Friday, September22, 2017 L-36.com


Marine Weather and Tides
Lawrence, KS

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 7:08AMSunset 7:18PM Friday September 22, 2017 1:14 AM CDT (06:14 UTC) Moonrise 8:28AMMoonset 8:00PM Illumination 3% 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 Lawrence, KS
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location: 38.93, -95.34     debug


Area Discussion for - Topeka, KS
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Fxus63 ktop 220422
afdtop
area forecast discussion
national weather service topeka ks
1122 pm cdt Thu sep 21 2017

Update to aviation forecast discussion...

Short term (this evening through Friday)
issued at 256 pm cdt Thu sep 21 2017
feels a lot more like june out there than september, with highs
in the western counties in the middle 90s and around 90 in the
east, with dewpoints 70 degrees west to middle 70s east. This
makes for heat indices from the middle 90s to low 100s. Breezy
south winds likely helping little for much cooling. Shortwave
lifting out of oklahoma across eastern kansas having little impact
on the area except to continue mixing and moisture advection into
the state. Wave lifting out of the panhandles may generate a few
storms out over the dryline but atmosphere not supporting keeping
those chances continued up into our area and have kept rain
chances out of the forecast.

Forecast for tonight into tomorrow is nearly identical, with
overnight lows only falling into the 70s and highs once again rising
to near todays numbers. Breezy conditions also continue into Friday,
as well as higher dewpoints. This will make for another day of heat
indices around 100. Fire danger is also elevated, but higher rh
should will continue to help temper fire danger.

Long term (Friday night through Thursday)
issued at 256 pm cdt Thu sep 21 2017
the main focus of the extended forecast is a high amplitude upper
trough progged to move slowly west to east across the plains for
the first half of next week. The overall trend with the models has
been to slow the progression of the upper trough and surface front
through the plains. It now looks like the front moves through late
Monday and Tuesday morning. So the forecast shows the higher pops
in for Monday through Tuesday morning. There remains some timing
differences with the frontal passage so the pops are still
somewhat broad brushed through this period. Also with the slower
trends in the models, have held onto some chance pops, mainly
south of i-70, through Wednesday as the GFS hints at some
potential for overrunning. Although there is also some uncertainty
in this as the ECMWF and gem push the front into north tx and ar.

So think there is some fine tuning to due in the pop forecast
before all is said and done.

Temps are expected to gradually cool through the weekend as the
models show 1000-500 mb thicknesses lowering and 850 mb temps
cooling. Although highs are still anticipated to be in the mid
80s and around 90. And a southerly surface wind should keep lows
in the mid to upper 60s. Temps for Monday and Tuesday are the
more uncertain of the forecast due to the uncertainty in the
frontal timing. By Wednesday low level cold air advection should
bring a bigger cool down.

Aviation (for the 06z tafs through 06z Friday night)
issued at 1119 pm cdt Thu sep 21 2017
expectVFR conditions at all terminals through the next 24 hours.

The 40 to 45 kt low-level jet about 1000 ft to 1500 ft will
continue through sunrise. Therefore expect periods of low-level
wind shear within the lowest 2000 feet through 13z.

Top watches warnings advisories
None.

Short term... 67
long term... Wolters
aviation... Gargan


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lawrence, Lawrence Municipal Airport, KS9 mi83 minSE 910.00 miFair80°F72°F76%1011 hPa
Topeka, Philip Billard Municipal Airport, KS18 mi82 minS 1310.00 miFair81°F73°F77%1009.9 hPa
Topeka, Forbes Field, KS18 mi82 minSSE 1010.00 miFair80°F73°F79%1010.4 hPa

Wind History from LWC (wind in knots)
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Last 24hrSE6S6E4E5SE4E5E4SE10SE13SE18SE14
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1 day agoSE12SE12S10S12
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2 days agoE4NE3NE5E7E6E5E5E6E9SE12SE10SE15
G21
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G28
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G21
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G23
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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
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for Topeka, KS (2,6,7,8)
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Ground Weather Radar Station Kansas City/Pleasant Hill, 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.