Wednesday, February20, 2019 L-36.com


Marine Weather and Tides
Bolivar Peninsula, TX

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 6:52AMSunset 6:13PM Wednesday February 20, 2019 11:39 AM CST (17:39 UTC) Moonrise 7:38PMMoonset 7:49AM Illumination 98% 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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GMZ335 Galveston Bay- 946 Am Cst Wed Feb 20 2019
This afternoon..Northwest winds 10 to 15 knots becoming north 5 to 10 knots. Bay waters smooth to slightly choppy.
Tonight..Northeast winds 5 to 10 knots. Bay waters smooth. A chance of showers.
Thursday..Northeast winds 10 to 15 knots. Bay waters slightly choppy. Showers likely in the morning. Isolated Thunderstorms. A chance of showers in the afternoon.
Thursday night..Northeast winds 5 to 10 knots becoming east after midnight. Bay waters smooth. Showers likely and isolated Thunderstorms.
Friday..Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Bay waters smooth becoming slightly choppy in the afternoon. A chance of showers and isolated Thunderstorms.
Friday night..South winds 10 to 15 knots. Bay waters slightly choppy. Patchy fog. A chance of showers and isolated Thunderstorms.
Saturday..Southwest winds around 15 knots becoming west in the afternoon. Bay waters slightly choppy to choppy becoming slightly choppy in the afternoon. Patchy fog in the morning. Showers likely and isolated Thunderstorms.
Saturday night..Northwest winds 5 to 10 knots becoming north after midnight. Bay waters smooth.
Sunday..Northeast winds 5 to 10 knots. Bay waters smooth.
Sunday night..East winds 5 to 10 knots increasing to 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight. A slight chance of showers.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 946 Am Cst Wed Feb 20 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Northwest to north winds will prevail today in the wake of a cold front. Winds will veer to the northeast on Thursday as another coastal low develops off the south texas coast. Chances of fog return as early as Thursday night and will linger on through Saturday afternoon.


7 Day Forecast for Marine Location Near Bolivar Peninsula, TX
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location: 29.49, -94.56     debug


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 201614
afdhgx
area forecast discussion
national weather service houston galveston tx
1014 am cst Wed feb 20 2019

Discussion
Skies will continue to clear from the west to east through the
rest of the day as high pressure builds in from the west. Cur-
rent grids looks good and no major changes are planned at this
time. 41

Prev discussion issued 502 am cst Wed feb 20 2019
overcast skies and lingering light showers prevailed particularly
across the central and southern portions of the forecast area as
a cold front moved across the region overnight and early this
morning.

Area of high pressure and drier air will move into the the area
during the morning and afternoon hours, limiting shower activity.

However, model guidance shows low level moisture returning to the
region this evening as the high pressure quickly moves
northeastward and another surface low pressure develops over the
western gulf of mexico. Expect shower activity to return across
the gulf waters and coastal regions tonight expanding further
inland overnight.

The surface low is expected to move towards the lower tx coast
overnight. Ahead of the low, associated warm front will gradually
move northward and into the local waters Thursday afternoon and
then inland Thursday night through Friday morning, increasing low
level moisture and instability. This will ramp up shower and
thunderstorm development across SE tx. Moreover, another upper
level trough will build across the rockies Thursday night though
Friday. As the surface low moves further northward, southerly flow
will continue to transport warm moist air across the region
Friday afternoon through early Saturday morning, maintaining the
wet and unstable weather pattern. The cold front associated to the
upper level trough will then move across SE tx Saturday
morning afternoon with drier air trailing behind it and
encompassing the local area Saturday evening night. By Monday and
Tuesday, low level moisture will once again increase, as another
surface low pressure moves across the lower tx coast and into the
local coastal waters. Expect another round of showers Monday and
Tuesday.

High temperatures will be mainly between the low to upper 60s
except Friday and Saturday were highs will range between the upper
60s to the mid 70s due to the warm moist air mass in place. Low
temperatures should range between the low 40s to upper 50s
everyday expect Friday night were lows will be up in the low to
upper 60s. Also, due to surface lows and upper level troughs
moving in and out of the region, wind direction and speed will
continue to fluctuate throughout the forecast period. 24

Preliminary point temps pops
College station (cll) 62 43 57 52 70 0 20 40 50 70
houston (iah) 65 49 58 55 75 20 40 70 60 70
galveston (gls) 63 56 64 61 71 40 60 70 50 40

Hgx watches warnings advisories
Tx... None.

Gm... Small craft should exercise caution until 11 am cst this morning
for the following zones: coastal waters from freeport to
matagorda ship channel tx out 20 nm... Coastal waters from
high island to freeport tx out 20 nm... Waters from freeport
to matagorda ship channel tx from 20 to 60 nm... Waters from
high island to freeport tx from 20 to 60 nm.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RLOT2 - 8770971 - Rollover Pass, TX 3 mi39 min N 11 G 12 50°F 55°F1016.1 hPa (+2.3)
HIST2 12 mi39 min NNW 11 G 15 49°F 56°F1015.9 hPa (+2.0)
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 13 mi45 min N 14 G 16 49°F 56°F1015.7 hPa
GTOT2 17 mi39 min N 11 G 13 49°F 56°F1016.1 hPa (+2.6)
42035 - GALVESTON 22NM East of Galveston, TX 19 mi29 min N 16 G 19 51°F 61°F1016.5 hPa51°F
EPTT2 - 8771013 - Eagle Point, TX 19 mi39 min N 8 G 12 49°F 57°F1016.4 hPa (+2.1)
GRRT2 22 mi39 min N 12 G 15 50°F 55°F1016.3 hPa (+2.3)
MGPT2 - 8770613 - Morgans Point, TX 26 mi39 min NW 8.9 G 12 49°F 57°F1016.4 hPa (+1.9)
SRST2 - Sabine Pass, TX 31 mi39 min NNW 15 G 17 49°F 1015.6 hPa (+1.9)46°F
42043 - GA-252 TABS B 39 mi129 min N 14 G 18 59°F1015.8 hPa
SBPT2 - 8770570 - Sabine Pass North, TX 40 mi39 min N 11 G 16 51°F 59°F1017.1 hPa (+1.9)
TXPT2 40 mi39 min N 16 G 19 49°F 56°F1014.9 hPa (+2.0)
LUIT2 41 mi39 min N 11 G 14 50°F 1016.1 hPa (+2.3)
NCHT2 - 8770777 - Manchester, TX 41 mi39 min NNW 6 G 8 51°F 64°F1016.2 hPa (+1.9)
PORT2 - 8770475 - Port Arthur, TX 42 mi39 min NNW 9.9 G 13 49°F 57°F1015.9 hPa (+1.7)
KVBS 49 mi19 min NNE 16 52°F 48°F

Wind History for Rollover Pass, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Galveston, Scholes Field, TX22 mi47 minN 1410.00 miOvercast51°F45°F80%1016.3 hPa

Wind History from GLS (wind in knots)
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Last 24hrNE15NE15NE12E14
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E13N10N10N9N14N12N11N9N11NW7NW9NW15
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2 days agoN14N18N23
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Tide / Current Tables for Gilchrist, East Bay, Texas
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Gilchrist
Click for Map
Wed -- 02:27 AM CST     0.56 feet Low Tide
Wed -- 06:36 AM CST     0.94 feet High Tide
Wed -- 06:52 AM CST     Sunrise
Wed -- 07:47 AM CST     Moonset
Wed -- 02:55 PM CST     -0.55 feet Low Tide
Wed -- 06:10 PM CST     Sunset
Wed -- 07:37 PM CST     Moonrise
Wed -- 09:08 PM CST     0.86 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.60.60.60.70.80.90.90.90.70.40.2-0.1-0.4-0.5-0.5-0.4-0.20.10.50.80.90.80.7

Tide / Current Tables for Galveston Bay Entrance, Texas Current
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Galveston Bay Entrance
Click for Map
Wed -- 12:10 AM CST     0.00 knots Slack
Wed -- 03:22 AM CST     0.72 knots Max Flood
Wed -- 05:05 AM CST     -0.00 knots Slack
Wed -- 06:53 AM CST     Sunrise
Wed -- 07:48 AM CST     Moonset
Wed -- 09:56 AM CST     -3.20 knots Max Ebb
Wed -- 02:12 PM CST     0.00 knots Slack
Wed -- 05:04 PM CST     2.06 knots Max Flood
Wed -- 06:11 PM CST     Sunset
Wed -- 07:38 PM CST     Moonrise
Wed -- 09:29 PM CST     -0.00 knots Slack
Wed -- 11:11 PM CST     -0.45 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-00.20.50.70.60.1-0.8-1.7-2.5-3-3.2-2.9-2.2-1.3-0.20.81.72.11.91.30.80.2-0.2-0.4

Weather Map and Satellite Images
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wmap_A
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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Wind Forecast for Houston/Galveston, TX (12,3,4,5)
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Ground Weather Radar Station Houston/Galveston, TX
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Gulf Stream Current


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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.