Thursday, March21, 2019 L-36.com


Marine Weather and Tides
Chapman, KS

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 7:27AMSunset 7:41PM Thursday March 21, 2019 6:31 AM CDT (11:31 UTC) Moonrise 7:39PMMoonset 7:12AM Illumination 100% Phase: Full Moon; Moon at 15 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 210902
afdtop
area forecast discussion
national weather service topeka ks
402 am cdt Thu mar 21 2019

Short term (today and tonight)
issued at 352 am cdt Thu mar 21 2019
today through tonight, an upper level trough was moving onshore
across the ca coast and will dig east-southeast across the
southwestern us tonight. A down stream h5 ridge axis located
across the high plains will shift east and amplify through
tonight across the plains. A surface ridge of high pressure
across western NE will build southeast across eastern ks tonight.

Solar insolation should counter balance the weak low-level caa,
along with the pbl increasing to depth up to 890mb, so high
temperatures should reach the upper 50s to lower 60s across the
cwa with light northwest winds. Light winds and clear skies will
allow overnight lows to dip down into the lower to mid 30s.

Long term (Friday through Wednesday)
issued at 352 am cdt Thu mar 21 2019
Friday, the upper level trough across the southwestern us will
lift northeast into the central and southern high plains by 00z
sat. An upper level trough west of the hudson bay region of canada
will dig south-southeast across the eastern great lakes into new
england and the mid atlantic states late Friday night. The
resulting low-level CAA will build a surface ridge axis southward
across the mid ms river valley. Easterly winds across the CWA will
begin to veer more to the southeast during the late afternoon
hours. Stronger ascent ahead of the h5 trough and richer gulf
moisture advection northward across western tx into western ks and
eastern co will result in showers and thunderstorms developing
across the central and southern high plains. The showers will
remain well west of the CWA as drier air parcels around the mid ms
river valley ridge axis advects west and northwest across eastern
ks. High clouds will increase through the day. High temperatures
will reach the lower to mid 60s.

Friday night through Saturday night, the upper level trough
across the central and southern high plains will lift northeast
across ks on Saturday and should rotate northeast across eastern
ne and western ia by 12z sun. A surface low across southwest ks
will deepen through Saturday afternoon and southerly winds will
advect richer residual gulf northward across central and eastern
ks late Friday night and through the day on Saturday. The
combination of isentropic lift and DCVA ahead the approaching
upper level trough axis will provide for periods of showers and
perhaps a few elevated thunderstorms. Mucapes look to be under 400
j kg and widespread deep moist convection southward into southern
tx will prevent mid level lapse rates from steepening. Therefore,
any thunderstorms on Saturday should only produced isolated
lightning strikes as the only hazard. The stronger ascent ahead
of the h5 trough will shift northeast of the CWA during the
overnight hours and the steadier showers and isolated elevated
thunderstorms will shift northeast of the CWA after 6z sun. Highs
on Saturday will only reach the 50s
Sunday through Monday, there may be a few showers during the morning
hours as the filling upper level trough across eastern NE western mo
shifts east across ia into central mo. The next upstream upper
level trough is much weaker on the 00z ECMWF run. There may be
enough ascent ahead of the h5 trough for scattered light showers
on Monday. Highs on Sunday will reach the lower to mid 60s with
some afternoon insolation. Stronger low-level CAA will cool highs
into the upper 40s to mid 50s on Monday.

Monday night through Thursday, the upper trough over the mid ms
river valley will dig southeast into the southeast us as a more
amplified h5 trough develops across new england. A broad upper
level ridge across the western us will move into the plains on
Wednesday, while another upper trough moves onshore across the
western us. The western h5 trough will move towards the plains
Wednesday night into Thursday, providing a chance for showers and
perhaps a few thunderstorms as richer gulf moisture advects
northward ahead of the upper trough. Highs on Tuesday will only
reach the mid to upper 50s. Look for a warm up by weeks end with
lower 70s possible on Thursday.

Aviation (for the 06z tafs through 06z Thursday night)
issued at 1128 pm cdt Wed mar 20 2019
vfr conditions expected. Despite clear skies and high near-
surface humidity values, mixing behind the recent front's passage
should be enough to keep nocturnal br formation in check over the
next 10 hours.

Top watches warnings advisories
None.

Short term... Gargan
long term... Gargan
aviation... 65


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fort Riley - Marshall AAF, KS17 mi95 minWSW 310.00 miFair34°F30°F86%1023.2 hPa

Wind History from FRI (wind in knots)
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Last 24hrNW7NW3W5W6W8W14W12W14
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NW4NW4N7N5N4CalmCalm--W3W3SW4
1 day agoE6E8SE8
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5NW5N10NE5NE4N4NW4N6N5N8NW8N7NW6NW5NW7W5NW5
2 days agoNE5CalmNE5E8E10E10E8CalmCalmNE7SE5E4E4E7E7E6E9E6NE6NE9E4NE3E10E7

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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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 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.