Wednesday, October16, 2019 L-36.com


Marine Weather and Tides
Bolivar Peninsula, TX

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:19AMSunset 6:49PM Wednesday October 16, 2019 7:05 AM CDT (12:05 UTC) Moonrise 7:51PMMoonset 8:43AM Illumination 92% Phase: Waning Gibbous; Moon at 17 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- 505 Am Cdt Wed Oct 16 2019
.small craft should exercise caution tonight...
Today..North winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of Thunderstorms early in the morning. Showers likely in the morning, then isolated showers in the afternoon.
Tonight..Northeast winds 10 to 15 knots increasing to 15 to 20 knots and gusty. Bay waters slightly choppy to choppy.
Thursday..Northeast winds 10 to 15 knots. Bay waters slightly choppy.
Thursday night..East winds around 10 knots. Bay waters smooth to slightly choppy. Isolated showers after midnight.
Friday..Northeast winds 10 to 15 knots. Bay waters slightly choppy. Isolated showers and Thunderstorms.
Friday night..East winds 5 to 10 knots. Bay waters smooth. Isolated Thunderstorms in the evening. Isolated showers.
Saturday..North winds around 5 knots becoming south in the afternoon. Bay waters smooth.
Saturday night..South winds 5 to 10 knots. Bay waters smooth. Isolated showers after midnight.
Sunday..South winds 5 to 10 knots. Bay waters smooth. Scattered showers and isolated Thunderstorms.
Sunday night..South winds 10 to 15 knots. Bay waters slightly choppy. Isolated showers in the evening. Isolated Thunderstorms. Scattered showers after midnight.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 505 Am Cdt Wed Oct 16 2019
Synopsis for high island to matagorda ship channel out 60 nm.. A cold over southeast texas early this morning will move off the coast near Sunrise and bring increasing northerly winds. Moderate to strong offshore winds late this afternoon and evening will build seas and small craft advisories will be in effect tonight. Showers and Thunderstorms will accompany the front and may linger well offshore into this evening. An area of disturbed weather that may take on tropical characteristics could move through the southwestern and central gulf towards the new orleans area Friday into Saturday afternoon this would increase rain chances and winds as it passes by to the southeast. Southerly flow Sunday will probably tap into deeper moisture and could bring a round of showers and Thunderstorms late Sunday. Another cold front should arrive on Monday.


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


Area Discussion for - Houston/Galveston, TX
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Fxus64 khgx 161034
afdhgx
area forecast discussion
national weather service houston galveston tx
534 am cdt Wed oct 16 2019

Short term [today through tomorrow night]
Cold front is currently making its way to the coast this morning
with somewhat spotty coverage along it so far. This front is ex-
pected to move off the coast by 12z 7am and we could see another
burst of development as it moves through the coastal waters this
afternoon. Cooler drier weather on tap for tonight and tomorrow.

Overnight lows progged to fall into the 50s inland and lower mid
60s at the coast. However, we may not see a lot of the mid upper
level clouds clear until fri. A trailing upper low (left way be-
hind the main upper trof) over wtx is expected to meander to the
east (towards SE tx) by thurs... Drawing abundant moisture clouds
across from the pacific over the area. Not expecting much by way
of precipitation with this pattern, but given the shallow nature
of the cool airmass, especially along the coast, wouldn't be too
surprised if there were a few spits here and there. Temperatures
tomorrow may be a category cooler than currently in the grids if
these clouds do verify. 41

Long term [Friday through Tuesday]
Clearing skies and slightly warming temperatures on tap starting
fri on into the weekend. Light winds with perhaps a very weak re-
inforcing shot of dry air on Sat could make for a quiet few days.

Models TPC are still monitoring the possibility of something dev-
eloping in the bay of campeche around this time, but the progged
flow aloft should keep its track away from SE tx.

Rain chances are set to return to the CWA by Sun afternoon as the
onshore flow strengthens a bit in response to the next upper sys-
tem moving off the rockies. This next upper trof looks rather im-
pressive as it deepens over the central plains on Sun night... And
drags a strong cold front into SE tx on mon. 41

Marine
Cold front pushing off the coast will bring showers and
thunderstorms to the upper texas coastal waters this morning.

Northerly winds strengthening through the afternoon with sca
conditions developing late this afternoon or more likely early this
evening and persisting through most of the night relaxing slightly
Thursday morning. A tropical disturbance may move from the bay of
campeche Friday northeast towards the new orleans area Saturday or
Saturday night. This may bump up winds and seas depending on the
level of organization it acquires. Another cold front should arrive
on Monday with SCA conditions in it's wake.

45

Aviation
Ifr ceilings north near the cold front - lfk-uts-cll line - pushing
steadily southward. Cluster of showers and thunderstorms moving
through the houston terminals at 10z and should be out of these by
12z with the trend for these to weaken as they move east-southeast
with impacts to lbx gls psx areas 11-14z. Ceilings in the wake of
the storms and the front should fluctuate between 800-1600ft with a
slow rising trend to the ceilings through 15z then steady out with
MVFR ceilings through 15-17z north and 17-20z iah hou and lastly 20-
01z for the lbx gls terminals. Winds should become gusty northerly
with the arrival of the front and may gust as high as 25 knots.VFR
conditions taking hold across the entire area by 01z. Upper level
low is still west of the area and may be dealing with mid upper
level cloudiness through Thursday. Potential tropical disturbance in
the gulf Friday could bring back clouds precip to the coastal areas
Friday with potential for brief MVFR conditions near the coast and
patchy fog well inland Saturday morning.

45

Climate
Yesterday was a hot one with numerous records set. Record high mins
tied or broken at cll iah hou gls some were long standing records.

Record high tied at iah. No records should be in jeopardy today or
for that matter through the weekend.

45

Preliminary point temps pops
College station (cll) 72 53 73 54 81 10 0 10 10 10
houston (iah) 75 58 73 58 80 50 10 10 10 20
galveston (gls) 79 65 74 68 80 80 10 10 20 30

Hgx watches warnings advisories
Tx... None.

Gm... Small craft should exercise caution from this evening through
late tonight for the following zones: galveston bay...

matagorda bay.

Small craft advisory from 6 pm this evening to 3 am cdt Thursday
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.

Small craft advisory from 6 pm this evening to 8 am cdt Thursday
for the following zones: 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 mi48 min NE 17 G 21 73°F 78°F1013.6 hPa
HIST2 12 mi54 min N 11 G 14 72°F 77°F1012.7 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 13 mi54 min NNW 18 G 27 75°F 78°F1012.2 hPa
GTOT2 17 mi54 min N 8.9 G 13 77°F 78°F1013.1 hPa
42035 - GALVESTON 22NM East of Galveston, TX 19 mi36 min N 3.9 G 5.8 83°F 1013.6 hPa80°F
EPTT2 - 8771013 - Eagle Point, TX 19 mi54 min N 12 G 17 71°F 75°F1013.2 hPa
GRRT2 22 mi54 min N 7 G 9.9 77°F 77°F1012.6 hPa
KXIH 22 mi31 min NW 4.1 81°F 79°F
MGPT2 - 8770613 - Morgans Point, TX 26 mi54 min WNW 9.9 G 13 72°F 79°F1014 hPa
SRST2 - Sabine Pass, TX 31 mi126 min N 12 G 15 74°F 1012.8 hPa (+0.5)73°F
SBPT2 - 8770570 - Sabine Pass North, TX 40 mi54 min N 11 G 15 71°F 79°F1015.4 hPa
TXPT2 40 mi48 min N 14 G 17 70°F 78°F1012.4 hPa
LUIT2 41 mi48 min NNW 8.9 G 11 77°F 79°F1014 hPa
NCHT2 - 8770777 - Manchester, TX 41 mi54 min NE 1.9 G 2.9 72°F 80°F1013 hPa
PORT2 - 8770475 - Port Arthur, TX 42 mi54 min NNW 9.9 G 14 72°F 78°F1014 hPa

Wind History for Rollover Pass, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
High Island 179A (Apache Corp), LA22 mi11 minN 273.00 miFog/Mist and Windy75°F71°F89%1012.5 hPa
Galveston, Scholes Field, TX22 mi14 minN 18 G 259.00 miLight Rain and Breezy74°F72°F94%1014.2 hPa

Link to 5 minute data for KGLS

Wind History from GLS (wind in knots)
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Last 24hrS5S8S9S9S10S12S11S11S10S10S10S10SW6S7S8S5S7SW5S6SW7CalmN3NW4N18
G25
1 day agoNE8E6E44E3SE6W5S3SE7SE7SE9SE5SE7E9E7SE7SE6SE6S7S7S7S8S6S7
2 days agoN10N8N8N8N9N10N9N10NE7E8E8E8E7E10E9E11E10E9E10E9E7SE8SE8N4

Tide / Current Tables for Rollover Pass, Texas
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Galveston Bay Entrance, Texas Current
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Galveston Bay Entrance
Click for Map
Wed -- 12:38 AM CDT     -0.49 knots Max Ebb
Wed -- 05:15 AM CDT     -0.23 knots Min Ebb
Wed -- 07:20 AM CDT     Sunrise
Wed -- 09:43 AM CDT     Moonset
Wed -- 10:41 AM CDT     -2.01 knots Max Ebb
Wed -- 03:13 PM CDT     0.00 knots Slack
Wed -- 06:47 PM CDT     Sunset
Wed -- 06:58 PM CDT     1.72 knots Max Flood
Wed -- 08:51 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.5-0.4-0.3-0.3-0.2-0.3-0.6-1.2-1.7-2-2-1.8-1.4-0.8-0.10.511.51.71.51.10.70.4

Weather Map
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wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Houston/Galveston, TX (8,2,3,4)
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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.