Marine Weather and Tides
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.
|Sunrise 7:50AM||Sunset 6:29PM||Sunday October 25, 2020 11:11 PM CDT (04:11 UTC)||Moonrise 3:23PM||Moonset 12:43AM||Illumination 69%|
7 Day Forecast for Marine Location Near Sergeant Bluff, IAHourly EDIT Help
Area Discussion for - Sioux Falls, SD  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KFSD 260404 AAA AFDFSD
AREA FORECAST DISCUSSION . UPDATED National Weather Service Sioux Falls SD 1104 PM CDT Sun Oct 25 2020
UPDATE. Issued at 632 PM CDT Sun Oct 25 2020
Light snow will continue to taper off across southeast SD and southwest MN early this evening. Any accumulations in this area will be pretty minimal. Main focus for the evening is snow moving into northwest IA, far northeast NE, and the MO River Valley from Yankton to Omaha. Generally expect another 1-2 inches in this area before this activity tapers off late tonight.
Travelers should use caution this evening. Road conditions are still being reported as snowy and icy across much of the region.
SHORT TERM. (This Evening through Monday) Issued at 322 PM CDT Sun Oct 25 2020
Anybody else look out there window today and think: It's still October, right? Well, the answer is yes, despite the snowy and cold day we've had. In terms of accumulations, reports across the region show totals ranging from 2 to 5 inches, with isolated higher amounts across central South Dakota. As we head into the late afternoon/evening, snow will continue to push southeast toward the Highway 20 corridor. While isentropic lift will certainly be on the downward trend, think we could see up to another inch of snow in that region late tonight, as soundings still show decent saturation in the DGZ. Otherwise, expect overcast skies and light northwesterly winds to prevail overnight, with lows falling into the teens across much of our area. Could even see a few locations up north drop into the single digits, however, this will largely depend on how quickly the mid-upper level clouds disperse in the morning. Will continue to monitor and adjust values in the meantime.
Dry conditions and cold temperatures will be on tap Monday, as a sfc ridge and upper level trough slide toward the region. In regard to temperatures, upper level clouds combined with light winds and fresh snow will likely keep highs in the low to mid 20s, causing high cold temperature records to be in jeopardy.
LONG TERM. (Monday Night through Sunday) Issued at 322 PM CDT Sun Oct 25 2020
By Monday night, the aforementioned sfc ridge will move overhead the region. Much like the previous discussion mentioned, models soundings continue to hint that mid-upper level clouds should disperse prior to daybreak. Thus, with the aid of radiational cooling, lows will likely plummet into the single digits and approach record values yet again. It's also worth noting that wind chill values near daybreak Tuesday will be near zero or just below, so remember to bundle up before heading outdoors!
Otherwise, expect quiet conditions to prevail for the remainder of the extended period, as broad NW flow aloft maintains its influence over the region. On the plus side, should see temperatures gradually warm during the latter half of the week, with highs forecast to climb into the 40s to low 50s by the weekend. And with Halloween right around the corner, I think we can all agree, this is a great treat to have!
AVIATION. (For the 06Z TAFS through 06Z Monday night) Issued at 1101 PM CDT Sun Oct 25 2020
May see lingering flurries near SUX and in northwest IA late tonight, but generally expect VFR conditions to prevail through the period. May see mid level stratus creep in near HON from the north late tonight, but otherwise mostly just cirrus. Northwest winds overnight will gradually turn west, AOB 15 kts on Monday.
FSD WATCHES/WARNINGS/ADVISORIES. SD . Winter Weather Advisory until 1 AM CDT Monday for SDZ070-071.
MN . NONE. IA . Winter Weather Advisory until 1 AM CDT Monday for IAZ003-012>014- 020>022-031-032.
NE . Winter Weather Advisory until 1 AM CDT Monday for NEZ013-014.
UPDATE . BP SHORT TERM . SSC LONG TERM . SSC AVIATION . BP
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.
|Sioux City, Sioux Gateway Airport, IA||3 mi||80 min||N 13||10.00 mi||Overcast||25°F||17°F||72%||1031.6 hPa|
Link to 5 minute data for KSUX
Wind History from SUX (wind in knots)
|1 day ago||N||NW||W||W||NE||Calm||NE||E||Calm||Calm||SE||SE||SE||SE||E||E||E||E||NE||E||E||E||NE||NE|
|2 days ago||N||N||N||N||N|
EDIT Weekend mode (on/off) (on/off)  Help
EDIT (on/off)  Help
Weather Map(on/off)  Help Weather Map
GEOS 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
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. Google supplies the ads on this site. Because I do not track who you are, I cannot customize how these ads are served. They may be personalized to improve the ad experience. If you do not want personalized ads, please adjust the settings on the Google site HERE. NOTE: The best I can determine, this site is not subject to CCPA but I am doing my best to comply anyway.
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 numerous 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.