Marine Weather and Tides
7/21/2018 Trying to make page Mobile Friendly
|Sunrise 6:06AM||Sunset 8:57PM||Saturday July 21, 2018 10:11 PM CDT (03:11 UTC)||Moonrise 2:43PM||Moonset 12:40AM||Illumination 68%|
EDIT (on/off)  Help
7 Day Forecast for Marine Location Near Aurelia, IAHourly EDIT Help
Area Discussion for - Sioux Falls, SD  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus63 kfsd 212308|
area forecast discussion
national weather service sioux falls sd
608 pm cdt Sat jul 21 2018
Short term (this evening through Sunday)
issued at 256 pm cdt Sat jul 21 2018
morning fog and low stratus has slowly but gradually started mixed
out through the early afternoon hours, resulting in a perfect
Saturday afternoon by late july standards. On a large scale, the
region continues to sit in a northwesterly flow aloft regime in
between a large cut-off low to our east and building ridge to the
west. This will allow for continued quiet weather and light winds
into the overnight hours.
Thunderstorms are expected to develop this evening and overnight
well to our west across the high plains ahead of an incoming wave
and push of warm advection. These storms will try and move east but
will very quickly out run their instability by around the mo river.
Cams support this idea of any precip activity rapidly fading by the
time it reaches our coverage area and thus will only carry slight
chance pops west of the james river for early Sunday. Temperatures
will run similar to Saturday, perhaps a degree or two higher, or
generally in the upper 70s to mid 80s. Look for a mix of Sun and
clouds as relatively light winds could again lead to some patchy fog
or lower clouds Sunday morning, in addition to the leftover mid and
upper level debris from overnight convection.
Long term (Sunday night through Saturday)
issued at 256 pm cdt Sat jul 21 2018
by Sunday night and early Monday, a jet streak sneaks by to our
north with a cold front trailing southward through our area. This
should be enough forcing to spark renewed thunderstorm activity with
the initial development to the west of our cwa. While storms near
and west of the mo river have the potential to be strong,
instability becomes fairly meager as one moves east, again likely
leading to decaying or at least weakening activity by the time it
moves toward the i-29 corridor. This is further supported in the
day 2 marginal outlook from SPC covering areas west of the james|
Another wave and associated front passes around the Tuesday night
and Wednesday time frame and could bring another chance of showers
and storms. Models diverge some by mid week with the placement of
the boundary(s) but agree on an active jet overhead. For this
reason, occasional precip chances may continue thru the rest of
the work week, although no one particular day emerges as being
overly impressive or having a higher confidence.
Temperatures through the entire period remain somewhat steady,
generally fluctuating between the mid 70s and mid 80s for afternoon
highs and mid 50s to mid 60s for overnight lows.
Aviation (for the 00z tafs through 00z Sunday evening)
issued at 603 pm cdt Sat jul 21 2018
diurnal CU field will quickly dissipate this evening, leaving
continueVFR conditions into the overnight hours. Again, concerns
about fog and potential stratus development by Sunday morning.
There should be a gradual increase in mid-level clouds and a bit
more of a mixy boundary layer to prevent dense fog. That said,
will monitor trends this evening.
Can't rule out a few showers impacting hon by morning, with mid-
level clouds spreading eastward during the day.
Fsd watches warnings advisories
Short term... Kalin
long term... Kalin
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Cherokee, Cherokee Municipal Airport, IA||10 mi||77 min||N 0||10.00 mi||Fair||73°F||65°F||77%||1017.6 hPa|
|Storm Lake, IA||11 mi||77 min||NNE 5||10.00 mi||Fair||70°F||62°F||78%||1017.9 hPa|
Wind History from CKP (wind in knots)
|1 day ago||W||NW|
|2 days ago||SE||SE||Calm||S||SE||S|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help
EDIT (on/off)  Help
Weather Map and Satellite Images(on/off)  HelpWeather Map
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.
target = "new">Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for Sioux Falls, SD (23,6,7,8)(on/off)  Help
Ad by Google
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.