Wednesday, March3, 2021
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Marine Weather and Tides
Seguin, 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 6:53AMSunset 6:33PM Wednesday March 3, 2021 6:05 PM CST (00:05 UTC) Moonrise 11:32PMMoonset 9:56AM Illumination 72% Phase: Waning Gibbous; Moon at 20 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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7 Day Forecast for Marine Location Near Seguin, TX
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location: 29.51, -98     debug


Area Discussion for - Austin/San Antonio, TX
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FXUS64 KEWX 032316 AFDEWX

Area Forecast Discussion National Weather Service Austin/San Antonio TX 516 PM CST Wed Mar 3 2021

AVIATION. VFR this afternoon and tonight with light southerly winds. Increasing moisture and falling temperatures overnight will bring decreasing visibility and ceilings to the area. For now, TAFs will carry IFR at San Antonio sites with a lesser chance for AUS and DRT. Conditions improves later in the morning.

PREV DISCUSSION. /ISSUED 147 PM CST Wed Mar 3 2021/

SHORT TERM (Tonight through Thursday Night) .

While southerly winds have increased to 10 to 15 knots over our two counties of the southern Edwards Plateau, the majority of South Central TX counties will enjoy a light to moderate breeze with mostly fair skies and seasonally mild temperatures through this evening. Low cloud coverage, and mainly at mid/high levels, should allow for a fairly quick fall of temps, so late night temps should become chilly and then slowly cool after midnight as the dew points climb in the southerly surface winds. A coastal dew point gradient from Port Aransas to Brownsville should send low 50s dew points toward our Rio Grande Plains counties overnight, so there is a high chance that we'll see areas of saturation develop close to daybreak as temps and dew points converge. The areas where fog is mentioned is somewhat conservative due to high cloudiness likely to affect the temperatures to maintaining a slight separation from the dew point. The mention of fog may need to be expanded later, and also the mention of pockets of dense fog as a rolling gradient of advection fog could be possible over the southern counties toward daybreak. Time sections indicate also the potential for some increasing boundary layer winds overnight, and this could become a more dominant saturation layer than at the surface in some areas. The settling of drier dewpoints from early this morning means that the warming trend for Thursday's lows will be higher than previously advertised; some areas could see 8 to 12 degree warmer MIN's than from this morning.

With Thursday morning lows getting a head-start of mostly in the low 40s to near 50, the afternoon warming trend should be mainly up by about 2-4 degrees for most areas Thursday versus those for this afternoon, this despite most areas seeing skies trend to mostly cloudy. Thursday afternoon should see most areas trend to partly cloudy to mostly clear, but by late evening cloudiness should more readily form as south winds increase in response to the next Southern Plains storm system. This mostly symmetric upper low shows a much more rapid weakening as it enters OK Friday, so there are weakening trends in the Thursday night winds. This may delay the wind-shift of the Pacific front to follow, so we are showing relatively light winds over our Edwards Plateau counties in the predawn hours. Thus widespread stratus is expected, but later forecast assessments may need to introduce a potential for some fog early Friday morning as well.

LONG TERM (Friday through Wednesday) .

On Friday, a sfc low will deepen over North-Central Texas, resulting in a tightening pressure gradient across South-Central Texas Friday afternoon. This will help to push a surface cold front southeastward through the CWA on Friday morning-early afternoon. Winds will be quite gusty, perhaps nearing advisory level criteria, at 15-25 mph, gusting to 35-40 mph at times. With relative humidity values falling into the 20-30 percent range, elevated to near-critical fire weather conditions will develop, especially across the Hill Country and Rio Grande Plains. Temperatures should still manage to warm into the mid to upper 70s, with some spots touching the 80 degree mark on Friday afternoon. Winds should start to relax after sunset on Friday, but some breezy conditions will linger through midnight Friday into early Saturday morning, mainly across the Coastal Plains.

The weekend looks cooler, as surface high pressure settles in for Saturday. Temperatures will be some 10-15 degrees cooler, but seasonable for early March. Sunday will be slightly warmer as winds veer around out of the S/SE as high pressure scoots eastward. Aloft, a bit of a zonal/northwesterly flow pattern will continue, resulting in yet another shortwave trough entering the region on Sunday into Monday. We may manage to squeeze some moisture out of this system on Sunday in the form of light rain, but it will be quite progressive, with not much low level moisture return in time to team up with the upper level lifting mechanisms. With that being said, have opted to keep PoPs less than 20% still for Sunday into Monday.

Our next shot at rain will arrive with another upper level trough approaching Tuesday/Wednesday, but deterministic models continue to struggle with the timing and details, so confidence is quite low. At this time, have decided to introduce 20% PoPs for our eastern zones on Wednesday, but fine-tuning will be needed once better agreement is noted among global models in the coming days.

PRELIMINARY POINT TEMPS/POPS. Austin Camp Mabry 44 73 53 76 51 / 0 0 - 0 - Austin Bergstrom Intl Airport 42 74 51 77 50 / 0 0 - 0 - New Braunfels Muni Airport 44 75 54 79 51 / 0 0 - 0 0 Burnet Muni Airport 45 72 51 72 47 / 0 0 - 0 0 Del Rio Intl Airport 50 77 53 78 49 / 0 0 - 0 0 Georgetown Muni Airport 43 72 51 75 49 / 0 0 - 0 - Hondo Muni Airport 46 75 52 79 48 / 0 0 - 0 0 San Marcos Muni Airport 42 73 51 77 49 / 0 0 - 0 0 La Grange - Fayette Regional 42 73 52 77 51 / 0 0 - - 0 San Antonio Intl Airport 47 73 54 78 51 / 0 0 - 0 0 Stinson Muni Airport 46 74 54 78 50 / 0 0 - 0 0

EWX WATCHES/WARNINGS/ADVISORIES. None.

Short-Term/Aviation . YBVP Long-Term . Runyen


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
New Braunfels Regional Airport, TX14 mi75 minSSW 910.00 miFair71°F38°F30%1018.6 hPa
Randolph Air Force Base, TX15 mi70 minSSE 610.00 miFair70°F40°F33%1018.5 hPa

Link to 5 minute data for KBAZ

Wind History from BAZ (wind in knots)
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Last 24hrE6E4E3E3NE3CalmNW5NW5NW5NW4NW4NW5W4NW4W35S535S5S7S7SW9S8
1 day agoN17
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Tide / Current Tables for Port Lavaca, Matagorda Bay, Texas
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Port Lavaca
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Wed -- 04:51 AM CST     -0.05 feet Low Tide
Wed -- 06:48 AM CST     Sunrise
Wed -- 09:50 AM CST     Moonset
Wed -- 02:41 PM CST     0.60 feet High Tide
Wed -- 06:27 PM CST     Sunset
Wed -- 11:24 PM CST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.20.10-0-0.1-000.10.30.40.50.50.60.60.60.60.60.60.60.60.60.50.4

Tide / Current Tables for
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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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