Sunday, March26, 2017 L-36.com


Marine Weather and Tides
Huey, IL

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:46AMSunset 7:15PM Sunday March 26, 2017 6:08 AM CDT (11:08 UTC) Moonrise 6:08AMMoonset 5:52PM Illumination 1% Phase: Waning Crescent; Moon at 28 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 Huey, IL
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location: 38.64, -89.3     debug


Area Discussion for - St. Louis, MO
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Fxus63 klsx 260836
afdlsx
area forecast discussion
national weather service saint louis mo
336 am cdt Sun mar 26 2017

Short term (through late tonight)
issued at 334 am cdt Sun mar 26 2017
a stacked low pressure system will continue its slow northeastward
progress today before rejoining the prevailing flow as an open wave.

Isolated to scattered rain showers will continue in the vicinity of
the upper circulation today, and there may be some diurnal
enhancement of shra coverage this afternoon. The cold front
associated with this system moved through the region last night, but
the boundary will be lifted back northward as a warm front later
today in response to the flow induced by another low pressure system
located upstream. The combination of large scale ascent ahead of the
approaching low pressure system along with a southwesterly llj
impinging on the aforementioned boundary will produce a broad area
of precipitation tonight which will spread across the entire cwa
tomorrow (see discussion below).

Kanofsky

Long term (Monday through Saturday)
issued at 334 am cdt Sun mar 26 2017
the active pacific jet stream and thus the active pattern across the
central and southern CONUS will persist through the period. The
synoptic pattern at the start of the period will feature one pv
anomaly/shortwave trough pushing into southeast mo. This will be
the first in a series of two systems to impact the region through
next weekend.

The main focus of this period continues to be on strong/severe storm
potential on Monday afternoon into early Monday evening. The
morning will start with showers and elevated thunderstorms forced by
isentropic ascent on the nose of a 40-45 knot low-level jet. This
activity should become less widespread through the late morning
hours as it shifts off to the northeast. The exact details of
potential convective evolution on Monday afternoon into Monday
evening remain a bit murky. Thermodynamic profiles will become
increasingly favorable for severe weather across southeast mo and
southwest il late Monday morning into Monday afternoon ahead of a
surface low and trailing cold front with MLCAPE increasing to 500-
1500 j/kg. Deep-layer shear, while not overly impressive for this
time of year at 25-35 knots, will also be supportive of some strong
to severe weather. However, the 12knam and some of the hi-res cams
suggest that activity could focus more along a pre-frontal trough
(or perhaps a convectively-induced cold pool from overnight plains
convection) across southern il and western ky (mainly east of the
lsx cwa). Others suggest that the more vigorous afternoon
development will remain along the surface front, putting more of
southeast/south-central mo and southwest il in a severe threat.

Therefore, there is some uncertainty with how Monday will play out,
but as of now it looks like the best severe chances will be across
southeast mo and southwest il in the lsx CWA (and locations
south/east of the lsx cwa) from the early afternoon into the early
evening. The main threats look to be large hail and damaging winds.

The cold front will push through the region Monday night, bringing
an end to the showers/thunderstorms. Tranquil conditions will
continue into Tuesday night, before the second system arrives
Wednesday into Thursday. Guidance continues to differ with this
system, as the GFS seems to be a southern outlier with the surface
low compared to the ecmwf/gem solutions. Therefore, have continued
to favor the northern solutions which places another vertically
stacked low-pressure system right over central/eastern mo Thursday
into Thursday night. This will once again set the stage for showers
and low-topped thunderstorms.

That system will meander to the east by Friday afternoon, allowing
conditions to dry out for the remainder of the period. Despite the
systems passing through, we will never really experience much of an
airmass change, so temperatures in the low to mid 60s are likely
through much of the upcoming week.

Kd

Aviation (for the 06z tafs through 06z Sunday night)
issued at 1053 pm cdt Sat mar 25 2017
surface and upper level low near or just northeast of cou will
move slowly northeastward late tonight and Sunday. Most of the
scattered showers will move north-northeast of the TAF sites late
tonight. Prevailing cloud ceiling will drop into the ifr catagory
late tonight with light fog possible, then gradually rise into
theVFR catagory Sunday afternoon. The south-southeast surface
wind will veer around to a west-southwest direction late tonight
and Sunday morning.

Specifics for kstl: surface and upper level low near or just
northeast of cou will move slowly northeastward late tonight and
Sunday. Most of the scattered showers will be north-northeast of
stl late tonight. Prevailing cloud ceiling will drop into the ifr
catagory late tonight with light fog possible, then gradually
rise into theVFR catagory Sunday afternoon. The south surface
wind will veer around to a west-southwest direction late tonight
and Sunday morning.

Gks

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
Centralia Municipal Airport, IL14 mi73 minN 07.00 miOvercast56°F55°F99%1010.8 hPa
Salem, Salem-Leckrone Airport, IL18 mi73 minSSW 810.00 miOvercast57°F54°F90%1011.2 hPa

Wind History from ENL (wind in knots)
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Last 24hrS7S14SE12
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1 day agoS10S9S5S13
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2 days agoE3E5E3SE7SE5SE7SE6E8E6SE10SE9SE10SE13
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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
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IR Satellite Image from GEOS
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GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for St. Louis, MO (7,2,3,4)
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Ground Weather Radar Station Evansville, IN
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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.