Thursday, January18, 2018 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 7:28AMSunset 5:49PM Thursday January 18, 2018 7:39 AM CST (13:39 UTC) Moonrise 8:30AMMoonset 7:26PM 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 Grapevine, TX
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location: 32.96, -97.08     debug


Area Discussion for - Fort Worth, TX
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Fxus64 kfwd 181242 aaa
afdfwd
area forecast discussion... Updated
national weather service fort worth tx
642 am cst Thu jan 18 2018

Aviation
12z tafs
the proximity of an arctic ridge axis is keeping winds light early
this morning, but as it finally shifts east today, southerly
winds will become better organized. Despite negligible upglide, a
plume of 850mb moisture has proliferated on the back side of the
departing high. As this translates to the east, waco is the most
likely TAF site to be impacted byVFR ceilings. Will carry only a
scattered deck within the metroplex, butVFR ceilings will be
possible later today.

Developing lee troughing will steadily increase surface wind
speeds on Friday. A westerly component to the low-level flow will
keep the primary moisture surge into east texas, but MVFR stratus
may approach waco Friday morning.

25

Short term issued 350 am cst Thu jan 18 2018
today and tonight
Wednesday's sunshine helped to modify our arctic air mass, but
with extraordinarily dry air remaining in place, overnight
temperatures fell into the teens throughout nearly all of north
and central texas. Dew points have recovered some during the past
24 hours, but significant dew point depressions remain during the
predawn hours. The surface winds are near calm again this morning,
but wind speeds have increased above the surface. Although this
warm advection has so far been tepid, the stirring of the air
alone is disrupting the radiational cooling of the stable layer
beneath the nocturnal inversion. As a result, readings are
unlikely to fall much more before sunrise, and low temperatures
this morning will easily be warmer than yesterday morning's.

The deepening upper trough over the trans-pecos will move east
today, spreading considerable cloudiness across south texas. Some
of this will clutter the skies above our central texas zones this
afternoon, but the dry air and steadily increasing south winds
should assure all areas reach the 40s for the first time since the
arctic front arrived early in the week.

Southerly flow will continue tonight, but since the front pushed
the tropical moisture well offshore, dew points will only slowly
climb. This will mean another widespread freeze tonight across all
of north and central texas, but even the coldest spots Friday
morning should be in the 20s.

25

Long term issued 350 am cst Thu jan 18 2018
Friday through Wednesday
the shortwave that is currently over the big bend will trek east
across texas through Friday. Meanwhile, southerly winds will
increase to 10 to 20 mph during the day Friday in the response to
the development of a lee side trough. A warming trend will
continue with highs expected to reach the upper 40s southeast
where there will be more cloud cover to the lower 60s northwest
where there will be abundant sunshine. There will be a low chance
of showers during the day southeast of a temple to palestine line.

As the lee side trough deepens further Friday night, a low level
jet will develop bringing a stronger surge of moisture northward.

Some warm advection showers will be possible mainly east of i-35
Friday night and Saturday. It will be breezy Saturday with south
winds 15 to 25 mph. Lows Friday night will be in the upper 30s to
mid 40s and highs on Saturday will be in the mid 60s east to the
mid 70s west.

An upper level trough will move across the rockies Saturday and
into the plains on Sunday. A dryline and pacific cold front will
move rapidly east across texas Sunday. With increased moisture,
instability and shear ahead of the dryline, there will be a
chance of showers and thunderstorms across most of the forecast
area Sunday morning and along and east of i-35 during the
afternoon. The best chances of thunderstorms will be to the east
of i-35 i-35e. The cold front will overtake the dryline Sunday
evening and sweep through east texas Sunday night. Have left some
low pops along and east of a line from bonham to terrell to
cameron into the early evening. South winds 15 to 20 mph ahead of
the dryline will shift to the southwest and west with the dryline
and to the northwest behind the front. Highs Sunday will be in
the mid 60s to lower 70s and lows Sunday night will be in the mid
30s to lower 40s.

Dry weather with near seasonal normal temperatures is expected for
the early and middle parts of next week. The GFS indicates that a
weak shortwave will move across the region on Wednesday that the
ecmwf and the canadian do not show. With any of the solutions, it
looks like we should remain dry on Wednesday. A large upper level
trough is expected to move toward the plains late week. Given the
different model solutions, for now have decided to just place
20-30 percent pops in for next Thursday.

58

Preliminary point temps pops
Dallas-ft. Worth 46 30 55 46 69 0 0 0 10 10
waco 44 27 52 44 67 0 0 5 20 10
paris 43 25 50 40 63 0 0 0 30 30
denton 46 26 57 45 69 0 0 0 10 5
mckinney 44 27 53 44 67 0 0 0 20 10
dallas 46 31 54 46 68 0 0 0 20 10
terrell 44 26 51 44 66 0 0 0 30 20
corsicana 44 28 48 44 67 0 0 5 30 20
temple 44 28 51 44 68 0 0 10 20 10
mineral wells 48 27 60 42 72 0 0 0 5 5

Fwd watches warnings advisories
None.

25 58


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Dallas/Fort Worth International Airport, TX4 mi47 minS 710.00 miFair19°F10°F68%1033.6 hPa
Dallas / Addison Airport, TX13 mi53 minS 313.00 miClear21°F12°F68%1034.2 hPa
Fort Worth, Fort Worth Alliance Airport, TX13 mi47 minN 010.00 miFair16°F10°F77%1035 hPa
Dallas Love Field, TX14 mi47 minS 310.00 miFair23°F10°F60%1034.5 hPa
Fort Worth, Meacham International Airport, TX17 mi47 minS 310.00 miFair20°F10°F68%1034.1 hPa
Denton Enterprise Airport, TX17 mi47 minN 010.00 miFair12°F6°F77%1034.1 hPa
Grand Prairie, Grand Prairie Municipal Airport, TX18 mi45 minS 310.00 miFair19°F10°F67%1034.5 hPa
Fort Worth, Naval Air Station, TX20 mi1.8 hrsSSE 49.00 miFair20°F8°F60%1031.6 hPa
Arlington Municipal Airport, TX20 mi47 minN 010.00 miFair10°F7°F87%1034.6 hPa
Dallas, Redbird Airport, TX22 mi47 minS 410.00 miFair21°F10°F62%1033.9 hPa

Wind History from DFW (wind in knots)
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Last 24hrCalmCalmS3CalmNE4333S3CalmCalmCalmSE7S5S6S7S7S4CalmS4S6S6SW5S7
1 day agoN16N15N13N13N11N13
G20
N16
G20
N16
G23
N16
G20
N15N14N10N12N10N7NE8NE6NE5N3N6NW5N6NE4Calm
2 days agoS8S11S12S10S7S11SW10S7N20
G29
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G34
N20
G31
N24
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N25
G31
N22
G28
N17
G24
N16
G26
N23N21N18
G22
N17
G24
N17N20
G24
N20

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
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IR Satellite Image from GEOS
east_satellite

GOES Local Image of SouthCentralPlains    EDIT
Geos

Wind Forecast for Fort Worth, TX (8,2,3,4)
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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.