Wednesday, April25, 2018 L-36.com


Marine Weather and Tides
Princeton, TX

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:42AMSunset 8:06PM Wednesday April 25, 2018 6:34 PM CDT (23:34 UTC) Moonrise 2:53PMMoonset 3:20AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 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 Princeton, TX
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location: 33.15, -96.49     debug


Area Discussion for - Fort Worth, TX
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Fxus64 kfwd 252325 aaa
afdfwd
area forecast discussion... Updated
national weather service fort worth tx
625 pm cdt Wed apr 25 2018

Aviation
00z tafs
becomingVFR this evening. North flow continuing through Friday.

The upper low responsible for our rainy day will skirt the ark-la-
tex tonight, reaching the lower mississippi valley by daybreak
Thursday morning. Its downstream axis of lift has been sheared into
spotty showers that will soon shift southeast of the metroplex. The
more intense south texas convection is literally stealing our
thunder, intercepting the rich 850mb flow that would otherwise reach
the frontal slope above north and central texas. Thunder has been
removed from all TAF sites though the patchy light rain will linger
into the evening at waco.

The edge of a deep dry slot is coincident with the back edge of the
low clouds. This will reach the metroplex 00-01z (7-8pm cdt), and
vfr will prevail thereafter. Winds will gradually diminish this
evening as the postfrontal surface high settles into the region.

While clear skies, light winds, and wet ground might suggest some
reductions in visibility late tonight into Thursday morning, the
vigorous north winds above the nocturnal boundary layer should
disrupt the radiational cooling process, thus precluding ground fog.

This will continue to be monitored for subsequent TAF issuances, but
the 00z package will maintain p6sm visibility.

25

Short term issued 330 pm cdt Wed apr 25 2018
tonight
rain chances and cloudy conditions will continue through this
evening and then the weather will rapidly improve tonight after
midnight. As of 3pm, the cold front had cleared all of north
central texas. The upper level low that was centered over central
kansas this morning has moved rapidly into eastern ks western mo
this afternoon. To the southwest of us in central and southwest
texas an MCC has developed where instability is much higher than
what we have to work with today. This thunderstorm complex is
expected to stay to our south so our main concern will be just be
some light rain and perhaps an isolated thunderstorm through the
late afternoon and early evening hours. Today's rain has been
light and thunderstorm activity has been limited as we just don't
have enough moisture or instability to cause any concern for heavy
rain flooding or severe weather. Rain and clouds will be clearing
out from northwest to southeast tonight as much drier air filters
in behind the upper low.

Long term issued 330 pm cdt Wed apr 25 2018
Thursday through next Wednesday
Thursday will be a nice day as drier post-frontal air fully
invades the region. Temperatures will rebound into the lower 70s
across our north and east, and mid and upper 70s across the
southwestern half of the CWA as lingering low-level cold advection
dwindles.

The cold front parade won't be over, however, as another reinforcing
shot of drier air should sweep through the area Thursday night
and into Friday morning, aided southward by another energetic mid-
level disturbance. While low and mid-level moisture will have
been effectively driven towards the gulf coast after today's
(Wednesday's) front, large scale ascent afforded by 40-60 m 12
hour height falls should overspread the northern half of the
region as the aformentioned vort MAX pivots across the arklatex.

Forecast soundings across our northeastern counties indicate the
potential for a sliver of elevated instability to materialize
between 850-600 mb or so, right under the impinging tropopause
fold. Given our proximity to the cold core of this shortwave
trough axis, we'll insert some low 20% pops north and east of a
roughly decatur to canton line. Any precipitation coverage should
be minimal, but extended hi-res guidance does indicate some
potential for isolated convection Thursday evening and into the
early overnight period.

A slight warming trend will commence Friday and through the
weekend with precipitation-free conditions as high pressure rules
the skies. We should see highs nudge back into the lower 80s
across a good chunk of the region by Sunday, but dewpoints in the
50s will keep things feeling comfortable. Initial return flow will
commence on Sunday as the surface ridge slides east of the region.

Stronger southerly breezes are in store on Monday which will begin
to draw 60+ dewpoint air across much of the region. We'll keep
pops below 20% across central texas Monday afternoon for now, but
instability may increase sufficiently to result in some showers
and storms embedded within the moisture plume.

On Tuesday, we'll be turning our attention to broad cyclonic flow
which should begin materializing across the western CONUS with the
potential for several embedded shortwave disturbances to pinwheel
out across the great plains during the middle of the week. Timing
differences still exist among the global deterministic guidance,
with the GFS hinting at a lead wave resulting in thunderstorms by
Tuesday afternoon, while the ECMWF holds off on any higher precip
chances until the end of the week with a cold front. Either model
you pick, the large-scale pattern does look like it will
ultimately favor more widespread thunderstorm chances (with a
potential for strong to severe storms), but whether this is on
Tuesday or Wednesday Thursday remains in question. We'll continue
to refine this portion of the forecast through the rest of this
week.

Carlaw

Preliminary point temps pops
Dallas-ft. Worth 48 74 53 74 51 0 0 10 0 0
waco 47 76 51 75 49 40 0 5 0 0
paris 46 69 51 70 47 5 0 20 0 0
denton 44 74 50 73 47 0 0 20 0 0
mckinney 46 71 51 71 47 0 0 20 0 0
dallas 49 75 55 74 52 0 0 10 0 0
terrell 48 73 52 74 49 30 0 20 0 0
corsicana 48 72 52 73 50 50 0 10 0 0
temple 47 76 51 76 50 40 0 5 0 0
mineral wells 44 76 49 74 46 0 0 5 0 0

Fwd watches warnings advisories
None.

25 66


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
McKinney - McKinney National Airport, TX6 mi42 minNNW 810.00 miOvercast53°F50°F89%1020.2 hPa
Dallas / Addison Airport, TX22 mi40 minNW 910.00 miOvercast52°F48°F88%1020.3 hPa
Greenville / Majors, TX23 mi65 minNNW 10 G 1610.00 miLight Rain57°F53°F88%1019 hPa

Wind History from TKI (wind in knots)
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Last 24hrE3E3E3CalmCalmSE3CalmS5E4N4CalmNW3N5N8N15N18
G26
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N10N15N6N9NW13NW13
G21
NW8
1 day agoNW7NW3W5CalmNE3CalmCalmCalmCalmCalmCalmCalmSW3N3N3N4N5CalmCalmCalm--CalmSE3SE4
2 days agoNW8NW8NW7NW6W5NW4W6NW7NW8NW8N8N10NW8NW8NW14NW13NW11N12NW15N10N12
G17
N10N5N10

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 SouthCentralPlains    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 Fort Worth, TX (19,4,5,8)
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Ground Weather Radar Station Dallas/Fort Worth, TX
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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.