint louis mo
651 pm cdt Tue aug 20 2019

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 00z tafs through 00z Wednesday evening)
issued at 650 pm cdt Tue aug 20 2019
vfr conditions, dry weather, and light s-sw surface winds are
expected at the TAF sites through much of tonight. If the
convective cirrus clouds clear out quickly this evening, this
could increase fog chances, but for now it looks to hold for
several hours tonight. 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 by midday, 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
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St. Louis, Spirit Of St. Louis Airport, MO8 mi67 minN 010.00 miOvercast76°F71°F85%1013.9 hPa
St. Louis Lambert International Airport, MO15 mi70 minSSE 510.00 miMostly Cloudy77°F66°F71%1013.8 hPa
St. Louis Downtown Airport, IL20 mi68 minN 010.00 miFair74°F69°F85%1014.3 hPa

Link to 5 minute data for KSUS

Wind History from SUS (wind in knots)
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
Last 24hrCalm4S4W3CalmCalmCalmCalmCalmCalmS3CalmCalmSW3SW7W4NE10NE5NE10
G16
E8S15
G22
CalmSE4Calm
1 day agoS3W3SW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW3W3CalmCalmW6CalmCalmSW3SW5CalmCalm
2 days agoCalmCalmS4S6S7S6S3S4CalmSW7SW9SW7SW6W5SW8W6N8CalmE7CalmCalmCalmSW5S4

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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 (21,6,7,8)
      (on/off)   Help

Ground Weather Radar Station St. Louis, MO
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.