Wednesday, September23, 2020
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Marine Weather and Tides
Apple River, IL

Version 3.4
NOTICE
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 6:46AMSunset 6:54PM Wednesday September 23, 2020 2:26 PM CDT (19:26 UTC) Moonrise 1:14PMMoonset 10:21PM Illumination 40% Phase: Waxing Crescent; Moon at 6 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 Apple River, IL
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location: 42.44, -90.06     debug


Area Discussion for - Quad Cities, IA/IL
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FXUS63 KDVN 231730 AFDDVN

Area Forecast Discussion National Weather Service Quad Cities IA IL 1230 PM CDT Wed Sep 23 2020

. AVIATION UPDATE .

SYNOPSIS. Issued at 327 AM CDT Wed Sep 23 2020

RAP analysis had an upper ridge over the Central Plains and Upper Mississippi Valley. This has led to quiet weather again tonight with temps in the 50s. Some patchy fog is possible in low-lying areas heading into early this morning, but nothing widespread is expected.

SHORT TERM. (Today and Tonight) ISSUED AT 327 AM CDT Wed Sep 23 2020

Another warm early fall day with light SSW to SW winds and highs in the upper 70s on avg. Mild conditions are forecast overnight with lows only falling into the mid 50s to lower 60s.

LONG TERM. (Thursday through Tuesday) ISSUED AT 327 AM CDT Wed Sep 23 2020

Thursday and Friday

Not much change in the forecast for late this week with highs in the mid/upper 70s Thursday and low to mid 80s Friday (about 10-15 F above normal for late September).

There is a slight chance for a few showers or an isolated storm across the north on Thursday as a low amplitude shortwave trough grazes eastern Iowa and northwest Illinois. Chances are a little higher north of our CWA closer to the track of a mid level vorticity max.

Breezy conditions are expected on Friday with SW gusts between 20-30 mph during the afternoon, highest in the northwest.

Saturday and Sunday

The weekend will start out well above normal with highs in the upper 70s to lower 80s on Saturday. A cold front is forecast to gradually move through from the late afternoon into Saturday night. NBM temps on Sunday are slightly cooler, although still in the 70s.

Limited forcing aloft and weak convergence along the cold front is not supportive of widespread rain. Therefore have low chances in the forecast for isolated showers and storms.

Monday On

A 150+ kt Pacific jet is forecast to sharply dig into the Upper Midwest early in the weak as pronounced ridging develops along the U.S. West Coast. Models are developing a strong surface low over the Northern Great Lakes on Monday and push a cold front through the area Monday night.

At this time, the brunt of the steady precip associated with this system may miss our area to the north, staying closer to the core of the upper low. However, there are low chances for periodic showers, and we'll have to watch the potential for windy conditions behind the cold front. NBM temps cool down into the 50s and 60s by Tuesday and Wednesday. Uttech

AVIATION. (For the 18Z TAFS through 18Z Thursday Afternoon) ISSUED AT 1227 PM CDT Wed Sep 23 2020

VFR conds through this taf cycle. There may be patchy fog late tonight into early Thursday morning, but confidence too low to mention. Generally south winds less than 10 knots.

DVN WATCHES/WARNINGS/ADVISORIES. IA . NONE. IL . NONE. MO . NONE.

SYNOPSIS . Uttech SHORT TERM . Uttech LONG TERM . Uttech AVIATION . Haase


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Platteville Municipal Airport, WI27 mi31 minSW 810.00 miFair75°F59°F57%1016.6 hPa

Link to 5 minute data for KPVB

Wind History from PVB (wind in knots)
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Last 24hrSW3SW7SW7CalmSE3SE5SE4SE5S4S4S3S3S4S5S4S3S3S3S5SW4SW5SW6SW8S11
1 day agoS11
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Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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wmap_A
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
Ground Weather Radar Station Quad Cities, IA
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weather_mapweather_map weather_map


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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.