Tuesday, September26, 2017 L-36.com


Marine Weather and Tides
Nevada, IA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:05AMSunset 7:04PM Tuesday September 26, 2017 7:48 AM CDT (12:48 UTC) Moonrise 12:15PMMoonset 10:11PM Illumination 33% 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 Nevada, IA
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location: 42.02, -93.46     debug


Area Discussion for - Des Moines, IA
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Fxus63 kdmx 261157
afddmx
area forecast discussion
national weather service des moines ia
657 am cdt Tue sep 26 2017

Short term today through tonight
issued at 355 am cdt Tue sep 26 2017
at the surface the cold front will be over far eastern iowa at 12z
and continue to move towards the great lakes through the day. To
the west, high pressure will build into the region. Aloft, the
upper low and associated trough will swing northeast. Precip will
move into eastern portions of the forecast area by 18z and be out of
the state by mid afternoon. A weak vort MAX lifting across the
forecast area this morning along with some forcing will be enough
for some isolated storms especially south this morning but by mid to
late morning any threat of storms will be east of the forecast area.

There is a pretty broad area of low clouds over the upper midwest
and into the plains so even though the rain ends, I am not looking
at much in the way of clearing until mid to late afternoon.

Cooler and drier air move in for tonight and for the first time in
awhile we will see temperatures tonight at or slightly below normal
with lows from the mid 40's to the mid 50's.

Long term Wednesday through Monday
issued at 355 am cdt Tue sep 26 2017
area of high pressure will be in place across iowa on Wednesday in
conjunction with the thermal trough moving through the area. Sunny
skies and cool conditions will prevail with high temperatures in
the 60s to near 70. Despite the area of high pressure, the wind
will be breezy by the afternoon with good mixing occurring to
around 850 mb. A vigorous short wave will drop southeast through
minnesota on Thursday. Iowa will be mainly in the subsidence
region of the upper short wave therefore the threat for
precipitation will be quite low. Mixing will be deeper on Thursday
and nearing 700 mb. Therefore the diurnal breezy winds can be
expected again. The short wave dropping southeast and the upper
level ridge developing to the west will lead to northwest flow
aloft for iowa by Friday. This will allow another surge of colder
air to drop south into the state Friday into the early portion of
Saturday. Friday nights temperatures will be cool with lows in the
40s and potential a few 30s across the north as winds drop off
with the arrival of high pressure.

Warm advection will arrive late Saturday and into Sunday as the
area of high pressure moves east and upper level ridging moves
east into the midwest. High temperatures on Sunday will be well
into the 70s. Precipitation chances will arrive by early next
week though the typical seasonal transition issues are beginning
to show up in guidance. Timing and placement issues with several
highly amplified systems moving into the pacific northwest and the
strength of the subtropical high over the southeast CONUS are
creating less certainty by days 6-7. The overall pattern with lead
to southwest flow into iowa and eventual moisture return. The
ecmwf being much more amplified with the subtropical high and a
bit farther west resulting in less gulf moisture for the region.

The GFS is much more aggressive with moisture return just beyond
the extended.

Aviation for the 12z tafs through 12z Wednesday morning
issued at 657 am cdt Tue sep 26 2017
cold front to continue to push east. Precip behind the front is
tied to an upper level system that will lift northeast today as
well. Winds will shift to the NW across all TAF locations by 18z.

Lifr CIGS will gradually lift to MVFR CIGS by afternoon then become
vfr late in the day.

Dmx watches warnings advisories
None.

Short term... Fab
long term... Donavon
aviation... Fab


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ames, Ames Municipal Airport, IA9 mi55 minN 06.00 miFog/Mist66°F66°F100%1013.5 hPa
Boone Municipal, IA21 mi53 minWNW 61.00 miFog/Mist63°F62°F100%1014.2 hPa
Ankeny Regional Airport, IA24 mi53 minW 45.00 miLight Rain66°F66°F100%1014.2 hPa

Wind History from AMW (wind in knots)
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Last 24hrCalmN5CalmNE343N4CalmW25
G37
N10N8NW5NE3E5E6CalmW3SW6CalmE4S4S3SW4Calm
1 day agoCalmSE4SE5S8SW9S14
G20
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G17
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S16S10S8SE5S4SE5SE4SE4CalmS3CalmSE3CalmCalmCalm
2 days agoSE5SE4S8S11S12
G19
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G23
S16
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S14
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S13S7S7SE4SE4SE5S3SE4SE4SE5SE5SE4CalmCalmSE3

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
east_satellite

GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for Des Moines, IA (8,2,3,4)
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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 numerious 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.