Saturday, November28, 2020
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Marine Weather and Tides
Nevada, IA

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 7:18AMSunset 4:46PM Saturday November 28, 2020 10:53 PM CST (04:53 UTC) Moonrise 4:00PMMoonset 5:29AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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 Nevada, IA
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location: 42.02, -93.46     debug


Area Discussion for - Des Moines, IA
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FXUS63 KDMX 282330 AFDDMX

Area Forecast Discussion National Weather Service Des Moines IA 530 PM CST Sat Nov 28 2020

DISCUSSION. /Tonight through Saturday/ Issued at 212 PM CST Sat Nov 28 2020

High pressure centered over southern Missouri has allowed for clear skies today. In fact, the nearest clouds on GOES-East satellite are several hundred miles away in Oklahoma/southern Kansas or North Dakota. Abundant sunshine and southwest winds into the area allowed temperatures to climb into the mid to upper 50s by 2 pm for most locations.

Big changes are on the way, however, as a cold font draped across the northern plains will dive south and across Iowa Sunday morning. Southwesterly winds will shift to northwesterly with temperatures dropping rather substantially. Highs for Sunday will will have a hard time cracking 40 degrees with most places topping out in the mid 30s. This will be accompanied by gusty northwest winds behind the front thanks to a tightening pressure gradient with decent cold air advection and subsidence into the area. Model soundings indicate winds at the top of the mixed layer of 30-36 knots depending on model or location with sustained winds at 18-23 kts. Hi-res models such as the hrrr and href suggest better gusts will occur in the southern Nebraska/northern Kansas vicinity. Thus, have opted not to issue a wind advisory as the area remains a few knots shy of criteria. Regardless, it will be a cold and blustery day exacerbated by the relatively mild conditions seen Saturday. Temperatures will continue to drop Sunday evening and with brisk winds continuing overnight Monday morning wind chills will be rather unpleasant . in the single digits.

The forecast for the upcoming week is rather quiet with no precipitation chances in the current forecast at all. While the area will be moisture starved, this does not mean that the pattern is quiet. In fact, the atmospheric pattern over the upcoming week is quite complicated with a number of deep closed lows moving across the country with embedded shortwaves. At certain points the evolution of the systems resembles somewhat of a fujiwhara effect before lifting east. The split flow cuts off moisture to the area but the complicated pattern yields high uncertainty in the temperature forecast for the upcoming week as these systems drop out of Canada. Placement of these systems could result in fairly substantial differences in temperatures.

AVIATION. /For the 00Z TAFS through 00Z Sunday evening/ Issued at 530 PM CST Sat Nov 28 2020

Quiet aviation weather is expected overnight prior to a cold front arriving toward daybreak. Widespread VFR conditions are forecast along with southwest surface winds. The front is forecast to pass through the state on Sunday morning with very strong northwest winds on the backside. Have increased wind speeds and gusts during the day on Sunday and also have added additional cloudiness as climatologically very favorable for status development on backside of frontal passages this time of year. Have kept any ceilings VFR at this time given only limited support for status in guidance.

DMX WATCHES/WARNINGS/ADVISORIES. NONE.



DISCUSSION . Hagenhoff AVIATION . Cogil


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ames, Ames Municipal Airport, IA9 mi61 minN 010.00 miFair37°F30°F76%1015.4 hPa
Boone Municipal, IA21 mi59 minWSW 810.00 miFair41°F35°F81%1014.6 hPa
Ankeny Regional Airport, IA24 mi79 minSSW 510.00 miFair43°F32°F66%1015.9 hPa

Link to 5 minute data for KAMW

Wind History from AMW (wind in knots)
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Last 24hrCalmCalmSW6SW7SW9SW8SW6SW9SW9SW8SW9SW9SW10SW11SW11SW13SW14SW12SW9SW7SW8SW8SW5Calm
1 day agoN4N5N5NW4CalmNW3CalmCalmNW3CalmNW5NW8N10NW10NW9NW9NW11NW8W4SW5SW3CalmCalmCalm
2 days agoSW7SW10W8SW6SW9SW9S6S10S9S11S11SW13SW12W12W10W10NW10NW7NW7N11N7N5N6N7

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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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 Des Moines, IA
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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.