Saturday, December7, 2019
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Marine Weather and Tides
Chapman, KS

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:31AMSunset 5:06PM Saturday December 7, 2019 6:17 AM CST (12:17 UTC) Moonrise 2:46PMMoonset 2:48AM Illumination 80% Phase: Waxing Gibbous; Moon at 10 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 071144 AFDTOP

Area Forecast Discussion National Weather Service Topeka KS 544 AM CST Sat Dec 7 2019

. Update to aviation forecast discussion .

SHORT TERM. (Today and tonight) Issued at 340 AM CST Sat Dec 7 2019

The 1030mb surface high has progressed east and is now centered over the Great Lakes region at 09Z, although high pressure remains dominant over our area as we transition into zonal flow. This is keeping us under clear skies with cirrus toward the Rockies ahead of an upper low off the Pacific coast. This setup will result in plenty of sunshine for today with lee troughing developing in the afternoon, which will interact with the surface high to tighten the pressure gradient in the afternoon. This will give us some breezy southerly winds to usher in warmer air, and with mixing heights around 925mb for the majority of the CWA, we can expect highs in the low to mid 50s across the area. This WAA regime will keep temperatures mild through the overnight hours as we see morning lows ranging through the 30s.

LONG TERM. (Sunday through Friday) Issued at 340 AM CST Sat Dec 7 2019

The surface high slides well east by Sunday morning with clouds increasing through the day as the aforementioned upper low moves across the southwestern US as an open wave. This feature merges with a broad longwave trough set to swing across the northern US on Monday and Tuesday. As this takes place, we'll retain enough warm air on Sunday to still see highs in the low to mid 50s despite the clouds before a strong cold front pushes south on Monday. Fropa will quickly shift winds to the north Monday morning with CAA holding temperatures to the low to mid 30s in north central KS, while east central KS may at least see low to mid 40s. There could be enough frontogenesis in the morning to squeeze out a few snowflakes in northern KS, but without much moisture to speak of, the probability of this appears low so only have slight chance PoPs in this area for now. The bigger story will likely be the surge of colder air behind the front which appears to stick with us through at least mid-week. The bulk of the Arctic air looks to stay in the Upper Midwest, so while the impact here looks significantly less, we can at least expect below normal temperatures until the trough pushes east. More uncertainty exists for the end of the week, but current guidance shows another weak shortwave passing south of the area at that time with temperatures returning to the 40s, still remaining dry.

AVIATION. (For the 12Z TAFS through 12Z Sunday morning) Issued at 537 AM CST Sat Dec 7 2019

Southerly winds will remain light in the morning, then increase during the afternoon to 10-15 kts with some 20 kt gusts possible at MHK. Sfc winds should diminish this evening, but then LLWS looks to develop and last through the overnight. This may end late in the period, after which point stratus or fog could become a concern. Timing on these will need to be monitored in future updates, but otherwise VFR conditions prevail.

TOP WATCHES/WARNINGS/ADVISORIES. NONE.

SHORT TERM . Picha LONG TERM . Picha AVIATION . Picha


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Riley - Marshall AAF, KS17 mi22 minSW 510.00 miFair25°F19°F78%1027.1 hPa

Link to 5 minute data for KFRI

Wind History from FRI (wind in knots)
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Last 24hrN8N6N7N11N9N7N6N6N3NE4NE4CalmCalmCalmCalmCalmCalmCalmSW6S4CalmW4CalmSW5
1 day agoCalmNE3N4CalmCalmW4CalmCalmCalmN8N5CalmCalmNE3N10N8N11
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2 days agoCalmSW4SW4W7W5W4W4W7W7SW6S3SW2SW1N2CalmCalmCalmCalmN4CalmCalmN4NE4NE4

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
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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
Wind Forecast for Topeka, KS (7,2,3,4)
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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 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.