Tuesday, March9, 2021
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Marine Weather and Tides
New Territory, TX

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:37AMSunset 6:28PM Tuesday March 9, 2021 3:50 AM CST (09:50 UTC) Moonrise 4:29AMMoonset 3:00PM Illumination 18% 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
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GMZ335 Galveston Bay- 954 Pm Cst Mon Mar 8 2021
Rest of tonight..Southeast winds 5 to 10 knots. Bay waters smooth.
Tuesday..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Tuesday night..Southeast winds 5 to 10 knots. Bay waters smooth. Patchy fog in the late evening and overnight.
Wednesday..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Wednesday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy. Patchy fog in the late evening and overnight. A slight chance of sprinkles late.
Thursday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of sprinkles in the morning.
Thursday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy. Patchy fog in the late evening and overnight.
Friday..Southeast winds 10 to 15 knots. Bay waters slightly choppy.
Friday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy. Patchy fog in the late evening and overnight. A slight chance of showers late.
Saturday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers.
Saturday night..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers early in the evening, then a chance of showers in the late evening and overnight.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 954 Pm Cst Mon Mar 8 2021
Synopsis for high island to matagorda ship channel out 60 nm.. High pressure over the eastern u.s. And low pressure over the western plains will maintain onshore winds through the end of the week. The onshore flow will strengthen as the low deepens. With dew points increasing as a result of the persistent onshore flow, the possibility of sea fog development will also increase by mid- week.


7 Day Forecast for Marine Location Near New Territory, TX
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location: 29.58, -95.7     debug


Area Discussion for - Houston/Galveston, TX
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FXUS64 KHGX 090430 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 1030 PM CST Mon Mar 8 2021

SHORT TERM [Tonight Through Tuesday]. Moistening of the atmosphere continues with southeasterly flow firmly in place. Expect a warmer night across the region with lows in the 50s to around 60. Nudged up temperatures inland west a degree or two based on current trends and the 00z NAM/RUC. Winds although light continue throughout the night. Clouds a mix of 4000-6000 foot and cirrus overnight.

Dewpoints well offshore already in the upper 50s to lower 60s and this along with the aforementioned NAM indicating a slight increase in the chances for sea fog Wednesday morning near Galveston Bay.

SE winds offshore creeping up and seas have slowly built with longer periods as well. Fluctuating at 5-6 feet looks likely through the night and much of Tuesday so have hoisted a SCEC for the 20-60nm waters.

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AVIATION [06Z TAF Issuance]. VFR most of the forecast. Some SCT/BKN ceilings on tap Tuesday night across the west/northwest. Will also be looking for the increased threat of fog near Galveston Tuesday night. 45

PREV DISCUSSION /Issued 550 PM CST Mon Mar 8 2021/.

LONG TERM (Wednesday through Monday).

An upper level ridge will be located over the western Gulf with a developing SW upper flow over East Texas. At the surface, high pressure will be over the eastern US with low pressure over the central plains. A moderate to strong onshore wind will continue to draw low level moisture into SE TX under a strong and persistent cap in the 850-700 mb layer. Pw values remain under an inch on Wednesday but forecast soundings show a semi-saturated profile from the sfc to 850 mb so it's possible to generate some very light showers beneath the cap, however, most of the area will remain dry. 850 mb temps support MaxT values near 80 degrees but with the level of mixing from the winds and expected cloud cover, will trim a few degrees and keep MaxT values in the mid 70's. Fcst soundings show a saturated profile beneath 850 mb on Wednesday night and PW values reach 1.20 inches so feel the potential for additional streamer showers will persist. Capping will remain very strong so only showers and expected. Cloud cover and winds will keep MinT values on the warm side, probably remaining in the middle 60's.

Thursday through Saturday look about the same as Wednesday, albeit a bit warmer. Fcst soundings show a semi-saturated profile below 850 mb with a significant dry layer between 850 and 500 mb with strong capping in the 850-700 mb layer. PW values remain between 1.00 and 1.20 inches so can't rule out an isolated shower but most of the area will remain dry. Forecast soundings also show some potential for more afternoon sun so went a bit warmer with MaxT values warming into the lower 80's. Overnight lows will remain very warm with MinT values in the mid/upper 60's.

Have added patchy fog near Galveston Bay/nearshore waters and the adjacent coastal areas. Surface dew points are progged to increase into the middle 60's. The water temperature is currently 60 degrees so there is some potential for sea fog. However the long and persistent S-SE fetch will bring warmer water toward the coast and this should help negate the sea fog potential.

The real fun and games begin next weekend as a deep upper level low becomes cut off from the main flow over Southern CA Thursday night and the system slowly meanders across the southern Rockies through Sunday. The upper ridge over will remain stout so the upper level low is going to have go up and over the top of the Gulf ridge. The upper low will pivot into the central plains on Sunday and it will take on a negative tilt. There are still some significant timing differences between the faster GFS and the slower ECMWF, ICON and GEM solutions. Prefer the slower solutions as cut off systems with no real kicker to get it moving, tend to travel slower. At this time, feel the most active weather will occur late Sunday afternoon into Sunday night. Speaking of active, PW values reach 1.55 inches and coupled with some mid level instability and a very favorable jet structure (splitting jet and SE TX will lie in a 130 kt RRQ) should yield a good chance of thunderstorms on Sunday night. SPC has already placed a part of SE TX in an outlook area for Day 7. 43

MARINE.

High pressure over the eastern U.S. and low pressure in the lee of the Rockies will maintain a moderate to occasionally strong onshore flow this week. SCEC conditions will be possible over the offshore waters Tuesday night through Friday. The warmer/more moist air mass overriding the cooler shelf waters will create a favorable environment for sea fog mid week. The persistent onshore flow will also bring elevated seas to the coastal waters and more importantly, warmer water temperatures. The water temp/dew point spread will narrow and this will hinder fog development over the second half of the week. Have added patchy fog for the nearshore waters and Galveston Bay from late Tuesday night through Friday for the potential for sea fog but confidence on when, where and the duration of this sea fog event is low. 43

PRELIMINARY POINT TEMPS/POPS.

College Station (CLL) 55 75 58 78 64 / 0 0 0 10 20 Houston (IAH) 56 75 60 78 65 / 0 0 0 10 10 Galveston (GLS) 61 70 61 71 64 / 0 0 0 10 10

HGX WATCHES/WARNINGS/ADVISORIES.

TX . None. GM . SMALL CRAFT SHOULD EXERCISE CAUTION through Tuesday afternoon 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.



SHORT TERM . 45


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
NCHT2 - 8770777 - Manchester, TX 25 mi51 min SSE 7 G 11 62°F 63°F1025.7 hPa (-2.0)
MGPT2 - 8770613 - Morgans Point, TX 39 mi51 min ESE 8 G 11 61°F 60°F1026.4 hPa (-2.0)
EPTT2 - 8771013 - Eagle Point, TX 42 mi51 min ESE 6 G 7 61°F 62°F1026.2 hPa (-1.8)
LUIT2 46 mi51 min E 6 G 8.9 61°F 60°F1025.8 hPa (-1.8)
GRRT2 47 mi51 min SSE 8 G 9.9 62°F 62°F1026.1 hPa (-1.9)
FPST2 49 mi51 min E 8.9 G 9.9 62°F 1025.1 hPa (-2.0)

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston, Sugar Land Municipal / Hull Field Airport, TX4 mi58 minSE 810.00 miA Few Clouds61°F58°F90%1026.1 hPa
Houston Southwest Airport, TX13 mi56 minSE 510.00 miMostly Cloudy60°F59°F95%1026.7 hPa
John Dunn Helistop, TX19 mi56 minSE 99.00 miOvercast61°F57°F88%1025.7 hPa
Houston Executive Airport, TX19 mi56 minSSE 67.00 miFair59°F59°F100%0 hPa
Houston, Houston Hobby Airport, TX23 mi58 minSE 1010.00 miMostly Cloudy62°F57°F84%1026.6 hPa

Link to 5 minute data for KSGR

Wind History from SGR (wind in knots)
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Last 24hrCalmNE3NE3NE4NE4E8E6SE5SE8SE9E7SE5SE11SE13SE13SE9SE11SE9SE6E3SE5SE6SE7SE8
1 day agoE5NE5NE5N3NE5E8E8E10E11SE9
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E12E10E8SE9E7E6E3CalmCalmCalmCalmE3Calm
2 days agoNE13N15NE12
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5NE11NE6NE9N7NE6NE6NE7NE7NE5E5NE6E4

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas
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Clear Lake
Click for Map
Tue -- 03:23 AM CST     0.50 feet Low Tide
Tue -- 04:26 AM CST     Moonrise
Tue -- 04:39 AM CST     0.51 feet High Tide
Tue -- 06:36 AM CST     Sunrise
Tue -- 01:57 PM CST     -0.54 feet Low Tide
Tue -- 02:58 PM CST     Moonset
Tue -- 06:25 PM CST     Sunset
Tue -- 10:45 PM CST     0.63 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.60.50.50.50.50.50.40.30.1-0.1-0.2-0.4-0.5-0.5-0.5-0.4-0.10.10.30.50.60.60.6

Tide / Current Tables for Clear Lake, Harris Co. Park, Texas (2)
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Clear Lake
Click for Map
Tue -- 04:26 AM CST     Moonrise
Tue -- 06:36 AM CST     Sunrise
Tue -- 02:09 PM CST     -0.35 feet Low Tide
Tue -- 02:58 PM CST     Moonset
Tue -- 06:25 PM CST     Sunset
Tue -- 10:03 PM CST     0.80 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.70.70.70.70.70.60.60.50.30.1-0-0.2-0.3-0.4-0.3-0.200.20.50.70.80.80.8

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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