Wednesday, June19, 2019 L-36.com


Marine Weather and Tides
Nevada, IA

Version 3.4
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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 5:36AMSunset 8:54PM Wednesday June 19, 2019 12:02 PM CDT (17:02 UTC) Moonrise 9:58PMMoonset 6:38AM Illumination 95% Phase: Waning Gibbous; Moon at 17 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 191052
afddmx
area forecast discussion
national weather service des moines ia
552 am cdt Wed jun 19 2019

Discussion today through Tuesday
issued at 358 am cdt Wed jun 19 2019
the focal point of the forecast is the precipitation lingering today
over southern iowa then thunderstorm chances Thursday and into the
weekend. Currently the precipitation is beginning to erode across
central iowa and is becoming more focused over the southeast third
of the state. That region of the state will remain the area of
highest probability of showers and thunderstorms through today as an
upper level system passes across missouri today. Locally heavy
rainfall of 2 inches is possible but much like Tuesday, any heavy
rain should remain isolated enough to minimize any potential
hydrologic impacts.

Strong theta-e advection returns to western and central iowa on
Thursday ahead of a short wave trough that will arrive later in the
day. A ribbon of strong instability should develop over the western
half of the state by the afternoon. Convective initiation may occur
during the afternoon as the upper level energy arrives and may
evolve quickly into organized storms that may roll down the
instability gradient into central iowa. While not currently
outlooked in spc's swody2,should convection develop, it could
quickly become severe with damaging winds, large hail and a few
tornadoes all possible. The number 1 cips analog for Thursday from
the 00z NAM was from jun 30, 1993 when several tornadoes occurred
under a similar setup. Will begin highlighting at least the
potential for a few severe storms for Thursday afternoon and evening.

A more widespread potential for severe weather arrives on Friday as
the upper level low pushes east southeast into montana and wyoming
thu night into Friday and steepens the southwest flow aloft into the
midwest. This will lead to a potential very active 24 to 48 hrs over
the region. Still a chance an overnight MCS will arrive into iowa
early Friday morning from nebraska south dakota. At this time, all
signs point to the region recovering from any associated cold pool
with the steep southwest flow continuing to push warm and moist air
into the state. This should lead to vigorous redevelopment of storms
by late after and evening as another short wave arrives. The
potential for tornadoes will be defendant on the location of the
warm front but it is now the time of year that iowa gets some of its
most significant damaging wind events. A significant damaging wind
event or two will be possible, especially in vicinity of the surface
warm front where the the 0-3km theta-e differences are the greatest.

A few areas of heavy rainfall may occur.

The boundary is expected to linger and bisect the state Saturday
then move a bit further east on Sunday before departing by Monday
afternoon. As previously mentioned, this could be a very active
period as the strong southwest flow remains until the primary upper
wave lifts out early Monday. This could lead to multiple rounds of
storms with some severe weather and heavy rainfall potential. The
accumulative rainfall may become an issue over central and southern
iowa should these areas become the target of multiple rounds of
storms. The severe weather potential is not as clear cut and will be
defendant on environmental impacts from previous convection and
arrival timing of upper level features.

Low thunderstorm chances remain mentioned in the forecast for early
next week. May be able to remove those pops soon if trends persist
and drier conditions prevail as high pressure approaches the region
late Monday into mid next week.

Aviation for the 12z tafs through 12z Thursday morning
issued at 548 am cdt Wed jun 19 2019
a few patches of ifr MVFR CIGS this morning and fog with vsbys in
the 3-5sm range this morning. Showers and a few thunderstorms will
be possible, especially in vicinity of kotm. CIGS may fall to MVFR
at times in that area. MainlyVFR conditions are expected over
northern iowa through much of the period with the exception of
some fog redevelopment tonight. The wind will be from the
east northeast at 10kts or less.

Dmx watches warnings advisories
None.

Discussion... Donavon
aviation... Donavon


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ames, Ames Municipal Airport, IA9 mi70 minno data10.00 miMostly Cloudy70°F62°F76%1007.6 hPa
Boone Municipal, IA21 mi68 minENE 1010.00 miMostly Cloudy70°F66°F88%1008.5 hPa
Ankeny Regional Airport, IA24 mi68 minNE 710.00 miOvercast68°F62°F83%1008.5 hPa

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Last 24hrN8N5NE5NE5N6N5NW6--N3CalmN7N4N4CalmN6N6NE4E3NE4NE5NE6NE8--E8
1 day agoSE8SE8E7E3N18
G24
N9N7N4NW4NE5E4CalmCalmNE4CalmCalmCalmSE4CalmN33N6NE6N6
2 days agoCalmE5N4--NE6NE4E3E5E4SE4E5E5SE3E3E3E3E3SE5SE6SE5SE4SE3CalmSE7

Tide / Current Tables for
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Weather Map and Satellite Images
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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.
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Wind Forecast for Des Moines, IA (13,3,4,5)
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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.