Saturday, April20, 2019 L-36.com


Marine Weather and Tides
Dardanelle, AR

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 6:32AMSunset 7:50PM Saturday April 20, 2019 11:15 AM CDT (16:15 UTC) Moonrise 8:23PMMoonset 6:38AM Illumination 99% Phase: Waning Gibbous; Moon at 16 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 Dardanelle, AR
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location: 35.25, -93.23     debug


Area Discussion for - Little Rock, AR
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Fxus64 klzk 201102 aaa
afdlzk
area forecast discussion... Updated
national weather service little rock ar
602 am cdt Sat apr 20 2019

Aviation
Vfr conditions are expected through the period, with no
significant weather or obstructions to visibility.

Prev discussion (issued 358 am cdt Sat apr 20 2019)
short term... Today through Sunday night
should be a nice couple of days, as surface high pressure settles
into the region. With little in the way of cloud cover, highs
today will range in the upper 60s to lower 70s. The high will
shift eastward through Sunday, with winds gaining a southerly
component, and temperatures moderating as low level moisture
increases.

Long term... Monday through Friday
the period begins with h500 ridge centered over the tn valley. To
the west, over the four corners region, a positively tilted upper
closed low is expected to deepen a bit more before moving east.

Between systems, upper mid-level flow will be out of the southwest.

To the north of ar, there will be a surface low moving northeast
across NE ia mo ks with an associated cold front trailing to the
southwest. East of ar, surface high pressure will be moving away
from the region. This low pressure should track far enough northwest
of the state that impacts locally should be limited to increasing
moisture and breezy conditions between these two surface features.

The upper pattern should amplify as the trough out west becomes an
open wave and ejects east into the southern rockies. The ridge will
shrink in areal coverage but maintain its overall location over the
tn valley. With increased southwesterly flow, upper level energy is
forecast to move across northwest portions of ar. At the surface, a
frontal boundary will be located across southern mo northwest ar
left over from the aforementioned surface low well north of ar.

Showers and thunderstorms are expected to develop as upper energy
interacts with the frontal boundary aided with synoptic scale ascent
downstream of the trough. Through late Tuesday, most precipitation
will be isolated to northwest ar and the southern plains.

By early Wednesday, the upper trough becomes increasingly positively
tilted and elongated. The surface boundary begins moving south into
the state. The focus for showers and thunderstorms will also shift
south increasing pop chances across much of the state. Pw values
will be fairly high with 1 to 1.5 inches common across the area.

Given high moisture content, showers and thunderstorms may become
efficient rainfall makers and train over the same locations. This
activity is expected to last through late Thursday. By midday
Thursday, the surface boundary will be south of ar. At the same
time, the upper level trough will be moving through east tx with a
strengthening surface low pressure system. Once again the CWA will
reside on the north side cool sector of this low. While
thunderstorms are expected over the course of several days, the
severe potential appears to remain low as best CAPE profiles should
be elevated and will be competing with latent heat release from
ongoing convection across the area. The upper level trough will be
weakening as it approaches ar, becoming increasingly positively
tilted, and parallel with the surface boundary. Putting all this
together, large scale synoptic features do not advertise a favorable
severe weather set up. Heavy rainfall will likely be the main story
with this system.

Model runs over the last day have become increasingly progressive
with the trough moving across the southern u.S.. This trend will
only benefit ar as this trend would lead to lower rainfall totals.

Overall the ECMWF gfs cmc advertise this faster solution so
confidence is increasing in this quicker trend but I am not totally
sold at this point so confidence with timing progression remains the
lowest of this forecast package. Upper level ridging is expected to
return on Friday as surface high pressure moves back into the
region. Quiet weather will continue through the end of the period.

Temperatures during the long term will be mild with highs in the 70s
and lows in the 50s and 60s.

Fire weather...

no significant fire weather concerns are expected through the next
seven days.

Lzk watches warnings advisories None.

Aviation... 57


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Russelville Municipal Airport, AR7 mi22 minW 1110.00 miFair62°F39°F43%1016.8 hPa

Wind History from RUE (wind in knots)
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Last 24hrN11
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NW7W5NW3CalmCalmCalmCalmCalmCalmCalmCalmCalmW3W6W11
1 day agoCalmCalmSE4N17
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NW7NW4CalmCalmCalmCalmCalmCalmCalmCalmN3CalmNW3N3NW8NW9NW13
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2 days agoS65S63S3SE3CalmCalm3E3CalmE3SE4SE4E5CalmE73CalmS3SE7
G17
W10CalmCalm

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Little Rock, AR (12,3,4,5)
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Ground Weather Radar Station Little Rock, AR
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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.