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Marine Weather and Tide Forecast for Sunset Valley, TX

February 19, 2025 6:34 AM CST (12:34 UTC) Change Location
Sunrise 7:05 AM   Sunset 6:23 PM
Moonrise 12:07 AM   Moonset 10:42 AM 
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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.

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7 Day Forecast for Marine Location Near Sunset Valley, TX
   
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Area Discussion for Austin/San Antonio, TX
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FXUS64 KEWX 191125 AFDEWX

Area Forecast Discussion National Weather Service Austin/San Antonio TX 525 AM CST Wed Feb 19 2025

New AVIATION

SHORT TERM
(Today through Thursday)
Issued at 226 AM CST Wed Feb 19 2025

Key Messages:

- Arctic cold air will continue to move in today through Thursday morning with dangerous wind chills and hard freezes expected.

- Extreme Cold Warning is in effect for the Edwards Plateau, Hill Country, and I-35 Corridor. Cold Weather Advisory is in effect for the Coastal Plains to the southern Rio Grande Plains. These are in effect today through Noon CST Thursday.

- Wind Advisory remains in effect for the Southeastern Hill Country and the I-35 Corridor through Noon CST today.

Arctic high pressure continues to build into our area in the short term. The tightest surface pressure gradient is expected this morning bringing the strongest northerly winds of 20 to 25 mph with gusts to 40 mph. We have continued the Wind Advisory through Noon CST today. The pressure gradient slowly relaxes this afternoon into tonight, then even further on Thursday. However, breezy conditions will continue into Thursday. Temperatures and wind chills have fallen faster than expected early this morning. High temperatures will also be a little colder than previously forecast due to clouds persisting a bit longer today. Some spots in the Edwards Plateau and Hill Country may remain below freezing. As a result, the dangerously cold wind chills continue through the short term. We ran the ongoing Extreme Cold Warning for the Edwards Plateau and Hill Country through Noon CST Thursday. The Cold Weather Advisory previously issued for the US 90 corridor to the I-35 corridor through Noon CST today was replaced by the Extreme Cold Warning through Noon CST Thursday. In addition, ran the Cold Weather Advisory for the Coastal Plains to the southern Rio Grande Plains through Noon CST Thursday.
Dangerous wind chills will fall below Zero across portions of the Edwards Plateau, and Hill Country, below 10 degrees along the US 90 corridor to the I-35 corridor, and below 15 degrees across the remainder of our area. The coldest wind chills be this morning and again tonight into Thursday morning.

LONG TERM
(Thursday night through Tuesday)
Issued at 226 AM CST Wed Feb 19 2025

Key Messages:

- Showers possible Friday night through Saturday night for the I-35 corridor and Coastal Plains.

- Low chances for a wintry mix along the northern I-35 corridor and Hill Country sometime Friday night into Saturday morning.

- Much warmer temperatures return Sunday through the beginning of next week.

Clouds will be spreading across South Central Texas Thursday night into Friday morning as southerly flow at 850mb becomes reestablished. This will lessen the amount of radiational cooling even with lighter winds near the surface, but enough of the Arctic airmass should still be in place for lows Friday morning to reach below freezing for nearly our entire forecast region, with hard freezes (below 28F) along the I-35 corridor north of Bexar County, the Hill Country, and Edwards Plateau.

Thickening cloud cover will keep Friday's highs in check, remaining in the 30s to low-40s across South Central Texas. As the day continues, dew points are expected to gradually rise and low-level profiles will gradually saturate with moisture siphoned off from a developing coastal low off the Texas coast. Models are in good agreement that the combination of moistening below about 800mb and lift from an approaching shortwave trough will allow for the development of showers with an initial spread north along the I-35 corridor. The NAM seems to be an outlier in the strength of the low- level jet, and thus saturates and precipitates as early as Friday morning. Most of the ensemble guidance shows precipitation onset late Friday/Saturday morning. The key question will be how the timing of precipitation lines up with near-surface temperatures.
While the southerly flow aloft will result in a prominent warm nose centered near 850mb, a residual subfreezing near-surface layer could feasibly result in profiles more conducive to producing a wintry mix of sleet and freezing rain over the Hill Country and northern I-35 corridor. Overall chances remain low due to how sensitive the setup is to small changes in temperatures, but the overall picture will start to become clearer over the next two days as these near-surface details enter the range of higher resolution models.

As the coastal disturbance tracks east Saturday, so too will its associated showers. PoPs Saturday afternoon for the I-35 corridor and Coastal Plains, likely all liquid by then, remain 20 to 40 percent. With a drying northwesterly flow aloft, clouds may start to break farther west and allow highs to approach the 60s, but rain and cloud cover along and east of I-35 are forecast to keep highs cool and in the 40s. Saturday night/Sunday morning looks to remain cool with patchy freezes possible, but a warming southerly flow may become established by Sunday afternoon, pairing with clearing skies to bring daytime highs into the 60s and 70s. The warming trend looks to continue through at least Tuesday without any significant shakeups to the upper-air pattern. Highs in the 80s may start to enter the picture Monday afternoon along the Rio Grande, with the warmth spreading eastward Tuesday.

AVIATION
(12Z TAFS)
Issued at 525 AM CST Wed Feb 19 2025

MVFR CIGs gradually erode this morning into early afternoon leading to FEW-SCT VFR clouds thereafter through Thursday. Northerly winds 15 to 25 KTs with a few gusts to 35 KTs possible decreases to a steadier 7 to 15 KTs tonight through Thursday.

PRELIMINARY POINT TEMPS/POPS
Austin Camp Mabry 36 19 40 27 / 0 0 0 0 Austin Bergstrom Intl Airport 38 19 40 26 / 0 0 0 0 New Braunfels Muni Airport 40 20 43 28 / 0 0 0 0 Burnet Muni Airport 33 16 38 24 / 0 0 0 0 Del Rio Intl Airport 47 23 50 31 / 0 0 0 0 Georgetown Muni Airport 35 16 38 23 / 0 0 0 0 Hondo Muni Airport 44 20 45 29 / 0 0 0 0 San Marcos Muni Airport 39 19 40 26 / 0 0 0 0 La Grange - Fayette Regional 39 19 41 27 / 0 0 0 0 San Antonio Intl Airport 41 21 43 30 / 0 0 0 0 Stinson Muni Airport 44 22 44 31 / 0 0 0 0

EWX WATCHES/WARNINGS/ADVISORIES
Extreme Cold Warning until noon CST Thursday for Bandera-Bastrop- Bexar-Blanco-Burnet-Caldwell-Comal-Edwards-Gillespie-Guadalupe-Hays- Kendall-Kerr-Kinney-Lee-Llano-Medina-Real-Travis-Uvalde-Val Verde- Williamson.

Cold Weather Advisory until noon CST Thursday for Atascosa-De Witt- Dimmit-Fayette-Frio-Gonzales-Karnes-Lavaca-Maverick-Wilson-Zavala.


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