Marine Weather and Tides
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 6:36AM||Sunset 8:21PM||Tuesday August 20, 2019 10:42 PM CDT (03:42 UTC)||Moonrise 10:05PM||Moonset 10:25AM||Illumination 70%|
7 Day Forecast for Marine Location Near Vermillion, SDHourly EDIT Help
Area Discussion for - Sioux Falls, SD  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus63 kfsd 210336|
area forecast discussion
national weather service sioux falls sd
1036 pm cdt Tue aug 20 2019
Short term (this evening through Wednesday)
issued at 339 pm cdt Tue aug 20 2019
southerly flow across the central plains will feed north into
lingering outflow boundary. As the low level jet intensifies,
expect thunderstorms to develop across nebraska and move north
potentially brushing the highway 20 corridor. Deep warm cloud depths
of nearly 13k feet could lead to locally heavy rainfall. Further to
the north, drier air will feed into the region limiting northward
extent of precipitation. In areas where there are a lack of clouds,
expect temperatures to fall into the 50s with light winds.
Cooler, less humid, conditions expected on Wednesday as cool dry
airmass spreads across the region. High temperatures will generally
be in the 70s, coolest in the east where clouds will linger the
Long term (Wednesday night through Tuesday)
issued at 339 pm cdt Tue aug 20 2019
clear skies and light winds expected Wednesday night will allow
temperatures to fall below normal into the low and mid 50s.
Gradual warming trend expected Thursday into Friday ahead of a more|
active pattern working into the region this weekend. Leading wave is
expected to work into the northern plains on Friday, creating a
chance for additional showers and thunderstorms. Additional
disturbances work through the zippy mid-level flow throughout the
weekend into the first few days of next week.
Aviation (for the 06z tafs through 06z Wednesday night)
issued at 1034 pm cdt Tue aug 20 2019
thunderstorms may brush the missouri river corridor after 10z
tonight, then end by mid afternoon on Wednesday. Otherwise,VFR
conditions are expected for the remainder of the area. Winds will
be light into Wednesday evening.
Fsd watches warnings advisories
Short term... Bt
long term... Bt
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Yankton, Chan Gurney Municipal Airport, SD||20 mi||46 min||N 7||10.00 mi||Fair||75°F||70°F||84%||1016.9 hPa|
Link to 5 minute data for KYKN
Wind History from YKN (wind in knots)
|1 day ago||Calm||Calm||Calm||SE||E||Calm||SE||SE||SE||SE||SE||SE||SE|
|2 days ago||SE||N||E||Calm||NW||NW||NW||NW||N||NW|
EDIT Weekend mode (on/off) (on/off)  Help
EDIT (on/off)  Help
Weather Map and Satellite Images(on/off)  HelpWeather Map
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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Sioux Falls, SD (23,6,7,8)(on/off)  Help
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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.