Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Manvel, TX

Version 3.4
NOTICE
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 6:52AMSunset 7:57PM Wednesday August 21, 2019 7:33 PM CDT (00:33 UTC) Moonrise 10:41PMMoonset 11:05AM Illumination 61% Phase: Waning Gibbous; Moon at 21 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 Galveston Bay- 333 Pm Cdt Wed Aug 21 2019
Tonight..South winds 5 to 10 knots. Bay waters smooth.
Thursday..Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Thursday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Friday..Southeast winds 5 to 10 knots. Bay waters smooth. Showers and Thunderstorms likely.
Friday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Saturday..South winds 5 to 10 knots. Bay waters smooth. Showers and Thunderstorms likely.
Saturday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Sunday..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Sunday night..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Monday..South winds 5 to 10 knots. Bay waters smooth. A chance of showers and Thunderstorms.
Monday night..South winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 333 Pm Cdt Wed Aug 21 2019
Synopsis for high island to matagorda ship channel out 60 nm.. Light to moderate onshore flow will continue over the next few days, with slightly higher wind speeds during the overnight hours. There is a possibility of isolated to scattered showers and Thunderstorms over the next couple of days with increased chances on Friday and into the weekend. Winds and seas slightly increase during this timeframe as a surge of tropical moisture from the northwestern caribbean enters the northern gulf. No tropical development is expected from this system. Onshore flow continues for the start of next week as an upper level ridge remains over texas.


7 Day Forecast for Marine Location Near Manvel, TX
   Hourly   EDIT   Help
location: 29.47, -95.39     debug


Area Discussion for - Houston/Galveston, TX
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus64 khgx 220013
afdhgx
area forecast discussion
national weather service houston galveston tx
713 pm cdt Wed aug 21 2019

Aviation [00z TAF issuance]
Isolated widely scattered convection that formed earlier today has
all but dissipated at this time. A few straggling showers are try-
ing to move in from the NE at present, but these probably will not
last too much longer. The rest of tonight should be quiet withVFR
conditions prevailing. Otherwise... Not going with a lot of changes
from previous TAF trends as we remain in the same pattern of these
last few several days. Activity over the coastal waters during the
very early morning hours will be moving inland by the afternoon...

with development fueled by daytime heating and the seabreeze. Once
again, things to quiet considerably by thurs evening. 41

Prev discussion issued 352 pm cdt Wed aug 21 2019
short term [this afternoon through Thursday]...

showers and isolated thunderstorms are currently developing mainly
south of i-10 and east of i-45, and are expected to gradually move
north to northeast as the afternoon progresses. This activity is
expected to dissipate by the evening with the loss of heating. For
tonight, expect clear to partly cloudy skies with low temperatures
ranging in the mid 70s to low 80s. Passing showers are possible over
the gulf waters late tonight to early Thursday morning, and could
move into the coastline from time to time.

Thursday, light southerly wind flow and high temperatures ranging in
the low to upper 90s expected. Mid to upper level ridge will start
to retreat to the west, decreasing subsidence across southeast
texas, as an upper level trough moves across the great lakes region.

Deep low level moisture is expected to begin to move into the
region, but should remain mainly along the gulf waters and southern
counties throughout the day. Data shows pwat values between 2.00 to
2.25 inches lingering across the aforementioned areas starting
Thursday morning through Thursday evening. Elsewhere, pwat values of
1.40 to 1.90 inches expected. With the ridge further west and low
level moisture gradually increasing across the gulf and southern
regions, expect showers over the gulf waters and coastal regions in
the morning, followed by showers and thunderstorms developing across
the southern and central regions during the late morning and
afternoon hours. Most of the activity is expected to dissipate in
the evening. However, showers and thunderstorms are expected to
continue over the local waters... Occansionally moving into the
coastal areas throughout the night. Low temperatures will remain
in the mid 70s to low 80s. 24
long term [Friday through Tuesday]...

chances of shower and thunderstorms activity will increase
Friday. Mid to upper level trough will slowly move across the
great lakes region and the ridge will remain west of texas Friday.

Deep low level moisture will continue to filter into the gulf
water and southern regions of southeast texas, moving further
north as the day progresses. Pwat values between 1.70 and 2.30
inches should encompass the region by Friday afternoon,
particularly along the southern and central regions. Pwat values
of 2.20 to 2.50 inches is expected to remain mainly over the gulf
waters. Expect shower and thunderstorm activity to continue over
the gulf waters and southern portions of southeast texas early
Friday morning. As the day progresses, shower and thunderstorm
coverage and intensity will increase and expand further inland.

Strong storms will be capable of producing periods of heavy
rainfall, frequent lightning and gusty winds. The heavy rainfall
could lead to ponding of water along roadways and areas of poor
drainage as well as reduced visibility.

For the upcoming weekend, a similar pattern looks to set up with
the deep low level moisture lingering over the gulf waters as well
as the southern and central regions. Additionally, an upper level
disturbance or shortwave will move eastward across central conus
and north of texas Saturday, elongating southward into the eastern
tx and la region Sunday. On Monday and Tuesday, low level
moisture is expected to decrease, however, the proximity of the
upper level trough could continue to enhance shower and
thunderstorm activity across southeast texas, mainly in the
afternoons. Expect periods of showers and thunderstorms along the
gulf waters and southern and central regions throughout the day,
with lighter activity developing over the northern regions. At
nighttime, activity is expected to dissipate inland and persist
mainly over the waters and coastal regions. High temperatures will
range in the mid to upper 90s north of i-10 and in the low to mid
90s south of i-10 each day. Low temperatures will range in the
mid 70s to low 80s. A southerly wind flow is expected to prevail
throughout the forecast period. 24

Preliminary point temps pops
College station (cll) 76 99 76 97 76 0 10 20 30 10
houston (iah) 78 95 78 93 78 10 20 40 60 30
galveston (gls) 83 91 82 89 82 10 40 60 70 60

Hgx watches warnings advisories
Tx... None.

Gm... None.



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
NCHT2 - 8770777 - Manchester, TX 19 mi46 min S 6 G 11 89°F 89°F1013.5 hPa
EPTT2 - 8771013 - Eagle Point, TX 25 mi46 min SSE 9.9 G 12 1013.8 hPa
MGPT2 - 8770613 - Morgans Point, TX 26 mi46 min SSE 9.9 G 14 1014.4 hPa
GRRT2 29 mi46 min S 7 G 9.9 1014.2 hPa
LUIT2 31 mi46 min SSE 7 G 12 87°F 89°F1014.5 hPa
GTOT2 34 mi46 min SSE 4.1 G 7 89°F 90°F1014.6 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 36 mi58 min SSE 9.9 G 12 87°F 90°F1013.8 hPa
FCGT2 - 8772447 - USCG Freeport, TX 37 mi46 min SE 11 G 13 1015 hPa
FPST2 37 mi46 min SE 12 G 13 86°F 86°F1014.3 hPa
42043 - GA-252 TABS B 43 mi94 min SE 7.8 G 12 88°F1014.5 hPa (-1.3)
RLOT2 - 8770971 - Rollover Pass, TX 47 mi46 min S 8 G 9.9 87°F 92°F1015.1 hPa

Wind History for Eagle 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
S9
S8
S10
S9
S7
S10
S9
S8
S8
SW5
SW3
SW4
SW7
SW7
G10
SE3
SE7
SE1
G4
SW11
G14
S8
S11
SE6
SE12
S12
1 day
ago
S13
S10
S10
S10
S10
SW6
SW4
SW2
SW5
SW6
G10
W1
NW3
W2
SW3
S2
E4
SE12
SW7
G14
S5
S7
S13
G19
S10
SW6
2 days
ago
S12
S12
S13
S13
S12
S12
S13
S10
G13
S9
SW6
SW6
SW5
SW4
SW7
G10
S11
S13
S12
G16
S13
G17
S13
S13
S13
G16
S14
S13
S13

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston Southwest Airport, TX5 mi59 minN 010.00 miFair88°F73°F64%1014.6 hPa
Houston, Pearland Regional Airport, TX9 mi41 minSSE 810.00 miFair90°F71°F54%1014.7 hPa
Houston, Houston Hobby Airport, TX14 mi41 minSSE 910.00 miPartly Cloudy90°F71°F54%1014.3 hPa
Houston / Ellington, TX16 mi1.7 hrsSSE 1010.00 miShowers in Vicinity90°F71°F55%1014.6 hPa
Houston, Sugar Land Municipal / Hull Field Airport, TX17 mi41 minSSE 610.00 miFair89°F75°F63%1013.9 hPa
John Dunn Helistop, TX17 mi39 minN 08.00 miFair90°F71°F55%1013.9 hPa

Link to 5 minute data for KAXH

Wind History from AXH (wind in knots)
8
PM
9
PM
10
PM
11
PM
-12
PM
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 24hrS3S4------CalmCalm--CalmCalmCalm--CalmCalmS4W3SE3SE7S5W6S4SW4S3SE5
1 day agoS3--Calm--Calm--CalmCalm--CalmCalmCalmCalmCalmCalmW3SE10
G15
S4CalmCalmCalmS5S4S3
2 days agoS3SE5S3CalmCalmCalm--CalmCalmCalmCalmCalmCalmSW4S3S3W8W4SW3SE4SE9
G16
SE5S7
G15
S4

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Clear Lake
Click for Map
Wed -- 02:50 AM CDT     0.54 feet High Tide
Wed -- 06:51 AM CDT     Sunrise
Wed -- 07:44 AM CDT     0.36 feet Low Tide
Wed -- 12:04 PM CDT     Moonset
Wed -- 02:30 PM CDT     0.63 feet High Tide
Wed -- 07:54 PM CDT     Sunset
Wed -- 09:30 PM CDT     0.19 feet Low Tide
Wed -- 11:39 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
10
pm
11
pm
0.40.50.50.50.50.50.40.40.40.40.40.50.50.60.60.60.60.50.40.30.20.20.20.2

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas (2)
   EDIT      (on/off)   Help   One Week of Data
Clear Lake
Click for Map
Wed -- 02:51 AM CDT     0.71 feet High Tide
Wed -- 06:51 AM CDT     Sunrise
Wed -- 08:15 AM CDT     0.52 feet Low Tide
Wed -- 12:04 PM CDT     Moonset
Wed -- 02:15 PM CDT     0.80 feet High Tide
Wed -- 07:54 PM CDT     Sunset
Wed -- 09:31 PM CDT     0.36 feet Low Tide
Wed -- 11:39 PM CDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
10
pm
11
pm
0.60.60.70.70.70.60.60.50.50.50.60.70.70.80.80.80.70.70.60.50.40.40.40.4

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
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.