Monday, January18, 2021
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Marine Weather and Tides
Marble Falls, TX

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:27AMSunset 5:56PM Monday January 18, 2021 8:14 PM CST (02:14 UTC) Moonrise 11:13AMMoonset 11:27PM Illumination 31% Phase: Waxing Crescent; Moon at 6 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 Marble Falls, TX
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location: 30.58, -98.27     debug


Area Discussion for - Austin/San Antonio, TX
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FXUS64 KEWX 182345 AFDEWX

Area Forecast Discussion National Weather Service Austin/San Antonio TX 545 PM CST Mon Jan 18 2021

AVIATION. VFR flying conditions will lower to MVFR at the I-35 sites late this evening and at KDRT early in the overnight with all sites lowering to IFR overnight to possibly LIFR early morning as SHRA develop and become more numerous. CIGs will rise to MVFR at the I-35 sites late morning. However, all sites will fall to IFR as a cold front moves across the area, first at KDRT mid morning and then at the I-35 sites mid to late afternoon. S to SE winds 5 to 12 KTs, will shift to NW at 10 to 15 KTs at KDRT mid morning, and N at 10 to 15 KTs at the I-35 sites in the afternoon. A few gusts to 25 KTs are possible in the wake of the frontal passage. Most recent models still show some disagreement on the timing of the frontal passage for the I-35 sites with a couple earlier (around midday) while a few are later (closer to early evening). Forecasts will be adjusted as trends become more apparent.

PREV DISCUSSION. /ISSUED 246 PM CST Mon Jan 18 2021/

SHORT TERM (Tonight through Tuesday Night) . A very moist airmass has been pouring into the region overnight and through the morning and as of 18Z today dew points range from as high as 60 at Kenedy to as low as the upper 30s still in Val Verde County. RAP analysis shows a sfc low over west TX with high pressure over the SE CONUS, and southerly flow has increased today to a general 5-15 mph with gusts to 20-25 mph, isolated to 30 mph north. These winds will decrease quickly with the loss of daytime heating this evening. Low stratus has been slow to erode over central portions of the region and have lowered forecast highs as a result for SAT, HDO, ERV, etc where mid to upper 60s will likely be the ceiling. Elsewhere, 70s are expected.

Tonight, low stratus will return and some areas of fog are also possible across the Hill Country extending potentially to the I-35 corridor by Tuesday morning. This fog may be locally dense once again. Isolated shower activity could begin to develop along and east of I-35 by as early as 9pm tonight as the LLJ picks up, perhaps patchy drizzle with a shallow saturated layer initially, but rain chances will gradually increase after midnight as isentropic lift continues to build over the region. Lows will be warm, in the upper 40s NW to near 60 SE.

Rain chances will expand south and westward during the daytime as overrunning flow continues over a cold front slowly pushing into the area after sunrise. There could also be some isolated thunder along the front as CAPE increases to 300-600 J/kg, but with h5a height rises and a decent capping inversion around 10 kft its unlikely to be more widespread. There remains some uncertainty in frontal timing, with high-resolution guidance suggesting a faster progression exiting to our south by 6-7pm Tuesday. Global guidance is slower, with the GFS now stalling the boundary across our Coastal Plains counties in the late afternoon and evening. Leaning the official forecast closer to the high-res solution. Regardless of timing, a period of moderate northeasterly winds is expected behind the front in the afternoon and evening at 10-20 mph with gusts up to 25-30 mph possible once again in some locations.

Tuesday night, especially after midnight, better chances for appreciable rainfall amounts will shift to the west over the Winter Garden and Rio Grande areas. These higher rain chances will also spread northward to the southern Edwards Plateau by the end of the short term period. In all through 12Z Wednesday, a widespread 0.25- 0.5" of rain is forecast with isolated higher totals. The best chance for amounts in excess of 0.75" will be right along the escarpment where orographic enhancement takes place prior to FROPA as well as out west where the heavier rainfall rates will migrate tomorrow night. Aside from the low visibility in fog tonight, no hazardous weather is expected. Generally just some much needed rainfall for those regions still in drought status.

LONG TERM (Wednesday through Monday) . With Tuesday's cold front still lingering around the area in combination with upper level support, chances for rain continue on Wednesday for much of the day. Scattered to numerous showers are expected to concentrate across the Rio Grande and then shift to the east-northeast to affect parts of the Hill Country and areas along the Interstate 35, including Austin and San Antonio metro areas on Wednesday afternoon and evening. The mid level short wave that will help those showers to pull to the Hill Country is forecast to push to the east and flatten through Thursday. With this scenario in place, expect periods of dry weather early Thursday through the afternoon hours with chances of showers concentrated across the Coastal Plains.

As Thursday evening progresses, another cold front is forecast to push across the area on Thursday night into Friday. Chances of showers and isolated thunderstorms are expected through the period with activity coming to an end from west to east mid morning to mid afternoon Friday. Some lingering showers and a thunderstorm or two are possible across the far east Friday afternoon.

Dry conditions will not last long as the cold front pushes back north into the area as a warm front and stays over the region over the weekend with moist gulf moisture prevailing. The work week starts with wet conditions with the arrival of a Pacific cold front over South Central Texas. Weather conditions should clear out by Monday afternoon.

Highs should be above climate normal in the upper 60s to lower 70s across the Hill Country to the mid to upper 70s elsewhere. The exception to this pattern will be Wednesday as max temperatures only reach the mid 50s across the Hill Country to lower and mid 60s along and east of I-35. Lows should range from the upper 40s to lower 60s.

Storm rainfall totals are expected to range from one tenth to one half inch across the Edwards Plateau and western Hill Country to one half to one inch across the escarpment, northern Hill Country, and areas along and east of Interstate 35. A few isolated spots could get higher amounts.

PRELIMINARY POINT TEMPS/POPS. Austin Camp Mabry 57 65 48 58 53 / 50 60 50 50 40 Austin Bergstrom Intl Airport 58 67 48 60 52 / 40 60 50 50 40 New Braunfels Muni Airport 59 69 50 62 55 / 40 50 50 60 40 Burnet Muni Airport 53 57 45 55 50 / 40 60 40 50 30 Del Rio Intl Airport 53 58 47 57 48 / 20 50 70 60 20 Georgetown Muni Airport 55 61 46 57 51 / 50 70 40 50 40 Hondo Muni Airport 58 68 50 61 52 / 30 50 60 70 30 San Marcos Muni Airport 58 69 48 60 53 / 40 60 50 50 40 La Grange - Fayette Regional 61 71 52 64 58 / 30 50 50 40 40 San Antonio Intl Airport 59 69 51 60 55 / 40 50 50 70 40 Stinson Muni Airport 60 70 51 61 55 / 30 50 50 70 40

EWX WATCHES/WARNINGS/ADVISORIES. None.

Short-Term/Aviation . 04 Long-Term . 05


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Horseshoe Bay Resort Airpark, TX6 mi33 minN 010.00 miFair54°F48°F82%1013.5 hPa
Burnet, Burnet Municipal Craddock Field, TX11 mi21 minN 010.00 miFair55°F48°F77%1013.7 hPa
Lago Vista TX, Rusty Allen Airport, TX17 mi19 minSE 610.00 miMostly Cloudy0°F0°F%1014.2 hPa

Link to 5 minute data for KDZB

Wind History from DZB (wind in knots)
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Last 24hrS4CalmS4S3CalmS4CalmCalmCalmCalmCalmCalmCalmS4S5
G15
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1 day agoS4S3SE4CalmCalmCalmCalmCalmS3S3S3CalmCalmNW3NW5N6N5N5N4N3NE3CalmCalmSE3
2 days agoW4SW4NW3CalmW3SW5SW5SW8SW4W4CalmS4CalmW4CalmNE4N3W3E4E4E3E3SE4SE3

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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