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Marine Weather and Tides
Version 3.4 |
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 5:54AM | Sunset 8:50PM | Friday May 24, 2019 11:51 AM CDT (16:51 UTC) | Moonrise 12:19AM | Moonset 10:00AM | Illumination 69% |  |
7 Day Forecast for Marine Location Near Vermillion, SD
Hourly EDIT Helplocation: 42.87, -97 debug
Area Discussion for - Sioux Falls, SD
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxus63 kfsd 241102 afdfsd area forecast discussion national weather service sioux falls sd 602 am cdt Fri may 24 2019 Short term (today and tonight) issued at 401 am cdt Fri may 24 2019 showers and isolated thunderstorms continue to lift across the area very early this morning - this in association with midlevel theta e advection overspreading the region out ahead of upper level energy tracking through western sd. This activity will continue to lift to the north and east through the morning - exiting our area by late morning, with clearing skies in the afternoon. A much warmer day in store as a warm front lifts to the north, resulting in a southwesterly low level flow by afternoon. This will bring highs into the mid to upper 70s across the area. With decent mixing and ml winds averaging 15 to 30 kts, it will also be a breezy afternoon. Tonight will have mostly clear skies as a surface ridge begins to build southward into the area. Lows will run in the upper 40s to lower 50s. Long term (Saturday through Thursday) issued at 401 am cdt Fri may 24 2019 a cool front will slide through our area on Saturday, stalling just to the south of our CWA by Saturday evening. It will have only minor effects of temperatures however, with highs still climbing into the 70s. Surface high pressure drifts across the region on Saturday night and Sunday, keeping it dry, and with winds veering to southeasterly on Sunday on the backside of the high, temperatures will climb a couple of degrees over Saturday - mid to upper 70s. Shower and thunderstorm chances will return by Sunday night and Monday as low pressure deepens over western nebraska and lifts northward through the period. Cannot rule out a stronger storm over |
south central sd on Sunday evening where shear and instability is optimized. A secondary risk of stronger storms exist on Monday afternoon over northwestern ia with a warm front lifting into the area in association with the previously mentioned low pressure. It will remain warm on Monday with highs again in the 70s. The system slowly pulls away on Tuesday, allowing for cooler air to drift into the region, with temperatures mostly 60s for Tuesday and Wednesday. Shower and isolated thunderstorm chances remain into early on Wednesday as an upper level low slides across the northern plains. Below normal temperatures linger into Thursday with a northwesterly upper level flow remaining over the region, then possible warming by Friday as a more zonal upper level flow develops. Aviation (for the 12z tafs through 12z Saturday morning) issued at 557 am cdt Fri may 24 2019 showers and isolated thunderstorms will end by mid morning, with a brief period of drizzle possible after the rain ends. Ifr ceilings will improve by late morning. Southwesterly winds will pick up in the afternoon, gusting 20 to 30 kts at times into early evening. Fsd watches warnings advisories Sd... None. Mn... None. Ia... None. Ne... None. Short term... Jm long term... Jm aviation... Jm |
Weather Reporting Stations
EDIT (on/off) Help NOTE: Click on distance to see the station location on a mapAirport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Yankton, Chan Gurney Municipal Airport, SD | 20 mi | 55 min | SW 10 | 10.00 mi | A Few Clouds | 62°F | 55°F | 78% | 1010.8 hPa |
Wind History from YKN (wind in knots)
| 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | |
| Last 24hr | NW | W | W | NW | SW | Calm | N | NE | NE | NE G18 | SE | E | NE | E | NE | E | E | E | E | E | Calm | SW | SW | SW |
| 1 day ago | SW G24 | SW G19 | SW G24 | SW G27 | W G25 | SW G23 | SW | W | W | W | W | W | W | W | W | SW | W | W | W | W | W | W | NW | NW |
| 2 days ago | E G28 | E G26 | E G28 | E G29 | E G30 | E G31 | E G29 | E G28 | E G25 | E G25 | E G21 | E G20 | E | E | E | E | E | E | SE | SE | SE | S | SW | SW G21 |
Tide / Current Tables for
EDIT Weekend mode (on/off) (on/off) HelpTide / Current Tables for
EDIT (on/off) HelpWeather 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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Sioux Falls, SD (12,3,4,5)
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Ground Weather Radar Station Sioux falls, SD
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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. |