Monday, September25, 2017 L-36.com


Marine Weather and Tides
Grapevine, TX

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 7:18AMSunset 7:21PM Monday September 25, 2017 7:14 PM CDT (00:14 UTC) Moonrise 11:17AMMoonset 10:05PM Illumination 28% Phase: Waxing Crescent; Moon at 5 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 Grapevine, TX
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location: 32.96, -97.08     debug


Area Discussion for - Fort Worth, TX
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Fxus64 kfwd 252034
afdfwd
area forecast discussion
national weather service fort worth tx
334 pm cdt Mon sep 25 2017

Short term
Through tonight
water vapor satellite imagery continued to show a large trough
over the western united states this afternoon. Lift associated
with a northeastward moving shortwave out ahead of the main trough
was bringing some showers into the western part of the forecast
area as of mid afternoon. Showers and maybe a few thunderstorms
are expected to continue to move north northeast and should remain
mainly west of a bowie to lampasas line through tonight. A little
activity may try to approach the i-35 corridor before daybreak
Tuesday. Some patchy fog may develop across central texas late
tonight, so have mentioned this from areas from meridian to
palestine southward. Lows tonight will be in the upper 60s to mid
70s and winds will be southeast at 5 to 10 mph.

58

Long term
Tuesday through the weekend
after several days of remaining planted between an upper trough
over the western CONUS and a broad upper ridge to the east, north
and central texas will finally experience a shift in the weather
pattern mid to late week, leading to opportunities for
precipitation and a return to temperatures more representative of
this time of year.

On Tuesday, the western u.S. Trough is progged to split into two
shortwave pieces of energy. One of which will lift northeast
across the northern plains, reaching the upper midwest on
Wednesday. This should give a cold front enough of a southward
push to cross the red river Tuesday and trudge slowly south
through the rest of forecast area Tuesday night and Wednesday.

While the initial shortwave exits to the northeast, the second
piece of energy will be in the form of an upper low, which will
become cut-off from the main upper level flow near the four-
corners region. This upper low will provide lift for numerous
showers and storms just west of the region over the next several
days. By late Tuesday, there should be enough lift from the upper
level low when combined with additional forcing from the surface
front to generate scattered showers and a few storms over north
and central texas. The best rain chances will be late Tuesday and
Wednesday as the front pushes slowly south, with the highest
coverage across the western-most counties where the strongest lift
will reside.

Severe weather should not be much of a concern due to the lack of
any significant instability and shear, but there could be some
locally heavy rain across the far western counties now through mid
week. A flood watch does not appear necessary at this time due to
rainfall deficits this month and lower overall QPF amounts
compared to our neighbors to the west.

The cut-off low will eventually lift northeastward into the plains
during days 5 through 7 in the forecast, which will bring an end
to the rain chances late this workweek and into the upcoming
weekend. Though an upper ridge will redevelop overhead in its
wake, drier air behind the cold front should keep temperatures
seasonal, with lows in the 50s and 60s and highs in the 80s as we
bring an end to september.

30

Aviation issued 100 pm cdt Mon sep 25 2017
low clouds moved north across the TAF sites this morning bringing
mostly MVFR ceilings, though kact has a couple of hours of ifr
ceilings. With daytime vertical mixing, the low ceilings had
broken up in the metroplex and had lifted toVFR levels at waco.

Vfr conditions will occur at all of the TAF sites through late
tonight. Expect low clouds to spread northward again before
daybreak Tuesday with bkn015 at waco starting around 09z with
some bkn009 possible 13-16z. Ceilings should improve toVFR around
17z. MVFR ceilings are expected to spread into the metroplex
around 13z before scattering out around 17z. Expect showers and
isolated thunderstorms to remain west of the i-35 corridor, west
of the TAF sites through most of the TAF period. Although not
mentioned in the TAF there will be a low chance of showers after
12z Tuesday. Winds will be southeast at 10 to 12 knots through the
period.

58

Preliminary point temps pops
Dallas-ft. Worth 74 89 73 85 69 10 20 40 30 30
waco 72 91 72 87 70 10 20 30 30 20
paris 68 89 70 87 68 5 10 10 20 20
denton 72 87 70 83 64 20 30 40 40 30
mckinney 71 88 71 85 66 10 20 30 30 30
dallas 75 90 74 87 70 10 20 30 30 30
terrell 71 91 71 89 70 5 10 20 20 20
corsicana 71 90 71 88 71 5 10 10 20 20
temple 71 88 71 85 70 20 30 40 30 20
mineral wells 70 85 68 79 63 30 40 70 50 40

Fwd watches warnings advisories
None.

30 58


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Dallas/Fort Worth International Airport, TX4 mi21 minSSE 1010.00 miPartly Cloudy89°F60°F38%1008 hPa
Dallas / Addison Airport, TX13 mi27 minESE 10 G 1410.00 miPartly Cloudy88°F60°F40%1009.5 hPa
Fort Worth, Fort Worth Alliance Airport, TX13 mi21 minSE 910.00 miMostly Cloudy87°F62°F43%1007.8 hPa
Dallas Love Field, TX14 mi21 minSE 1510.00 miPartly Cloudy89°F62°F41%1008.3 hPa
Fort Worth, Meacham International Airport, TX17 mi21 minSE 1010.00 miMostly Cloudy89°F63°F42%1008.1 hPa
Denton Enterprise Airport, TX17 mi21 minSE 710.00 miMostly Cloudy85°F63°F48%1008.5 hPa
Grand Prairie, Grand Prairie Municipal Airport, TX18 mi24 minSE 810.00 miClear88°F57°F35%1009.8 hPa
Fort Worth, Naval Air Station, TX20 mi22 minSSE 810.00 miA Few Clouds89°F62°F41%1007.8 hPa
Arlington Municipal Airport, TX20 mi21 minSE 810.00 miPartly Cloudy87°F64°F46%1008.4 hPa
Dallas, Redbird Airport, TX22 mi21 minSE 910.00 miFair87°F62°F43%1008.4 hPa

Wind History from DFW (wind in knots)
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Last 24hrSE8SE9SE10SE9S9SE8SE7SE7S8SE5SE4SE3E5S7S9S11SE15
G20
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1 day agoSE9SE7SE8S9SE11S8S9S8S7S6SE5S6S5S8S10S12SE13
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2 days agoSE11SE12SE9SE9S7SE7S7SE6S7S6S5S4SE3S4S7SE9S12S12S8
G16
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G16
E11SE10

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 SouthCentralPlains    EDIT
Geos

Wind Forecast for Fort Worth, TX (20,4,5,8)
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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.