Thursday, August24, 2017 L-36.com


Marine Weather and Tides
Wright City, MO

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:24AMSunset 7:47PM Wednesday August 23, 2017 11:45 PM CDT (04:45 UTC) Moonrise 7:21AMMoonset 8:09PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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 240430
afdlsx
area forecast discussion... Updated aviation
national weather service saint louis mo
1130 pm cdt Wed aug 23 2017

Short term (through late Thursday afternoon)
issued at 310 pm cdt Wed aug 23 2017
the synoptic pattern early this afternoon features a trough across
the northeastern conus, which will place the midwest within cyclonic
northwesterly flow through the period.

Pretty spectacular weather is on tap through tomorrow as surface
high pressure currently over southwest ia northwest mo continues to
influence our sensible weather. This high will shift east across
the region tonight, allowing for calm winds and clear skies. With
dewpoints having mixed out into the low 50s this afternoon,
expect a cool night. Went below guidance for temps tonight which
places them in the mid to upper 50s. Would not be surprised to see
some of the cooler valley locations dip into the low 50s or even
upper 40s. Given these cool temperatures over relatively warm
river waters, can't rule out some steam fog developing early
Thursday morning.

Thursday looks like a carbon copy of today. Expect mostly sunny
skies (perhaps a bit more high-level cloudiness over northern
mo western il) with temperatures in the upper 70s to low 80s.

Kd

Long term (Thursday night through next Wednesday)
issued at 310 pm cdt Wed aug 23 2017
the synoptic pattern at the start of the long term period will
feature continued northwesterly flow aloft, a pattern which will
shift to more northerly through the period as a PV anomaly digs
southeast out of central canada. This regime will make for continued
seasonably cool conditions along with increasing shower storm
chances this weekend into early next week.

Friday and Saturday will continue the stretch of very pleasant late
august weather as surface high pressure over the great lakes
continues to influence our sensible weather. Highs each day will
continue to run below normal, with highs in the upper 70s low 80s.

Forecast confidence begins to decline Saturday night into early next
week. There are a couple factors at play leading to this lowered
confidence: (1) a PV anomaly and associated area of low pressure
diving southeast and (2) the remnants of what is expected to be
hurricane harvey in the western gulf of mexico. In general,
guidance has sped up the arrival of PV anomaly and associated
surface cold front. The gem still is a quick outlier, thus a blend
of the ECMWF gfs GEFS is preferred. This brings a threat of
showers storms to the area as early as Saturday night which looks to
last into early next week as the PV anomaly helps to close off an
upper-level low near the region.

Just how quickly that upper low pulls out will likely be influenced
by the remnants of hurricane harvey. The consensus is for the upper-
level low to be shunted to the east by the middle of next week as
harvey lifts northeast into the tn valley. However, some outlying
guidance wants to lift harvey more due north which could would then
affect portions of the area mid-late next week. Still plenty of time
to figure out the details, but thinking is that much of the moisture
associated with harvey will remain southeast of the region.

Kd

Aviation (for the 06z tafs through 06z Thursday night)
issued at 1128 pm cdt Wed aug 23 2017
surface ridge to remain over region through forecast period, so
vfr conditions with light and variable winds. Still can't rule out
some river fog towards daybreak, but confidence is low so kept
mention out for now.

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. Louis, Spirit Of St. Louis Airport, MO27 mi52 minN 010.00 miFair61°F60°F97%1017.4 hPa

Wind History from SUS (wind in knots)
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Last 24hrCalmSW3SW3SW3CalmSW3CalmSW3SW3Calm3N5N73NW9N7N4N54N4N4CalmCalmCalm
1 day agoS10S8SW12
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NE4N4W3S5CalmS4NW9NW10NW7W12W7
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NW10NW12NW8NW9N4CalmCalmCalm
2 days agoS3CalmCalmCalmNW3CalmCalmW3W4SW9W9W7SW7SW5W3W7SW7W7SW4E3CalmCalmCalmS5

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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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for St. Louis, MO (0,6,7,8)
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Ground Weather Radar Station St. Louis, MO
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weather_mapweather_map weather_map

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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.