Sunrise 6:32 AM   Sunset 8:17 PM Moonrise 5:46 PM   Moonset 4:05 AM

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GMZ330 Matagorda Bay- 931 Am Cdt Tue May 21 2024
Rest of today - Southeast winds 10 to 15 knots. Bay waters slightly choppy. Tonight - Southeast winds 10 to 15 knots. Bay waters slightly choppy. Wednesday - Southeast winds 10 to 15 knots. Bay waters slightly choppy. Wednesday night - Southeast winds around 15 knots. Bay waters slightly choppy to choppy. Thursday - Southeast winds around 15 knots, rising to 15 to 20 knots in the afternoon. Bay waters slightly choppy, rising to choppy in the afternoon. Thursday night - Southeast winds around 15 knots. Bay waters slightly choppy to choppy. Friday - South winds 10 to 15 knots. Bay waters slightly choppy.Friday night - Southeast winds 10 to 15 knots. Bay waters slightly choppy. Saturday - Southeast winds 10 to 15 knots. Bay waters slightly choppy. Saturday night - Southeast winds 10 to 15 knots. Bay waters slightly choppy.

GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 931 Am Cdt Tue May 21 2024
Synopsis for high island to the matagorda ship channel out 60 nm including galveston and matagorda bays
generally moderate onshore winds will continue throughout the week. Winds and seas could occasionally reach caution flag to small craft criteria. The persistent onshore flow may increase the risk of rip currents towards the end of the week and into the weekend.

FXUS64 KCRP 211101 AFDCRP

Area Forecast Discussion National Weather Service Corpus Christi TX 601 AM CDT Tue May 21 2024

New AVIATION

SHORT TERM
(Tonight through Wednesday night)
Issued at 158 AM CDT Tue May 21 2024

- Major to Extreme heat risk, with heat index values 110-114 expected today

Heat continues to be the main concern for our forecast for today and Wednesday. High temperatures will be in the 90s along the coast to around 105 over the Brush Country. Heat index values will soar to 110-114 over most of South Texas. A Heat Advisory will be in effect from 1 PM to 7 PM today. A few locations, especially in the inland southern Coastal Bend, could have index values reach 115+, which may result in an Excessive Heat Warning. The stifling heat will return again Wednesday, with another Heat Advisory possible. Stay hydrated, wear loose, light clothes, and take lots of breaks if you must be outdoors. Also, remember to take care of your pets in this heat--bring them inside, give them plenty of water and shelter.

Hazy conditions are expected today and Wednesday as fires continue to burn well to our south.

LONG TERM
(Thursday through next Monday)
Issued at 158 AM CDT Tue May 21 2024

Key Messages:

- Major to extreme heat-related impacts can be expected through the weekend and into early next week.

The overall pattern looks to continue to stagnate through into the next week. However, that isn't to say that it will be the same everyday, but for the most part it looks like it will be hot with high humidity, and maybe there is a chance for rain every couple of days near the forecast area borders briefly, before things "dry out". I put dry out in quotes, because the rain chances end, but the humidity will remain high. So Wednesday night, models have some showers and thunderstorms north of Asherton and Dilley moving NE into the EWX forecast area. There are chances for rain that are 5- 10% along our border with EWX, but they move out by 7am (12z/Thu) so that the chances fall to 0%. So, Thursday and Friday are dry as well, but another shortwave moves along through the jet to the north, and brings another 5-10% chance of rain along our border with EWX Saturday morning, only for it to move northeast out of the region. Monday, has a small chance (5-10%) for something again before moving out. The only reason that I mention the 5-10% days, is that there are a few models that are in the NBM that are probably much higher in chances. So these are days to watch if those members produce anything.

However, the temperatures and humidity are the main concern.
Temperatures, under the ridge, begin to increase each day into the weekend and into early next week. The peak of the temperatures are Sunday, Monday with the 100 reaching to near the Coastal Bend.
However, Saturday, out west (western Brush Country, and Rio Grande Plains will be 105-110. Tuesday, temperatures "cool" to 100-105 in the western Brush Country, and Rio Grande Plains as a shortwave looks to move into south Texas. Dewpoints for Thursday through next Monday are expected to be 70F in the Rio Grande Plains to the around 80F along the Coastal Bend. So to couple the high humidity to the hot temperatures, the heat index values begin to climb each day as well. Thursday will be 110-113, with some heat advisory areas.
Friday will be close with the first heat warning of the year, but we may not hold the 115 long enough to actually get to the criteria.
Saturday, Sunday and Monday are definite heat warning days if these conditions persist as we get and stay above 115F for areas along the Coastal Bend, and areas out west.

AVIATION
(12Z TAFS)
Issued at 539 AM CDT Tue May 21 2024

Generally MVFR conditions start this morning's TAF period, but expect periods of VFR conditions even early today. VFR conditions will prevail over South Texas around or just later than midday.
Winds could get breezy at times, with gusts to around 25 knots possible. Otherwise, hot and dry.

MARINE
Issued at 158 AM CDT Tue May 21 2024

Weak to moderate east to southeasterly flow will persist through tonight, when winds will become moderate. A generally moderate onshore flow will persist through the end of the week. Expect periods of moderate to strong onshore flow each afternoon for Thursday through Sunday across the southern bays and nearshore waters south of Port Aransas. Hazy conditions will linger at times through the week as fires continue to burn to our south.

PRELIMINARY POINT TEMPS/POPS
Corpus Christi 93 79 93 79 / 0 0 0 0 Victoria 93 78 92 76 / 0 0 0 0 Laredo 105 79 104 79 / 0 0 0 0 Alice 97 78 97 77 / 0 0 0 0 Rockport 88 79 89 79 / 0 0 0 0 Cotulla 102 79 103 79 / 0 0 0 10 Kingsville 95 79 95 79 / 0 0 0 0 Navy Corpus 89 80 90 81 / 0 0 0 0

CRP WATCHES/WARNINGS/ADVISORIES
TX...Heat Advisory from 1 PM this afternoon to 7 PM CDT this evening for TXZ229>231-239>244.

GM...None.

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Port Lavaca
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Tue -- 01:21 AM CDT     0.06 feet Low Tide
Tue -- 05:05 AM CDT     Moonset
Tue -- 06:32 AM CDT     Sunrise
Tue -- 11:15 AM CDT     1.03 feet High Tide
Tue -- 06:46 PM CDT     Moonrise
Tue -- 08:14 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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Tue -- 05:04 AM CDT     Moonset
Tue -- 06:31 AM CDT     Sunrise
Tue -- 09:13 AM CDT     0.85 feet High Tide
Tue -- 06:44 PM CDT     Moonrise
Tue -- 08:12 PM CDT     Sunset
Tue -- 11:31 PM CDT     -0.10 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION

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

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