Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Bolivar Peninsula, 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 6:49AMSunset 7:54PM Sunday August 20, 2017 7:56 PM CDT (00:56 UTC) Moonrise 4:32AMMoonset 6:15PM Illumination 2% Phase: Waning Crescent; Moon at 28 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
    EDIT      (on/off)   Help
GMZ335 Matagorda Bay-galveston Bay- 351 Pm Cdt Sun Aug 20 2017
Tonight..Southeast winds 10 to 15 knots this evening diminishing to 5 to 10 knots overnight. Bay waters smooth to slightly choppy.
Monday through Tuesday night..Southeast winds around 10 knots. Bay waters smooth to slightly choppy. A chance of late night and morning showers and Thunderstorms.
Wednesday..Variable winds around 5 knots becoming southeast in the afternoon. Bay waters smooth. A chance of showers and Thunderstorms.
Wednesday night..South winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and Thunderstorms.
Thursday..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Thursday night..Southeast winds 5 to 10 knots becoming east after midnight. Bay waters smooth. A slight chance of showers and Thunderstorms.
Friday..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Friday night..East winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 351 Pm Cdt Sun Aug 20 2017
Synopsis for high island to matagorda ship channel out 60 nm.. Low seas and a light to moderate onshore flow will continue for the next several days. Scattered late night and morning showers and Thunderstorms can be expected for much of the week..

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


Area Discussion for - Houston/Galveston, TX
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus64 khgx 202112
afdhgx
area forecast discussion
national weather service houston galveston tx
412 pm cdt Sun aug 20 2017

Discussion
Early afternoon coastal convection that flared up over chambers

Galveston and brazoria counties aided in regulating heat
indices to under advisory criteria. Towering CU cbs and their
subsequent cooling rain and outflow(s) kept many ambient
temperatures in the lower 90s and... With dew points in the middle
70s... Allowed heat indices to top out between 100 and 105 f
degrees. Today's near coastal enhanced storm activity a sign of
what we can expect in the coming days. The approach and eventual
stall of broad cyclonic gulf circulation will tap into a greater
than 1.8 inch pw plume creeping in from the east and produce
daytime scattered showers and thunderstorms. The higher chances
for late morning into afternoon tsra activity will be generally
focused along and south of an i-10 highway 59 corridor tomorrow
and Tuesday. Thicker cloud cover and precipitation damp grounds
will have subtle (relative cooling) effects on daytime temperatures.

As dew points will still remain in the middle to upper 70s (mid
to upper 60s within any area lucky enough to experience outflow
air)... Lower to middle 90s maximum temperatures will likely keep
heat indices at or under 105 f. As has been the case the last
couple of days sps versus heat advisories should remain the norm.

The broad western gulf low or inverted trough will come ashore by
early Wednesday. Although upper ridging will generally rule the
synoptic over eastern texas... An approaching southern plains
boundary reaching the red river valley at mid-week may be the
impetus that keeps at least low end pops in place through week's
close. Per weaker winds brought on by upper ridging and it being
late august... Anticipating a more active mid to late work week
sea bay breeze boundary. Either convection and its subsequent
outflow fronts emanating from and along these late am early pm
meso boundaries... Or residual boundaries laying around from
previous day's activity... May interact with this aforementioned
northeastern texas front to produce more widespread northern
county convection on Thursday. Rain chances stay fairly high to
close out the week to account for the above forcing within a
continued heated and very moist late august environment. 31

Tropical
The remnants of harvey... Now a wave over the northwestern caribbean
sea... Is forecast to meander west towards the honduras nicaragua
coastlines. Models do have this feature moving back into the
southern bay of campeche by early Thursday. A brief strengthening
is then forecast with a short jog across the far southern bay of
campeche with a progged landfall over the tampico area Friday. As
of now... There is no immediate concern that harvey will impact
texas or its neighboring waters. 31

Marine
2-3ft seas and a light-moderate onshore flow will continue for the
next several days. Scattered late night and morning showers and
thunderstorms can be expected for much of the week. 47

Preliminary point temps pops
College station (cll) 76 97 75 98 76 10 20 10 20 10
houston (iah) 76 93 77 94 76 10 40 10 40 10
galveston (gls) 84 89 82 90 81 10 30 10 20 10

Hgx watches warnings advisories
Tx... None.

Gm... None.

Discussion... 31 47


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RLOT2 - 8770971 - Rollover Pass, TX 3 mi39 min SE 8 G 9.9 87°F 91°F1015.2 hPa
HIST2 12 mi39 min SE 4.1 G 7 88°F 89°F1015.3 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 13 mi39 min SE 11 G 13
GTOT2 17 mi39 min 87°F 88°F
EPTT2 - 8771013 - Eagle Point, TX 19 mi39 min SE 11 G 14 88°F 92°F1015.1 hPa
42035 - GALVESTON 22NM East of Galveston, TX 19 mi57 min ESE 9.7 G 12 87°F 89°F1 ft1015 hPa (-0.8)76°F
KXIH 22 mi22 min SE 11 86°F 75°F
GRRT2 22 mi39 min ESE 8 G 12 87°F 92°F1015 hPa
MGPT2 - 8770613 - Morgans Point, TX 26 mi39 min ESE 7 G 11 88°F 89°F1015 hPa
SRST2 - Sabine Pass, TX 31 mi57 min SE 6 G 8 86°F 1015.7 hPa (+0.0)76°F
LYBT2 33 mi39 min SE 6 G 13 88°F 88°F1015.1 hPa
TXPT2 40 mi39 min SE 9.9 G 12 86°F 89°F1014.5 hPa
SBPT2 - 8770570 - Sabine Pass North, TX 40 mi39 min SE 8 G 11 87°F 90°F1016.7 hPa
LUIT2 41 mi39 min E 9.9 G 12 87°F
NCHT2 - 8770777 - Manchester, TX 41 mi39 min SSE 6 G 13 88°F 86°F1014 hPa
PORT2 - 8770475 - Port Arthur, TX 42 mi39 min SE 5.1 G 8 86°F 90°F1015.6 hPa

Wind History for Rollover Pass, TX
(wind in knots)    EDIT      (on/off)   Help
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
Last
24hr
S5
G8
S5
G9
S5
G9
S4
G8
S5
G8
SW3
G6
SW4
W3
W2
W2
W2
W2
N3
NW5
NW4
--
SE5
G8
SE3
G7
SE9
NE5
G8
E6
G9
E7
SE8
G11
SE9
1 day
ago
S6
S7
G10
S7
G11
S6
G12
S7
G11
SW6
G9
SW7
SW5
G10
SW4
G8
SW4
W4
W3
W4
W4
W5
G8
W5
G10
W4
SW4
G8
S7
G10
S7
S7
G11
S7
G11
S6
G10
S7
G10
2 days
ago
S6
G10
S5
SW6
S8
S5
G10
S7
G10
S7
G11
SW5
G9
S6
S7
G10
S6
G9
S5
G10
SW4
G7
W4
SW4
G8
SW4
G7
SW7
G10
S6
G9
SW6
G9
S6
G10
S5
G10
S6
G11
S7
G10
S5
G9

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Galveston, Scholes Field, TX22 mi65 minSE 1010.00 miFair87°F75°F67%1015 hPa
High Island 179A (Apache Corp), LA22 mi62 minSE 1010.00 miFair88°F75°F66%1014.9 hPa

Wind History from XIH (wind in knots)
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
Last 24hrS11S10
G15
S8
G15
S9S8
G14
SW10SW11--------------CalmE4E4SE7E6E5SE7SE9SE9SE8
1 day agoS9S14S10
G16
S10S11SW13SW16SW13SW14SW12SW8SW9SW65W5W4NW63CalmCalmS5S7S66
G12
2 days agoSW11S10S6S8
G13
S13S10S9S10SW12SW13SW11SW12SW11SW9SW9SW5SW5SW54SW6SW56S10S11

Tide / Current Tables for Rollover Pass, Texas
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Rollover Pass
Click for Map
Sun -- 12:34 AM CDT     -0.13 feet Low Tide
Sun -- 05:32 AM CDT     Moonrise
Sun -- 06:49 AM CDT     Sunrise
Sun -- 09:00 AM CDT     1.32 feet High Tide
Sun -- 02:20 PM CDT     1.03 feet Low Tide
Sun -- 04:54 PM CDT     1.10 feet High Tide
Sun -- 07:15 PM CDT     Moonset
Sun -- 07:53 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.1-0.1-00.20.50.811.21.31.31.31.21.21.1111.11.11.110.80.60.40.2

Tide / Current Tables for Galveston Bay Entrance, Texas Current
   EDIT      (on/off)   Help   One Week of Data
Galveston Bay Entrance
Click for Map
Sun -- 12:59 AM CDT     0.00 knots Slack
Sun -- 04:09 AM CDT     2.56 knots Max Flood
Sun -- 05:33 AM CDT     Moonrise
Sun -- 06:50 AM CDT     Sunrise
Sun -- 09:42 AM CDT     -0.00 knots Slack
Sun -- 11:10 AM CDT     -0.18 knots Max Ebb
Sun -- 12:44 PM CDT     0.00 knots Slack
Sun -- 02:50 PM CDT     0.50 knots Max Flood
Sun -- 04:17 PM CDT     -0.00 knots Slack
Sun -- 07:15 PM CDT     Moonset
Sun -- 07:53 PM CDT     Sunset
Sun -- 09:31 PM CDT     -3.35 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.301.32.22.62.42.11.50.90.3-0.1-0.2-0.10.10.40.50.2-0.5-1.4-2.2-2.8-3.3-3.3-2.8

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of SouthCentralPlains    EDIT
Geos

Wind Forecast for Houston/Galveston, TX (20,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Houston/Galveston, TX
   (on/off)   Help
weather_mapweather_map weather_map

Gulf Stream Current


Ad by Google

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.