Wednesday, February20, 2019 L-36.com


Marine Weather and Tides
Cuba, 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 6:49AMSunset 5:52PM Wednesday February 20, 2019 4:12 PM CST (22:12 UTC) Moonrise 7:18PMMoonset 7:44AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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 Cuba, MO
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location: 38.09, -91.42     debug


Area Discussion for - St. Louis, MO
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Fxus63 klsx 202107
afdlsx
area forecast discussion
national weather service saint louis mo
307 pm cst Wed feb 20 2019

Short term (through late Thursday afternoon)
issued at 304 pm cst Wed feb 20 2019
area remains under SW flow aloft through thurs with some weak
ridging aloft tomorrow. At the surface, a weak ridge will build into
the area tonight, with the axis lifting through the region thurs.

Low clouds remain in place this afternoon, other than a few holes in
the clouds that has allowed a brief period of insolation. Expect low
clouds to clear out of the area early this evening. However, model
solns continue to suggest high clouds moving back into the region
this evening and becoming more widespread and thicker late tonight
into thurs. Believe models also continue to hold on to too much snow
cover today, with this lingering into tonight. Have therefore
trended toward warmer guidance tonight.

As the surface ridge settles over the area tonight, expect winds to
become calm. With dewpoints above freezing, would expect any snow to
continue to melt this evening, adding to the low level moisture.

Currently, the best conditions appear to be across the southern half
or so of the cwa. However, if northern portions can remain free of
clouds longer, some fog may develop here as well. While not a great
setup, have mention of patchy fog for these areas late tonight into
thurs morning.

For Thursday, believe many of the model 2m temps are again too cold
due to the snow cover mentioned above. MOS is also in good agreement
across the region for thurs. Regardless, with the ridge axis lifting
north of the area, temps should rebound. Have therefore trended just
below the MOS guidance for highs on thurs despite not being a great
warming setup.

Bsh

Long term (Thursday night through next Wednesday)
issued at 304 pm cst Wed feb 20 2019
upper level flow will remain out of the southwest from Thursday
night until a potent shortwave pushes through the region on
Saturday. The upper level flow will slide high pressure to our east
on Friday morning, though a lingering baroclinic zone across the mid-
south will keep the high north of the ohio river valley. This high
position will keep our surface winds out of the east through the day
on Friday, though winds are expected to quickly veer with height.

South to southwesterly low level flow will begin to advect warm,
moist air into the region on Friday. This lift and moisture will
result in mostly clouds skies across the region and gradually
increasing rain chances across southern mo and il through the day.

Despite the WAA just above the surface, cloudy skies and easterly
surface winds will conspire to keep high temperatures at or just
below tomorrow's expected highs.

The southerly low level flow will persist into Saturday ahead of the
previously mentioned shortwave. This impulse is expected to result
in rapid cyclogenesis across the southern plains before the low
pushes through NW mo and into the great lakes by Saturday evening.

With jet level winds approaching 140 kts and the low level jet
topping 50 kts by Saturday afternoon, this extremely dynamic system
has the potential to result in strong to severe thunderstorms across
the mid-mississippi valley.

However, all the moisture streaming in ahead of the low could keep
skies mostly cloudy through the day on Saturday, limiting
instability. Additionally, the previously mentioned baroclinic zone
to our SE will likely limit surface based instability in our region
and serve as a focus for the more significant, surface based storms.

All that said, the current consensus low track should allow at least
some elevated instability to bleed into the region, which coupled
with the impressive dynamics, may give us our first severe weather
event of the year. This thinking is backed up by the cips severe
probability guidance, which has the entire CWA within a 15% contour
and a 30% bullseye over southern il.

Precipitation should quickly clear out of the area on Saturday
evening as a robust dry slot punches into the region, but the
potentially hazardous weather will not end there. The strong
gradient flow will result in very gusty winds beginning Saturday
evening before topping out near 35 kts early Sunday morning. Winds
will then gradually diminish through the day on Sunday, but remain
between 25 and 35 kts through noon. Those gusty post-frontal nw
winds will drop Sunday's high 10-15 degrees compared to Saturday
despite mostly sunny skies.

Zonal upper level flow will then prevail through the first half of
next week with high pressure dominating the lower levels. Winds will
remain out of the north through Monday which will result in a very
cold start to the week with lows on Monday morning in the teens and
20s. By Monday evening, winds will swing back around to the south
and we'll briefly warm up to near normal on Tuesday. By Wednesday, a
shortwave is progged to push through the midwest, pushing another
cold front into the region. With that, we'll see temps drop back
below normal and yet another chance for precipitation, some of which
may be frozen.

Bsh

Aviation (for the 18z tafs through 18z Thursday afternoon)
issued at 1127 am cst Wed feb 20 2019
expect conditions to improve throughout the afternoon and into the
evening hours. The dz has also come to an end across most of the
area. Model guidance suggests some fog development possible at
kcou and kuin late tonight into thurs morning. There are some
questions regarding cloud cover over night that may prevent the
fog development. Have only added a tempo group for now and will
continue to monitor.

Specifics for kstl ksus kcps: expect conditions to continue to
improve this afternoon and into the evening. Terminals will
probably become scattered briefly this afternoon before more MVFR
cigs move back into the region. Otherwise, expect CIGS to lift
above 2 kft late this afternoon, thenVFR tonight.

Tilly

Preliminary point temps pops
Saint louis 31 48 32 47 0 5 5 20
quincy 27 40 27 44 0 0 5 10
columbia 28 48 30 46 0 5 5 20
jefferson city 28 49 30 46 0 5 5 20
salem 30 46 32 49 5 5 5 20
farmington 29 47 34 46 0 5 10 40

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
Rolla / Vichy, Rolla National Airport, MO19 mi19 minW 1310.00 miMostly Cloudy38°F28°F68%1012 hPa

Wind History from VIH (wind in knots)
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Last 24hrE15
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E6E9E6E3SE4SE4S6S9SW8SW9W14
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1 day agoN5NW5N3NE6NE8NE5NE6E3NE5NE4E5E8E7E8E6E8E12E14E10E12E13E10E11
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2 days agoW16
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NW11W8W6NW9NW6NW7NW8N7N5N7N5

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 (17,4,5,8)
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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.