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 7:13AM||Sunset 4:33PM||Wednesday November 25, 2020 5:14 AM CST (11:14 UTC)||Moonrise 2:44PM||Moonset 2:23AM||Illumination 77%|
7 Day Forecast for Marine Location Near Elba, MNHourly EDIT Help
Area Discussion for - La Crosse, WI  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS63 KARX 250958 AFDARX
Area Forecast Discussion National Weather Service La Crosse WI 358 AM CST Wed Nov 25 2020
SHORT TERM. (Today and tonight) Issued at 345 AM CST Wed Nov 25 2020
Forecast concerns in the short term will dense fog, improvement this morning, extent of re-development tonight, and how far north any precipitation makes it later today.
Last night, we were watching the strong moisture advection, frontogenesis, and ascent with the lead shortwave trough with the approaching storm system. Precipitation started out as snow with even a few lightning strikes across the southern part of the forecast area. The snow continued to lift north during the day Tuesday. An arc of rain and snow continued from northeast Nebraska into northern Iowa, southern Minnesota into central and southern Wisconsin. Another shortwave moved through enhancing precipitation in the band during the afternoon before generally weakening by 6pm. Temperatures were key and many valley areas with warmer temperatures experienced much of the snow melting as it fell, even though it snowed for several hours with large wet flakes. Farther south, the snow changed to rain. For much of the day Rochester was 32/33 degrees and La Crosse 34/35. The southern part of the forecast area made it into the upper 30s. Rochester, MN ended up with 4 inches of snow, breaking their daily record of 2.2 inches set in 1996. The La Crosse airport had 1 inch and here at the La Crosse NWS 3.8 inches.
The MPX 00Z sounding was saturated in the lowest 6k ft. Water vapor satellite imagery, heights and lightning strikes highlight the closed low over Kansas with thunderstorms extending from parts of Missouri into Arkansas and Texas. The northern stream 500mb trough stretched from northern WI across south central MN into southeast South Dakota. The surface map had surface low pressure centered around Emporia, KS with a front from St. Joseph, MO to Cedar Rapids, IA to Rockford, IL. Locally, temperatures had not changed from the daytime readings and were holding steady. Due to the snowfall, rainfall, warm temperatures and high dewpoints, fog with areas of dense fog were common across the region. Per obs and a look at the nighttime RGB satellite imagery, clearing did not start until the central Dakotas.
A dense fog advisory covers parts of the area until around 15Z. As the winds aloft and surface winds have been increasing, the dense fog has improved west of the river with many locations 2 mi or greater With the melting snow and variable winds. may see some of the vsbys bouncing around in southeast MN/northeast IA . but should continue to see improvement this morning.
Through the day, the storm system over Missouri will skirt the forecast area to the south. A few showers could clip our far southern counties, so left some pops in there. Little temperature change today with highs in the upper 30s to lower 40s. There is not a lot of cold air with this system, so once the low track to our southeast, the colder air edges southward. The surface flow is weak and although we lose our deeper moisture, the RAP is more pessimistic on losing the low clouds with fog redeveloping.
LONG TERM. (Thursday through Tuesday) Issued at 345 AM CST Wed Nov 25 2020
The clearing should be moving into the west Thanksgiving morning. With the decrease in clouds, we have highs in the 40s for most locations. A weak front brings a wind shift through later Thursday with some reinforcing cooler air Friday. Both of these frontal passages are dry. Highs Friday should slip back into the 30s with a few readings in the lower 40s. Southwest winds and quiet for Saturday with above normal highs 45 to 50. For Sunday into Monday we are monitoring where the energy will be focused with a mid- level trough developing over the region. The EC keeps the storm system split with a dry forecast locally, however the GFS tries to phase the storm system with accumulating snow. Our current forecast has trended toward the EC. There is a large spread in the solutions, however there is consensus on stronger winds on the back side of the system with colder temperatures for the start of the work week. The global models seem to come together better with a significant system for parts of the Great Lakes into the Ohio River Valley.
AVIATION. (For the 06Z TAFS through 06Z Wednesday night) Issued at 1058 PM CST Tue Nov 24 2020
IFR conditions are expected to prevail for most if not all of the forecast period through Wednesday evening. The fog will remain until the middle of the morning with LIFR to IFR reductions. It is expected to lift as some slightly drier air aloft starts to mix in underneath the inversion. This drier air does not look to be enough to break up the ceilings however, with these remaining at or below 1000 feet for the most part.
ARX WATCHES/WARNINGS/ADVISORIES. WI . Dense Fog Advisory until 10 AM CST this morning for WIZ017-029- 032>034-041>044-053>055-061.
MN . Dense Fog Advisory until 10 AM CST this morning for MNZ088-096.
IA . Dense Fog Advisory until 10 AM CST this morning for IAZ011-030.
SHORT TERM . Zapotocny LONG TERM . Zapotocny AVIATION . 04
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.
|Winona, Winona Municipal Airport-Max Conrad Field, MN||16 mi||20 min||NW 3||10.00 mi||Overcast||34°F||33°F||100%||1011.5 hPa|
Link to 5 minute data for KONA
Wind History from ONA (wind in knots)
|1 day ago||W||Calm||NW||Calm||Calm||Calm||Calm||NE||Calm||E||SE||SE||Calm||Calm||Calm||Calm||Calm||Calm||S||SE||SE||SE||S||SE|
|2 days ago||Calm||Calm||SE||SE||SE||SE||W||W||W||W||W||W|
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.