Tuesday, March19, 2019 L-36.com


Marine Weather and Tides
Nevada, IA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:17AMSunset 7:26PM Tuesday March 19, 2019 2:47 AM CDT (07:47 UTC) Moonrise 4:54PMMoonset 5:49AM Illumination 97% Phase: Waxing Gibbous; Moon at 13 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 190501
afddmx
area forecast discussion
national weather service des moines ia
1201 am cdt Tue mar 19 2019

Short term tonight through Tuesday
issued at 322 pm cdt Mon mar 18 2019
high pressure has spread across iowa through the day, keeping
winds fairly light and variable. While dry air is in place from
the surface through the middle atmosphere, there is enough
moisture aloft for high cirrus to filter across the northwestern
half of the state through the afternoon with daytime cumulus
developing across southeast iowa. Temperatures have not been
impacted and have climbed into the upper 30s north to upper 40s
south.

Expect cloud cover to increase across the area overnight as a
shortwave across the dakotas drops south. Increased moisture
transport out of the gulf will phase with theta-e advection to
induce modest QPF across southern iowa. Best forcing and moisture
still remains south of the area across missouri, however a quarter
to half inch of rain is possible with this system. While
precipitation will largely fall as rain, a brief window for snow
exists on the front edge of the system as evaporative cooling acts
to cool the column. Expect minimal to no impact from any frozen
precipitation Tuesday morning before everything quickly switches
over to all snow. There is also the potential for light flurries on
the back side of this system as it exist Wednesday night, however
with very dry behind the system expect that as the column dries,
precip will simply end rather than transition to any type of wintry
precipitation.

Long term Tuesday night through Monday
issued at 322 pm cdt Mon mar 18 2019
confidence: medium to high
weak system expected to pass south of the area by 12z Wednesday with
ridge of high pressure again building into the northern central
plains. Though the timing is different, both the GFS euro show a
trough cold front dropping south into the region Wednesday. This
should limit any additional warming over the area for about a day;
with similar temperatures expected Wednesday as Tuesday. Though
the front will likely be dry, there will be some mid to high level
clouds accompanying the boundary as it passes south through the
area. With an area of high pressure building over the northern
plains from Thursday into Saturday, relatively quiet and
precipitation free conditions are expected. Currently there are
some minor differences in the amount of returning warmer air aloft
between the GFS euro. The GFS remains slightly faster than the
euro with a 2-3c quicker increase in h850 warming by 00z Friday.

The current forecast seems a good compromise between the two
models and generally, with iowa situated on the backside of a
strong upper level trough, it is possible that another wave may
briefly impact the temperatures aloft for into Thursday afternoon.

The euro would suggest mid 50s while the GFS would suggest
temperatures closer to 60 by Thursday. Looking ahead to Friday,
additional warming develops across the region ahead of a stronger
shortwave over the southwest. There remain some minor differences
between the GFS euro on timing into the weekend. The GFS is
trending on breaking down the ridge a bit faster while the euro
maintains a stronger ridge over iowa back northwest into the
northern plains. The 12z GFS is now closer to the euro in terms of
arrival time, with both models bringing the main forcing in after
06z across the region between 06 and 12z. Despite the similarity
in timing, the euro is initially forecasting a wave faster and
farther south that the GFS but then occludes the system and
lingers it over our forecast area from Saturday night through
about Monday night. Confidence drops with regard to the rainfall
potential and evolution of the storm. Signal for all rain with
some potential for convection if the upper level system tracks
close enough to our area. Temperatures remain mild with highs in
the lower 50s north to the lower 60s from central to south. Lows
generally in the 30s and 40s during the weekend.

Aviation for the 06z tafs through 06z Tuesday night
issued at 1201 am cdt Tue mar 19 2019
little change to previous forecast with mainlyVFR conditions for
much of the forecast period. Mainly mid to highVFR ceilings
although lower MVFR ceilings seem likely later Tuesday into
Tuesday evening in southern iowa. Winds will be light tonight
increasing slightly into Tuesday from the south to southwest.

Dmx watches warnings advisories None.

Short term... Hagenhoff
long term... Rev
aviation... Cogil


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ames, Ames Municipal Airport, IA9 mi55 minSSE 410.00 miFair27°F24°F89%1027.6 hPa
Boone Municipal, IA21 mi53 minS 510.00 miFair32°F30°F93%1026.4 hPa
Ankeny Regional Airport, IA24 mi53 minN 010.00 miFair28°F26°F93%1027.8 hPa

Wind History from AMW (wind in knots)
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Last 24hrNW8NW5NW5NW7NW7N3W6W4NW5W8W8W6NW5NW6NW4W4W4W3CalmCalmCalmCalmSE3SE4
1 day agoNW5NW6NW5NW4NW6W5W8W7W10W9NW8W7W8W8W4NW6NW8NW3NW4W4W4W4NW6NW6
2 days agoW7W6W5W5SW6W5W3CalmSW3S5SE6SE6SE6E4NE6E4NE8NE10NE8NE8N7N3N4NW6

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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GOES 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.
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Wind Forecast for Des Moines, IA (3,6,7,8)
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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.