Marine Weather and Tide Forecast for Jamaica Beach, TX
April 18, 2024 5:35 AM CDT (10:35 UTC) Change Location
 | Sunrise 6:47 AM Sunset 7:49 PM Moonrise 2:25 PM Moonset 3:13 AM |
GMZ355 Expires:202404181915;;940415 Fzus54 Khgx 180658 Cwfhgx
coastal waters forecast for texas national weather service houston/galveston tx 158 am cdt Thu apr 18 2024
upper texas coastal waters from high island to the matagorda ship channel out 60 nautical miles including galveston and matagorda bays.
seas are provided as a range of the average height of the highest 1/3 of the waves - .along with the occasional height of the average highest 10 percent of the waves.
gmz350-355-181915- coastal waters from freeport to matagorda ship channel tx out 20 nm-coastal waters from high island to freeport tx out 20 nm- 158 am cdt Thu apr 18 2024
Today - Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Patchy fog early this morning. Patchy fog late.
Tonight - Southeast winds 10 to 15 knots, becoming south around 10 knots late. Seas 3 to 4 feet. Patchy fog.
Friday - Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Patchy fog in the morning.
Friday night - Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Saturday - Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Saturday night - East winds 10 to 15 knots. Seas around 3 feet. A chance of Thunderstorms. Showers likely after midnight.
Sunday - North winds 10 to 15 knots. Seas 3 to 4 feet. A chance of showers and Thunderstorms in the morning.
Sunday night - Northeast winds 15 to 20 knots. Seas 3 to 4 feet.
Monday - Northeast winds 10 to 15 knots. Seas 2 to 4 feet.
Monday night - Southeast winds around 10 knots. Seas 2 to 3 feet.
winds and seas higher in and near Thunderstorms.
coastal waters forecast for texas national weather service houston/galveston tx 158 am cdt Thu apr 18 2024
upper texas coastal waters from high island to the matagorda ship channel out 60 nautical miles including galveston and matagorda bays.
seas are provided as a range of the average height of the highest 1/3 of the waves - .along with the occasional height of the average highest 10 percent of the waves.
gmz350-355-181915- coastal waters from freeport to matagorda ship channel tx out 20 nm-coastal waters from high island to freeport tx out 20 nm- 158 am cdt Thu apr 18 2024
winds and seas higher in and near Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 158 Am Cdt Thu Apr 18 2024
Synopsis for high island to the matagorda ship channel out 60 nm including galveston and matagorda bays
a continued onshore flow will persist into Saturday leading to the rip current risk remaining elevated. Periods of haze and fog can be anticipated though it is not expected to become dense. The next cold front and associated showers and Thunderstorms will push off the coast late Saturday night or Sunday morning followed by moderate northeast winds in its wake. Onshore winds resume during the early to middle of next week.
a continued onshore flow will persist into Saturday leading to the rip current risk remaining elevated. Periods of haze and fog can be anticipated though it is not expected to become dense. The next cold front and associated showers and Thunderstorms will push off the coast late Saturday night or Sunday morning followed by moderate northeast winds in its wake. Onshore winds resume during the early to middle of next week.
Area Discussion for - Houston/Galveston, TX
(hide/show) HelpNOTE: mouseover dotted underlined text for definition
FXUS64 KHGX 180817 AFDHGX
Area Forecast Discussion National Weather Service Houston/Galveston TX 317 AM CDT Thu Apr 18 2024
New SHORT TERM, LONG TERM, MARINE, HYDROLOGY
SHORT TERM
(Today through Friday Night)
Issued at 317 AM CDT Thu Apr 18 2024
A consistent onshore flow regime continues to characterize the synoptic pattern across the region, with warm and humid conditions prevailing into the weekend prior to the approach of a surface cold front on Sunday (see Long Term section). For the time being, the presence of broad surface high pressure over the Southeastern CONUS and a developing surface low centered over the Oklahoma Panhandle maintains a moderate southeast wind and thus the steady influx of warm and moist Gulf air.
A further increase in this afternoon's highs, driven by increases in 850mb temperatures, persistent WAA, and more scattered cloud coverage, can be expected. While it's not particularly likely that we will approach daily record values, we'll nonetheless see many locations reaching the upper 80s inland and the lower 80s along the immediate coast. Models continue to depict the passage of a few weak shortwaves embedded within the midlevel flow, but forecast soundings continue to show the presence of a capping inversion that will work to inhibit any widespread precipitation.
High resolution models continue to show the approach of a cold front associated with the aforementioned low this evening, but the boundary remains expected to stall just to our north. Nonetheless, given lingering uncertainty regarding the exact progression of the front, the potential for a few storms across the northern zones can't be ruled out should the boundary progress further to the south than currently expected. As such, have included the mention for a slight chance of thunderstorms in this morning's package.
Warm and humid conditions continue to prevail on Friday with highs yet again reaching the mid/upper 80s across much of the area.
Locations well to the north of I-10 may see a slightly cooler and drier day depending on the exact progression of the boundary, though large-scale changes to the overall pattern are not expected until Sunday. Overnight lows will continue to sit in the upper 60s to lower 70s.
With humid conditions prevailing for the next several days and temperatures remaining elevated, most of the area looks poised to reach WBGT values in the lower 80s. With this being the beginning of the warmer season and thus heat acclimation being limited at this time, heat safety actions for those planning any strenuous outdoor activities may need to be considered.
Cady
LONG TERM
(Saturday through Wednesday)
Issued at 317 AM CDT Thu Apr 18 2024
The quasi-stationary frontal boundary will still be hanging around near the Brazos Valley throughout most of the day on Saturday. It's worth mentioning that the global deterministic models keep the front just north of Southeast TX throughout most of the day, but the higher resolution NAM shows the front right over the Brazos Valley/Piney Woods. The preceding zonal flow aloft is the cause of the front just biding its time before getting a push from an embedded shortwave trough pushing in from the Four Corners region.
With PW values surging up to 1.8"-2.0" (MAX percentile: ~1.91")
along the frontal boundary, we'll certainly have plenty of moisture in place (in addition to various other ingredients) for a heavy rainfall threat.
The higher rainfall amounts will be focused along a line with the greatest frontogenetic forcing, which as of the 00Z model suite is split between either being over the Brazos Valley/Piney Woods or just north of there. Currently expecting 1-3" of rainfall for the Brazos Valley, but there are still a few models showing totals of 4+" being possible within the vicinity. It's just going to be a matter of where the frontogenetic band sets up as that is going to hold the higher rainfall rates. The main window for heavy rain will be late Saturday night/early Sunday morning. The WPC has outlined the Brazos Valley/Piney Woods in a slight risk of excessive rainfall (level 2 out of 4) and a marginal risk (level 1 out of 4) elsewhere generally north of I-10. Locally heavy rainfall could lead to isolated street flooding especially in low-lying areas and areas with poor drainage. We'll also have to monitor for responses along area rivers/creeks/bayous where the heavy rain falls along with its subsequent runoff. There may be a few lingering showers into late Sunday morning/early afternoon, but the bulk of the rain will be finished early Sunday morning.
This cold front isn't a strong one by any means, but you'll definitely be able to feel its effects. We'll go from daytime highs on Saturday in the low to mid 80s to the upper 60s to low 70s on Sunday. The Saturday night temperature forecast one remains a little tricky depending on how far south the front sags initially, but for now we have lows in the mid to upper 50s across the Brazos Valley and low to mid 60s elsewhere. Sunday night may be the coolest temperatures we'll see for at least a week or so with widespread lows in the 50s. Drier air (PW values ~0.8-1.0") will be fully in place on Sunday night, but quickly modifies into a more humid airmass as surface high pressure exits to the east allowing for onshore flow to return. In addition to that, the synoptic pattern looks to transition into ridging aloft, so we can expect a warming trend going into next week. We'll go from the upper 70s on Monday to the low 80s on Tuesday and mid 80s on Wednesday...and the warming trend may not end there. Chances for showers/storms return towards the end of the long term period with elevated moisture being lifted by passing embedded shortwaves. This gives off the appearance of being a sea breeze/diurnal type of convective activity.
Batiste
AVIATION
(06Z TAF Issuance)
Issued at 1116 PM CDT Wed Apr 17 2024
MVFR/IFR CIGs will continue overnight into Thursday morning.
Patchy fog may lead to a slight decrease in VSBYs at times, but confidence is low on when and where fog will occur. Improvement to VFR expected by the afternoon hours with another round of MVFR/IFR CIGs expected overnight Thursday into Friday morning.
Have included VCSH for HOU/IAH terminals for Thursday evening into the overnight hours.
Adams
MARINE
Issued at 317 AM CDT Thu Apr 18 2024
With onshore flow prevailing, an elevated rip current risk continues through the end of the week along with the potential for intermittent periods of haze/fog mainly during the evening through early morning hours. If sea fog develops, it is not expected to be dense or create significant visibility restrictions. That will all come to an end once a cold front pushes offshore late Saturday night/early Sunday morning. Expect the cold front to bring in a round of showers/storms that may linger into early Sunday afternoon in the Gulf waters. Moderate northeasterly winds prevail in the wake of the front before shifting back to southeasterly on Monday night.
Batiste
HYDROLOGY
Issued at 317 AM CDT Thu Apr 18 2024
Only one River Flood Warning remains in effect as of early Thursday morning. The Trinity River at Riverside (RVRT2) crested into minor flood stage and is now on a slow descent. It is forecast to fall out of flood stage on Friday afternoon. We're also continuing to monitor the Trinity River at Moss Bluff (MBFT2) as its secondary crest is forecast to reach into minor flood stage on late Friday/early Saturday. Additional rainfall is expected Saturday/Sunday, but latest model consensus keeps the higher rainfall amounts just north of Southeast Texas. It is definitely still worth monitoring though especially for those in and around the Brazos Valley/Piney Woods, so stay up to date on the latest forecast.
You can monitor current and forecast conditions at this weblink: water.weather.gov/ahps2/forecasts.php?wfo=HGX
Batiste
PRELIMINARY POINT TEMPS/POPS
College Station (CLL) 88 68 83 67 / 10 20 10 20 Houston (IAH) 88 71 86 71 / 10 10 10 0 Galveston (GLS) 80 72 80 71 / 10 10 0 0
HGX WATCHES/WARNINGS/ADVISORIES
TX...High Rip Current Risk through this evening for TXZ436>439.
GM...None.
Area Forecast Discussion National Weather Service Houston/Galveston TX 317 AM CDT Thu Apr 18 2024
New SHORT TERM, LONG TERM, MARINE, HYDROLOGY
SHORT TERM
(Today through Friday Night)
Issued at 317 AM CDT Thu Apr 18 2024
A consistent onshore flow regime continues to characterize the synoptic pattern across the region, with warm and humid conditions prevailing into the weekend prior to the approach of a surface cold front on Sunday (see Long Term section). For the time being, the presence of broad surface high pressure over the Southeastern CONUS and a developing surface low centered over the Oklahoma Panhandle maintains a moderate southeast wind and thus the steady influx of warm and moist Gulf air.
A further increase in this afternoon's highs, driven by increases in 850mb temperatures, persistent WAA, and more scattered cloud coverage, can be expected. While it's not particularly likely that we will approach daily record values, we'll nonetheless see many locations reaching the upper 80s inland and the lower 80s along the immediate coast. Models continue to depict the passage of a few weak shortwaves embedded within the midlevel flow, but forecast soundings continue to show the presence of a capping inversion that will work to inhibit any widespread precipitation.
High resolution models continue to show the approach of a cold front associated with the aforementioned low this evening, but the boundary remains expected to stall just to our north. Nonetheless, given lingering uncertainty regarding the exact progression of the front, the potential for a few storms across the northern zones can't be ruled out should the boundary progress further to the south than currently expected. As such, have included the mention for a slight chance of thunderstorms in this morning's package.
Warm and humid conditions continue to prevail on Friday with highs yet again reaching the mid/upper 80s across much of the area.
Locations well to the north of I-10 may see a slightly cooler and drier day depending on the exact progression of the boundary, though large-scale changes to the overall pattern are not expected until Sunday. Overnight lows will continue to sit in the upper 60s to lower 70s.
With humid conditions prevailing for the next several days and temperatures remaining elevated, most of the area looks poised to reach WBGT values in the lower 80s. With this being the beginning of the warmer season and thus heat acclimation being limited at this time, heat safety actions for those planning any strenuous outdoor activities may need to be considered.
Cady
LONG TERM
(Saturday through Wednesday)
Issued at 317 AM CDT Thu Apr 18 2024
The quasi-stationary frontal boundary will still be hanging around near the Brazos Valley throughout most of the day on Saturday. It's worth mentioning that the global deterministic models keep the front just north of Southeast TX throughout most of the day, but the higher resolution NAM shows the front right over the Brazos Valley/Piney Woods. The preceding zonal flow aloft is the cause of the front just biding its time before getting a push from an embedded shortwave trough pushing in from the Four Corners region.
With PW values surging up to 1.8"-2.0" (MAX percentile: ~1.91")
along the frontal boundary, we'll certainly have plenty of moisture in place (in addition to various other ingredients) for a heavy rainfall threat.
The higher rainfall amounts will be focused along a line with the greatest frontogenetic forcing, which as of the 00Z model suite is split between either being over the Brazos Valley/Piney Woods or just north of there. Currently expecting 1-3" of rainfall for the Brazos Valley, but there are still a few models showing totals of 4+" being possible within the vicinity. It's just going to be a matter of where the frontogenetic band sets up as that is going to hold the higher rainfall rates. The main window for heavy rain will be late Saturday night/early Sunday morning. The WPC has outlined the Brazos Valley/Piney Woods in a slight risk of excessive rainfall (level 2 out of 4) and a marginal risk (level 1 out of 4) elsewhere generally north of I-10. Locally heavy rainfall could lead to isolated street flooding especially in low-lying areas and areas with poor drainage. We'll also have to monitor for responses along area rivers/creeks/bayous where the heavy rain falls along with its subsequent runoff. There may be a few lingering showers into late Sunday morning/early afternoon, but the bulk of the rain will be finished early Sunday morning.
This cold front isn't a strong one by any means, but you'll definitely be able to feel its effects. We'll go from daytime highs on Saturday in the low to mid 80s to the upper 60s to low 70s on Sunday. The Saturday night temperature forecast one remains a little tricky depending on how far south the front sags initially, but for now we have lows in the mid to upper 50s across the Brazos Valley and low to mid 60s elsewhere. Sunday night may be the coolest temperatures we'll see for at least a week or so with widespread lows in the 50s. Drier air (PW values ~0.8-1.0") will be fully in place on Sunday night, but quickly modifies into a more humid airmass as surface high pressure exits to the east allowing for onshore flow to return. In addition to that, the synoptic pattern looks to transition into ridging aloft, so we can expect a warming trend going into next week. We'll go from the upper 70s on Monday to the low 80s on Tuesday and mid 80s on Wednesday...and the warming trend may not end there. Chances for showers/storms return towards the end of the long term period with elevated moisture being lifted by passing embedded shortwaves. This gives off the appearance of being a sea breeze/diurnal type of convective activity.
Batiste
AVIATION
(06Z TAF Issuance)
Issued at 1116 PM CDT Wed Apr 17 2024
MVFR/IFR CIGs will continue overnight into Thursday morning.
Patchy fog may lead to a slight decrease in VSBYs at times, but confidence is low on when and where fog will occur. Improvement to VFR expected by the afternoon hours with another round of MVFR/IFR CIGs expected overnight Thursday into Friday morning.
Have included VCSH for HOU/IAH terminals for Thursday evening into the overnight hours.
Adams
MARINE
Issued at 317 AM CDT Thu Apr 18 2024
With onshore flow prevailing, an elevated rip current risk continues through the end of the week along with the potential for intermittent periods of haze/fog mainly during the evening through early morning hours. If sea fog develops, it is not expected to be dense or create significant visibility restrictions. That will all come to an end once a cold front pushes offshore late Saturday night/early Sunday morning. Expect the cold front to bring in a round of showers/storms that may linger into early Sunday afternoon in the Gulf waters. Moderate northeasterly winds prevail in the wake of the front before shifting back to southeasterly on Monday night.
Batiste
HYDROLOGY
Issued at 317 AM CDT Thu Apr 18 2024
Only one River Flood Warning remains in effect as of early Thursday morning. The Trinity River at Riverside (RVRT2) crested into minor flood stage and is now on a slow descent. It is forecast to fall out of flood stage on Friday afternoon. We're also continuing to monitor the Trinity River at Moss Bluff (MBFT2) as its secondary crest is forecast to reach into minor flood stage on late Friday/early Saturday. Additional rainfall is expected Saturday/Sunday, but latest model consensus keeps the higher rainfall amounts just north of Southeast Texas. It is definitely still worth monitoring though especially for those in and around the Brazos Valley/Piney Woods, so stay up to date on the latest forecast.
You can monitor current and forecast conditions at this weblink: water.weather.gov/ahps2/forecasts.php?wfo=HGX
Batiste
PRELIMINARY POINT TEMPS/POPS
College Station (CLL) 88 68 83 67 / 10 20 10 20 Houston (IAH) 88 71 86 71 / 10 10 10 0 Galveston (GLS) 80 72 80 71 / 10 10 0 0
HGX WATCHES/WARNINGS/ADVISORIES
TX...High Rip Current Risk through this evening for TXZ436>439.
GM...None.
| Stations | Dist | Age | Wind | Air Temp | Water Temp | Waves | inHg | DewPt |
| GRRT2 | 9 mi | 47 min | SE 7G | 74°F | 76°F | 29.90 | ||
| LUIT2 | 11 mi | 47 min | SE 7G | 74°F | 75°F | 29.91 | ||
| GTOT2 | 13 mi | 47 min | SSE 2.9G | 74°F | 75°F | 29.90 | ||
| GNJT2 - 8771341 - Galveston Bay (North Jetty), TX | 18 mi | 47 min | S 9.9G | 76°F | 75°F | 29.90 | ||
| EPTT2 - 8771013 - Eagle Point, TX | 20 mi | 47 min | SSE 11G | 79°F | 76°F | 29.92 | ||
| FPST2 | 24 mi | 47 min | ESE 8G | 74°F | 74°F | 29.89 | ||
| KGVW | 24 mi | 20 min | SE 8 | 73°F | 72°F | |||
| MGPT2 - 8770613 - Morgans Point, TX | 33 mi | 47 min | SE 11G | 73°F | 75°F | 29.91 | ||
| RLOT2 - 8770971 - Rollover Pass, TX | 33 mi | 47 min | SSE 11G | 73°F | 80°F | 29.92 | ||
| NCHT2 - 8770777 - Manchester, TX | 39 mi | 47 min | SSW 8G | 75°F | 29.88 | |||
| HIST2 | 42 mi | 47 min | SSE 6G | 74°F | 80°F | 29.94 |
toggle option: (graph/table)
No data
Airport Reports
EDIT (hide/show) Help Click EDIT to display multiple airports. Follow links for more data.| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Temp | DewPt | RH | inHg |
| KGLS SCHOLES INTL AT GALVESTON,TX | 8 sm | 43 min | SSE 08 | 8 sm | Overcast | 73°F | 73°F | 100% | 29.94 |
Jamaica Beach
Click for Map
Thu -- 12:35 AM CDT 0.77 feet Low Tide
Thu -- 02:56 AM CDT 0.84 feet High Tide
Thu -- 04:13 AM CDT Moonset
Thu -- 06:50 AM CDT Sunrise
Thu -- 11:32 AM CDT 0.21 feet Low Tide
Thu -- 03:24 PM CDT Moonrise
Thu -- 05:52 PM CDT 0.90 feet High Tide
Thu -- 07:48 PM CDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 12:35 AM CDT 0.77 feet Low Tide
Thu -- 02:56 AM CDT 0.84 feet High Tide
Thu -- 04:13 AM CDT Moonset
Thu -- 06:50 AM CDT Sunrise
Thu -- 11:32 AM CDT 0.21 feet Low Tide
Thu -- 03:24 PM CDT Moonrise
Thu -- 05:52 PM CDT 0.90 feet High Tide
Thu -- 07:48 PM CDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Jamaica Beach, West Bay, Texas, Tide feet
| 12 am |
| 0.8 |
| 1 am |
| 0.8 |
| 2 am |
| 0.8 |
| 3 am |
| 0.8 |
| 4 am |
| 0.8 |
| 5 am |
| 0.8 |
| 6 am |
| 0.7 |
| 7 am |
| 0.5 |
| 8 am |
| 0.4 |
| 9 am |
| 0.3 |
| 10 am |
| 0.3 |
| 11 am |
| 0.2 |
| 12 pm |
| 0.2 |
| 1 pm |
| 0.3 |
| 2 pm |
| 0.4 |
| 3 pm |
| 0.6 |
| 4 pm |
| 0.8 |
| 5 pm |
| 0.9 |
| 6 pm |
| 0.9 |
| 7 pm |
| 0.9 |
| 8 pm |
| 0.8 |
| 9 pm |
| 0.8 |
| 10 pm |
| 0.7 |
| 11 pm |
| 0.7 |
Bolivar Roads
Click for Map
Thu -- 02:26 AM CDT -0.59 knots Min Ebb
Thu -- 04:12 AM CDT Moonset
Thu -- 06:49 AM CDT Sunrise
Thu -- 07:27 AM CDT -1.36 knots Max Ebb
Thu -- 11:19 AM CDT 0.00 knots Slack
Thu -- 03:04 PM CDT 1.68 knots Max Flood
Thu -- 03:23 PM CDT Moonrise
Thu -- 07:47 PM CDT Sunset
Thu -- 07:53 PM CDT -0.00 knots Slack
Thu -- 11:05 PM CDT -1.07 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Thu -- 02:26 AM CDT -0.59 knots Min Ebb
Thu -- 04:12 AM CDT Moonset
Thu -- 06:49 AM CDT Sunrise
Thu -- 07:27 AM CDT -1.36 knots Max Ebb
Thu -- 11:19 AM CDT 0.00 knots Slack
Thu -- 03:04 PM CDT 1.68 knots Max Flood
Thu -- 03:23 PM CDT Moonrise
Thu -- 07:47 PM CDT Sunset
Thu -- 07:53 PM CDT -0.00 knots Slack
Thu -- 11:05 PM CDT -1.07 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Bolivar Roads, Texas Current, knots
| 12 am |
| -0.8 |
| 1 am |
| -0.7 |
| 2 am |
| -0.6 |
| 3 am |
| -0.6 |
| 4 am |
| -0.8 |
| 5 am |
| -1 |
| 6 am |
| -1.2 |
| 7 am |
| -1.3 |
| 8 am |
| -1.3 |
| 9 am |
| -1.2 |
| 10 am |
| -0.8 |
| 11 am |
| -0.2 |
| 12 pm |
| 0.5 |
| 1 pm |
| 1.1 |
| 2 pm |
| 1.5 |
| 3 pm |
| 1.7 |
| 4 pm |
| 1.6 |
| 5 pm |
| 1.3 |
| 6 pm |
| 0.9 |
| 7 pm |
| 0.4 |
| 8 pm |
| -0.1 |
| 9 pm |
| -0.5 |
| 10 pm |
| -0.9 |
| 11 pm |
| -1.1 |
Houston/Galveston, TX,
NOTICE: Some pages have affiliate links to Amazon. As an Amazon Associate, I earn from qualifying purchases. Please read website Cookie, Privacy, and Disclamers by clicking HERE. To contact me click HERE. For my YouTube page click HERE