Friday, October23, 2020
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L-36.com

Marine Weather and Tides
Chapman, KS

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:44AMSunset 6:38PM Friday October 23, 2020 5:15 PM CDT (22:15 UTC) Moonrise 2:06PMMoonset 11:52PM Illumination 46% Phase: First Quarter Moon; Moon at 7 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 Chapman, KS
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location: 38.89, -97     debug


Area Discussion for - Topeka, KS
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FXUS63 KTOP 232055 AFDTOP

Area Forecast Discussion National Weather Service Topeka KS 355 PM CDT Fri Oct 23 2020

SHORT TERM. (This evening through Saturday) Issued at 355 PM CDT Fri Oct 23 2020

The shortwave that brought showers and thunderstorms to the area this morning has progressed to the east into the Upper Mississippi Valley with surface high pressure building into the Plains. Northerly winds remain breezy through sunset with continued CAA and cloud cover keeping highs in the low to mid 40s this afternoon. Cloud cover may hold on for parts of the area overnight although temperatures are expected to fall into the mid to upper 20s area- wide regardless. A Freeze Warning has been issued for tonight through 10am Saturday as a hard freeze is expected. The Canadian High shifts further southeast during the day Saturday allowing for a dry, but cool day with highs only reaching the upper 40s.

LONG TERM. (Saturday night through Friday) Issued at 355 PM CDT Fri Oct 23 2020

Attention then turns to a deepening upper trough over the Intermountain West that is progged to dig into the Rockies and Plains Sunday into Monday. Precipitation is expected to spread across the forecast area Sunday afternoon through the day Monday with uncertainty remaining in what type of and how much precipitation will be had. Temperatures during the afternoon Sunday should support liquid precipitation before cold air begins to build in from the north as another Canadian high works into the Plains. Colder temperatures look to allow rain to transition to snow overnight Sunday into Monday with measurable snow possible. There remains a fair amount of uncertainty in amounts as spread in deterministic models and ensemble members remains quite high. The GFS is the most bullish with snowfall amounts as it tracks colder air into the area faster than the NAM/ECMWF. The best chance for accumulating snow looks to be in north central Kansas, although any additional details still need to be ironed out.

Besides the chance for wintry precip, colder Canadian air is likely to be in place for the first part of next week with highs in the 30s and 40s Monday and Tuesday and lows in the teens and 20s. Temperatures may begin to rebound a bit by mid-week as a cut-off low approaches the CWA. The track of this low and what if means in terms of precipitation chances for the forecast area are unclear at this point, though temperatures would support rain to a rain/snow mix.

AVIATION. (For the 18Z TAFS through 18Z Saturday afternoon) Issued at 1241 PM CDT Fri Oct 23 2020

MVFR cigs are expected through much of this afternoon before gradually lifting to VFR this evening. Gusty northerly winds continue through this evening with winds weakening and shifting to the east then southeast by late Saturday morning. Could see high-end MVFR cigs return to KTOP/KFOE Saturday morning, but have kept cigs VFR for now.

TOP WATCHES/WARNINGS/ADVISORIES. Freeze Warning from 11 PM this evening to 10 AM CDT Saturday for KSZ008>012-020>024-026-034>040-054>056-058-059.



SHORT TERM . Flanagan LONG TERM . Flanagan AVIATION . Flanagan


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Riley - Marshall AAF, KS17 mi19 minN 14 G 1910.00 miOvercast42°F28°F58%1028.3 hPa

Link to 5 minute data for KFRI

Wind History from FRI (wind in knots)
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1 day agoNE5NE8NE7NE8E6NE5NE6NE6NE5NE4N6CalmS6
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2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNE4NE3NE4CalmCalmNE8E6E9E8NE7E8E5E6

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station Topeka, KS
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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 numerous 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.