Thursday, March23, 2017 L-36.com


Marine Weather and Tides
Lewisville, TX

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:24AMSunset 7:43PM Thursday March 23, 2017 5:06 PM CDT (22:06 UTC) Moonrise 3:31AMMoonset 2:23PM Illumination 14% Phase: Waning Crescent; Moon at 26 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 Lewisville, TX
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location: 33.08, -96.96     debug


Area Discussion for - Fort Worth, TX
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Fxus64 kfwd 232020
afdfwd
area forecast discussion
national weather service fort worth tx
320 pm cdt Thu mar 23 2017

Discussion
The current upper level pattern is defined mainly by an upper
level ridge near the ms valley and an upper trough over the four-
corners region. At the surface, a strengthening lee-side cyclone
will keep the tight pressure gradient going, and the resulting
strong south winds should persist well into the evening. The wind
advisory will remain valid through 06z tonight, and the evening
and overnight shifts can take a look at the possibility of
issuing another advisory if conditions look right tomorrow. At
this time, things look a little too borderline to issue this
early.

The strong south winds are advecting moisture northward across the
forecast area in advance of the storm system to our west. Surface
heating and strong dynamic forcing will generate convection later this
afternoon over the tx panhandle and west-central texas. Activity
will likely be focused along a dryline, which will be forced
eastward as the upper trough moves east. Storms may initially
become severe, but will likely lose some of their intensity while
entering our west counties due to the lack of any appreciable
instability (mainly the result of the time of day). Still, some
gusty winds may occur (probably not any gustier than our wind
advisory winds from today) along with some occasional cloud to
ground lightning.

Showers and storms will cross the i-35 corridor pretty close to
Friday morning rush hour, and then begin to intensify while
moving into a more favorable convective environment across the
eastern third of the area. Damaging winds and hail will be the
primary threat Friday afternoon, mainly for areas along and east
of i-45/hwy 75.

Precipitation will work its way east of the forecast area Friday
evening, with cooler and drier air spreading in behind the dryline
and pacific cold front. The primary concern across the western
portion of the forecast area will again be fire danger, which
will be near critical levels due to the warm, dry and windy
conditions. The fire weather watch has been expanded to include
areas generally along and west of a line from gainesville to
granbury to comanche. If conditions continue to look ideal for
rapidly spreading wildfires, a red flag warning may eventually be
issued.

A fast-moving shortwave trough will cross the southern plains on
Sunday, bringing a quick round of convection to parts of the
region. The best mid-level lapse rates and moisture will exist
over the northeastern counties, which is where pops will be
highest. Rain chances will be mainly Sunday night, and will
decrease the farther southwest you go.

A brief period of shortwave ridging aloft will bring nice weather
to the area late Monday and Tuesday. A slower-moving and deeper
upper low is then progged to cross the desert southwest Wednesday
and into west-central texas Wednesday night. This system has the
potential to bring some much needed and more widespread rainfall
as it taps into deep gulf moisture. Depending on how much
instability and shear we can muster, there may also be some
windows for severe weather. But it's still a bit too early to rely
on convective parameters which may change from model run to model
run. Either way it looks like we are in for a fairly active and
progressive pattern for the next week.

30

Aviation
/issued 1244 pm cdt Thu mar 23 2017/
vfr through this evening with only a few CU expected this
afternoon. A deep surface low centered over eastern colorado will
result in a strong and gusty south wind through the afternoon at
speeds between 20 and 25 knots sustained along with gusts around
30 knots. The wind will decrease a bit after sunset but remain
gusty.

MVFR ceilings will develop overnight ahead of an approaching low
pressure system. The low ceilings should reach waco around 06z and
the metroplex TAF sites around 08z.

An upper level low and associated dryline will move east across
the state tonight and reach the interstate 35 corridor between 12
and 16z. MVFR ceilings will lift and scatter quickly behind the
dryline. A few showers will accompany the dryline, but the
atmosphere should be sufficiently capped to limit/prevent
thunderstorm development until later in the day Friday. By the
time storms do develop, the dryline will be east of the TAF sites
and will only have impacts to the eastern cornerposts.

Vfr conditions are expected from mid morning Friday through Friday
afternoon with a southwest wind between 15 and 20 knots along with
some higher gusts.

79

Preliminary point temps/pops
Dallas-ft. Worth 63 81 55 76 55 / 30 50 5 0 0
waco 65 80 52 78 54 / 30 60 5 0 0
paris 61 72 52 72 51 / 10 70 20 5 0
denton 63 81 51 75 52 / 40 40 5 0 0
mckinney 64 76 52 73 51 / 30 60 5 0 0
dallas 65 79 55 75 55 / 30 60 5 0 0
terrell 63 74 53 74 53 / 20 60 10 0 0
corsicana 64 74 55 75 54 / 20 70 10 0 0
temple 63 79 52 79 55 / 30 60 5 0 0
mineral wells 59 82 49 75 53 / 40 20 5 0 0

Fwd watches/warnings/advisories
Fire weather watch from Friday morning through Friday afternoon
for txz091-092-100>102-115>117-129>131-141.

Wind advisory until 1 am cdt Friday for txz091>094-100>104-
115>120-129>134-141>145-156>160-174.

79/30


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Dallas / Addison Airport, TX10 mi71 minS 19 G 3413.00 miClear and Breezy82°F48°F30%1013.5 hPa
Dallas/Fort Worth International Airport, TX12 mi73 minS 27 G 3410.00 miA Few Clouds and Windy86°F51°F30%1011.6 hPa
Denton Municipal Airport, TX14 mi73 minS 25 G 3210.00 miFair and Windy84°F51°F32%1012 hPa
Dallas Love Field, TX16 mi73 minS 19 G 2710.00 miA Few Clouds and Breezy86°F50°F29%1012.8 hPa
Fort Worth, Fort Worth Alliance Airport, TX20 mi73 minS 23 G 3410.00 miA Few Clouds and Windy85°F48°F29%1010.8 hPa
McKinney - McKinney National Airport, TX21 mi73 minS 23 G 3310.00 miFair and Windy83°F52°F34%1013 hPa

Wind History from ADS (wind in knots)
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Last 24hrSE11
G22
SE12
G22
SE15
G22
--SE8
G14
SE9SE12
G15
SE9SE12S8S8S8S7S12
G18
S14
G25
S14
G25
S14
G25
S10
G26
SE16
G25
S17
G27
S20
G29
S22
G37
S19
G34
S22
G34
1 day agoS8
G16
SE14
G21
S13
G18
SE7--S9S7
G14
S9S6S6S6S8S5SE7SE7S9S7S7S7SE6
G15
SE8
G17
--S8
G16
SE15
G18
2 days agoS11
G25
S15
G22
--S11
G20
S12
G25
S9
G16
S10
G16
S9
G17
S7S3S9
G17
S10
G16
S8
G15
S10
G14
S9
G13
S8
G13
S10
G16
S10
G14
S14
G19
S11
G18
S18
G23
S16
G22
SE17
G22
S15
G23

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 (18,4,5,8)
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Ground Weather Radar Station Dallas/Fort Worth, TX
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weather_mapweather_map weather_map

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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.