Monday, April19, 2021
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Marine Weather and Tides
Rockport, 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 6:58AMSunset 7:58PM Monday April 19, 2021 5:06 PM CDT (22:06 UTC) Moonrise 11:23AMMoonset 12:55AM Illumination 55% Phase: First Quarter Moon; Moon at 8 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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GMZ235 Bays And Waterways From Port Aransas To Port O'connor- 348 Pm Cdt Mon Apr 19 2021
Tonight..Southeast wind 5 to 10 knots. Bays smooth. A slight chance of showers.
Tuesday..Northeast wind up to 5 knots becoming southeast in the afternoon. Bays smooth.
Tuesday night..Southeast wind around 10 knots becoming northeast 15 to 20 knots after midnight. Bays choppy to occasionally rough.
Wednesday..Northeast wind 15 to 20 knots decreasing to 10 to 15 knots in the afternoon. Bays choppy to occasionally rough.
Wednesday night..East wind 10 to 15 knots. Bays slightly choppy to occasionally choppy.
Thursday..East wind 15 to 20 knots. Bays choppy. A slight chance of showers.
Thursday night..Southeast wind 15 to 20 knots. Bays choppy. A chance of showers. A chance of Thunderstorms after midnight.
Friday..Southeast wind 15 to 20 knots. Bays choppy. A chance of showers and Thunderstorms.
Friday night..South wind 15 to 20 knots decreasing to 10 to 15 knots after midnight. Bays choppy. A slight chance of showers and Thunderstorms.
Saturday..Southwest wind 5 to 10 knots shifting north in the afternoon. Bays smooth to slightly choppy.
Saturday night..Northeast wind 10 to 15 knots. Bays slightly choppy to occasionally choppy.
GMZ200 348 Pm Cdt Mon Apr 19 2021
Synopsis for the middle texas coastal waters.. An upper level disturbance may contribute to isolated showers this evening through late tonight. Generally weak onshore flow expected tonight through Tuesday. A cold front is expected to enter the waters Tuesday night, followed by moderate northeast flow. No significant precipitation expected along the front. Moderate northeasterly winds continue through early evening Wednesday before shifting by Thursday morning as the cold front retreats northward as a warm front. Moderate to strong southeasterly flow will dominate Thursday through Friday night in advance of a pacific front with dry winds in its wake. Small craft advisory conditions are possible Friday through Friday night over the offshore waters. Weak to moderate northwesterly winds Saturday morning will shift back onshore by Sunday. Isolated to scattered showers and Thunderstorms are possible Thursday night through Friday night.


7 Day Forecast for Marine Location Near Rockport, TX
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location: 27.99, -97.07     debug


Area Discussion for - Corpus Christi, TX
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FXUS64 KCRP 192031 AFDCRP

Area Forecast Discussion National Weather Service Corpus Christi TX 331 PM CDT Mon Apr 19 2021

SHORT TERM (Tonight through Tuesday Night).

The upper level trough (500 mb) will continue to move across the region this evening (additional upper forcing provided by a subtropical jet streak), followed by synoptic scale descent/drying. Will maintain less than 20 percent chance for showers near the coast/offshore this evening, then dry over the CWA by 06z Tuesday. Will forecast patchy fog over the WRN CWA 09-14z Tuesday owing to light/variable wind and thermodynamic profile conducive to radiation fog (per the NAM deterministic.) A cold front has entered the Southern Plains and is expected to continue SWD movement owing to an upper disturbance predicted to move EWD across the Plains to the Great Lakes/Mississippi Valley during the period. This front is expected to enter the CWA Tuesday night. However, limited moisture will preclude significant precipitation along the front (although the RAP moisture convergence along the front increases PWAT values to near normal values, the NAM/GFS do not). Temperatures during the period similar to the SREF mean values.

LONG TERM (Wednesday through Monday).

The reinforcing cold front ushering a dry and cool Canadian airmass will be south of the area by Wednesday morning. The subtropical jet stream and broad upper-level ridging from a high pressure system over Central America, will shift northeastward over Texas through the work week. Meanwhile, an upper-level trough over the western CONUS will swing over the Central CONUS Friday. The polar and sub- tropical jet stack over one another Thursday night into Friday, allowing for favorable upper-level dynamics over portions of Texas. While these features are going on in the upper-levels, the surface is also playing a role; a surface low pressure begins to develop over the Rio Grande Plains Wednesday afternoon before being ingested into the main surface low over the Four Corners Wednesday night. The development of the surface low will cause the cold front to slowly retreat northward as a warm front. The warm front will be nearly stationary over the CWA through Thursday before accelerating northward Thursday night into Friday. Isentropic lift and sufficient low-level moisture will allow isolated to scattered showers to develop Thursday through Thursday night. An increase in elevated CAPE could squeeze out a few thunderstorms Thursday night so kept with the previous forecast.

How's the model agreement and what are the differences? The NAM, being a higher resolution short-term model, develops a surface low over Deep South Texas through the day Thursday. The latest 12Z GFS has also hinted at developing a surface trough over the same area and time. If a surface trough or low does develop over or just south of the area on Thursday, this will hinder the front from proceeding northward and increase rain chances on Thursday. The ECMWF and CMC pushes the warm front northward of the region, lowering QPFs. In either case, South Texas will be located in the warm sector of an approaching pacific front caused by an advancing mid to upper-level trough.

Significant moisture (PWATs near 2.0"), CAPE values 1500-2500 J/kg, a weak cap, approaching mid and upper-level trough inducing positive vorticity, isentropic lift, and near the right entrance region of the subtropical jet, all favor the potential for strong to severe storms Friday afternoon into the early evening. Scattered to numerous showers and thunderstorms remain possible through the day on Friday, with the greatest threat expected over the Victoria Crossroads. The SPC has already included a 15% severe risk for areas just north of our CWA, this area will likely be changed before the onset of the event. Convection becomes less likely Friday night as the cap strengthens and disturbance moves eastward. There does lie some uncertainty on how fast the disturbance progresses eastward. The GFS and CMC develops a steep/strong trough that is about 6-12 hours slower than the more zonal ECMWF trough. According to the WPC and previous forecaster, the GFS has been trending more towards the faster solution of the ECMWF. Therefore, have put more weight on PoPs decreasing to slight chances late Friday night. This time period will be very important to focus on and relay any changes to patterns and/or trends.

A pacific front with dry air following is expected to pass through overnight Friday night into Saturday morning. Dry conditions will be in place Saturday and Sunday with onshore flow returning Sunday. Highs are expected to stay in the 70s Wednesday and Thursday, then warm into the 80s and 90s Friday through the weekend as WAA increases with the northward push of the warm front. Lows in the mid 50s to mid 60s Wednesday night will warm well into the 60s for the remainder of the period.

MARINE.

In response to an upper level disturbance, isolated showers, with no significant accumulation, anticipated 00-09z Tuesday before significant drying/synoptic scale descent as the upper system moves east. A cold front will approach the waters Tuesday night yet no significant precipitation along the boundary due to limited moisture. Moderate northeasterly winds continue through early evening Wednesday before shifting by Thursday morning as the cold front retreats northward as a warm front. Moderate to strong southeasterly flow will dominate Thursday through Friday night in advance of a pacific front with dry winds in its wake. Small Craft Advisory conditions are possible Friday through Friday night over the offshore waters. Weak to moderate northwesterly winds Saturday morning will shift back onshore by Sunday. Isolated to scattered showers and thunderstorms are possible Thursday night through Friday night.

PRELIMINARY POINT TEMPS/POPS. Corpus Christi 57 80 55 72 63 / 10 0 0 0 0 Victoria 53 81 48 73 55 / 10 0 0 0 0 Laredo 56 86 58 77 63 / 0 0 0 0 20 Alice 53 84 55 74 60 / 10 0 0 0 10 Rockport 61 75 57 70 64 / 10 0 0 0 0 Cotulla 54 86 53 77 61 / 0 0 0 0 10 Kingsville 55 83 56 72 62 / 10 0 0 0 10 Navy Corpus 63 74 59 69 66 / 10 0 0 0 0

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



WC/87 . SHORT TERM EMF/94 . LONG TERM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCPT2 - 8774770 - Rockport, TX 3 mi49 min E 5.1 G 9.9 67°F 69°F1016.4 hPa
RTAT2 - 8775237 - Port Aransas, TX 10 mi49 min NE 8.9 G 12 66°F 77°F1015.8 hPa
MAXT2 - Mission-Aransas Reserve, TX 10 mi67 min ENE 8 65°F 1017 hPa (-2.0)54°F
UTVT2 11 mi49 min 67°F 55°F
ANPT2 11 mi49 min NE 9.9 G 12 66°F 69°F1014.8 hPa
PTAT2 - Port Aransas, TX 11 mi67 min ENE 9.9 G 9.9 66°F 70°F1015.6 hPa (-2.2)52°F
MHBT2 13 mi49 min ENE 8 G 11 68°F 1015.4 hPa55°F
42092 16 mi37 min 70°F3 ft
TXVT2 21 mi49 min 68°F 1015.6 hPa54°F
TAQT2 - 8775296 - Texas State Aquarium, TX 21 mi49 min 68°F 69°F1014.9 hPa
AWRT2 22 mi49 min E 5.1 G 8.9 66°F 63°F1015 hPa
TLVT2 24 mi49 min 67°F 1015.5 hPa55°F
NUET2 25 mi49 min E 8 G 9.9 65°F1016.1 hPa
VTBT2 26 mi49 min ENE 9.9 G 11 67°F 1015.6 hPa54°F
PACT2 - 8775792 - Packery Channel, TX 26 mi49 min NE 8.9 G 11 67°F 67°F1014.9 hPa
MQTT2 - 8775870 - Malaquite Beach (Corpus Christi), TX 29 mi49 min ENE 9.9 G 11 77°F
SDRT2 - 8773037 - Seadrift, TX 35 mi49 min ENE 6 G 8 67°F 67°F1015.8 hPa
IRDT2 38 mi49 min E 9.9 G 13 67°F 64°F1015.1 hPa
PCNT2 - 8773701 - Matagorda Bay; Port O'Connor, TX 48 mi49 min ESE 11 G 13 66°F 72°F1015.2 hPa
MBET2 49 mi49 min SE 9.9 G 12 66°F 1014.2 hPa

Wind History for Rockport, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rockport Aransas County Airport, TX7 mi74 minENE 79.00 miOvercast67°F53°F61%1015.9 hPa
Mc Campbell, TX9 mi72 minESE 710.00 miFair69°F52°F56%1015.6 hPa
Port Aransas, Mustang Beach Airport, TX12 mi72 minNE 1010.00 miOvercast68°F54°F61%1016.3 hPa
Corpus Christi, Corpus Christi Naval Air Station/Truax Field, TX24 mi71 minENE 910.00 miMostly Cloudy70°F54°F57%1015.6 hPa

Link to 5 minute data for KRKP

Wind History from RKP (wind in knots)
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Last 24hrN4CalmNE4N4N8N6NE6NE8NE5N4N5N6N6N5N6N7NE9E11E9E8E9E9E7E5
1 day agoN13N12N8N7N12
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N11N8N10N10N12N11N10N12N10N11N11N10N7
2 days agoSE7SE5E5E4N19
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N14N15N15

Tide / Current Tables for Rockport, Aransas Bay, Texas (2)
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Rockport
Click for Map
Mon -- 01:54 AM CDT     Moonset
Mon -- 06:40 AM CDT     0.02 feet Low Tide
Mon -- 06:58 AM CDT     Sunrise
Mon -- 12:22 PM CDT     Moonrise
Mon -- 07:55 PM CDT     Sunset
Mon -- 09:00 PM CDT     0.27 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.20.10.10.1000000.10.10.10.20.20.20.20.20.30.30.30.30.30.3

Tide / Current Tables for Aransas Pass, Texas Current
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Aransas Pass
Click for Map
Mon -- 12:47 AM CDT     -1.55 knots Max Ebb
Mon -- 01:54 AM CDT     Moonset
Mon -- 06:36 AM CDT     0.00 knots Slack
Mon -- 06:59 AM CDT     Sunrise
Mon -- 11:13 AM CDT     1.63 knots Max Flood
Mon -- 12:23 PM CDT     Moonrise
Mon -- 06:34 PM CDT     -0.00 knots Slack
Mon -- 07:55 PM CDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.5-1.5-1.4-1.2-0.9-0.6-0.20.20.61.11.51.61.61.51.41.210.60.2-0.1-0.4-0.6-0.8-1

Weather Map
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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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