Sunrise 6:41 AM   Sunset 8:07 PM Moonrise 3:57 AM   Moonset 4:41 PM

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GMZ330 Matagorda Bay- 410 Pm Cdt Sun May 5 2024
.small craft should exercise caution - .
Tonight - Southeast winds 15 to 20 knots diminishing to 10 to 15 knots. Bay waters slightly choppy to choppy. A chance of showers and Thunderstorms early this evening. Monday - Southeast winds 10 to 15 knots. Bay waters slightly choppy. Patchy fog in the morning. Monday night - Southeast winds 10 to 15 knots. Bay waters slightly choppy. Tuesday - South winds 10 to 15 knots. Bay waters slightly choppy. Tuesday night - Southeast winds 10 to 15 knots. Bay waters slightly choppy. Wednesday - South winds 10 to 15 knots. Bay waters slightly choppy. Wednesday night - South winds 10 to 15 knots. Bay waters slightly choppy. Thursday - Southeast winds 5 to 10 knots. Bay waters smooth. Thursday night - Southeast winds around 10 knots, becoming northeast 10 to 15 knots after midnight. Bay waters smooth, becoming slightly choppy after midnight. Friday - Northeast winds 10 to 15 knots. Bay waters slightly choppy. Friday night - Northeast winds 10 to 15 knots. Bay waters slightly choppy.
winds and waves higher in and near Thunderstorms.

GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 410 Pm Cdt Sun May 5 2024
Synopsis for high island to the matagorda ship channel out 60 nm including galveston and matagorda bays
fetch of moderate onshore winds will maintain somewhat elevated seas for the next several days. Mariners should note high flows from area rivers, creeks and streams will lead to above normal water levels and strong currents in the bays and icww well into midweek and can make navigation difficult. Showers and Thunderstorms should taper off this evening with only slight chances, if any, expected into midweek. Onshore flow should prevail until the next cold front pushes off the coast Thursday night.

FXUS64 KCRP 060011 AFDCRP

Area Forecast Discussion National Weather Service Corpus Christi TX 711 PM CDT Sun May 5 2024

New AVIATION

SHORT TERM
(Tonight through Monday night)
Issued at 309 PM CDT Sun May 5 2024

Key Messages:

- Severe thunderstorms late this afternoon/early this evening.
_ Heat indices exceeding 100 Monday for the Rio Grande Plains and the Brush Country.

Boundary left over from overnight convection continues to sag into the Rio Grande Plains and western Brush Country late this afternoon.
Two cells of note are pushing into northern Webb, LaSalle, and McMullen counties. By the looks of satellite and radar, earlier convection from Live Oak to Calhoun counties has worked over the atmosphere enough, and with the anvil blow off over those counties, the chances are low (10-20%) that convection gets going again. Otherwise, the thunderstorms will continue until about 00z.
The convection should diminish with the dry air moving in behind the boundary, and the loss of heating going into the evening.

With the drier air, although the sfc dewpoints will be in the mid 70s, the expectation will be that the Brush Country and Rio Grande plains will have sunny to partly cloudy skies by the afternoon, and continue partly to mostly cloudy overnight. With the sunshine during the afternoon, temperatures in the Rio Grande Valley will approach 100F, but with the lower to mid 70s dewpoints, will expect Heat Indices that will reach close to 105F. This is likely to begin our week of 100+ heat indices. To the east, in the Coastal Plains and Victoria Crossroads, the sky will be partly to mostly cloudy during the day and night. The heat indices will be near 100 on Monday for those areas.

LONG TERM
(Tuesday through next Saturday)
Issued at 309 PM CDT Sun May 5 2024

Key Messages:

- There is a moderate to high chance of heat index values 100 degrees or higher Tuesday through Thursday.

- A front Thursday night will usher in drier air and return temperatures to near normal for this time of year.

Not much of a change from the inherited Extended forecast package.
The main headlines for this week are the very warm temperatures through Thursday, followed by a frontal passage late week leading to cooler conditions over the weekend.

A persistent onshore flow will continue to drag moisture into the region, which combined with the very warm temperatures could lead to a moderate to major risk of heat-related impacts on the population, especially across portions of the Brush Country, Rio Grande Plains and southern Coastal Plains. Heat index values of 110-114 degrees will be possible during the afternoon hours Tuesday through Thursday. Therefore, Heat Advisories may be needed in following forecast packages. If spending time outside this week, please take this under consideration. Make sure to keep yourself hydrated, take frequent breaks from the heat and wear light and loose fitting clothes.

By the end of the week conditions will change in response to a frontal passage, which is progged to move across the area sometime Thursday night. Cooler temperatures are then in store Friday through the weekend. Highs will fall into the mid 80s to low 90s range, with overnight lows in the low 60s to near 70. A few showers and thunderstorms may accompany this boundary, but much drier conditions are expected in its wake. Onshore flow resumes late in the weekend as surface high pressure drifts eastward. Moisture return is expected to follow.

AVIATION
(00Z TAFS)
Issued at 655 PM CDT Sun May 5 2024

Very low confidence forecast. The models insist that a low deck moves into the region and cover all the TAF sites. However, looking at the satellite a large clearing has formed in the wake of the thunderstorms that have moved through ALI and is about to move through CRP. VCT looks like it would be cloudy most of the night. CRP and ALI, if the clearing doesn't happen, and the models say that it won't will get MVFR/IFR CIGs overnight(VCT as well).
COT and LRD are the unknown. However, think that the moisture and clouds will work their way west again. Considering the hazy look on the satellite west of the Rio Grande, that might be the case.
In which case, the there will be MVFR CIGs by 12z/Mon at LRD and COT which would hang around until 16z, when all of the forecast area would start to lift and the clouds break up for the day.

MARINE
Issued at 309 PM CDT Sun May 5 2024

A generally weak to moderate onshore flow is expected to continue through Thursday, with periods of Small Craft Exercise Caution conditions. Winds will back more to the northeast Friday into Saturday with the passage of a frontal boundary. There is a low chance of showers and thunderstorms on Saturday. Otherwise, the remainder of the forecast remains dry.

PRELIMINARY POINT TEMPS/POPS
Corpus Christi 76 89 76 90 / 70 0 0 0 Victoria 73 88 75 90 / 30 0 0 0 Laredo 76 97 76 102 / 0 0 0 0 Alice 74 92 74 95 / 90 0 0 0 Rockport 76 85 77 85 / 50 0 0 0 Cotulla 76 95 75 100 / 0 0 0 0 Kingsville 75 90 75 94 / 90 0 0 0 Navy Corpus 77 86 78 89 / 40 0 0 0

CRP WATCHES/WARNINGS/ADVISORIES
TX...None.
GM...None.

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Port Lavaca
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Sun -- 12:57 AM CDT     0.46 feet Low Tide
Sun -- 04:57 AM CDT     Moonrise
Sun -- 06:41 AM CDT     Sunrise
Sun -- 08:47 AM CDT     0.90 feet High Tide
Sun -- 03:26 PM CDT     0.75 feet Low Tide
Sun -- 04:10 PM CDT     0.75 feet High Tide
Sun -- 05:40 PM CDT     Moonset
Sun -- 08:04 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION

Port Lavaca, Matagorda Bay, Texas, Tide feet

Port O'Connor
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Sun -- 04:56 AM CDT     Moonrise
Sun -- 05:56 AM CDT     0.71 feet High Tide
Sun -- 06:41 AM CDT     Sunrise
Sun -- 11:02 AM CDT     0.64 feet Low Tide
Sun -- 02:04 PM CDT     0.66 feet High Tide
Sun -- 05:39 PM CDT     Moonset
Sun -- 08:03 PM CDT     Sunset
Sun -- 10:44 PM CDT     0.19 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Port O'Connor, Matagorda Bay, Texas, Tide feet

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