Thursday, January18, 2018 L-36.com


Marine Weather and Tides
Aurelia, 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 7:48AMSunset 5:23PM Thursday January 18, 2018 7:41 AM CST (13:41 UTC) Moonrise 8:43AMMoonset 7:00PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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 Aurelia, IA
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location: 42.73, -95.36     debug


Area Discussion for - Sioux Falls, SD
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Fxus63 kfsd 181111
afdfsd
area forecast discussion
national weather service sioux falls sd
511 am cst Thu jan 18 2018

Short term (today and tonight)
issued at 405 am cst Thu jan 18 2018
a wrapped up short wave and vort MAX is currently moving
southeastward across the western great lakes region, but has no
bearing on our weather other than passing cirrus. At the surface,
similar to yesterday winds will be from the southwest, but perhaps
not quite as brisk. The one exception could be on the downslope
side of the buffalo ridge in parts of southwest mn where winds may
be a bit breezy. Otherwise it will be a seasonably pleasant day
with mild highs ranging from the upper 30s in our far eastern
zones, to the upper 40s in our south central sd areas. For lows
tonight, used a combination of guidance readings which picked up
on terrain features, which keeps river valleys much cooler than
exposed terrain.

Long term (Friday through Wednesday)
issued at 405 am cst Thu jan 18 2018
Friday continues to look like an exceptionally warm january day,
with zonal flow aloft under a broad ridge of high pressure.

Temperatures will run about 20 degrees above average for this time
of year. Partly sunny skies with light winds will aid in continuing
to melt snow across the region. Saturday will also be warm, 10 to 15
degrees above normal, with increasing cloud cover ahead of the next
weather system.

Saturday night into Sunday morning, a high amplitude upper level
trough moves over the central plains. Strong dynamic support aloft
will quickly deepen surface low pressure to the south and
southeast of the tri-state area. This track puts the region in the
northwest quadrant of the surface cyclone: a favorable location
for snow production. Uncertainty remains on snow amounts, as some
models, including the ECMWF have a less progressive upper trough,
which causes the surface cyclone to develop a bit further south
and east, therefore reducing snow potential for all except
northwest iowa. This is in contrast to the 12z ECMWF which curled
the cyclone to the northeast producing heavy amounts of QPF over
much of our area.

Another threat with this system will be lowered visibility due to
blowing snow. A tight pressure gradient is likely to cause 20 to 30
mph winds that will gust to 30+ mph. Those traveling on Sunday into
Monday may want to leave extra time to get to their destinations,
because any snow that does fall, regardless of amounts, will be on
the move, causing winter driving conditions.

A third potential with this system is a brief period of freezing
drizzle as the system arrives Sunday morning. This would be
primarily limited to northwest iowa during the Sunday morning
timeframe, and accumulations look very light. If the system is
slower to arrive, this could be a moot point, given colder air would
keep the precipitation type as all snow.

Without getting lost in the details, a few things are becoming
clear: 1) snow continues to look likely for Sunday into Monday. 2)
areas of blowing snow are likely, as winds will be strong as the
system moves through. 3) plan for a return to winter driving
conditions Sunday and Monday.

Winds lighten up Tuesday through Thursday, with quieter weather
expected as a more seasonally cool air mass moves in behind Sunday
and Monday's system. Ridging aloft looks to keep precipitation
potential low during this period.

Aviation (for the 12z tafs through 12z Friday morning)
issued at 511 am cst Thu jan 18 2018
only high clouds will be found across the area, producingVFR
conditions through tonight.

Fsd watches warnings advisories
Sd... None.

Mn... None.

Ia... None.

Ne... None.

Short term... Mj
long term... Vandenboogart
aviation... Mj


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Cherokee, Cherokee Municipal Airport, IA10 mi67 minN 010.00 miFair18°F14°F88%1016.9 hPa
Storm Lake, IA11 mi47 minWSW 610.00 miFair19°F14°F79%1016.6 hPa

Wind History from CKP (wind in knots)
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Last 24hrS10S10
G17
SW11
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SW12
G18
SW15
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G21
SW11SW12SW10SW8SW7SW10SW9SW5SW5SW7S6S6SW3S10S5S8
1 day agoN8N9
G14
NW8NW9NW7NW7W8NW7NW6W3CalmCalmS3S3CalmCalmS4CalmCalmS7S4S5S8S9
2 days agoNW18
G25
NW16
G24
NW17
G26
N15
G25
NW17
G26
NW14
G22
NW13
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N18
G22
NW14
G20
NW11
G21
NW10
G16
NW15
G20
NW12
G17
NW13
G16
N11N7N7N8
G18
N9
G14
N10N10
G15
N11N7NW8

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
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Midwest    EDIT
Geos

Wind Forecast for Sioux Falls, SD (8,2,3,4)
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Ground Weather Radar Station Des Moines, IA
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weather_mapweather_map weather_map

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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.