Wednesday, March22, 2017 L-36.com


Marine Weather and Tides
Beach City, 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 7:18AMSunset 7:34PM Wednesday March 22, 2017 7:27 PM CDT (00:27 UTC) Moonrise 2:31AMMoonset 1:26PM Illumination 22% Phase: Waning Crescent; Moon at 25 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- 355 Pm Cdt Wed Mar 22 2017
Tonight..Southeast winds 5 to 10 knots. Bay waters smooth.
Thursday..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Thursday night..Southeast winds 15 to 20 knots. Bay waters choppy.
Friday..South winds 15 to 20 knots. Bay waters choppy. A chance of showers and Thunderstorms.
Friday night..South winds 15 to 20 knots decreasing to 10 to 15 knots after midnight. Bay waters choppy becoming slightly choppy after midnight. Showers and Thunderstorms likely in the evening, then a chance of showers and Thunderstorms after midnight.
Saturday..Southwest winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms in the morning.
Saturday night..South winds 5 to 10 knots. Bay waters smooth.
Sunday..South winds 10 to 15 knots. Bay waters slightly choppy.
Sunday night..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms.
Monday..South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and Thunderstorms.
Monday night..South winds around 10 knots becoming southeast after midnight. Bay waters smooth to slightly choppy.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 355 Pm Cdt Wed Mar 22 2017
Synopsis for high island to matagorda ship channel out 60 nm.. A light to moderate onshore flow will prevail through early Thursday. Onshore winds will strengthen significantly Thursday night and Friday in response to an intensifying area of low pressure over the plains. A cold front will approach the coastal waters on Saturday but the front will stall inland. Onshore winds are expected to prevail through the weekend.

7 Day Forecast for Marine Location Near Beach City, TX
   Hourly   EDIT   Help
location: 29.67, -94.86     debug


Area Discussion for - Houston/Galveston, TX
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus64 khgx 222042
afdhgx
area forecast discussion
national weather service houston/galveston tx
342 pm cdt Wed mar 22 2017

Discussion
Temperatures this afternoon have reached the low/mid 80s for a
nice day in may, I mean march. Dewpoints range from the 50s to
low/mid 60s along the coast so it does not feel completely
horrible outside with the humidity. Winds should decrease enough
overnight to allow for more fog Thursday morning. Thursday
forecast should be a repeat of today with perhaps stronger surface
winds as pressures fall in the lee of the rockies due to the next
approaching upper level trough.

A developing upper level trough is quite evident on water vapor
imagery and upper level analysis just off the coast of california.

Downstream of it over the S rockies and texas, upper level
ridging is keeping conditions warm and dry. This ridge should move
over the region tomorrow as the trough moves east into the desert
sw.

Friday is a day to watch for severe weather. SPC day 3 outlook as
a large area of slight risk over much of SE texas, primarily
north of i-10. Overall this looks reasonable but think 12z
forecast data supports more of a threat over NE texas into the
arklatex Friday afternoon. Closer to SE texas, think the threat
for severe weather will be north of houston mainly from brenham to
cleveland northward for Friday afternoon/evening. The thinking
for a more northern severe weather threat is twofold. First this
looks to be where the best positive vorticity advection will occur
which will help erode the cap. The elevated mixed layer should
advect over the region from the SW albeit not quite as strong as
it could be. That said since surface dewpoints may only be in the
mid 60s which could limit instability. Which is the second reason
for a more northern threat area. Instability will be limited but
likely form along the dry line under the best upper level forcing.

This will be where surface based convection will have the best
chance to realize CAPE and support organized convection. Still the
lack of overall instability and upper level forcing along with
capping south of this line will be limiting factors for severe
weather.

Factors that do support severe weather will be the PVA north of
houston and then very strong shear both 0-6km bulk shear and 0-1km
bulk shear. Model soundings support increasing shear through the
day at all levels which should support deep convection if those
updrafts can tap and realize every bit of cape. With the dryline
approaching from the west, there should be a line of storms,
likely a squall line or qlcs, that moves into the area during the
afternoon. The most recent 12z texas tech wrf-arw supports this
idea quite well. Peak heating will help instability but still may
not be enough if there is not quality low level moisture. As the
qlcs moves into better shear, possible to have a straight line
winds and tornado threat. Hail will be secondary and heavy
rainfall may be brief since storm motions will be high. Activity
should move east Friday evening and out of SE texas by midnight.

Active upper level pattern looks to continue based on latest
gfs/ecmwf/canadian solutions. The dryline/pacific front will
likely stall across the area Saturday and push back north on
Sunday. By Monday another approaching trough will move into the
southern plains Sunday night into Monday. All 3 models have very
different solutions so not going all that high with rain chances.

Rain chances of 20/30 pops look reasonable for now. This again may
be a scenario for severe weather but more likely well north of
the area. Model solutions continue to be very different for the
middle of next week but next Wednesday/Thursday could be active
with thunderstorm activity.

Overpeck

Aviation
Only a few tweaks to the 18z tafs as most of the main ingredients
re- main in place through tomorrow. Did go with MVFR cigs/vis
tonight at most sites given the lighter winds. We should see
conditions improve by mid morning as winds begin to mix down once
again. 41

Marine
Not a lot of changes with the overall forecast through tomorrow with
a generally light/moderate onshore flow remaining in place. However,
we should be seeing some changes tomorrow night as the pressure grad-
ient begins to tighten in response to the next system deepening over
western plains. Sca/scec flags may be needed at this time across the
coastal waters. As this low moves east on sat, it will be dragging a
cold front into the state. Models are keeping this boundary over the
inland portions of SE tx and we will likely maintain s/se winds over
the marine areas over the weekend. Another storm system (perhaps not
as strong) is progged to develop/move off the rockies into the centr-
al plains late sun/mon. Increased wind speeds in response may prompt
sca/scec flags once again at this time. 41

Preliminary point temps/pops
College station (cll) 64 85 66 79 57 / 10 0 10 90 20
houston (iah) 64 84 68 80 66 / 10 0 10 70 60
galveston (gls) 68 79 70 79 70 / 10 0 10 50 50

Hgx watches/warnings/advisories
Tx... None.

Gm... None.

Discussion... 39
aviation/marine... 41


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
MGPT2 - 8770613 - Morgans Point, TX 7 mi39 min SSE 7 G 11 74°F 72°F1019.7 hPa
EPTT2 - 8771013 - Eagle Point, TX 13 mi39 min S 13 G 16 1019.8 hPa
LYBT2 13 mi45 min SE 8.9 G 16 75°F 71°F1018.4 hPa
RLOT2 - 8770971 - Rollover Pass, TX 21 mi39 min S 8 G 11 77°F1020.2 hPa
NCHT2 - 8770777 - Manchester, TX 22 mi39 min S 7 G 14 78°F 72°F1019.2 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 23 mi39 min SSE 9.9 G 12
GTOT2 25 mi39 min 74°F 68°F
HIST2 25 mi39 min S 6 G 8.9 1020.5 hPa
GRRT2 26 mi39 min S 8 G 11 73°F 77°F1020.1 hPa
KXIH 38 mi32 min SSW 8.9 75°F 66°F
42035 - GALVESTON 22NM East of Galveston, TX 38 mi37 min S 9.7 G 12 73°F 73°F2 ft1020.1 hPa (-0.4)68°F
LUIT2 43 mi39 min S 8 G 11 74°F
SRST2 - Sabine Pass, TX 44 mi27 min S 8 G 9.9 72°F 1020.7 hPa (-0.0)69°F

Wind History for Morgans Point, 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
S8
G17
S11
G14
S7
S6
S6
G9
S6
G10
S8
G11
S5
G9
S4
S5
G8
S4
SW3
S4
SE3
SE4
SE3
SE6
E6
G9
E9
G12
SE10
G14
SE8
G13
SE7
G12
SE10
G14
SE8
G12
1 day
ago
S9
G12
S9
G13
S8
G13
S9
S6
G9
S4
S5
S5
G8
S4
S3
G6
S6
SW4
SW3
G6
S7
G11
S8
G11
S7
G11
SE5
SE7
G11
SE6
G11
SE6
G11
SE5
G11
SE8
G13
SE12
S10
G13
2 days
ago
S8
G12
S9
G12
S6
G9
S5
G8
S6
G9
S8
G12
S6
G9
SW5
G8
SW4
G7
S4
G7
S4
S4
S3
S7
S9
G12
S7
G11
S8
G11
S9
S6
G9
S6
G10
SE7
G11
SE11
G16
SE9
G13
S8
G11

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX17 mi37 minSE 1010.00 miA Few Clouds75°F59°F57%1019.6 hPa
Houston, Houston Hobby Airport, TX22 mi34 minSSE 1210.00 miA Few Clouds76°F64°F69%1019.5 hPa
Houston, Pearland Regional Airport, TX23 mi34 minSSE 1010.00 miFair78°F64°F64%1019.8 hPa

Wind History from EFD (wind in knots)
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 24hrS9S7SE4Calm--CalmCalmCalmCalmCalmCalmCalmCalmNE3S2S8CalmCalmCalmS12SE10SE10S11SE10
1 day agoS6S8S6S4S3S3SE3CalmCalmCalm--CalmSE2S4S8S10S7S10S8SW12S10S10S13S10
2 days agoS9S8S6--S5S3Calm----CalmCalmCalmCalmS5S10SW10SW7S10S8SW10S11--S8--

Tide / Current Tables for Point Barrow, Trinity Bay, Texas
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Point Barrow
Click for Map
Wed -- 03:30 AM CDT     Moonrise
Wed -- 07:20 AM CDT     Sunrise
Wed -- 11:25 AM CDT     0.09 feet Low Tide
Wed -- 02:25 PM CDT     Moonset
Wed -- 07:32 PM CDT     Sunset
Wed -- 08:56 PM CDT     0.94 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.80.80.80.80.70.70.60.40.30.10.10.10.10.20.30.50.60.80.90.90.90.90.9

Tide / Current Tables for Bolivar Roads, Texas Current
   EDIT      (on/off)   Help   One Week of Data
Bolivar Roads
Click for Map
Wed -- 03:29 AM CDT     Moonrise
Wed -- 05:51 AM CDT     -1.25 knots Max Ebb
Wed -- 07:20 AM CDT     Sunrise
Wed -- 10:33 AM CDT     0.00 knots Slack
Wed -- 02:25 PM CDT     Moonset
Wed -- 02:46 PM CDT     1.40 knots Max Flood
Wed -- 07:31 PM CDT     Sunset
Wed -- 08:41 PM CDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.9-0.9-0.9-1-1.1-1.2-1.2-1.2-1-0.7-0.30.20.81.11.41.41.31.10.80.60.2-0.1-0.5-0.7

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.