Thursday, March21, 2019 L-36.com


Marine Weather and Tides
Winchester, MO

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 7:02AMSunset 7:16PM Thursday March 21, 2019 6:28 AM CDT (11:28 UTC) Moonrise 7:12PMMoonset 6:45AM Illumination 100% Phase: Full Moon; Moon at 15 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 Winchester, MO
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location: 38.58, -90.53     debug


Area Discussion for - St. Louis, MO
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Fxus63 klsx 210820
afdlsx
area forecast discussion
national weather service saint louis mo
320 am cdt Thu mar 21 2019

Short term (through Friday)
issued at 316 am cdt Thu mar 21 2019
the cold front continues to advance southward across the area early
this morning in response to the upper trof digging southeastward
from the western great lakes into the ohio valley. The front was bi-
secting the st. Louis metro at 08z and should clear the CWA by 12z.

Northwest winds and weak CAA were occurring in the wake of the
front. There was also a good deal of stratus, but the coverage was
not very uniform to our north and it also lagged the front by
anywhere from 50-100 miles. Based on the current goes-16 nighttime
microphysics imagery, low level rh progs from the rap, and the
presence of deep layer north-northwest flow, the greatest coverage
of clouds this morning should be along and east of the ms river,
with more scattered coverage further west. Clouds should diminish in
coverage this afternoon and gradually shunt to the east.

Temperatures today will remain below average.

Weather conditions continue to look tranquil tonight with clear
skies. Surface high pressure will remain to our west and surface
winds back a bit this evening giving us some weak waa. However
another cold front will drop southward into the area overnight and
clear the CWA by late morning on Friday, with high pressure settling
into the area by early Friday evening. Most of the cooling with this
later front is across il and it doesn't appear to be all that great.

Temperatures will be closer to seasonable norms with highs a bit
below average from the ms river east, and closer to average from
southeast into central mo.

Glass

Long term (Friday night through Wednesday)
issued at 316 am cdt Thu mar 21 2019
surface ridge along with a narrow upper level ridge, will continue
to build in over the region Friday night through Saturday. So dry
and cooler conditions expected with lows in the upper 20s to mid 30s
Friday night and highs on Saturday in the 50s.

By Saturday night, ridging will slowly slide off to the east while a
closed upper level low over the front range becomes negatively
tilted and lifts northeastward towards iowa. So will see southerly
flow return to the region once again advecting in decent low level
moisture. First in a series of shortwaves will slide through the
forecast area Saturday night with scattered showers developing.

By Sunday morning, as surface low associated with system slides into
northwestern mo, will see dewpoints rising into the 40s to near 50
degrees by the afternoon with surface based capes around 500 j kg.

This combined with a fairly vigorous shortwave will allow for
increasing chances of showers, as well as scattered thunderstorms,
in the warm sector ahead of associated cold front, especially Sunday
afternoon through evening.

Cold front will exit region by Monday morning, though could still
see some lingering post frontal shower activity through Monday
evening, before coming to an end.

Highs on Sunday will be in the upper 50s to low 60s, then cool off a
bit below normal for the first part of the work week, with highs in
the upper 40s to 50s Monday and Tuesday. By Wednesday, highs will be
back up near normal, in the upper 50s to low 60s.

Byrd

Aviation (for the 06z tafs through 06z Thursday night)
issued at 1046 pm cdt Wed mar 20 2019
a cold front extending from a surface low over northeastern il
southwest through uin will move southeastward through cou around
06z and through the st. Louis metro area around 07-08z Thursday.

Post frontal low level clouds will move through the TAF sites late
tonight and Thursday morning. The cloud ceiling may briefly drop
into the MVFR category. Southwest surface winds late this evening
will veer around to a northwest direction after FROPA and increase
in strength, possibly becoming gusty Thursday morning. The sky
will clear out Thursday afternoon as a surface ridge moves
southeastward into western mo.

Specifics for kstl: a cold front extending from a surface low
over northeastern il southwest through uin will move southeastward
through stl around 07-08z Thursday. Post frontal low level clouds
will move through stl late tonight and Thursday morning. The
cloud ceiling may briefly drop into the MVFR category. Southwest
surface winds late this evening will veer around to a northwest
direction after FROPA and increase in strength, possibly becoming
gusty Thursday morning. The sky will clear out Thursday afternoon
as a surface ridge moves southeastward into western mo.

Gks

Preliminary point temps pops
Saint louis 55 37 55 33 0 0 0 0
quincy 53 32 51 31 0 0 0 0
columbia 54 34 57 33 0 0 0 0
jefferson city 55 34 58 33 0 0 0 0
salem 50 35 53 30 0 0 0 0
farmington 54 36 59 32 0 0 0 0

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, MO8 mi35 minNW 610.00 miFair40°F32°F73%1017.5 hPa
St. Louis Lambert International Airport, MO15 mi38 minNNW 1110.00 miPartly Cloudy40°F32°F73%1017.1 hPa
St. Louis Downtown Airport, IL20 mi36 minNNW 1310.00 miFair41°F30°F67%1016.8 hPa

Wind History from SUS (wind in knots)
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Last 24hrCalmS3SW6SW13
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W8W6SW7S5W5SW6SW5SW6SW6W6W6NW8NW6NW6
1 day agoCalmCalmCalm4SE12S7SW5S65SE533E5E4E53S5S7S8S14
G21
5S9S33
2 days agoCalmCalmNE6E3N4NW5N6Calm--NE6
G17
E6E7E5SE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

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.
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Wind Forecast for St. Louis, MO (7,2,3,4)
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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.