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Marine Weather and Tides
Version 3.4 |
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17. 1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support. |
| Sunrise 6:53AM | Sunset 6:20PM | Thursday March 4, 2021 4:21 PM CST (22:21 UTC) | Moonrise 12:00AM | Moonset 10:04AM | Illumination 63% |  |
7 Day Forecast for Marine Location Near Vermillion, SD
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location: 42.87, -97 debug
Area Discussion for - Sioux Falls, SD
(on/off) Help NOTE: mouseover dotted underlined text for definitionFXUS63 KFSD 042101 AFDFSD
AREA FORECAST DISCUSSION National Weather Service Sioux Falls SD 301 PM CST Thu Mar 4 2021
SHORT TERM. (This Evening through Friday) Issued at 259 PM CST Thu Mar 4 2021
After another mild and dry spring afternoon, light southeasterly winds decrease overnight. The combination of radiational cooling along with some subtle near-surface moisture advection may lead to some low stratus and patchy fog formation during the early morning hours Friday. Nevertheless, several models keep the surface layer unsaturated, so similar to previous nights, fog is expected to be a localized issue. Fog dissipates by the mid to late morning as daytime heating increases mixing.
Another above average warmth day is expected on Friday, albeit with a bit more cloud cover. Temperatures are forecast to be above 5 degrees cooler than Thursday due to a broad Canadian air mass over the western Great Lakes edging slightly closer to Siouxland. Winds remain light.
LONG TERM. (Friday Night through Thursday) Issued at 259 PM CST Thu Mar 4 2021
Over the weekend, the ridge aloft amplifies while the surface flow becomes more southerly. High temperatures over south central South Dakota surge back into the mid 60s on Saturday. On Sunday the ridge aloft begins to break down, leading to enhanced mixing as the pressure gradient tightens. The surface winds gusting 30 to 40 mph aid in bringing down warmer 850 hPa temperatures dry-adiabatically. Expect widespread highs in the low to mid 60s Sunday afternoon. The combination of stronger winds and warmer temperatures leads to high fire danger both Saturday and Sunday.
Another broad upper-level ridge develops for Monday and Tuesday of next week. Temperatures remain mild (about 20 degrees above normal) with persistent dry conditions.
On Wednesday and Thursday, a longwave trough over the western CONUS will move eastward over the Plains. Models differ on how they handle the pattern change, but precipitation chances increase and have been kept in the forecast. The latter portion of the work week will be cooler, with a return to nearer to normal temperatures as a cool continental air mass moves in.
AVIATION. (For the 18Z TAFS through 18Z Friday afternoon) Issued at 1159 AM CST Thu Mar 4 2021
Light southeast winds and clear skies prevail this afternoon. Overnight, low stratus cloud decks are expected to move into the region from the east and southeast, causing IFR conditions for many sites. These clouds could lower to the surface at times, causing areas of fog. Fog and low clouds thin mid to late morning Friday.
FSD WATCHES/WARNINGS/ADVISORIES. SD . NONE. MN . NONE. IA . NONE. NE . NONE.
SHORT TERM . VandenBoogart LONG TERM . VandenBoogart AVIATION . VandenBoogart
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. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| Yankton, Chan Gurney Municipal Airport, SD | 20 mi | 26 min | ESE 12 | 10.00 mi | Fair | 62°F | 36°F | 38% | 1021.1 hPa |
Link to 5 minute data for KYKN
Wind History from YKN (wind in knots)
| 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 | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | |
| Last 24hr | S | SE | SE | SE | SE | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E G15 | E | E | E | E |
| 1 day ago | NW | NW | W | S | SW | W | Calm | Calm | NW | NW | Calm | NW | NW | Calm | Calm | Calm | Calm | NE | SE | E | SW | S | S | |
| 2 days ago | S | SE | E | E | SE | SE | SE | SE | SE | S | S | S | S G24 | S G26 | S G21 | S G25 | S G21 | S G19 | SW G22 | SW G23 | SW G25 | W | W | W G21 |
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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