Wednesday, April8, 2020
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Marine Weather and Tides
Rochester, MN

Version 3.4
NOTICE
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 6:35AMSunset 7:47PM Wednesday April 8, 2020 10:55 AM CDT (15:55 UTC) Moonrise 7:44PMMoonset 6:19AM Illumination 99% Phase: Full Moon; Moon at 15 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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7 Day Forecast for Marine Location Near Rochester, MN
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location: 44.05, -92.49     debug


Area Discussion for - La Crosse, WI
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FXUS63 KARX 081158 AFDARX

Area Forecast Discussion National Weather Service La Crosse WI 658 AM CDT Wed Apr 8 2020

SHORT TERM. (Today through Tonight) Issued at 249 AM CDT Wed Apr 8 2020

Area caught up in stagnant/baggy airflow as a cold front was hung up from northeast MN through south central MN, into eastern NE. In the meantime, temperatures have cooled down to the dewpoint and as a result, widespread fog has set up -mainly east of the Mississippi River. This is expected to last until around 9 am before dissipating as a slightly drier push of air moves in from the west as the cold front pushes through. As such, a dense fog advisory is in effect until 9 am this morning for portions of northeast IA/southeast MN, and much of southwest into central WI.

As the cold front moves through this morning, it will be reinforced by a fairly vigorous mid-level wave moving through the Northern Plains. Steepening lapse rates, favored right entrance region of 300mb jet, and increasing pv-advection with the mid-level wave will lead to showers and possibly a few thunderstorms this morning into this afternoon. Otherwise, breezy northwest winds kick in today, ushering in cooler/drier (compared to yesterday) airmass. Plan on highs in the lower 50s to lower 60s.

High pressure builds in tonight for clearing and chilly conditions. Look for lows bottoming out in the 20s and lower 30s.

LONG TERM. (Thursday through Tuesday) Issued at 249 AM CDT Wed Apr 8 2020

A secondary mid-level trough and surface cold front drops into the area Thursday. This will likely bring in extensive cumulus field along with isolated shower activity. Otherwise, a rather raw day on tap with highs only in the upper 30s to middle 40s. Fairly breezy northwest winds will only add to the chill.

Cold high pressure builds into the region Thursday night into Friday. Despite full sunshine Friday, highs will struggle into the 40s for highs.

Deepening longwave trough carves out over the central CONUS through the rest of the period with an embedded shortwave trough rotating through Saturday for a chance of rain. Latest ECMWF/GFS model run then shows deeper surface low ejecting northeast out of the southern Plains up toward the Great Lakes region Sunday into Monday. Will have to watch this system closely as there may be enough cold air available for some cold rain turning into snowfall. Otherwise, looking raw/chilly with highs Sunday in the 40s and in the 30s/40s Monday.

AVIATION. (For the 12Z TAFS through 12Z Thursday morning) Issued at 652 AM CDT Wed Apr 8 2020

LIFR fog will quickly burn off within the next few hours at LSE. Otherwise showers and perhaps a few rumbles of thunder will be the story for today as a strong impulse works through the region. Already have had a few rumbles of thunder south of RST this morning. Expect the showers upstream over southern MN and northern IA to fill in over the next few hours as forcing strengthens along a cold front dropping through the area. That will bring the greatest chance of showers from late morning into the afternoon before the line slides off to the east by late afternoon. Could see MVFR visibilities within the heavier showers, also a small chance for briefly touching MVFR ceilings. Otherwise back to solidly VFR by this evening. Winds turning NW behind the front today will become gusty this afternoon, remaining somewhat breezy into tonight.

ARX WATCHES/WARNINGS/ADVISORIES. WI . Dense Fog Advisory until 9 AM CDT this morning for WIZ032>034- 041>044-053>055-061.

MN . Dense Fog Advisory until 9 AM CDT this morning for MNZ088-096.

IA . Dense Fog Advisory until 9 AM CDT this morning for IAZ010-011- 029-030.



SHORT TERM . DAS LONG TERM . DAS AVIATION . Kurz


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rochester, Rochester International Airport, MN10 mi61 minSSW 610.00 miOvercast46°F42°F86%1009.8 hPa
Dodge Center Airport, MN18 mi59 minW 410.00 miLight Rain48°F42°F82%1009.5 hPa

Link to 5 minute data for KRST

Wind History from RST (wind in knots)
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Last 24hrW11W11W7NW7W10N8
G14
NW8N9N8N5NE3CalmCalmS5S6S5NW8NW7SW5W7W6N7NW4SW6
1 day agoSE14SE12S12S15SE15S11SE9SE8SE9SE10SE11SE11SE11SE11S10S8S6E6NE7S5SE11SE7S9S11
2 days agoSE7SE8S9S12
G17
SE93S13S8S6SE4SE6SE8SE9S10S8S9S11SE10S9S8SE7SE9SE9--

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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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

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Wind Forecast for La Crosse, WI (11,2,3,4)
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Ground Weather Radar Station La Crosse, WI
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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 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.